fix: broken links to completions docs in CLI reference

---------

Co-authored-by: Pasha Sviderski <me@psviderski.name>
Co-authored-by: Anton Ovchinnikov <anton@tonyo.info>

.github/copilot-instructions.md

@@ -0,0 +1 @@
+../AI.md

.github/workflows/go-tests.yml

@@ -37,7 +37,9 @@ jobs:
             (echo "go.mod or go.sum has changed. Please run 'go mod tidy' and commit the changes." && exit 1)
 
       - name: Run tests
-        run: make test
+        run: |
+          make ucind-image
+          make test
     timeout-minutes: 10
 
   check-protobuf:

.github/workflows/lint.yml

@@ -0,0 +1,39 @@
+name: Lint
+on:
+  push:
+    branches:
+      - "main"
+      - "test/**"
+      - "release/**"
+  pull_request:
+    branches:
+      - main
+    paths:
+      - "**.go"
+      - "go.*"
+permissions:
+  contents: read
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Set up Go
+        uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+        with:
+          go-version: "1.23.2"
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@4afd733a84b1f43292c63897423277bb7f4313a9 # v8.0.0
+        with:
+          version: v2.2.2
+
+      - name: Format code
+        run: |
+          make format
+          git diff --exit-code ||
+            (echo "Code is not formatted. Please run 'make format' and commit the changes." && exit 1)
+
+    timeout-minutes: 10

.golangci.yaml

@@ -0,0 +1,42 @@
+version: "2"
+
+run:
+  concurrency: 4
+  tests: true
+  timeout: 5m
+
+linters:
+  default: none
+  enable:
+    - bodyclose
+    # - dogsled
+    - dupl
+    # - errcheck
+    - gochecknoinits
+    - goconst
+    # - gocritic
+    # - gocyclo
+    # - godot
+    # - gosec
+    # - govet
+    - ineffassign
+    - misspell
+    - nakedret
+    # - prealloc
+    # - revive
+    # - staticcheck
+    - unconvert
+    # - unparam
+    # - unused
+    - whitespace
+  exclusions:
+    rules:
+      - path: ^test/e2e
+        linters:
+          - goconst  # constants here add no value, so we skip goconst only for test/e2e.
+
+formatters:
+  enable:
+    - gofumpt
+    - goimports
+

.mise.lock

@@ -1,3 +1,11 @@
+[tools."aqua:vektra/mockery"]
+version = "3.5.3"
+backend = "aqua:vektra/mockery"
+
+[tools."aqua:vektra/mockery".checksums]
+"mockery_3.5.3_Darwin_arm64.tar.gz" = "sha256:a3a94b14c7414e148f2252199ffc4a0108d311358f3d336cbe05bb73cb203704"
+"mockery_3.5.3_Linux_x86_64.tar.gz" = "sha256:ebce416b0175338525246c376885a1579ca6cd4d4015140ba0c70e6b5339a39c"
+
 [tools.go]
 version = "1.23.10"
 backend = "core:go"
@@ -6,6 +14,14 @@ backend = "core:go"
 "go1.23.10.darwin-arm64.tar.gz" = "sha256:25c64bfa8a8fd8e7f62fb54afa4354af8409a4bb2358c2699a1003b733e6fce5"
 "go1.23.10.linux-amd64.tar.gz" = "sha256:535f9f81802499f2a7dbfa70abb8fda3793725fcc29460f719815f6e10b5fd60"
 
+[tools.golangci-lint]
+version = "2.2.2"
+backend = "aqua:golangci/golangci-lint"
+
+[tools.golangci-lint.checksums]
+"golangci-lint-2.2.2-darwin-arm64.tar.gz" = "sha256:d84d94d042c0d495fd1746f3d18948a75de163b17a14e8de3ef840928dd2df74"
+"golangci-lint-2.2.2-linux-amd64.tar.gz" = "sha256:c27fbde948a87d326feacd21df2f61a9c54dbd2e3bfa185c0a1cd6917a6f964f"
+
 [tools.protoc]
 version = "27.3"
 backend = "aqua:protocolbuffers/protobuf/protoc"

.mise.toml

@@ -2,7 +2,9 @@
 experimental = true
 
 [tools]
+"aqua:vektra/mockery" = "3.5.3"
 go = "1.23"
+golangci-lint = "2.2.2"
 protoc = "27.3"
 protoc-gen-go = "1.34.2"
 protoc-gen-go-grpc = "1.5.1"

.mockery.yml

@@ -0,0 +1,4 @@
+packages:
+  github.com/psviderski/uncloud/internal/machine/caddyconfig:
+    interfaces:
+      CaddyfileValidator:

AI.md

@@ -0,0 +1,244 @@
+# AI.md - Uncloud Project Guide
+
+This document provides comprehensive information about the Uncloud project for AI assistants to understand the codebase, architecture, and development practices.
+
+## Project Overview
+
+**Uncloud** is a lightweight clustering and container orchestration tool that enables deployment and management of web applications across cloud VMs and bare metal servers. It creates a secure WireGuard mesh network between Docker hosts and provides automatic service discovery, load balancing, HTTPS ingress, and simple CLI commands for application management.
+
+### Key Characteristics
+
+- **Language**: Go
+- **Architecture**: Decentralized, no control plane
+- **Target**: Self-hosted infrastructure without Kubernetes complexity
+- **License**: View LICENSE file for details
+- **Status**: Active development, not yet ready for production
+
+## Core Features
+
+### 🏗️ Infrastructure
+
+- **Multi-machine deployment**: Combine cloud VMs, dedicated servers, and bare metal
+- **Zero-config networking**: Automatic WireGuard mesh with NAT traversal
+- **Decentralized design**: No central control plane, all machines are equal
+- **Service discovery**: Built-in DNS server resolves service names to container IPs
+
+### 🚀 Application Management
+
+- **Docker Compose compatibility**: Uses familiar Docker Compose format
+- **Zero-downtime deployments**: Rolling updates without service interruption
+- **Automatic HTTPS**: Caddy reverse proxy with Let's Encrypt integration
+- **Managed DNS**: Free `*.cluster.uncloud.run` subdomains via Uncloud DNS service
+- **Cross-machine scaling**: Run containers across multiple machines
+
+### 🔧 Developer Experience
+
+- **Docker-like CLI**: Familiar commands (`uc` binary)
+- **Imperative operations**: Direct commands vs. declarative state reconciliation
+- **Remote management**: Control entire infrastructure via SSH to any machine
+- **Minimal overhead**: ~150MB RAM footprint per machine
+
+## Architecture
+
+### Core Components
+
+1. **CLI (`uc`)** - Main user interface for cluster management
+2. **Daemon (`uncloudd`)** - Machine daemon running on each node
+3. **Corrosion** - Distributed SQLite database for cluster state (Fly.io project)
+4. **Caddy** - Reverse proxy for HTTPS termination and routing
+5. **WireGuard** - Secure mesh networking between machines
+
+### Network Architecture
+
+- Each machine gets unique subnet (e.g., `10.210.0.0/24`, `10.210.1.0/24`)
+- Containers get cluster-unique IPs for direct communication
+- Automatic peer discovery and key management
+- NAT traversal for machines behind firewalls
+
+### State Management
+
+- **CRDT-based distributed storage** using Corrosion
+- **Eventually consistent** state across all machines
+- **Gossip protocol** (Serf) for state propagation
+- **No quorum requirements** - partial network splits remain functional
+
+## Project Structure
+
+### Key Directories
+
+- **`cmd/`**: Contains main applications
+
+  - `uncloud/`: CLI tool with subcommands for machine, service, volume management
+  - `uncloudd/`: Daemon that runs on each machine
+  - `ucind/`: Development cluster management for testing
+
+- **`internal/`**: Internal implementation packages
+
+  - `cli/`: Command-line interface logic
+  - `machine/`: Machine lifecycle and state management
+  - `daemon/`: Daemon implementation and gRPC services
+  - `dns/`: Internal DNS server for service discovery
+
+- **`pkg/`**: Public API packages for external use
+
+  - `api/`: Core API types and definitions
+  - `client/`: Client libraries for interacting with Uncloud
+
+- **`experiment/`**: Experimental features and prototypes
+- **`scripts/`**: Installation and utility scripts
+- **`test/`**: Test suites and test infrastructure
+- **`website/`**: Documentation website (Docusaurus)
+- **`misc/`**: Design documents and guides
+
+## Key Technologies
+
+### Core Dependencies
+
+```go
+// Networking and orchestration
+github.com/docker/docker                   // Docker API client
+github.com/docker/compose/v2               // Docker Compose integration
+golang.zx2c4.com/wireguard                 // WireGuard implementation
+github.com/hashicorp/serf                  // Gossip protocol
+
+// State management
+github.com/ipfs/go-ds-crdt                 // CRDT distributed storage
+github.com/dgraph-io/badger/v3             // Embedded database
+
+// Web proxy
+github.com/caddyserver/caddy/v2            // HTTP server and reverse proxy
+
+// CLI and UX
+github.com/spf13/cobra                     // CLI framework
+github.com/charmbracelet/huh               // Interactive forms
+
+// gRPC and networking
+google.golang.org/grpc                     // gRPC framework
+github.com/siderolabs/grpc-proxy           // gRPC proxy for forwarding
+```
+
+## Development Workflow
+
+### Build and Development
+
+```bash
+# Build binaries
+go build -o uncloud ./cmd/uncloud
+go build -o uncloudd ./cmd/uncloudd
+```
+
+### Key Make Targets
+
+- `proto`: Generate protobuf code
+- `ucind-cluster`: Create development cluster
+- `update-dev`: Deploy to development machines
+- `demo-reset`: Reset demo environment
+- `fmt`: Format code
+- `test`: Run all tests
+- `lint`: Lint the code using golangci-lint
+- `lint-and-fix`: Lint the code and fix issues whenever possible
+
+## CLI Commands Structure
+
+The `uc` CLI provides these main command groups:
+
+### Machine Management
+
+```bash
+uc machine init <user@host>     # Initialize new cluster
+uc machine add <user@host>      # Add machine to cluster
+uc machine ls                   # List machines
+uc machine rm <name>            # Remove machine
+```
+
+### Service Management
+
+```bash
+uc run <image>                  # Run container from image
+uc deploy                       # Deploy from compose.yaml
+uc scale <service> <count>      # Scale service replicas
+uc ls                           # List services
+uc rm <service>                 # Remove service
+```
+
+### Context and Connectivity
+
+```bash
+uc context ls                   # List available contexts
+uc context use <name>           # Switch context
+```
+
+### Global Flags
+
+- `--connect`: Connect to remote machine directly, without a config file
+- `--uncloud-config`: Override config file path
+
+## Development Guidelines
+
+### Code Organization
+
+- **Package naming**: Use clear, descriptive names
+- **Error handling**: Wrap errors with context using `fmt.Errorf`
+- **Logging**: Use structured logging with levels
+- **gRPC**: Services defined in `internal/machine/api/pb/`
+
+### Testing
+
+- Unit tests alongside source files (`*_test.go`)
+- Integration tests in `test/e2e/`
+- Test fixtures in `test/fixtures/`
+
+### Dependencies
+
+- Prefer standard library when possible
+- Pin versions in `go.mod`
+- Document rationale for external dependencies
+
+### Configuration
+
+- Support environment variables for key settings
+- Validate configuration early
+- Provide sensible defaults
+
+## Troubleshooting and Debugging
+
+### Common Issues
+
+- **Networking**: Check WireGuard status, iptables rules
+- **DNS**: Verify service discovery resolution
+- **Containers**: Use standard Docker debugging tools
+- **State sync**: Check Corrosion logs for replication issues
+
+### Debugging Tools
+
+- Standard Linux networking tools (`ping`, `traceroute`, `wireshark`)
+- Docker commands (`docker ps`, `docker logs`)
+- SSH access to machines for direct inspection
+- gRPC debugging tools
+
+### Logs and Monitoring
+
+- Systemd services (getting logs via `journalctl -u SERVICE_NAME`)
+  - `uncloud` -- Uncloud daemon
+  - `uncloud-corrosion` -- Corrosion process
+- Machine daemon logs
+- Container logs via Docker
+
+## File Patterns and Conventions
+
+### Important Files to Understand
+
+- `cmd/uncloud/main.go`: CLI entry point and command structure
+- `internal/cli/cli.go`: CLI implementation and configuration
+- `internal/machine/machine.go`: Core machine management
+- `pkg/api/`: Public API definitions
+- `misc/design.md`: Architecture and design philosophy
+- `README.md`: User-facing documentation
+
+### Configuration Files
+
+- `go.mod/go.sum`: Go dependency management
+- `Makefile`: Build and development tasks
+- `Dockerfile`: Container build instructions forUncloud-in-Docker (used for testing)
+
+This document should help AI assistants understand the project structure, make informed suggestions, and contribute effectively to the Uncloud codebase.

CLAUDE.md

@@ -0,0 +1 @@
+./AI.md

Makefile

@@ -1,6 +1,5 @@
 CORROSION_IMAGE ?= ghcr.io/psviderski/corrosion:latest
 UCIND_IMAGE ?= ghcr.io/psviderski/ucind:latest
-DOCS_IMAGE ?= ghcr.io/psviderski/uncloud-docs:latest
 
 update-dev:
 	GOOS=linux GOARCH=amd64 go build -o uncloudd-linux-amd64 ./cmd/uncloudd && \
@@ -46,6 +45,11 @@ proto:
 	protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative \
 		--proto_path=. --proto_path=internal/machine/api/vendor internal/machine/api/pb/*.proto
 
+.PHONY: proto-mise
+proto-mise:
+	mise exec -- protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative \
+		--proto_path=. --proto_path=internal/machine/api/vendor internal/machine/api/pb/*.proto
+
 .PHONY: corrosion-image
 corrosion-image:
 	docker build -t "$(CORROSION_IMAGE)" --target corrosion .
@@ -62,14 +66,22 @@ ucind-image:
 ucind-multiarch-image-push:
 	docker buildx build --push --platform linux/amd64,linux/arm64 -t "$(UCIND_IMAGE)" --target ucind .
 
+.PHONY: mocks
+mocks:
+	@mockery
+
 .PHONY: test
 test:
 ifeq ($(TEST_NAME),)
 	go test -count=1 -v ./...
 else
-	go test -count=1 -v -run ^$(TEST_NAME)$$ ./...
+	go test -race -count=1 -v -run ^$(TEST_NAME)$$ ./...
 endif
 
+.PHONY: test-e2e
+test-e2e:
+	go test -race -count=1 -v ./test/e2e
+
 .PHONY: test-clean
 test-clean:
 	@CONTAINERS=$$(docker ps --filter "name=ucind-test" -q); \
@@ -89,6 +101,20 @@ test-clean:
 vet:
 	go vet ./...
 
-.PHONY: docs-image-push
+.PHONY: format fmt
-docs-image:
+format fmt:
-	docker buildx build --push --platform linux/amd64,linux/arm64 -t "$(DOCS_IMAGE)" ./docs
+	GOOS=linux golangci-lint fmt
+
+LINT_TARGETS := lint lint-and-fix
+.PHONY: $(LINT_TARGETS) _lint
+$(LINT_TARGETS): _lint
+lint: ARGS=
+lint-and-fix: ARGS=--fix
+_lint:
+# Explicitly set OS to Linux to not skip *_linux.go files when running on macOS.
+# Uncloud daemon won't likely support OS other than Linux anytime soon, so for now we can rely on that.
+	GOOS=linux golangci-lint run $(ARGS)
+
+.PHONY: cli-docs
+cli-docs:
+	go run ./cmd/uncloud docs

README.md

@@ -1,10 +1,10 @@
 <div align="center">
-  <img src="./website/images/logo.svg" height="100" width="100" alt="Uncloud logo"/>
+  <img src="./website/landing/images/logo.svg" height="100" width="100" alt="Uncloud logo"/>
   <h1>Uncloud</h1>
   <p><strong>Docker simplicity. Multi-machine power.</strong></p>
 
   <p>
-    <a href="https://docs.uncloud.run"><img src="https://img.shields.io/badge/Docs-blue.svg?style=for-the-badge&logo=gitbook&logoColor=white" alt="Documentation"></a>
+    <a href="https://uncloud.run/docs"><img src="https://img.shields.io/badge/Docs-blue.svg?style=for-the-badge&logo=gitbook&logoColor=white" alt="Documentation"></a>
     <a href="https://discord.gg/eR35KQJhPu"><img src="https://img.shields.io/badge/discord-5865F2.svg?style=for-the-badge&logo=discord&logoColor=white" alt="Join Discord"></a>
     <a href="https://x.com/psviderski"><img src="https://img.shields.io/badge/follow-black?style=for-the-badge&logo=X&logoColor=while" alt="Follow on X"></a>
     <a href="https://github.com/sponsors/psviderski"><img src="https://img.shields.io/badge/Donate-EA4AAA.svg?style=for-the-badge&logo=githubsponsors&logoColor=white" alt="Donate"></a>
@@ -52,11 +52,11 @@ complexity of Kubernetes.
 
 ## 🎬 Quick demo
 
-The screenshot below demonstrates how I use Uncloud to deploy the [Uncloud Documentation](https://docs.uncloud.run)
+The screenshot below demonstrates how I use Uncloud to deploy https://uncloud.run website to 2 remote machines from
-website to 2 remote machines (why not?) from the [`compose.yaml`](docs/compose.yaml) file on my local machine.
+the [`compose.yaml`](website/compose.yaml) file on my local machine.
 
-It exposes the container port `8000/tcp` as HTTPS on the domain `docs.uncloud.run`, served by the Caddy reverse proxy on
+It exposes the container port `8000/tcp` as HTTPS on the domain `uncloud.run`, served by the Caddy reverse proxy on the
-the remote machines. All managed by Uncloud.
+remote machines. All managed by Uncloud.
 
 ![Uncloud compose deployment demo](.github/images/compose-deploy.jpg)
 
@@ -96,8 +96,8 @@ platform, whether you're running on a $5 VPS, a spare Mac mini, or a rack of bar
    # or using curl (macOS/Linux)
    curl -fsS https://get.uncloud.run/install.sh | sh
    ```
-   
+
-   See [Installation](https://docs.uncloud.run/getting-started/install-cli) for more options.
+   See [Installation](https://uncloud.run/docs/getting-started/install-cli) for more options.
 
 2. Initialise your first machine:
 
@@ -130,15 +130,15 @@ platform, whether you're running on a $5 VPS, a spare Mac mini, or a rack of bar
    uncloud-uninstall
    ```
 
-View the [Documentation](https://docs.uncloud.run) for more information.
+View the [Documentation](https://uncloud.run/docs) for more information.
 
 ## ⚙️ How it works
 
-Check out the [design document](docs/design.md) to understand Uncloud's design philosophy and goals.
+Check out the [design document](misc/design.md) to understand Uncloud's design philosophy and goals.
 
 Here is a diagram of an Uncloud multi-provider cluster of 3 machines:
 
-![Diagram: multi-provider cluster of 3 machines](website/images/diagram.webp)
+![Diagram: multi-provider cluster of 3 machines](website/landing/images/diagram.webp)
 
 <details>
 <summary>Peek under the hood to see what happens when you run certain commands.</summary>
@@ -323,6 +323,15 @@ SQLite database used to share Uncloud's cluster state.
   features, and be the first to know when it's ready for production use.
 * Watch this repository for releases.
 
+## 💖 Sponsors
+
+These companies and projects are helping Uncloud with their generous sponsorship and/or services:
+
+<!-- Sentry -->
+<a href="https://sentry.io/welcome/">
+  <img height="100" alt="Sentry" src="https://github.com/user-attachments/assets/6c1439c0-d20d-40dc-a669-c9aa94651dfa" />
+</a>
+
 ## ❤️ Contributors
 
 Thank you [@cedws](https://github.com/cedws) for being the first contributor to Uncloud! 🎉

cmd/ucind/cluster/create.go

@@ -2,8 +2,9 @@ package cluster
 
 import (
 	"fmt"
-	"github.com/spf13/cobra"
+
 	"github.com/psviderski/uncloud/internal/ucind"
+	"github.com/spf13/cobra"
 )
 
 func NewCreateCommand() *cobra.Command {

cmd/ucind/cluster/remove.go

@@ -2,8 +2,9 @@ package cluster
 
 import (
 	"fmt"
-	"github.com/spf13/cobra"
+
 	"github.com/psviderski/uncloud/internal/ucind"
+	"github.com/spf13/cobra"
 )
 
 func NewRemoveCommand() *cobra.Command {

cmd/ucind/cluster/root.go

@@ -13,7 +13,7 @@ func NewRootCommand() *cobra.Command {
 	}
 	cmd.AddCommand(
 		NewCreateCommand(),
-		//NewListCommand(),
+		// NewListCommand(),
 		NewRemoveCommand(),
 	)
 	return cmd

cmd/uncloud/caddy/config.go

@@ -0,0 +1,76 @@
+package caddy
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/alecthomas/chroma/v2/quick"
+	"github.com/psviderski/uncloud/internal/cli"
+	"github.com/psviderski/uncloud/pkg/api"
+	"github.com/spf13/cobra"
+)
+
+type configOptions struct {
+	machine string
+	noColor bool
+	context string
+}
+
+func NewConfigCommand() *cobra.Command {
+	opts := configOptions{}
+
+	cmd := &cobra.Command{
+		Use:   "config",
+		Short: "Show the current Caddy configuration (Caddyfile).",
+		Long:  "Display the current Caddy configuration (Caddyfile) from the connected machine or a specified one.",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			uncli := cmd.Context().Value("cli").(*cli.CLI)
+			return runConfig(cmd.Context(), uncli, opts)
+		},
+	}
+
+	cmd.Flags().StringVarP(&opts.machine, "machine", "m", "",
+		"Name or ID of the machine to get the configuration from. (default is connected machine)")
+	cmd.Flags().BoolVar(&opts.noColor, "no-color", false,
+		"Disable syntax highlighting for the output.")
+	cmd.Flags().StringVarP(
+		&opts.context, "context", "c", "",
+		"Name of the cluster context. (default is the current context)",
+	)
+
+	return cmd
+}
+
+func runConfig(ctx context.Context, uncli *cli.CLI, opts configOptions) error {
+	clusterClient, err := uncli.ConnectCluster(ctx, opts.context)
+	if err != nil {
+		return fmt.Errorf("connect to cluster: %w", err)
+	}
+	defer clusterClient.Close()
+
+	if opts.machine != "" {
+		// If a specific machine is requested, use it to get the Caddy configuration.
+		ctx, _, err = api.ProxyMachinesContext(ctx, clusterClient, []string{opts.machine})
+		if err != nil {
+			return err
+		}
+	}
+
+	config, err := clusterClient.Caddy.GetConfig(ctx, nil)
+	if err != nil {
+		return fmt.Errorf("get Caddy config: %w", err)
+	}
+
+	// Print the Caddyfile with syntax highlighting.
+	if opts.noColor {
+		fmt.Print(config.Caddyfile)
+	} else {
+		if err = quick.Highlight(os.Stdout, config.Caddyfile, "caddy", "terminal256", "monokai"); err != nil {
+			// If highlighting fails, fall back to plain output.
+			fmt.Print(config.Caddyfile)
+		}
+	}
+
+	return nil
+}

cmd/uncloud/caddy/deploy.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"maps"
+	"os"
 	"slices"
 	"strings"
 
@@ -18,9 +19,10 @@ import (
 )
 
 type deployOptions struct {
-	image    string
+	caddyfile string
-	machines []string
+	image     string
-	context  string
+	machines  []string
+	context   string
 }
 
 func NewDeployCommand() *cobra.Command {
@@ -37,6 +39,8 @@ func NewDeployCommand() *cobra.Command {
 		},
 	}
 
+	cmd.Flags().StringVar(&opts.caddyfile, "caddyfile", "",
+		"Path to a custom global Caddy config (Caddyfile) that will be prepended to the auto-generated Caddy config.")
 	cmd.Flags().StringVar(&opts.image, "image", "",
 		"Caddy Docker image to deploy. (default caddy:LATEST_VERSION)")
 	cmd.Flags().StringSliceVarP(&opts.machines, "machine", "m", nil,
@@ -51,6 +55,15 @@ func NewDeployCommand() *cobra.Command {
 }
 
 func runDeploy(ctx context.Context, uncli *cli.CLI, opts deployOptions) error {
+	caddyfile := ""
+	if opts.caddyfile != "" {
+		data, err := os.ReadFile(opts.caddyfile)
+		if err != nil {
+			return fmt.Errorf("read Caddyfile: %w", err)
+		}
+		caddyfile = strings.TrimSpace(string(data))
+	}
+
 	clusterClient, err := uncli.ConnectCluster(ctx, opts.context)
 	if err != nil {
 		return fmt.Errorf("connect to cluster: %w", err)
@@ -91,7 +104,7 @@ func runDeploy(ctx context.Context, uncli *cli.CLI, opts deployOptions) error {
 	placement := api.Placement{
 		Machines: cli.ExpandCommaSeparatedValues(opts.machines),
 	}
-	d, err := clusterClient.NewCaddyDeployment(opts.image, placement)
+	d, err := clusterClient.NewCaddyDeployment(opts.image, caddyfile, placement)
 	if err != nil {
 		return fmt.Errorf("create caddy deployment: %w", err)
 	}

cmd/uncloud/caddy/root.go

@@ -10,6 +10,7 @@ func NewRootCommand() *cobra.Command {
 		Short: "Manage Caddy reverse proxy service.",
 	}
 	cmd.AddCommand(
+		NewConfigCommand(),
 		NewDeployCommand(),
 	)
 	return cmd

cmd/uncloud/deploy.go

@@ -21,6 +21,7 @@ type deployOptions struct {
 	profiles []string
 	services []string
 	noBuild  bool
+	recreate bool
 
 	context string
 }
@@ -50,6 +51,8 @@ func NewDeployCommand() *cobra.Command {
 		"Name of the cluster context to deploy to (default is the current context)")
 	cmd.Flags().BoolVarP(&opts.noBuild, "no-build", "n", false,
 		"Do not build images before deploying services. (default false)")
+	cmd.Flags().BoolVar(&opts.recreate, "recreate", false,
+		"Recreate containers even if their configuration and image haven't changed.")
 
 	// TODO: Consider adding a filter flag to specify which machines to deploy to but keep the rest running.
 	//  Could be useful to test a new version on a subset of machines before rolling out to all.
@@ -108,7 +111,11 @@ func runDeploy(ctx context.Context, uncli *cli.CLI, opts deployOptions) error {
 	}
 	defer clusterClient.Close()
 
-	composeDeploy, err := compose.NewDeployment(ctx, clusterClient, project)
+	var strategy deploy.Strategy
+	if opts.recreate {
+		strategy = &deploy.RollingStrategy{ForceRecreate: true}
+	}
+	composeDeploy, err := compose.NewDeploymentWithStrategy(ctx, clusterClient, project, strategy)
 	if err != nil {
 		return fmt.Errorf("create compose deployment: %w", err)
 	}

cmd/uncloud/docs.go

@@ -0,0 +1,122 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/cobra/doc"
+)
+
+const docsDir = "website/docs/9-cli-reference"
+
+type cmdWrapper struct {
+	cmd *cobra.Command
+}
+
+// NewDocsCommand creates a new hidden command to generate CLI reference docs.
+func NewDocsCommand() *cobra.Command {
+	wrapper := &cmdWrapper{}
+	cmd := &cobra.Command{
+		Use:                   "docs",
+		Short:                 "Generate Uncloud CLI reference docs",
+		SilenceUsage:          true,
+		DisableFlagsInUseLine: true,
+		Hidden:                true,
+		Args:                  cobra.NoArgs,
+		ValidArgsFunction:     cobra.NoFileCompletions,
+		RunE: func(cmd *cobra.Command, _ []string) error {
+			// Remove existing markdown files.
+			mdFiles, err := filepath.Glob(filepath.Join(docsDir, "*.md"))
+			if err != nil {
+				return fmt.Errorf("list existing CLI docs: %w", err)
+			}
+			for _, f := range mdFiles {
+				if err = os.Remove(f); err != nil {
+					return fmt.Errorf("remove '%s': %w", f, err)
+				}
+			}
+
+			// Generate new CLI reference docs.
+			wrapper.cmd.Root().DisableAutoGenTag = true
+			if err := doc.GenMarkdownTree(cmd.Root(), docsDir); err != nil {
+				return fmt.Errorf("generate CLI docs: %w", err)
+			}
+
+			// Remove *completion*.md files that contain malformatted code blocks that break Docusaurus.
+			mdFiles, err = filepath.Glob(filepath.Join(docsDir, "*completion*.md"))
+			if err != nil {
+				return fmt.Errorf("list generated CLI docs: %w", err)
+			}
+			for _, f := range mdFiles {
+				if err = os.Remove(f); err != nil {
+					return fmt.Errorf("remove '%s': %w", f, err)
+				}
+			}
+
+			// Post-process generated markdown files.
+			mdFiles, err = filepath.Glob(filepath.Join(docsDir, "*.md"))
+			if err != nil {
+				return fmt.Errorf("list generated CLI docs: %w", err)
+			}
+
+			for _, f := range mdFiles {
+				if err = postProcessMarkdown(f); err != nil {
+					return fmt.Errorf("post-process '%s': %w", f, err)
+				}
+			}
+
+			return nil
+		},
+	}
+
+	wrapper.cmd = cmd
+	return cmd
+}
+
+// postProcessMarkdown applies transformations to generated markdown files.
+func postProcessMarkdown(filename string) error {
+	data, err := os.ReadFile(filename)
+	if err != nil {
+		return err
+	}
+
+	content := string(data)
+
+	// Replace "SEE ALSO" with "See also".
+	content = strings.ReplaceAll(content, "SEE ALSO", "See also")
+	// Escape <id> to avoid Docusaurus treating it as an HTML tag.
+	content = strings.ReplaceAll(content, "<id>", "\\<id>")
+
+	// Remove broken links to completion docs.
+	if strings.Contains(content, "[uc completion") {
+		lines := strings.Split(content, "\n")
+		var filteredLines []string
+		for _, line := range lines {
+			if !strings.Contains(line, "[uc completion") {
+				filteredLines = append(filteredLines, line)
+			}
+		}
+		content = strings.Join(filteredLines, "\n")
+	}
+
+	// Adjust heading levels. Process from shortest to longest to avoid double replacements.
+	replacements := []struct {
+		old, new string
+	}{
+		{`(?m)^## `, `# `},
+		{`(?m)^### `, `## `},
+		{`(?m)^#### `, `### `},
+		{`(?m)^##### `, `#### `},
+	}
+
+	for _, r := range replacements {
+		re := regexp.MustCompile(r.old)
+		content = re.ReplaceAllString(content, r.new)
+	}
+
+	return os.WriteFile(filename, []byte(content), 0o644)
+}

cmd/uncloud/machine/add.go

@@ -41,7 +41,7 @@ func NewAddCommand() *cobra.Command {
 			if err != nil {
 				return fmt.Errorf("parse remote machine: %w", err)
 			}
-			remoteMachine := cli.RemoteMachine{
+			remoteMachine := &cli.RemoteMachine{
 				User:    user,
 				Host:    host,
 				Port:    port,
@@ -59,11 +59,12 @@ func NewAddCommand() *cobra.Command {
 	cmd.Flags().StringVar(
 		&opts.publicIP, "public-ip", "auto",
 		"Public IP address of the machine for ingress configuration. Use 'auto' for automatic detection, "+
-			"blank '' or 'none' to disable ingress on this machine, or specify an IP address.",
+			fmt.Sprintf("blank '' or '%s' to disable ingress on this machine, or specify an IP address.", PublicIPNone),
 	)
 	cmd.Flags().StringVarP(
-		&opts.sshKey, "ssh-key", "i", "~/.ssh/id_ed25519",
+		&opts.sshKey, "ssh-key", "i", "",
-		"Path to SSH private key for remote login (if not already added to SSH agent).",
+		fmt.Sprintf("Path to SSH private key for remote login (if not already added to SSH agent). (default %q)",
+			cli.DefaultSSHKeyPath),
 	)
 	cmd.Flags().StringVar(
 		&opts.version, "version", "latest",
@@ -77,12 +78,12 @@ func NewAddCommand() *cobra.Command {
 	return cmd
 }
 
-func add(ctx context.Context, uncli *cli.CLI, remoteMachine cli.RemoteMachine, opts addOptions) error {
+func add(ctx context.Context, uncli *cli.CLI, remoteMachine *cli.RemoteMachine, opts addOptions) error {
 	var publicIP *netip.Addr
 	switch opts.publicIP {
 	case "auto":
 		publicIP = &netip.Addr{}
-	case "", "none":
+	case "", PublicIPNone:
 		publicIP = nil
 	default:
 		ip, err := netip.ParseAddr(opts.publicIP)
@@ -145,7 +146,7 @@ func add(ctx context.Context, uncli *cli.CLI, remoteMachine cli.RemoteMachine, o
 
 	// TODO: scale the existing Caddy service to the new machine instead of running a new deployment
 	//  that may cause a small downtime.
-	d, err := clusterClient.NewCaddyDeployment(caddyImage, api.Placement{})
+	d, err := clusterClient.NewCaddyDeployment(caddyImage, "", api.Placement{})
 	if err != nil {
 		return fmt.Errorf("create caddy deployment: %w", err)
 	}

cmd/uncloud/machine/constants.go

@@ -0,0 +1,6 @@
+package machine
+
+const (
+	// PublicIPNone is the value used to indicate removal of public IP
+	PublicIPNone = "none"
+)

cmd/uncloud/machine/init.go

@@ -77,11 +77,12 @@ func NewInitCommand() *cobra.Command {
 	cmd.Flags().StringVar(
 		&opts.publicIP, "public-ip", "auto",
 		"Public IP address of the machine for ingress configuration. Use 'auto' for automatic detection, "+
-			"blank '' or 'none' to disable ingress on this machine, or specify an IP address.",
+			fmt.Sprintf("blank '' or '%s' to disable ingress on this machine, or specify an IP address.", PublicIPNone),
 	)
 	cmd.Flags().StringVarP(
-		&opts.sshKey, "ssh-key", "i", "~/.ssh/id_ed25519",
+		&opts.sshKey, "ssh-key", "i", "",
-		"Path to SSH private key for remote login (if not already added to SSH agent).",
+		fmt.Sprintf("Path to SSH private key for remote login (if not already added to SSH agent). (default %q)",
+			cli.DefaultSSHKeyPath),
 	)
 	cmd.Flags().StringVar(
 		&opts.version, "version", "latest",
@@ -105,7 +106,7 @@ func initCluster(ctx context.Context, uncli *cli.CLI, remoteMachine *cli.RemoteM
 	switch opts.publicIP {
 	case "auto":
 		publicIP = &netip.Addr{}
-	case "", "none":
+	case "", PublicIPNone:
 		publicIP = nil
 	default:
 		ip, err := netip.ParseAddr(opts.publicIP)
@@ -146,7 +147,7 @@ func initCluster(ctx context.Context, uncli *cli.CLI, remoteMachine *cli.RemoteM
 	}
 
 	if !opts.noCaddy {
-		d, err := client.NewCaddyDeployment("", api.Placement{})
+		d, err := client.NewCaddyDeployment("", "", api.Placement{})
 		if err != nil {
 			return fmt.Errorf("create caddy deployment: %w", err)
 		}

cmd/uncloud/machine/rename.go

@@ -0,0 +1,47 @@
+package machine
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/psviderski/uncloud/internal/cli"
+	"github.com/spf13/cobra"
+)
+
+func NewRenameCommand() *cobra.Command {
+	var contextName string
+	cmd := &cobra.Command{
+		Use:   "rename OLD_NAME NEW_NAME",
+		Short: "Rename a machine in the cluster.",
+		Long: `Rename a machine in the cluster.
+
+This command changes the name of an existing machine while preserving all other
+configuration including network settings, public IP, and cluster membership.`,
+		Args: cobra.ExactArgs(2),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			uncli := cmd.Context().Value("cli").(*cli.CLI)
+			return rename(cmd.Context(), uncli, contextName, args[0], args[1])
+		},
+	}
+	cmd.Flags().StringVarP(
+		&contextName, "context", "c", "",
+		"Name of the cluster context. (default is the current context)",
+	)
+	return cmd
+}
+
+func rename(ctx context.Context, uncli *cli.CLI, contextName, oldName, newName string) error {
+	client, err := uncli.ConnectCluster(ctx, contextName)
+	if err != nil {
+		return err
+	}
+	defer client.Close()
+
+	machine, err := client.RenameMachine(ctx, oldName, newName)
+	if err != nil {
+		return fmt.Errorf("rename machine: %w", err)
+	}
+
+	fmt.Printf("Machine %q renamed to %q (ID: %s)\n", oldName, machine.Name, machine.Id)
+	return nil
+}

cmd/uncloud/machine/rm.go

@@ -14,12 +14,13 @@ import (
 	"github.com/docker/compose/v2/pkg/progress"
 	"github.com/docker/docker/api/types/container"
 	"github.com/psviderski/uncloud/internal/cli"
+	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/spf13/cobra"
 )
 
 type removeOptions struct {
-	force   bool
+	noReset bool
 	yes     bool
 	context string
 }
@@ -30,7 +31,7 @@ func NewRmCommand() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "rm MACHINE",
 		Aliases: []string{"remove", "delete"},
-		Short:   "Remove a machine from a cluster.",
+		Short:   "Remove a machine from a cluster and reset it.",
 		Args:    cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			uncli := cmd.Context().Value("cli").(*cli.CLI)
@@ -42,11 +43,14 @@ func NewRmCommand() *cobra.Command {
 		"Name of the cluster context. (default is the current context)")
 	cmd.Flags().BoolVarP(&opts.yes, "yes", "y", false,
 		"Do not prompt for confirmation before removing the machine.")
+	cmd.Flags().BoolVar(&opts.noReset, "no-reset", false,
+		"Do not reset the machine after removing it from the cluster. This will leave all containers and data intact.")
 
 	return cmd
 }
 
-func remove(ctx context.Context, uncli *cli.CLI, machineName string, opts removeOptions) error {
+func remove(ctx context.Context, uncli *cli.CLI, nameOrID string, opts removeOptions) error {
+	// TODO: automatically choose a connection to the machine that is not being removed.
 	client, err := uncli.ConnectCluster(ctx, opts.context)
 	if err != nil {
 		return fmt.Errorf("connect to cluster: %w", err)
@@ -54,35 +58,66 @@ func remove(ctx context.Context, uncli *cli.CLI, machineName string, opts remove
 	defer client.Close()
 
 	// Verify the machine exists and list all service containers on it including stopped ones.
-	listCtx, machines, err := api.ProxyMachinesContext(ctx, client, []string{machineName})
+	mctx, machines, err := api.ProxyMachinesContext(ctx, client, []string{nameOrID})
 	if err != nil {
 		return err
 	}
 	if len(machines) == 0 {
-		return fmt.Errorf("machine '%s' not found in the cluster", machineName)
+		return fmt.Errorf("machine '%s' not found in the cluster", nameOrID)
 	}
 	m := machines[0].Machine
 
-	listOpts := container.ListOptions{All: true}
+	// Verify if the machine being removed is the proxy machine we're connected to.
-	machineContainers, err := client.Docker.ListServiceContainers(listCtx, "", listOpts)
+	proxyMachine, err := client.MachineClient.Inspect(ctx, nil)
 	if err != nil {
-		return fmt.Errorf("list containers: %w", err)
+		return fmt.Errorf("inspect proxy machine: %w", err)
 	}
-	containers := machineContainers[0].Containers
+	if proxyMachine.Id == m.Id {
+		allMachines, err := client.ListMachines(ctx, nil)
+		if err != nil {
+			return fmt.Errorf("list machines: %w", err)
+		}
+		if len(allMachines) > 1 {
+			return errors.New("cannot remove the machine you are currently connected to. " +
+				"Please connect to another machine in the cluster and try again. " +
+				"Use --connect flag or update 'connections' for the cluster context in your Uncloud config")
+			// It's ok to remove the proxy machine if it's the last one in the cluster.
+		}
+	}
 
-	if len(containers) > 0 {
+	// TODO: mark the machine as being removed and unschedulable when this is possible to prevent new containers
-		plural := ""
+	//  from being scheduled on it while the removal is in progress.
-		if len(containers) > 1 {
+
-			plural = "s"
+	reset := !opts.noReset
+	var containers []api.ServiceContainer
+	reachable := false
+	if reset {
+		// Check if the machine is up and has service containers.
+		listOpts := container.ListOptions{All: true}
+		machineContainers, err := client.Docker.ListServiceContainers(mctx, "", listOpts)
+		if err == nil {
+			reachable = true
+			containers = machineContainers[0].Containers
+			if len(containers) > 0 {
+				plural := ""
+				if len(containers) > 1 {
+					plural = "s"
+				}
+				fmt.Printf("Found %d service container%s on machine '%s':\n", len(containers), plural, m.Name)
+				fmt.Println(formatContainerTree(containers))
+				fmt.Println()
+				fmt.Println("This will remove all service containers from the machine, remove it from the cluster, " +
+					"and reset it to the uninitialised state.")
+			} else {
+				fmt.Printf("No service containers found on machine '%s'.\n", m.Name)
+				fmt.Println("This will remove the machine from the cluster and reset it to the uninitialised state.")
+			}
+		} else {
+			fmt.Printf("This will remove machine '%s' from the cluster without resetting it as it's unreachable.\n",
+				m.Name)
 		}
-		fmt.Printf("Found %d service container%s on machine '%s':\n", len(containers), plural, m.Name)
-		fmt.Println(formatContainerTree(containers))
-		fmt.Println()
-		fmt.Println("This will remove all service containers on the machine, reset it to the uninitialised state, " +
-			"and remove it from the cluster.")
 	} else {
-		fmt.Printf("No service containers found on machine '%s'.\n", m.Name)
+		fmt.Printf("This will remove machine '%s' from the cluster without resetting it.\n", m.Name)
-		fmt.Println("This will reset the machine to the uninitialised state and remove it from the cluster.")
 	}
 
 	if !opts.yes {
@@ -96,23 +131,37 @@ func remove(ctx context.Context, uncli *cli.CLI, machineName string, opts remove
 		}
 	}
 
-	if len(containers) > 0 {
+	if reset && len(containers) > 0 {
 		err = progress.RunWithTitle(ctx, func(ctx context.Context) error {
 			return removeContainers(ctx, client, containers)
 		}, uncli.ProgressOut(), "Removing containers")
-
 		if err != nil {
 			return fmt.Errorf("remove containers: %w", err)
 		}
 		fmt.Println()
 	}
 
-	// TODO: 4. Implement and call Reset via Machine API to reset the machine state to uninitialised.
+	if _, err = client.RemoveMachine(ctx, &pb.RemoveMachineRequest{Id: m.Id}); err != nil {
-	// TODO: 5. Remove the machine from the cluster store.
+		return fmt.Errorf("remove machine from cluster: %w", err)
+	}
+	fmt.Printf("Machine '%s' removed from the cluster.\n", m.Name)
 
-	return fmt.Errorf("resetting machine is not fully implemented yet")
+	if reset && reachable {
-	//fmt.Printf("Machine '%s' removed from the cluster.\n", m.Name)
+		_, err = client.MachineClient.Reset(mctx, &pb.ResetRequest{})
-	//return nil
+		if err != nil {
+			fmt.Printf("WARNING: Failed to reset machine: %v\n", err)
+		} else {
+			fmt.Println("Machine reset initiated and will complete in the background.")
+		}
+	}
+
+	// TODO: remove the connection to the machine from the uncloud config if it exists. We need a way to associate
+	//  the machine with its connection in the config, e.g. by storing the machine name in the connection metadata.
+
+	// TODO: If Caddy was running on this machine and a cluster domain is reserved,
+	//  let the user know that the DNS records should be updated.
+
+	return nil
 }
 
 // formatContainerTree formats a list of containers grouped by service as a tree structure.

cmd/uncloud/machine/root.go

@@ -14,7 +14,9 @@ func NewRootCommand() *cobra.Command {
 		NewAddCommand(),
 		NewInitCommand(),
 		NewListCommand(),
+		NewRenameCommand(),
 		NewRmCommand(),
+		NewUpdateCommand(),
 		NewTokenCommand(),
 	)
 	return cmd

cmd/uncloud/machine/token.go

@@ -2,9 +2,10 @@ package machine
 
 import (
 	"fmt"
-	"github.com/spf13/cobra"
+
 	"github.com/psviderski/uncloud/internal/daemon"
 	"github.com/psviderski/uncloud/internal/machine"
+	"github.com/spf13/cobra"
 )
 
 type tokenOptions struct {

cmd/uncloud/machine/update.go

@@ -0,0 +1,128 @@
+package machine
+
+import (
+	"context"
+	"fmt"
+	"net/netip"
+
+	"github.com/psviderski/uncloud/internal/cli"
+	"github.com/psviderski/uncloud/internal/machine/api/pb"
+	"github.com/spf13/cobra"
+)
+
+type updateOptions struct {
+	name     string
+	publicIP string
+	context  string
+}
+
+func NewUpdateCommand() *cobra.Command {
+	opts := updateOptions{}
+	cmd := &cobra.Command{
+		Use:   "update",
+		Short: "Update machine configuration in the cluster.",
+		Long: `Update machine configuration in the cluster.
+
+This command allows setting various machine properties including:
+- Machine name (--name)
+- Public IP address (--public-ip)
+
+At least one flag must be specified to perform an update operation.`,
+		Args: cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			uncli := cmd.Context().Value("cli").(*cli.CLI)
+			return update(cmd.Context(), uncli, cmd, opts, args[0])
+		},
+	}
+
+	cmd.Flags().StringVar(
+		&opts.name, "name", "",
+		"New name for the machine",
+	)
+	cmd.Flags().StringVar(
+		&opts.publicIP, "public-ip", "",
+		fmt.Sprintf("Public IP address of the machine for ingress configuration. Use '%s' or '' to remove the public IP.", PublicIPNone),
+	)
+	cmd.Flags().StringVarP(
+		&opts.context, "context", "c", "",
+		"Name of the cluster context. (default is the current context)",
+	)
+
+	return cmd
+}
+
+func update(ctx context.Context, uncli *cli.CLI, cmd *cobra.Command, opts updateOptions, machineNameOrID string) error {
+	// Check if at least one flag was explicitly set
+	if !cmd.Flags().Changed("name") && !cmd.Flags().Changed("public-ip") {
+		return fmt.Errorf("at least one update flag must be specified (--name, --public-ip)")
+	}
+
+	client, err := uncli.ConnectCluster(ctx, opts.context)
+	if err != nil {
+		return err
+	}
+	defer client.Close()
+
+	// First, resolve the machine to get its ID
+	machine, err := client.InspectMachine(ctx, machineNameOrID)
+	if err != nil {
+		return fmt.Errorf("find machine: %w", err)
+	}
+
+	// Build the update request
+	req := &pb.UpdateMachineRequest{
+		MachineId: machine.Machine.Id,
+	}
+
+	if opts.name != "" {
+		req.Name = &opts.name
+	}
+
+	// Check if --public-ip flag was explicitly provided
+	if cmd.Flags().Changed("public-ip") {
+		if opts.publicIP == "" || opts.publicIP == PublicIPNone {
+			req.PublicIp = &pb.IP{} // Empty IP to signal removal
+		} else {
+			// Parse and validate the public IP
+			ip, err := netip.ParseAddr(opts.publicIP)
+			if err != nil {
+				return fmt.Errorf("invalid public IP address %q: %w", opts.publicIP, err)
+			}
+			req.PublicIp = pb.NewIP(ip)
+		}
+	}
+
+	// Perform the update operation
+	updatedMachine, err := client.UpdateMachine(ctx, req)
+	if err != nil {
+		return fmt.Errorf("update machine: %w", err)
+	}
+
+	// Report what was changed
+	changes := make([]string, 0)
+	if opts.name != "" {
+		changes = append(changes, fmt.Sprintf("name: %q -> %q", machine.Machine.Name, updatedMachine.Name))
+	}
+	if cmd.Flags().Changed("public-ip") {
+		oldIP := PublicIPNone
+		if machine.Machine.PublicIp != nil {
+			if addr, err := machine.Machine.PublicIp.ToAddr(); err == nil {
+				oldIP = addr.String()
+			}
+		}
+		newIP := PublicIPNone
+		if updatedMachine.PublicIp != nil {
+			if addr, err := updatedMachine.PublicIp.ToAddr(); err == nil {
+				newIP = addr.String()
+			}
+		}
+		changes = append(changes, fmt.Sprintf("public IP: %s -> %s", oldIP, newIP))
+	}
+
+	fmt.Printf("Machine %q (ID: %s) configuration updated:\n", updatedMachine.Name, updatedMachine.Id)
+	for _, change := range changes {
+		fmt.Printf("  %s\n", change)
+	}
+
+	return nil
+}

cmd/uncloud/main.go

@@ -27,7 +27,7 @@ type globalOptions struct {
 func main() {
 	opts := globalOptions{}
 	cmd := &cobra.Command{
-		Use:           "uncloud",
+		Use:           "uc",
 		Short:         "A CLI tool for managing Uncloud resources such as clusters, machines, and services.",
 		Version:       version.String(),
 		SilenceUsage:  true,
@@ -75,6 +75,7 @@ func main() {
 
 	cmd.AddCommand(
 		NewDeployCommand(),
+		NewDocsCommand(),
 		NewBuildCommand(),
 		caddy.NewRootCommand(),
 		cmdcontext.NewRootCommand(),

cmd/uncloud/service/inspect.go

@@ -9,7 +9,6 @@ import (
 
 	"github.com/docker/docker/pkg/stringid"
 	"github.com/docker/go-units"
-
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/spf13/cobra"
 )

cmd/uncloud/service/run.go

@@ -17,6 +17,7 @@ import (
 )
 
 type runOptions struct {
+	caddyfile         string
 	command           []string
 	cpu               dockeropts.NanoCPUs
 	entrypoint        string
@@ -57,6 +58,9 @@ func NewRunCommand() *cobra.Command {
 		},
 	}
 
+	cmd.Flags().StringVar(&opts.caddyfile, "caddyfile", "",
+		"Path to a custom Caddy config (Caddyfile) for the service. "+
+			"Cannot be used together with non-@host published ports.")
 	cmd.Flags().VarP(&opts.cpu, "cpu", "",
 		"Maximum number of CPU cores a service container can use. Fractional values are allowed: "+
 			"0.5 for half a core or 2.25 for two and a quarter cores.")
@@ -82,7 +86,7 @@ func NewRunCommand() *cobra.Command {
 		"Give extended privileges to service containers. This is a security risk and should be used with caution.")
 	cmd.Flags().StringSliceVarP(&opts.publish, "publish", "p", nil,
 		"Publish a service port to make it accessible outside the cluster. Can be specified multiple times.\n"+
-			"Format: [hostname:][load_balancer_port:]container_port[/protocol] or [host_ip:]:host_port:container_port[/protocol]@host\n"+
+			"Format: [hostname:]container_port[/protocol] or [host_ip:]host_port:container_port[/protocol]@host\n"+
 			"Supported protocols: tcp, udp, http, https (default is tcp). If a hostname for http(s) port is not specified\n"+
 			"and a cluster domain is reserved, service-name.cluster-domain will be used as the hostname.\n"+
 			"Examples:\n"+
@@ -161,6 +165,15 @@ func run(ctx context.Context, uncli *cli.CLI, opts runOptions) error {
 func prepareServiceSpec(opts runOptions) (api.ServiceSpec, error) {
 	var spec api.ServiceSpec
 
+	caddyfile := ""
+	if opts.caddyfile != "" {
+		data, err := os.ReadFile(opts.caddyfile)
+		if err != nil {
+			return spec, fmt.Errorf("read Caddyfile: %w", err)
+		}
+		caddyfile = strings.TrimSpace(string(data))
+	}
+
 	env, err := parseEnv(opts.env)
 	if err != nil {
 		return spec, err
@@ -218,6 +231,12 @@ func prepareServiceSpec(opts runOptions) (api.ServiceSpec, error) {
 		Volumes:   volumes,
 	}
 
+	if caddyfile != "" {
+		spec.Caddy = &api.CaddySpec{
+			Config: caddyfile,
+		}
+	}
+
 	// Overwrite the default ENTRYPOINT of the image or reset it if an empty string is passed.
 	if opts.entrypoint != "" {
 		spec.Container.Entrypoint = []string{opts.entrypoint}

docs/README.md

@@ -1,41 +0,0 @@
-# Website
-
-This website is built using [Docusaurus](https://docusaurus.io/), a modern static website generator.
-
-### Installation
-
-```
-$ yarn
-```
-
-### Local Development
-
-```
-$ yarn start
-```
-
-This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
-
-### Build
-
-```
-$ yarn build
-```
-
-This command generates static content into the `build` directory and can be served using any static contents hosting service.
-
-### Deployment
-
-Using SSH:
-
-```
-$ USE_SSH=true yarn deploy
-```
-
-Not using SSH:
-
-```
-$ GIT_USER=<Your GitHub username> yarn deploy
-```
-
-If you are using GitHub pages for hosting, this command is a convenient way to build the website and push to the `gh-pages` branch.

docs/compose.yaml

@@ -1,8 +0,0 @@
-services:
-  uncloud-docs:
-    image: ghcr.io/psviderski/uncloud-docs:latest
-    pull_policy: always
-    user: nobody
-    x-ports:
-      - docs.uncloud.run:8000/https
-    scale: 2

docs/package.json

@@ -1,45 +0,0 @@
-{
-  "name": "docs",
-  "version": "0.0.0",
-  "private": true,
-  "scripts": {
-    "docusaurus": "docusaurus",
-    "start": "docusaurus start",
-    "build": "docusaurus build",
-    "swizzle": "docusaurus swizzle",
-    "deploy": "docusaurus deploy",
-    "clear": "docusaurus clear",
-    "serve": "docusaurus serve",
-    "write-translations": "docusaurus write-translations",
-    "write-heading-ids": "docusaurus write-heading-ids"
-  },
-  "dependencies": {
-    "@docusaurus/core": "3.7.0",
-    "@docusaurus/preset-classic": "3.7.0",
-    "@easyops-cn/docusaurus-search-local": "^0.49.2",
-    "@mdx-js/react": "^3.0.0",
-    "clsx": "^2.0.0",
-    "prism-react-renderer": "^2.3.0",
-    "react": "^19.0.0",
-    "react-dom": "^19.0.0"
-  },
-  "devDependencies": {
-    "@docusaurus/module-type-aliases": "3.7.0",
-    "@docusaurus/types": "3.7.0"
-  },
-  "browserslist": {
-    "production": [
-      ">0.5%",
-      "not dead",
-      "not op_mini all"
-    ],
-    "development": [
-      "last 3 chrome version",
-      "last 3 firefox version",
-      "last 5 safari version"
-    ]
-  },
-  "engines": {
-    "node": ">=18.0"
-  }
-}

experiment/broadcaster.go

@@ -3,10 +3,11 @@ package main
 import (
 	"context"
 	"fmt"
-	"github.com/hashicorp/serf/serf"
-	crdt "github.com/ipfs/go-ds-crdt"
 	"log/slog"
 	"time"
+
+	"github.com/hashicorp/serf/serf"
+	crdt "github.com/ipfs/go-ds-crdt"
 )
 
 // Implements the Broadcaster interface.

experiment/explorer/explorer.go

@@ -2,9 +2,10 @@ package main
 
 import (
 	"fmt"
-	"github.com/dgraph-io/badger/v3"
 	"log"
 	"time"
+
+	"github.com/dgraph-io/badger/v3"
 )
 
 func customTimeEncoder(t time.Time) string {

experiment/logger.go

@@ -2,9 +2,10 @@ package main
 
 import (
 	"fmt"
-	"github.com/ipfs/go-log/v2"
 	"log/slog"
 	"os"
+
+	"github.com/ipfs/go-log/v2"
 )
 
 // ipfsLogger is an slog logger that implements the IPFS go-log StandardLogger interface.

experiment/networkdb/main.go

@@ -2,12 +2,13 @@ package main
 
 import (
 	"fmt"
-	"github.com/docker/docker/libnetwork/networkdb"
 	"log/slog"
 	"os"
 	"os/signal"
 	"syscall"
 	"time"
+
+	"github.com/docker/docker/libnetwork/networkdb"
 )
 
 func main() {

experiment/serf_crdt.go

@@ -4,6 +4,13 @@ import (
 	"context"
 	"flag"
 	"fmt"
+	"log/slog"
+	"net"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
 	"github.com/hashicorp/memberlist"
 	"github.com/hashicorp/serf/cmd/serf/command/agent"
 	"github.com/hashicorp/serf/serf"
@@ -11,12 +18,6 @@ import (
 	badger "github.com/ipfs/go-ds-badger3"
 	crdt "github.com/ipfs/go-ds-crdt"
 	"github.com/lmittmann/tint"
-	"log/slog"
-	"net"
-	"os"
-	"os/signal"
-	"syscall"
-	"time"
 )
 
 func createSerfAgentConfig(name, bindAddr, rpcAddr, profile string) *agent.Config {
@@ -49,9 +50,9 @@ func createSerfAgent(config *agent.Config) (*agent.Agent, error) {
 
 	serfConfig.MemberlistConfig.BindAddr = bindIP
 	serfConfig.MemberlistConfig.BindPort = bindPort
-	//serfConfig.MemberlistConfig.AdvertiseAddr = advertiseIP
+	// serfConfig.MemberlistConfig.AdvertiseAddr = advertiseIP
-	//serfConfig.MemberlistConfig.AdvertisePort = advertisePort
+	// serfConfig.MemberlistConfig.AdvertisePort = advertisePort
-	//serfConfig.MemberlistConfig.SecretKey = encryptKey
+	// serfConfig.MemberlistConfig.SecretKey = encryptKey
 	serfConfig.NodeName = config.NodeName
 	serfConfig.Tags = config.Tags
 	serfConfig.SnapshotPath = config.SnapshotPath
@@ -129,7 +130,7 @@ func main() {
 	logger := slog.New(tint.NewHandler(os.Stdout, &tint.Options{
 		AddSource: true,
 		Level:     slog.LevelDebug,
-		//Level:      slog.LevelInfo,
+		// Level:      slog.LevelInfo,
 		TimeFormat: time.RFC3339Nano,
 	}))
 	slog.SetDefault(logger)
@@ -164,7 +165,7 @@ func main() {
 
 	opts := crdt.DefaultOptions()
 	opts.Logger = newIPFSLogger(logger)
-	//opts.MultiHeadProcessing = true
+	// opts.MultiHeadProcessing = true
 	// TODO: debug why the heads count may grow on the receiving side if the event backlog is huge and the processing
 	//  is slow.
 	store, err := crdt.New(localStore, ds.NewKey("/"), syncer, broadcaster, opts)
@@ -172,7 +173,7 @@ func main() {
 		panic(err)
 	}
 
-	//ticker := time.NewTicker(10 * time.Millisecond)
+	// ticker := time.NewTicker(10 * time.Millisecond)
 	ticker := time.NewTicker(3 * time.Second)
 	go func() {
 		for {

experiment/syncer.go

@@ -4,18 +4,19 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"log/slog"
+
 	"github.com/hashicorp/serf/serf"
 	"github.com/ipfs/boxo/datastore/dshelp"
 	dag "github.com/ipfs/boxo/ipld/merkledag"
 	"github.com/ipfs/go-cid"
 	ds "github.com/ipfs/go-datastore"
 	ipld "github.com/ipfs/go-ipld-format"
-	"log/slog"
 )
 
 // Implements the DAGService interface.
 // TODO: implement SessionDAGService to optimize node fetching.
-// TOOD: persistentSerfDAG?
+// TODO: persistentSerfDAG?
 type dagSyncer struct {
 	// Persistent storage for the nodes.
 	store     ds.Datastore
@@ -50,8 +51,7 @@ func (d *dagSyncer) Get(ctx context.Context, cid cid.Cid) (ipld.Node, error) {
 	}
 	slog.Debug("Queried node from peers", "cid", cid, "deadline", query.Deadline())
 
-	responded := false
+	for {
-	for !responded {
 		select {
 		case resp, ok := <-query.ResponseCh():
 			if !ok {
@@ -63,7 +63,6 @@ func (d *dagSyncer) Get(ctx context.Context, cid cid.Cid) (ipld.Node, error) {
 				continue
 			}
 			slog.Debug("Received node from peer", "cid", cid, "peer", resp.From)
-			responded = true
 			query.Close()
 
 			node, err = nodeFromBytes(resp.Payload)

experiment/talos_discovery.go

@@ -6,12 +6,13 @@ import (
 	"crypto/cipher"
 	"encoding/hex"
 	"fmt"
+	"net/netip"
+	"time"
+
+	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/siderolabs/discovery-api/api/v1alpha1/client/pb"
 	discovery "github.com/siderolabs/discovery-client/pkg/client"
 	"go.uber.org/zap"
-	"net/netip"
-	"time"
-	"github.com/psviderski/uncloud/internal/machine/network"
 )
 
 const (

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/BurntSushi/toml v1.4.0
 	github.com/Masterminds/semver v1.5.0
 	github.com/Masterminds/squirrel v1.5.4
+	github.com/alecthomas/chroma/v2 v2.20.0
 	github.com/caddyserver/caddy/v2 v2.8.4
 	github.com/cenkalti/backoff/v4 v4.3.0
 	github.com/charmbracelet/huh v0.6.0
@@ -35,6 +36,7 @@ require (
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/lmittmann/tint v1.0.5
 	github.com/miekg/dns v1.1.65
+	github.com/mitchellh/mapstructure v1.5.0
 	github.com/moby/term v0.5.0
 	github.com/opencontainers/go-digest v1.0.0
 	github.com/opencontainers/image-spec v1.1.0
@@ -107,6 +109,7 @@ require (
 	github.com/dgraph-io/badger/v2 v2.2007.4 // indirect
 	github.com/dgraph-io/ristretto v0.1.1 // indirect
 	github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 // indirect
+	github.com/dlclark/regexp2 v1.11.5 // indirect
 	github.com/docker/buildx v0.18.0 // indirect
 	github.com/docker/distribution v2.8.3+incompatible // indirect
 	github.com/docker/docker-credential-helpers v0.8.2 // indirect
@@ -204,7 +207,6 @@ require (
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
 	github.com/mitchellh/go-ps v1.0.0 // indirect
 	github.com/mitchellh/hashstructure/v2 v2.0.2 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
 	github.com/moby/buildkit v0.17.2 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
@@ -265,6 +267,7 @@ require (
 	github.com/spf13/cast v1.7.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stoewer/go-strcase v1.2.0 // indirect
+	github.com/stretchr/objx v0.5.2 // indirect
 	github.com/tailscale/tscert v0.0.0-20240517230440-bbccfbf48933 // indirect
 	github.com/theupdateframework/notary v0.7.0 // indirect
 	github.com/tonistiigi/dchapes-mode v0.0.0-20241001053921-ca0759fec205 // indirect

go.sum

@@ -53,6 +53,12 @@ github.com/OneOfOne/xxhash v1.2.8/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdII
 github.com/Shopify/logrus-bugsnag v0.0.0-20170309145241-6dbc35f2c30d/go.mod h1:HI8ITrYtUY+O+ZhtlqUnD8+KwNPOyugEhfP9fdUIaEQ=
 github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d h1:UrqY+r/OJnIp5u0s1SbQ8dVfLCZJsnvazdBP5hS4iRs=
 github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d/go.mod h1:HI8ITrYtUY+O+ZhtlqUnD8+KwNPOyugEhfP9fdUIaEQ=
+github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
+github.com/alecthomas/assert/v2 v2.11.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
+github.com/alecthomas/chroma/v2 v2.20.0 h1:sfIHpxPyR07/Oylvmcai3X/exDlE8+FA820NTz+9sGw=
+github.com/alecthomas/chroma/v2 v2.20.0/go.mod h1:e7tViK0xh/Nf4BYHl00ycY6rV7b8iXBksI9E359yNmA=
+github.com/alecthomas/repr v0.5.1 h1:E3G4t2QbHTSNpPKBgMTln5KLkZHLOcU7r37J4pXBuIg=
+github.com/alecthomas/repr v0.5.1/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
@@ -259,6 +265,8 @@ github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13 h1:fAjc9m62+UWV/WA
 github.com/dgryski/go-farm v0.0.0-20200201041132-a6ae2369ad13/go.mod h1:SqUrOPUnsFjfmXRMNPybcSiG0BgUW2AuFH8PAnS2iTw=
 github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk=
 github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
+github.com/dlclark/regexp2 v1.11.5 h1:Q/sSnsKerHeCkc/jSTNq1oCm7KiVgUMZRDUoRu0JQZQ=
+github.com/dlclark/regexp2 v1.11.5/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
 github.com/docker/buildx v0.18.0 h1:rSauXHeJt90NvtXrLK5J992Eb0UPJZs2vV3u1zTf1nE=
 github.com/docker/buildx v0.18.0/go.mod h1:JGNSshOhHs5FhG3u51jXUf4lLOeD2QBIlJ2vaRB67p4=
 github.com/docker/cli v27.5.0+incompatible h1:aMphQkcGtpHixwwhAXJT1rrK/detk2JIvDaFkLctbGM=
@@ -487,6 +495,8 @@ github.com/hashicorp/memberlist v0.5.1 h1:mk5dRuzeDNis2bi6LLoQIXfMH7JQvAzt3mQD0v
 github.com/hashicorp/memberlist v0.5.1/go.mod h1:zGDXV6AqbDTKTM6yxW0I4+JtFzZAJVoIPvss4hV8F24=
 github.com/hashicorp/serf v0.10.1 h1:Z1H2J60yRKvfDYAOZLd2MU0ND4AH/WDz7xYHDWQsIPY=
 github.com/hashicorp/serf v0.10.1/go.mod h1:yL2t6BqATOLGc5HF7qbFkTfXoPIY0WZdWHfEvMqbG+4=
+github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
+github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/huandu/xstrings v1.3.1/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
 github.com/huandu/xstrings v1.3.2/go.mod h1:y5/lhBue+AyNmUVz9RLU9xbLR0o4KIIExikq4ovT0aE=
@@ -1039,6 +1049,7 @@ github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
 github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=

internal/cli/cli.go

@@ -6,8 +6,8 @@ import (
 	"fmt"
 	"net/netip"
 	"os"
+	"slices"
 
-	"github.com/charmbracelet/huh"
 	"github.com/docker/cli/cli/streams"
 	"github.com/psviderski/uncloud/internal/cli/config"
 	"github.com/psviderski/uncloud/internal/fs"
@@ -22,7 +22,12 @@ import (
 	"google.golang.org/protobuf/types/known/emptypb"
 )
 
-const defaultContextName = "default"
+const (
+	// DefaultSSHKeyPath is the fallback location for the SSH private key when provisioning remote machines.
+	// Used when no key is explicitly provided and SSH agent authentication fails.
+	DefaultSSHKeyPath  = "~/.ssh/id_ed25519"
+	defaultContextName = "default"
+)
 
 type CLI struct {
 	Config *config.Config
@@ -173,7 +178,7 @@ func (cli *CLI) initRemoteMachine(ctx context.Context, opts InitClusterOptions)
 		return nil, fmt.Errorf("cluster context '%s' already exists", contextName)
 	}
 
-	machineClient, err := cli.provisionRemoteMachine(ctx, *opts.RemoteMachine, opts.Version)
+	machineClient, err := provisionRemoteMachine(ctx, opts.RemoteMachine, opts.Version)
 	if err != nil {
 		return nil, err
 	}
@@ -190,7 +195,7 @@ func (cli *CLI) initRemoteMachine(ctx context.Context, opts InitClusterOptions)
 		return nil, fmt.Errorf("inspect machine: %w", err)
 	}
 	if minfo.Id != "" {
-		if err = cli.promptResetMachine(); err != nil {
+		if err = promptResetMachine(ctx, machineClient.MachineClient); err != nil {
 			return nil, err
 		}
 	}
@@ -249,7 +254,7 @@ type AddMachineOptions struct {
 	Context       string
 	MachineName   string
 	PublicIP      *netip.Addr
-	RemoteMachine RemoteMachine
+	RemoteMachine *RemoteMachine
 	Version       string
 }
 
@@ -272,7 +277,7 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (*client
 		}
 	}()
 
-	machineClient, err := cli.provisionRemoteMachine(ctx, opts.RemoteMachine, opts.Version)
+	machineClient, err := provisionRemoteMachine(ctx, opts.RemoteMachine, opts.Version)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -288,7 +293,18 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (*client
 		return nil, nil, fmt.Errorf("inspect machine: %w", err)
 	}
 	if minfo.Id != "" {
-		if err = cli.promptResetMachine(); err != nil {
+		// Check if the machine is already a member of this cluster.
+		machines, err := c.ListMachines(ctx, nil)
+		if err != nil {
+			return nil, nil, fmt.Errorf("list cluster machines: %w", err)
+		}
+		if slices.ContainsFunc(machines, func(m *pb.MachineMember) bool {
+			return m.Machine.Id == minfo.Id
+		}) {
+			return nil, nil, fmt.Errorf("machine is already a member of this cluster (%s)", minfo.Name)
+		}
+
+		if err = promptResetMachine(ctx, machineClient.MachineClient); err != nil {
 			return nil, nil, err
 		}
 	}
@@ -339,7 +355,7 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (*client
 		return nil, nil, fmt.Errorf("add machine to cluster (context '%s'): %w", contextName, err)
 	}
 
-	// List other machines in the cluster to include them in the join request.
+	// Get the most up-to-date list of other machines in the cluster to include them in the join request.
 	machines, err := c.ListMachines(ctx, nil)
 	if err != nil {
 		return nil, nil, fmt.Errorf("list cluster machines: %w", err)
@@ -382,11 +398,20 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (*client
 // provisionRemoteMachine installs the Uncloud daemon and dependencies on the remote machine over SSH and returns
 // a machine API client to interact with the machine. The client should be closed after use by the caller.
 // The version parameter specifies the version of the Uncloud daemon to install. If empty, the latest version is used.
-func (cli *CLI) provisionRemoteMachine(
+// The remoteMachine.SSHKeyPath could be updated to the default SSH key path if it is not set and the SSH agent
-	ctx context.Context, remoteMachine RemoteMachine, version string,
+// authentication fails.
+func provisionRemoteMachine(
+	ctx context.Context, remoteMachine *RemoteMachine, version string,
 ) (*client.Client, error) {
 	// Provision the remote machine by installing the Uncloud daemon and dependencies over SSH.
 	sshClient, err := sshexec.Connect(remoteMachine.User, remoteMachine.Host, remoteMachine.Port, remoteMachine.KeyPath)
+	// If the SSH connection using SSH agent fails and no key path is provided, try to use the default SSH key.
+	if err != nil && remoteMachine.KeyPath == "" {
+		remoteMachine.KeyPath = DefaultSSHKeyPath
+		sshClient, err = sshexec.Connect(
+			remoteMachine.User, remoteMachine.Host, remoteMachine.Port, remoteMachine.KeyPath,
+		)
+	}
 	if err != nil {
 		return nil, fmt.Errorf(
 			"SSH login to remote machine %s: %w",
@@ -420,31 +445,6 @@ func (cli *CLI) provisionRemoteMachine(
 	return machineClient, nil
 }
 
-func (cli *CLI) promptResetMachine() error {
-	var confirm bool
-	form := huh.NewForm(
-		huh.NewGroup(
-			huh.NewConfirm().
-				Title(
-					"The remote machine is already initialised as a cluster member. Do you want to reset it first?",
-				).
-				Affirmative("Yes!").
-				Negative("No").
-				Value(&confirm),
-		),
-	).WithAccessible(true)
-	if err := form.Run(); err != nil {
-		return fmt.Errorf("prompt user to confirm: %w", err)
-	}
-
-	if !confirm {
-		return fmt.Errorf("remote machine is already initialised as a cluster member")
-	}
-	// TODO: implement resetting the remote machine.
-	return fmt.Errorf("resetting the remote machine is not implemented yet. " +
-		"Please manually run 'uncloud-uninstall' on the remote machine to fully uninstall Uncloud from it")
-}
-
 // ProgressOut returns an output stream for progress writer.
 func (cli *CLI) ProgressOut() *streams.Out {
 	return streams.NewOut(os.Stdout)

internal/cli/config/config.go

@@ -53,11 +53,11 @@ func (c *Config) Read() error {
 
 func (c *Config) Save() error {
 	dir, _ := filepath.Split(c.path)
-	if err := os.MkdirAll(dir, 0700); err != nil {
+	if err := os.MkdirAll(dir, 0o700); err != nil {
 		return fmt.Errorf("create config directory '%s': %w", dir, err)
 	}
 
-	f, err := os.OpenFile(c.path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
+	f, err := os.OpenFile(c.path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o600)
 	if err != nil {
 		return fmt.Errorf("write config file '%s': %w", c.path, err)
 	}

internal/cli/machine.go

@@ -5,12 +5,20 @@ import (
 	"fmt"
 	"os"
 	"strings"
+	"time"
 
+	"github.com/cenkalti/backoff/v4"
+	"github.com/charmbracelet/huh"
+	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/sshexec"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
-// TODO: support pinning the script version to the CLI version.
+const (
-const installScriptURL = "https://raw.githubusercontent.com/psviderski/uncloud/refs/heads/main/scripts/install.sh"
+	// TODO: support pinning the script version to the CLI version.
+	installScriptURL = "https://raw.githubusercontent.com/psviderski/uncloud/refs/heads/main/scripts/install.sh"
+	rootUser         = "root"
+)
 
 type RemoteMachine struct {
 	User    string
@@ -24,7 +32,7 @@ func installCmd(user string, version string) string {
 	var env []string
 
 	// Add the SSH user (non-root) to the uncloud group to allow access to the Uncloud daemon unix socket.
-	if user != "root" {
+	if user != rootUser {
 		sudoPrefix = "sudo"
 		env = append(env, "UNCLOUD_GROUP_ADD_USER="+sshexec.Quote(user))
 	}
@@ -46,6 +54,26 @@ func provisionMachine(ctx context.Context, exec sshexec.Executor, version string
 		return fmt.Errorf("run whoami: %w", err)
 	}
 
+	if user != rootUser {
+		// 'sudo -n' is not used because it fails with 'sudo: a password is required' when the user has no password
+		// in /etc/shadow even though it may have valid sudo access.
+		out, err := exec.Run(ctx, "sudo true")
+		if err != nil {
+			if strings.Contains(out, "password is required") {
+				return fmt.Errorf(
+					"user '%[1]s' requires a password for sudo, but Uncloud needs passwordless sudo or root access "+
+						"to install and configure the uncloudd daemon on the remote machine.\n\n"+
+						"Possible solutions:\n"+
+						"1. Use root user or a user with passwordless sudo instead.\n"+
+						"2. Configure passwordless sudo for the user '%[1]s' by running on the remote machine:\n"+
+						"   echo '%[1]s ALL=(ALL) NOPASSWD:ALL' | sudo tee /etc/sudoers.d/%[1]s",
+					user)
+			}
+			return fmt.Errorf("sudo command failed for user '%s': %w. "+
+				"Please ensure the user has sudo privileges or use root user instead", user, err)
+		}
+	}
+
 	cmd := installCmd(user, version)
 
 	fmt.Println("Downloading Uncloud install script:", installScriptURL)
@@ -56,3 +84,56 @@ func provisionMachine(ctx context.Context, exec sshexec.Executor, version string
 	}
 	return nil
 }
+
+func promptResetMachine(ctx context.Context, machineClient pb.MachineClient) error {
+	var confirm bool
+	form := huh.NewForm(
+		huh.NewGroup(
+			huh.NewConfirm().
+				Title(
+					"The remote machine is already initialised as a cluster member. Do you want to reset it first?\n" +
+						"This will:\n" +
+						"- Remove all service containers from the machine\n" +
+						"- Reset the machine to the uninitialised state",
+				).
+				Affirmative("Yes!").
+				Negative("No").
+				Value(&confirm),
+		),
+	).WithAccessible(true)
+	if err := form.Run(); err != nil {
+		return fmt.Errorf("prompt user to confirm: %w", err)
+	}
+
+	if !confirm {
+		return fmt.Errorf("remote machine is already initialised as a cluster member")
+	}
+
+	if _, err := machineClient.Reset(ctx, &pb.ResetRequest{}); err != nil {
+		return fmt.Errorf("reset remote machine: %w. You can also manually run 'uncloud-uninstall' "+
+			"on the remote machine to fully uninstall Uncloud from it", err)
+	}
+	fmt.Println("Resetting the remote machine...")
+	if err := waitMachineReady(ctx, machineClient, 1*time.Minute); err != nil {
+		return fmt.Errorf("wait for machine to be ready after reset: %w", err)
+	}
+
+	return nil
+}
+
+// waitMachineReady waits for the machine to be ready to serve requests.
+func waitMachineReady(ctx context.Context, machineClient pb.MachineClient, timeout time.Duration) error {
+	boff := backoff.WithContext(backoff.NewExponentialBackOff(
+		backoff.WithMaxInterval(1*time.Second),
+		backoff.WithMaxElapsedTime(timeout),
+	), ctx)
+
+	inspect := func() error {
+		_, err := machineClient.Inspect(ctx, &emptypb.Empty{})
+		if err != nil {
+			return fmt.Errorf("inspect machine: %w", err)
+		}
+		return nil
+	}
+	return backoff.Retry(inspect, boff)
+}

internal/corrosion/client.go

@@ -5,14 +5,15 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
-	"github.com/cenkalti/backoff/v4"
-	"golang.org/x/net/http2"
 	"log/slog"
 	"net"
 	"net/http"
 	"net/netip"
 	"net/url"
 	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	"golang.org/x/net/http2"
 )
 
 const (

internal/corrosion/subscribe.go

@@ -6,11 +6,12 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/cenkalti/backoff/v4"
 	"io"
 	"log/slog"
 	"net/http"
 	"strconv"
+
+	"github.com/cenkalti/backoff/v4"
 )
 
 type ChangeType string

internal/daemon/daemon.go

@@ -3,8 +3,9 @@ package daemon
 import (
 	"context"
 	"fmt"
-	systemd "github.com/coreos/go-systemd/daemon"
 	"log/slog"
+
+	systemd "github.com/coreos/go-systemd/daemon"
 	"github.com/psviderski/uncloud/internal/machine"
 )
 

internal/daemon/token.go

@@ -3,10 +3,11 @@ package daemon
 import (
 	"errors"
 	"fmt"
-	"github.com/psviderski/uncloud/internal/machine"
-	"github.com/psviderski/uncloud/internal/machine/network"
 	"net/netip"
 	"os"
+
+	"github.com/psviderski/uncloud/internal/machine"
+	"github.com/psviderski/uncloud/internal/machine/network"
 )
 
 // MachineToken returns the local machine's token that can be used for adding the machine to a cluster.

internal/docker/client.go

@@ -4,10 +4,11 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"github.com/cenkalti/backoff/v4"
-	"github.com/docker/docker/client"
 	"log/slog"
 	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	"github.com/docker/docker/client"
 )
 
 // WaitDaemonReady waits for the Docker daemon to start and be ready to serve requests.

internal/machine/api/pb/caddy.pb.go

@@ -0,0 +1,176 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.34.2
+// 	protoc        v5.27.3
+// source: internal/machine/api/pb/caddy.proto
+
+package pb
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
+	timestamppb "google.golang.org/protobuf/types/known/timestamppb"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type GetCaddyConfigResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The generated Caddyfile content.
+	Caddyfile string `protobuf:"bytes,1,opt,name=caddyfile,proto3" json:"caddyfile,omitempty"`
+	// Timestamp when the config was last modified.
+	ModifiedAt *timestamppb.Timestamp `protobuf:"bytes,2,opt,name=modified_at,json=modifiedAt,proto3" json:"modified_at,omitempty"`
+}
+
+func (x *GetCaddyConfigResponse) Reset() {
+	*x = GetCaddyConfigResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_caddy_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetCaddyConfigResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetCaddyConfigResponse) ProtoMessage() {}
+
+func (x *GetCaddyConfigResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_caddy_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetCaddyConfigResponse.ProtoReflect.Descriptor instead.
+func (*GetCaddyConfigResponse) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_caddy_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *GetCaddyConfigResponse) GetCaddyfile() string {
+	if x != nil {
+		return x.Caddyfile
+	}
+	return ""
+}
+
+func (x *GetCaddyConfigResponse) GetModifiedAt() *timestamppb.Timestamp {
+	if x != nil {
+		return x.ModifiedAt
+	}
+	return nil
+}
+
+var File_internal_machine_api_pb_caddy_proto protoreflect.FileDescriptor
+
+var file_internal_machine_api_pb_caddy_proto_rawDesc = []byte{
+	0x0a, 0x23, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x2f, 0x6d, 0x61, 0x63, 0x68, 0x69,
+	0x6e, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x70, 0x62, 0x2f, 0x63, 0x61, 0x64, 0x64, 0x79, 0x2e,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x03, 0x61, 0x70, 0x69, 0x1a, 0x1b, 0x67, 0x6f, 0x6f, 0x67,
+	0x6c, 0x65, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x65, 0x6d, 0x70, 0x74,
+	0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1f, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2f,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x74, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61,
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+	0x61, 0x64, 0x64, 0x79, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
+	0x73, 0x65, 0x12, 0x1c, 0x0a, 0x09, 0x63, 0x61, 0x64, 0x64, 0x79, 0x66, 0x69, 0x6c, 0x65, 0x18,
+	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x09, 0x63, 0x61, 0x64, 0x64, 0x79, 0x66, 0x69, 0x6c, 0x65,
+	0x12, 0x3b, 0x0a, 0x0b, 0x6d, 0x6f, 0x64, 0x69, 0x66, 0x69, 0x65, 0x64, 0x5f, 0x61, 0x74, 0x18,
+	0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1a, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x54, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d,
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+	0x66, 0x69, 0x67, 0x12, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x1b, 0x2e, 0x61, 0x70,
+	0x69, 0x2e, 0x47, 0x65, 0x74, 0x43, 0x61, 0x64, 0x64, 0x79, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67,
+	0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x42, 0x37, 0x5a, 0x35, 0x67, 0x69, 0x74, 0x68,
+	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x70, 0x73, 0x76, 0x69, 0x64, 0x65, 0x72, 0x73, 0x6b,
+	0x69, 0x2f, 0x75, 0x6e, 0x63, 0x6c, 0x6f, 0x75, 0x64, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e,
+	0x61, 0x6c, 0x2f, 0x6d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x70,
+	0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_internal_machine_api_pb_caddy_proto_rawDescOnce sync.Once
+	file_internal_machine_api_pb_caddy_proto_rawDescData = file_internal_machine_api_pb_caddy_proto_rawDesc
+)
+
+func file_internal_machine_api_pb_caddy_proto_rawDescGZIP() []byte {
+	file_internal_machine_api_pb_caddy_proto_rawDescOnce.Do(func() {
+		file_internal_machine_api_pb_caddy_proto_rawDescData = protoimpl.X.CompressGZIP(file_internal_machine_api_pb_caddy_proto_rawDescData)
+	})
+	return file_internal_machine_api_pb_caddy_proto_rawDescData
+}
+
+var file_internal_machine_api_pb_caddy_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_internal_machine_api_pb_caddy_proto_goTypes = []any{
+	(*GetCaddyConfigResponse)(nil), // 0: api.GetCaddyConfigResponse
+	(*timestamppb.Timestamp)(nil),  // 1: google.protobuf.Timestamp
+	(*emptypb.Empty)(nil),          // 2: google.protobuf.Empty
+}
+var file_internal_machine_api_pb_caddy_proto_depIdxs = []int32{
+	1, // 0: api.GetCaddyConfigResponse.modified_at:type_name -> google.protobuf.Timestamp
+	2, // 1: api.Caddy.GetConfig:input_type -> google.protobuf.Empty
+	0, // 2: api.Caddy.GetConfig:output_type -> api.GetCaddyConfigResponse
+	2, // [2:3] is the sub-list for method output_type
+	1, // [1:2] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_internal_machine_api_pb_caddy_proto_init() }
+func file_internal_machine_api_pb_caddy_proto_init() {
+	if File_internal_machine_api_pb_caddy_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_internal_machine_api_pb_caddy_proto_msgTypes[0].Exporter = func(v any, i int) any {
+			switch v := v.(*GetCaddyConfigResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_internal_machine_api_pb_caddy_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_internal_machine_api_pb_caddy_proto_goTypes,
+		DependencyIndexes: file_internal_machine_api_pb_caddy_proto_depIdxs,
+		MessageInfos:      file_internal_machine_api_pb_caddy_proto_msgTypes,
+	}.Build()
+	File_internal_machine_api_pb_caddy_proto = out.File
+	file_internal_machine_api_pb_caddy_proto_rawDesc = nil
+	file_internal_machine_api_pb_caddy_proto_goTypes = nil
+	file_internal_machine_api_pb_caddy_proto_depIdxs = nil
+}

internal/machine/api/pb/caddy.proto

@@ -0,0 +1,20 @@
+syntax = "proto3";
+
+package api;
+
+option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";
+
+import "google/protobuf/empty.proto";
+import "google/protobuf/timestamp.proto";
+
+service Caddy {
+  // GetConfig retrieves the current Caddy configuration from the machine.
+  rpc GetConfig(google.protobuf.Empty) returns (GetCaddyConfigResponse);
+}
+
+message GetCaddyConfigResponse {
+  // The generated Caddyfile content.
+  string caddyfile = 1;
+  // Timestamp when the config was last modified.
+  google.protobuf.Timestamp modified_at = 2;
+}

internal/machine/api/pb/caddy_grpc.pb.go

@@ -0,0 +1,124 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             v5.27.3
+// source: internal/machine/api/pb/caddy.proto
+
+package pb
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+	emptypb "google.golang.org/protobuf/types/known/emptypb"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+const (
+	Caddy_GetConfig_FullMethodName = "/api.Caddy/GetConfig"
+)
+
+// CaddyClient is the client API for Caddy service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type CaddyClient interface {
+	// GetConfig retrieves the current Caddy configuration from the machine.
+	GetConfig(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*GetCaddyConfigResponse, error)
+}
+
+type caddyClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewCaddyClient(cc grpc.ClientConnInterface) CaddyClient {
+	return &caddyClient{cc}
+}
+
+func (c *caddyClient) GetConfig(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*GetCaddyConfigResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(GetCaddyConfigResponse)
+	err := c.cc.Invoke(ctx, Caddy_GetConfig_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// CaddyServer is the server API for Caddy service.
+// All implementations must embed UnimplementedCaddyServer
+// for forward compatibility.
+type CaddyServer interface {
+	// GetConfig retrieves the current Caddy configuration from the machine.
+	GetConfig(context.Context, *emptypb.Empty) (*GetCaddyConfigResponse, error)
+	mustEmbedUnimplementedCaddyServer()
+}
+
+// UnimplementedCaddyServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedCaddyServer struct{}
+
+func (UnimplementedCaddyServer) GetConfig(context.Context, *emptypb.Empty) (*GetCaddyConfigResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetConfig not implemented")
+}
+func (UnimplementedCaddyServer) mustEmbedUnimplementedCaddyServer() {}
+func (UnimplementedCaddyServer) testEmbeddedByValue()               {}
+
+// UnsafeCaddyServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to CaddyServer will
+// result in compilation errors.
+type UnsafeCaddyServer interface {
+	mustEmbedUnimplementedCaddyServer()
+}
+
+func RegisterCaddyServer(s grpc.ServiceRegistrar, srv CaddyServer) {
+	// If the following call pancis, it indicates UnimplementedCaddyServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
+	s.RegisterService(&Caddy_ServiceDesc, srv)
+}
+
+func _Caddy_GetConfig_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(emptypb.Empty)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(CaddyServer).GetConfig(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Caddy_GetConfig_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(CaddyServer).GetConfig(ctx, req.(*emptypb.Empty))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// Caddy_ServiceDesc is the grpc.ServiceDesc for Caddy service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var Caddy_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "api.Caddy",
+	HandlerType: (*CaddyServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "GetConfig",
+			Handler:    _Caddy_GetConfig_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "internal/machine/api/pb/caddy.proto",
+}

internal/machine/api/pb/cluster.pb.go

@@ -124,7 +124,7 @@ func (x DNSRecord_RecordType) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use DNSRecord_RecordType.Descriptor instead.
 func (DNSRecord_RecordType) EnumDescriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{8, 0}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{11, 0}
 }
 
 type AddMachineRequest struct {
@@ -339,6 +339,173 @@ func (x *ListMachinesResponse) GetMachines() []*MachineMember {
 	return nil
 }
 
+type UpdateMachineRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Machine to update
+	MachineId string `protobuf:"bytes,1,opt,name=machine_id,json=machineId,proto3" json:"machine_id,omitempty"`
+	// Updated machine information
+	Name      *string   `protobuf:"bytes,2,opt,name=name,proto3,oneof" json:"name,omitempty"`
+	PublicIp  *IP       `protobuf:"bytes,3,opt,name=public_ip,json=publicIp,proto3,oneof" json:"public_ip,omitempty"`
+	Endpoints []*IPPort `protobuf:"bytes,4,rep,name=endpoints,proto3" json:"endpoints,omitempty"`
+}
+
+func (x *UpdateMachineRequest) Reset() {
+	*x = UpdateMachineRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[4]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *UpdateMachineRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*UpdateMachineRequest) ProtoMessage() {}
+
+func (x *UpdateMachineRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[4]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use UpdateMachineRequest.ProtoReflect.Descriptor instead.
+func (*UpdateMachineRequest) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{4}
+}
+
+func (x *UpdateMachineRequest) GetMachineId() string {
+	if x != nil {
+		return x.MachineId
+	}
+	return ""
+}
+
+func (x *UpdateMachineRequest) GetName() string {
+	if x != nil && x.Name != nil {
+		return *x.Name
+	}
+	return ""
+}
+
+func (x *UpdateMachineRequest) GetPublicIp() *IP {
+	if x != nil {
+		return x.PublicIp
+	}
+	return nil
+}
+
+func (x *UpdateMachineRequest) GetEndpoints() []*IPPort {
+	if x != nil {
+		return x.Endpoints
+	}
+	return nil
+}
+
+type UpdateMachineResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Machine *MachineInfo `protobuf:"bytes,1,opt,name=machine,proto3" json:"machine,omitempty"`
+}
+
+func (x *UpdateMachineResponse) Reset() {
+	*x = UpdateMachineResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *UpdateMachineResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*UpdateMachineResponse) ProtoMessage() {}
+
+func (x *UpdateMachineResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use UpdateMachineResponse.ProtoReflect.Descriptor instead.
+func (*UpdateMachineResponse) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *UpdateMachineResponse) GetMachine() *MachineInfo {
+	if x != nil {
+		return x.Machine
+	}
+	return nil
+}
+
+type RemoveMachineRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+}
+
+func (x *RemoveMachineRequest) Reset() {
+	*x = RemoveMachineRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RemoveMachineRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RemoveMachineRequest) ProtoMessage() {}
+
+func (x *RemoveMachineRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RemoveMachineRequest.ProtoReflect.Descriptor instead.
+func (*RemoveMachineRequest) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *RemoveMachineRequest) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
 type Domain struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -350,7 +517,7 @@ type Domain struct {
 func (x *Domain) Reset() {
 	*x = Domain{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[4]
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -363,7 +530,7 @@ func (x *Domain) String() string {
 func (*Domain) ProtoMessage() {}
 
 func (x *Domain) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[4]
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -376,7 +543,7 @@ func (x *Domain) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Domain.ProtoReflect.Descriptor instead.
 func (*Domain) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{4}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *Domain) GetName() string {
@@ -397,7 +564,7 @@ type ReserveDomainRequest struct {
 func (x *ReserveDomainRequest) Reset() {
 	*x = ReserveDomainRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -410,7 +577,7 @@ func (x *ReserveDomainRequest) String() string {
 func (*ReserveDomainRequest) ProtoMessage() {}
 
 func (x *ReserveDomainRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -423,7 +590,7 @@ func (x *ReserveDomainRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ReserveDomainRequest.ProtoReflect.Descriptor instead.
 func (*ReserveDomainRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{5}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *ReserveDomainRequest) GetEndpoint() string {
@@ -444,7 +611,7 @@ type CreateDomainRecordsRequest struct {
 func (x *CreateDomainRecordsRequest) Reset() {
 	*x = CreateDomainRecordsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -457,7 +624,7 @@ func (x *CreateDomainRecordsRequest) String() string {
 func (*CreateDomainRecordsRequest) ProtoMessage() {}
 
 func (x *CreateDomainRecordsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -470,7 +637,7 @@ func (x *CreateDomainRecordsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateDomainRecordsRequest.ProtoReflect.Descriptor instead.
 func (*CreateDomainRecordsRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{6}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *CreateDomainRecordsRequest) GetRecords() []*DNSRecord {
@@ -491,7 +658,7 @@ type CreateDomainRecordsResponse struct {
 func (x *CreateDomainRecordsResponse) Reset() {
 	*x = CreateDomainRecordsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[7]
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -504,7 +671,7 @@ func (x *CreateDomainRecordsResponse) String() string {
 func (*CreateDomainRecordsResponse) ProtoMessage() {}
 
 func (x *CreateDomainRecordsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[7]
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -517,7 +684,7 @@ func (x *CreateDomainRecordsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateDomainRecordsResponse.ProtoReflect.Descriptor instead.
 func (*CreateDomainRecordsResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{7}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *CreateDomainRecordsResponse) GetRecords() []*DNSRecord {
@@ -540,7 +707,7 @@ type DNSRecord struct {
 func (x *DNSRecord) Reset() {
 	*x = DNSRecord{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[8]
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -553,7 +720,7 @@ func (x *DNSRecord) String() string {
 func (*DNSRecord) ProtoMessage() {}
 
 func (x *DNSRecord) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[8]
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -566,7 +733,7 @@ func (x *DNSRecord) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DNSRecord.ProtoReflect.Descriptor instead.
 func (*DNSRecord) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{8}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *DNSRecord) GetName() string {
@@ -630,59 +797,87 @@ var file_internal_machine_api_pb_cluster_proto_rawDesc = []byte{
 	0x6f, 0x6e, 0x73, 0x65, 0x12, 0x2e, 0x0a, 0x08, 0x6d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x73,
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+	0x69, 0x6e, 0x65, 0x73, 0x22, 0xbb, 0x01, 0x0a, 0x14, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x4d,
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 }
 
 var (
@@ -698,7 +893,7 @@ func file_internal_machine_api_pb_cluster_proto_rawDescGZIP() []byte {
 }
 
 var file_internal_machine_api_pb_cluster_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_internal_machine_api_pb_cluster_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
+var file_internal_machine_api_pb_cluster_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
 var file_internal_machine_api_pb_cluster_proto_goTypes = []any{
 	(MachineMember_MembershipState)(0),  // 0: api.MachineMember.MembershipState
 	(DNSRecord_RecordType)(0),           // 1: api.DNSRecord.RecordType
@@ -706,43 +901,54 @@ var file_internal_machine_api_pb_cluster_proto_goTypes = []any{
 	(*AddMachineResponse)(nil),          // 3: api.AddMachineResponse
 	(*MachineMember)(nil),               // 4: api.MachineMember
 	(*ListMachinesResponse)(nil),        // 5: api.ListMachinesResponse
-	(*Domain)(nil),                      // 6: api.Domain
+	(*UpdateMachineRequest)(nil),        // 6: api.UpdateMachineRequest
-	(*ReserveDomainRequest)(nil),        // 7: api.ReserveDomainRequest
+	(*UpdateMachineResponse)(nil),       // 7: api.UpdateMachineResponse
-	(*CreateDomainRecordsRequest)(nil),  // 8: api.CreateDomainRecordsRequest
+	(*RemoveMachineRequest)(nil),        // 8: api.RemoveMachineRequest
-	(*CreateDomainRecordsResponse)(nil), // 9: api.CreateDomainRecordsResponse
+	(*Domain)(nil),                      // 9: api.Domain
-	(*DNSRecord)(nil),                   // 10: api.DNSRecord
+	(*ReserveDomainRequest)(nil),        // 10: api.ReserveDomainRequest
-	(*NetworkConfig)(nil),               // 11: api.NetworkConfig
+	(*CreateDomainRecordsRequest)(nil),  // 11: api.CreateDomainRecordsRequest
-	(*IP)(nil),                          // 12: api.IP
+	(*CreateDomainRecordsResponse)(nil), // 12: api.CreateDomainRecordsResponse
-	(*MachineInfo)(nil),                 // 13: api.MachineInfo
+	(*DNSRecord)(nil),                   // 13: api.DNSRecord
-	(*emptypb.Empty)(nil),               // 14: google.protobuf.Empty
+	(*NetworkConfig)(nil),               // 14: api.NetworkConfig
+	(*IP)(nil),                          // 15: api.IP
+	(*MachineInfo)(nil),                 // 16: api.MachineInfo
+	(*IPPort)(nil),                      // 17: api.IPPort
+	(*emptypb.Empty)(nil),               // 18: google.protobuf.Empty
 }
 var file_internal_machine_api_pb_cluster_proto_depIdxs = []int32{
-	11, // 0: api.AddMachineRequest.network:type_name -> api.NetworkConfig
+	14, // 0: api.AddMachineRequest.network:type_name -> api.NetworkConfig
-	12, // 1: api.AddMachineRequest.public_ip:type_name -> api.IP
+	15, // 1: api.AddMachineRequest.public_ip:type_name -> api.IP
-	13, // 2: api.AddMachineResponse.machine:type_name -> api.MachineInfo
+	16, // 2: api.AddMachineResponse.machine:type_name -> api.MachineInfo
-	13, // 3: api.MachineMember.machine:type_name -> api.MachineInfo
+	16, // 3: api.MachineMember.machine:type_name -> api.MachineInfo
 	0,  // 4: api.MachineMember.state:type_name -> api.MachineMember.MembershipState
 	4,  // 5: api.ListMachinesResponse.machines:type_name -> api.MachineMember
-	10, // 6: api.CreateDomainRecordsRequest.records:type_name -> api.DNSRecord
+	15, // 6: api.UpdateMachineRequest.public_ip:type_name -> api.IP
-	10, // 7: api.CreateDomainRecordsResponse.records:type_name -> api.DNSRecord
+	17, // 7: api.UpdateMachineRequest.endpoints:type_name -> api.IPPort
-	1,  // 8: api.DNSRecord.type:type_name -> api.DNSRecord.RecordType
+	16, // 8: api.UpdateMachineResponse.machine:type_name -> api.MachineInfo
-	2,  // 9: api.Cluster.AddMachine:input_type -> api.AddMachineRequest
+	13, // 9: api.CreateDomainRecordsRequest.records:type_name -> api.DNSRecord
-	14, // 10: api.Cluster.ListMachines:input_type -> google.protobuf.Empty
+	13, // 10: api.CreateDomainRecordsResponse.records:type_name -> api.DNSRecord
-	7,  // 11: api.Cluster.ReserveDomain:input_type -> api.ReserveDomainRequest
+	1,  // 11: api.DNSRecord.type:type_name -> api.DNSRecord.RecordType
-	14, // 12: api.Cluster.GetDomain:input_type -> google.protobuf.Empty
+	2,  // 12: api.Cluster.AddMachine:input_type -> api.AddMachineRequest
-	14, // 13: api.Cluster.ReleaseDomain:input_type -> google.protobuf.Empty
+	18, // 13: api.Cluster.ListMachines:input_type -> google.protobuf.Empty
-	8,  // 14: api.Cluster.CreateDomainRecords:input_type -> api.CreateDomainRecordsRequest
+	6,  // 14: api.Cluster.UpdateMachine:input_type -> api.UpdateMachineRequest
-	3,  // 15: api.Cluster.AddMachine:output_type -> api.AddMachineResponse
+	8,  // 15: api.Cluster.RemoveMachine:input_type -> api.RemoveMachineRequest
-	5,  // 16: api.Cluster.ListMachines:output_type -> api.ListMachinesResponse
+	10, // 16: api.Cluster.ReserveDomain:input_type -> api.ReserveDomainRequest
-	6,  // 17: api.Cluster.ReserveDomain:output_type -> api.Domain
+	18, // 17: api.Cluster.GetDomain:input_type -> google.protobuf.Empty
-	6,  // 18: api.Cluster.GetDomain:output_type -> api.Domain
+	18, // 18: api.Cluster.ReleaseDomain:input_type -> google.protobuf.Empty
-	6,  // 19: api.Cluster.ReleaseDomain:output_type -> api.Domain
+	11, // 19: api.Cluster.CreateDomainRecords:input_type -> api.CreateDomainRecordsRequest
-	9,  // 20: api.Cluster.CreateDomainRecords:output_type -> api.CreateDomainRecordsResponse
+	3,  // 20: api.Cluster.AddMachine:output_type -> api.AddMachineResponse
-	15, // [15:21] is the sub-list for method output_type
+	5,  // 21: api.Cluster.ListMachines:output_type -> api.ListMachinesResponse
-	9,  // [9:15] is the sub-list for method input_type
+	7,  // 22: api.Cluster.UpdateMachine:output_type -> api.UpdateMachineResponse
-	9,  // [9:9] is the sub-list for extension type_name
+	18, // 23: api.Cluster.RemoveMachine:output_type -> google.protobuf.Empty
-	9,  // [9:9] is the sub-list for extension extendee
+	9,  // 24: api.Cluster.ReserveDomain:output_type -> api.Domain
-	0,  // [0:9] is the sub-list for field type_name
+	9,  // 25: api.Cluster.GetDomain:output_type -> api.Domain
+	9,  // 26: api.Cluster.ReleaseDomain:output_type -> api.Domain
+	12, // 27: api.Cluster.CreateDomainRecords:output_type -> api.CreateDomainRecordsResponse
+	20, // [20:28] is the sub-list for method output_type
+	12, // [12:20] is the sub-list for method input_type
+	12, // [12:12] is the sub-list for extension type_name
+	12, // [12:12] is the sub-list for extension extendee
+	0,  // [0:12] is the sub-list for field type_name
 }
 
 func init() { file_internal_machine_api_pb_cluster_proto_init() }
@@ -802,7 +1008,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_cluster_proto_msgTypes[4].Exporter = func(v any, i int) any {
-			switch v := v.(*Domain); i {
+			switch v := v.(*UpdateMachineRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -814,7 +1020,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_cluster_proto_msgTypes[5].Exporter = func(v any, i int) any {
-			switch v := v.(*ReserveDomainRequest); i {
+			switch v := v.(*UpdateMachineResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -826,7 +1032,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_cluster_proto_msgTypes[6].Exporter = func(v any, i int) any {
-			switch v := v.(*CreateDomainRecordsRequest); i {
+			switch v := v.(*RemoveMachineRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -838,7 +1044,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_cluster_proto_msgTypes[7].Exporter = func(v any, i int) any {
-			switch v := v.(*CreateDomainRecordsResponse); i {
+			switch v := v.(*Domain); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -850,6 +1056,42 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_cluster_proto_msgTypes[8].Exporter = func(v any, i int) any {
+			switch v := v.(*ReserveDomainRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_cluster_proto_msgTypes[9].Exporter = func(v any, i int) any {
+			switch v := v.(*CreateDomainRecordsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_cluster_proto_msgTypes[10].Exporter = func(v any, i int) any {
+			switch v := v.(*CreateDomainRecordsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_cluster_proto_msgTypes[11].Exporter = func(v any, i int) any {
 			switch v := v.(*DNSRecord); i {
 			case 0:
 				return &v.state
@@ -862,13 +1104,14 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			}
 		}
 	}
+	file_internal_machine_api_pb_cluster_proto_msgTypes[4].OneofWrappers = []any{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_internal_machine_api_pb_cluster_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   9,
+			NumMessages:   12,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

internal/machine/api/pb/cluster.proto

@@ -11,6 +11,8 @@ import "internal/machine/api/pb/machine.proto";
 service Cluster {
   rpc AddMachine(AddMachineRequest) returns (AddMachineResponse);
   rpc ListMachines(google.protobuf.Empty) returns (ListMachinesResponse);
+  rpc UpdateMachine(UpdateMachineRequest) returns (UpdateMachineResponse);
+  rpc RemoveMachine(RemoveMachineRequest) returns (google.protobuf.Empty);
 
   rpc ReserveDomain(ReserveDomainRequest) returns (Domain);
   rpc GetDomain(google.protobuf.Empty) returns (Domain);
@@ -49,6 +51,24 @@ message ListMachinesResponse {
   repeated MachineMember machines = 1;
 }
 
+message UpdateMachineRequest {
+  // Machine to update
+  string machine_id = 1;
+
+  // Updated machine information
+  optional string name = 2;
+  optional IP public_ip = 3;
+  repeated IPPort endpoints = 4;
+}
+
+message UpdateMachineResponse {
+  MachineInfo machine = 1;
+}
+
+message RemoveMachineRequest {
+  string id = 1;
+}
+
 message Domain {
   string name = 1;
 }

internal/machine/api/pb/cluster_grpc.pb.go

@@ -22,6 +22,8 @@ const _ = grpc.SupportPackageIsVersion9
 const (
 	Cluster_AddMachine_FullMethodName          = "/api.Cluster/AddMachine"
 	Cluster_ListMachines_FullMethodName        = "/api.Cluster/ListMachines"
+	Cluster_UpdateMachine_FullMethodName       = "/api.Cluster/UpdateMachine"
+	Cluster_RemoveMachine_FullMethodName       = "/api.Cluster/RemoveMachine"
 	Cluster_ReserveDomain_FullMethodName       = "/api.Cluster/ReserveDomain"
 	Cluster_GetDomain_FullMethodName           = "/api.Cluster/GetDomain"
 	Cluster_ReleaseDomain_FullMethodName       = "/api.Cluster/ReleaseDomain"
@@ -34,6 +36,8 @@ const (
 type ClusterClient interface {
 	AddMachine(ctx context.Context, in *AddMachineRequest, opts ...grpc.CallOption) (*AddMachineResponse, error)
 	ListMachines(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListMachinesResponse, error)
+	UpdateMachine(ctx context.Context, in *UpdateMachineRequest, opts ...grpc.CallOption) (*UpdateMachineResponse, error)
+	RemoveMachine(ctx context.Context, in *RemoveMachineRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	ReserveDomain(ctx context.Context, in *ReserveDomainRequest, opts ...grpc.CallOption) (*Domain, error)
 	GetDomain(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*Domain, error)
 	ReleaseDomain(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*Domain, error)
@@ -68,6 +72,26 @@ func (c *clusterClient) ListMachines(ctx context.Context, in *emptypb.Empty, opt
 	return out, nil
 }
 
+func (c *clusterClient) UpdateMachine(ctx context.Context, in *UpdateMachineRequest, opts ...grpc.CallOption) (*UpdateMachineResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(UpdateMachineResponse)
+	err := c.cc.Invoke(ctx, Cluster_UpdateMachine_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *clusterClient) RemoveMachine(ctx context.Context, in *RemoveMachineRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, Cluster_RemoveMachine_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *clusterClient) ReserveDomain(ctx context.Context, in *ReserveDomainRequest, opts ...grpc.CallOption) (*Domain, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(Domain)
@@ -114,6 +138,8 @@ func (c *clusterClient) CreateDomainRecords(ctx context.Context, in *CreateDomai
 type ClusterServer interface {
 	AddMachine(context.Context, *AddMachineRequest) (*AddMachineResponse, error)
 	ListMachines(context.Context, *emptypb.Empty) (*ListMachinesResponse, error)
+	UpdateMachine(context.Context, *UpdateMachineRequest) (*UpdateMachineResponse, error)
+	RemoveMachine(context.Context, *RemoveMachineRequest) (*emptypb.Empty, error)
 	ReserveDomain(context.Context, *ReserveDomainRequest) (*Domain, error)
 	GetDomain(context.Context, *emptypb.Empty) (*Domain, error)
 	ReleaseDomain(context.Context, *emptypb.Empty) (*Domain, error)
@@ -134,6 +160,12 @@ func (UnimplementedClusterServer) AddMachine(context.Context, *AddMachineRequest
 func (UnimplementedClusterServer) ListMachines(context.Context, *emptypb.Empty) (*ListMachinesResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListMachines not implemented")
 }
+func (UnimplementedClusterServer) UpdateMachine(context.Context, *UpdateMachineRequest) (*UpdateMachineResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method UpdateMachine not implemented")
+}
+func (UnimplementedClusterServer) RemoveMachine(context.Context, *RemoveMachineRequest) (*emptypb.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method RemoveMachine not implemented")
+}
 func (UnimplementedClusterServer) ReserveDomain(context.Context, *ReserveDomainRequest) (*Domain, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ReserveDomain not implemented")
 }
@@ -203,6 +235,42 @@ func _Cluster_ListMachines_Handler(srv interface{}, ctx context.Context, dec fun
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Cluster_UpdateMachine_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(UpdateMachineRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ClusterServer).UpdateMachine(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Cluster_UpdateMachine_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ClusterServer).UpdateMachine(ctx, req.(*UpdateMachineRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Cluster_RemoveMachine_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RemoveMachineRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ClusterServer).RemoveMachine(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Cluster_RemoveMachine_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ClusterServer).RemoveMachine(ctx, req.(*RemoveMachineRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Cluster_ReserveDomain_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(ReserveDomainRequest)
 	if err := dec(in); err != nil {
@@ -290,6 +358,14 @@ var Cluster_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "ListMachines",
 			Handler:    _Cluster_ListMachines_Handler,
 		},
+		{
+			MethodName: "UpdateMachine",
+			Handler:    _Cluster_UpdateMachine_Handler,
+		},
+		{
+			MethodName: "RemoveMachine",
+			Handler:    _Cluster_RemoveMachine_Handler,
+		},
 		{
 			MethodName: "ReserveDomain",
 			Handler:    _Cluster_ReserveDomain_Handler,

internal/machine/api/pb/machine.proto

@@ -14,7 +14,7 @@ service Machine {
   rpc JoinCluster(JoinClusterRequest) returns (google.protobuf.Empty);
   rpc Token(google.protobuf.Empty) returns (TokenResponse);
   rpc Inspect(google.protobuf.Empty) returns (MachineInfo);
-  // Reset restores the machine to a clean state, removing all cluster-related сonfiguration and data.
+  // Reset restores the machine to a clean state, removing all cluster-related configuration and data.
   rpc Reset(ResetRequest) returns (google.protobuf.Empty);
 
   rpc InspectService(InspectServiceRequest) returns (InspectServiceResponse);

internal/machine/api/pb/machine_grpc.pb.go

@@ -39,7 +39,7 @@ type MachineClient interface {
 	JoinCluster(ctx context.Context, in *JoinClusterRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	Token(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*TokenResponse, error)
 	Inspect(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*MachineInfo, error)
-	// Reset restores the machine to a clean state, removing all cluster-related сonfiguration and data.
+	// Reset restores the machine to a clean state, removing all cluster-related configuration and data.
 	Reset(ctx context.Context, in *ResetRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	InspectService(ctx context.Context, in *InspectServiceRequest, opts ...grpc.CallOption) (*InspectServiceResponse, error)
 }
@@ -132,7 +132,7 @@ type MachineServer interface {
 	JoinCluster(context.Context, *JoinClusterRequest) (*emptypb.Empty, error)
 	Token(context.Context, *emptypb.Empty) (*TokenResponse, error)
 	Inspect(context.Context, *emptypb.Empty) (*MachineInfo, error)
-	// Reset restores the machine to a clean state, removing all cluster-related сonfiguration and data.
+	// Reset restores the machine to a clean state, removing all cluster-related configuration and data.
 	Reset(context.Context, *ResetRequest) (*emptypb.Empty, error)
 	InspectService(context.Context, *InspectServiceRequest) (*InspectServiceResponse, error)
 	mustEmbedUnimplementedMachineServer()

internal/machine/api/proxy/backend.go

@@ -2,10 +2,11 @@ package proxy
 
 import (
 	"fmt"
+
+	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/encoding/protowire"
 	"google.golang.org/protobuf/proto"
-	"github.com/psviderski/uncloud/internal/machine/api/pb"
 )
 
 // One2ManyResponder converts upstream responses into messages from upstreams, so that multiple

internal/machine/api/proxy/director.go

@@ -2,11 +2,12 @@ package proxy
 
 import (
 	"context"
+	"sync"
+
 	"github.com/siderolabs/grpc-proxy/proxy"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/metadata"
 	"google.golang.org/grpc/status"
-	"sync"
 )
 
 // Director manages routing of gRPC requests between local and remote backends.

internal/machine/api/proxy/local.go

@@ -2,11 +2,12 @@ package proxy
 
 import (
 	"context"
+	"sync"
+
 	"github.com/siderolabs/grpc-proxy/proxy"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/metadata"
-	"sync"
 )
 
 // LocalBackend is a proxy.One2ManyResponder implementation that proxies to a local gRPC server listening on a Unix socket.

internal/machine/api/proxy/remote.go

@@ -3,14 +3,15 @@ package proxy
 import (
 	"context"
 	"fmt"
+	"net/netip"
+	"sync"
+	"time"
+
 	"github.com/siderolabs/grpc-proxy/proxy"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/backoff"
 	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/metadata"
-	"net/netip"
-	"sync"
-	"time"
 )
 
 // RemoteBackend is a proxy.One2ManyResponder implementation that proxies to a remote gRPC server, injecting machine metadata

internal/machine/caddyconfig/caddyfile.go

@@ -0,0 +1,331 @@
+package caddyconfig
+
+import (
+	"bytes"
+	"cmp"
+	"context"
+	"fmt"
+	"log/slog"
+	"maps"
+	"net"
+	"slices"
+	"strconv"
+	"strings"
+	"text/template"
+
+	"github.com/psviderski/uncloud/internal/machine/store"
+	"github.com/psviderski/uncloud/pkg/api"
+)
+
+const (
+	caddyfileHeader = `# This file is autogenerated by Uncloud based on the configuration of running services.
+# Do not edit manually. Any manual changes will be overwritten on the next update.
+`
+	caddyfileTemplate = `# Health check endpoint to verify Caddy reachability on this machine.
+http:// {
+	handle {{.VerifyPath}} {
+		respond "{{.VerifyResponse}}" 200
+	}
+	log
+}
+
+(common_proxy) {
+	# Retry failed requests up to lb_retries times against other available upstreams.
+	lb_retries 3
+	# Upstreams are marked unhealthy for fail_duration after a failed request (passive health checking).
+	fail_duration 30s
+}
+{{- if or .HTTPHostUpstreams .HTTPSHostUpstreams }}
+
+# Sites generated from service ports.{{end}}
+{{- range $hostname, $upstreams := .HTTPHostUpstreams}}
+
+http://{{$hostname}} {
+	reverse_proxy {{join $upstreams " "}} {
+		import common_proxy
+	}
+	log
+}{{end}}
+{{- range $hostname, $upstreams := .HTTPSHostUpstreams}}
+
+https://{{$hostname}} {
+	reverse_proxy {{join $upstreams " "}} {
+		import common_proxy
+	}
+	log
+}{{end}}
+`
+)
+
+// CaddyfileGenerator generates a Caddyfile configuration for the Caddy reverse proxy.
+type CaddyfileGenerator struct {
+	// machineID is the unique identifier of the machine where the controller is running.
+	machineID string
+	validator CaddyfileValidator
+	log       *slog.Logger
+}
+
+// CaddyfileValidator is an interface for validating Caddyfile configurations.
+type CaddyfileValidator interface {
+	Validate(ctx context.Context, caddyfile string) error
+}
+
+func NewCaddyfileGenerator(machineID string, validator CaddyfileValidator, log *slog.Logger) *CaddyfileGenerator {
+	if log == nil {
+		log = slog.Default()
+	}
+	return &CaddyfileGenerator{
+		machineID: machineID,
+		validator: validator,
+		log:       log,
+	}
+}
+
+// Generate creates a Caddyfile configuration based on the provided service containers.
+// The Caddyfile is generated from the service ports of the healthy containers.
+// If a 'caddy' service container is running on this machine and defines a custom Caddy config (x-caddy) in its service
+// spec, it will be validated and prepended to the generated Caddyfile. Custom Caddy configs (x-caddy) defined in other
+// service specs are validated and appended to the generated Caddyfile. Invalid configs are logged and skipped to ensure
+// the generated Caddyfile remains valid.
+//
+// The final Caddyfile structure includes:
+//
+//	[caddy x-caddy (global config)]
+//	[generated Caddyfile from all service ports]
+//	[service-a x-caddy]
+//	...
+//	[service-z x-caddy]
+func (g *CaddyfileGenerator) Generate(ctx context.Context, records []store.ContainerRecord) (string, error) {
+	containers := make([]api.ServiceContainer, len(records))
+	for i, cr := range records {
+		containers[i] = cr.Container
+	}
+	// Sort containers by service name and creation time to generate a stable Caddyfile.
+	slices.SortStableFunc(containers, func(a, b api.ServiceContainer) int {
+		return cmp.Or(
+			strings.Compare(a.ServiceName(), b.ServiceName()),
+			a.CreatedTime().Compare(b.CreatedTime()),
+		)
+	})
+
+	caddyfile, err := g.generateBaseFromPorts(containers)
+	if err != nil {
+		return "", fmt.Errorf("generate base Caddyfile from service ports: %w", err)
+	}
+
+	upstreams := serviceUpstreams(containers)
+	// Track validation errors for reporting.
+	var configErrors []string
+
+	// Find the 'caddy' service container on this machine. Use the most recent one if multiple exist.
+	var caddyCtr *api.ServiceContainer
+	for _, cr := range records {
+		if cr.MachineID == g.machineID && cr.Container.ServiceName() == CaddyServiceName &&
+			(caddyCtr == nil || cr.Container.CreatedTime().Compare(caddyCtr.CreatedTime()) > 0) {
+			caddyCtr = &cr.Container
+		}
+	}
+
+	// If the caddy container is running on this machine and has a custom Caddy config (global),
+	// prepend it to the generated Caddyfile and validate it.
+	if caddyCtr != nil && caddyCtr.ServiceSpec.CaddyConfig() != "" {
+		// Render the custom global Caddy config as a Go template with the upstreams.
+		tmplCtx := templateContext{
+			Name:      caddyCtr.ServiceName(),
+			Upstreams: upstreams,
+		}
+		renderedConfig, err := renderCaddyfile(tmplCtx, caddyCtr.ServiceSpec.CaddyConfig())
+		if err != nil {
+			g.log.Error("Failed to render template directives in user-defined global Caddy config, skipping it.",
+				"service", caddyCtr.ServiceName(), "container", caddyCtr.ID, "err", err)
+			configErrors = append(configErrors,
+				fmt.Sprintf("service '%s': failed to render template: %v", caddyCtr.ServiceName(), err))
+		} else {
+			caddyfileCandidate := fmt.Sprintf("# User-defined global config from service '%s'.\n%s\n\n%s",
+				caddyCtr.ServiceName(), renderedConfig, caddyfile)
+
+			if err = g.validator.Validate(ctx, caddyfileCandidate); err != nil {
+				g.log.Error("User-defined global Caddy config is invalid, skipping it.",
+					"service", caddyCtr.ServiceName(), "container", caddyCtr.ID, "err", err)
+				configErrors = append(configErrors,
+					fmt.Sprintf("service '%s': validation failed: %v", caddyCtr.ServiceName(), err))
+			} else {
+				caddyfile = caddyfileCandidate
+			}
+		}
+	}
+
+	// There could be multiple service containers for the same service with different custom Caddy configs, for example,
+	// if the service has been partially updated. The most recent container for each service defines the current custom
+	// Caddy config for that service.
+	latestServiceContainers := make(map[string]api.ServiceContainer, len(containers))
+	for _, ctr := range containers {
+		if latest, ok := latestServiceContainers[ctr.ServiceName()]; ok {
+			if ctr.CreatedTime().Compare(latest.CreatedTime()) > 0 {
+				latestServiceContainers[ctr.ServiceName()] = ctr
+			}
+		} else {
+			latestServiceContainers[ctr.ServiceName()] = ctr
+		}
+	}
+	sortedServiceNames := slices.Sorted(maps.Keys(latestServiceContainers))
+
+	// Append a custom Caddy config for each service to the Caddyfile and validate it. If the config for a service
+	// is invalid, skip it but continue processing other services to ensure the Caddyfile remains valid.
+	for _, serviceName := range sortedServiceNames {
+		// Skip the caddy container as we already processed it.
+		if serviceName == CaddyServiceName {
+			continue
+		}
+
+		ctr := latestServiceContainers[serviceName]
+		if ctr.ServiceSpec.CaddyConfig() == "" {
+			continue
+		}
+
+		// Render the template actions in the service's Caddy config.
+		tmplCtx := templateContext{
+			Name:      serviceName,
+			Upstreams: upstreams,
+		}
+		renderedConfig, err := renderCaddyfile(tmplCtx, ctr.ServiceSpec.CaddyConfig())
+		if err != nil {
+			g.log.Error("Failed to render template directives in user-defined Caddy config for service, skipping it.",
+				"service", serviceName, "err", err)
+			configErrors = append(configErrors,
+				fmt.Sprintf("service '%s': failed to render template: %v", serviceName, err))
+			continue
+		}
+
+		caddyfileCandidate := fmt.Sprintf("%s\n# User-defined config for service '%s'.\n%s\n",
+			caddyfile, serviceName, renderedConfig)
+		if err = g.validator.Validate(ctx, caddyfileCandidate); err != nil {
+			g.log.Error("User-defined Caddy config for service is invalid, skipping it.",
+				"service", serviceName, "err", err)
+			configErrors = append(configErrors, fmt.Sprintf("service '%s': validation failed: %v", serviceName, err))
+		} else {
+			caddyfile = caddyfileCandidate
+		}
+	}
+
+	// Append error summary as comment if there were any invalid configs.
+	if len(configErrors) > 0 {
+		errorsComment := "# Skipped invalid user-defined configs:\n"
+		for _, e := range configErrors {
+			errorsComment += fmt.Sprintf("# - %s\n", e)
+		}
+
+		caddyfile += "\n" + errorsComment
+	}
+
+	return caddyfileHeader + "\n" + caddyfile, nil
+}
+
+func (g *CaddyfileGenerator) generateBaseFromPorts(containers []api.ServiceContainer) (string, error) {
+	httpHostUpstreams, httpsHostUpstreams := httpUpstreamsFromPorts(containers)
+
+	funcs := template.FuncMap{"join": strings.Join}
+	tmpl, err := template.New("Caddyfile").Funcs(funcs).Parse(caddyfileTemplate)
+	if err != nil {
+		return "", fmt.Errorf("parse Caddyfile template: %w", err)
+	}
+
+	data := struct {
+		VerifyPath         string
+		VerifyResponse     string
+		HTTPHostUpstreams  map[string][]string
+		HTTPSHostUpstreams map[string][]string
+	}{
+		VerifyPath:         VerifyPath,
+		VerifyResponse:     g.machineID,
+		HTTPHostUpstreams:  httpHostUpstreams,
+		HTTPSHostUpstreams: httpsHostUpstreams,
+	}
+
+	var buf bytes.Buffer
+	if err = tmpl.Execute(&buf, data); err != nil {
+		return "", fmt.Errorf("execute Caddyfile template: %w", err)
+	}
+
+	return buf.String(), nil
+}
+
+// httpUpstreamsFromPorts extracts upstreams for HTTP and HTTPS protocols from the published ports of the provided
+// service containers. It's expected that all containers are healthy.
+func httpUpstreamsFromPorts(containers []api.ServiceContainer) (map[string][]string, map[string][]string) {
+	// Maps hostnames to lists of upstreams (container IP:port pairs).
+	httpHostUpstreams := make(map[string][]string)
+	httpsHostUpstreams := make(map[string][]string)
+	for _, ctr := range containers {
+		ip := ctr.UncloudNetworkIP()
+		if !ip.IsValid() {
+			// Container is not connected to the uncloud Docker network (could be host network).
+			continue
+		}
+		log := slog.With("container", ctr.ID)
+
+		ports, err := ctr.ServicePorts()
+		if err != nil {
+			log.Error("Failed to parse service ports for container.", "err", err)
+			continue
+		}
+
+		for _, port := range ports {
+			if port.Mode != api.PortModeIngress {
+				continue
+			}
+
+			switch port.Protocol {
+			case api.ProtocolHTTP:
+				upstream := net.JoinHostPort(ip.String(), strconv.Itoa(int(port.ContainerPort)))
+				httpHostUpstreams[port.Hostname] = append(httpHostUpstreams[port.Hostname], upstream)
+			case api.ProtocolHTTPS:
+				upstream := net.JoinHostPort(ip.String(), strconv.Itoa(int(port.ContainerPort)))
+				httpsHostUpstreams[port.Hostname] = append(httpsHostUpstreams[port.Hostname], upstream)
+			default:
+				// TODO: implement L4 ingress routing for TCP and UDP.
+				log.Error("Unsupported protocol for ingress port.", "port", port)
+				continue
+			}
+		}
+	}
+
+	return httpHostUpstreams, httpsHostUpstreams
+}
+
+// serviceUpstreams creates a map of service names to their container IPs.
+// Only includes containers connected to the uncloud Docker network.
+func serviceUpstreams(containers []api.ServiceContainer) map[string][]string {
+	upstreams := make(map[string][]string)
+	for _, ctr := range containers {
+		ip := ctr.UncloudNetworkIP()
+		if !ip.IsValid() {
+			// Container is not connected to the uncloud Docker network (could be host network).
+			continue
+		}
+
+		serviceName := ctr.ServiceName()
+		upstreams[serviceName] = append(upstreams[serviceName], ip.String())
+	}
+
+	return upstreams
+}
+
+// renderCaddyfile renders a Caddyfile template with the upstreams function and data.
+func renderCaddyfile(tmplCtx templateContext, caddyfile string) (string, error) {
+	funcs := template.FuncMap{
+		"upstreams": upstreamsTemplateFn(tmplCtx),
+	}
+
+	tmpl, err := template.New("Caddyfile").Funcs(funcs).Parse(caddyfile)
+	if err != nil {
+		return "", fmt.Errorf("parse config as Go template: %w", err)
+	}
+
+	var buf bytes.Buffer
+	if err = tmpl.Execute(&buf, tmplCtx); err != nil {
+		return "", fmt.Errorf("execute template: %w", err)
+	}
+
+	return buf.String(), nil
+}

internal/machine/caddyconfig/caddyfile_test.go

@@ -0,0 +1,933 @@
+package caddyconfig
+
+import (
+	"context"
+	"errors"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/api/types/network"
+	"github.com/psviderski/uncloud/internal/machine/docker"
+	"github.com/psviderski/uncloud/internal/machine/store"
+	"github.com/psviderski/uncloud/pkg/api"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/require"
+)
+
+func TestCaddyfileGenerator(t *testing.T) {
+	caddyfileHeader := `# This file is autogenerated by Uncloud based on the configuration of running services.
+# Do not edit manually. Any manual changes will be overwritten on the next update.
+
+# Health check endpoint to verify Caddy reachability on this machine.
+http:// {
+	handle /.uncloud-verify {
+		respond "test-machine-id" 200
+	}
+	log
+}
+
+(common_proxy) {
+	# Retry failed requests up to lb_retries times against other available upstreams.
+	lb_retries 3
+	# Upstreams are marked unhealthy for fail_duration after a failed request (passive health checking).
+	fail_duration 30s
+}
+`
+
+	tests := []struct {
+		name       string
+		containers []store.ContainerRecord
+		want       string
+		wantErr    bool
+	}{
+		{
+			name:       "empty containers",
+			containers: []store.ContainerRecord{},
+			want:       caddyfileHeader,
+		},
+		{
+			name: "HTTP container",
+			containers: []store.ContainerRecord{
+				newContainerRecord(newContainer("10.210.0.2", "app.example.com:8080/http"), "mach1"),
+			},
+			want: caddyfileHeader + `
+# Sites generated from service ports.
+
+http://app.example.com {
+	reverse_proxy 10.210.0.2:8080 {
+		import common_proxy
+	}
+	log
+}
+`,
+		},
+		{
+			name: "load balancing multiple containers",
+			containers: []store.ContainerRecord{
+				newContainerRecord(newContainer("10.210.0.2", "app.example.com:8080/http"), "mach1"),
+				newContainerRecord(newContainer("10.210.0.3", "app.example.com:8080/http"), "mach1"),
+			},
+			want: caddyfileHeader + `
+# Sites generated from service ports.
+
+http://app.example.com {
+	reverse_proxy 10.210.0.2:8080 10.210.0.3:8080 {
+		import common_proxy
+	}
+	log
+}
+`,
+		},
+		{
+			name: "HTTPS container",
+			containers: []store.ContainerRecord{
+				newContainerRecord(newContainer("10.210.0.2", "secure.example.com:8000/https"), "mach1"),
+			},
+			want: caddyfileHeader + `
+# Sites generated from service ports.
+
+https://secure.example.com {
+	reverse_proxy 10.210.0.2:8000 {
+		import common_proxy
+	}
+	log
+}
+`,
+		},
+		{
+			name: "mixed HTTP and HTTPS",
+			containers: []store.ContainerRecord{
+				newContainerRecord(
+					newContainer("10.210.0.2",
+						"app.example.com:8080/http",
+						"web.example.com:8000/http"),
+					"mach1",
+				),
+				newContainerRecord(
+					newContainer("10.210.0.3",
+						"app.example.com:8080/http",
+						"secure.example.com:8888/https"),
+					"mach1",
+				),
+				newContainerRecord(
+					newContainer("10.210.0.4",
+						"web.example.com:8000/http",
+						"secure.example.com:8888/https"),
+					"mach1",
+				),
+				newContainerRecord(
+					newContainer("10.210.0.5",
+						"app.example.com:8080/http",
+						"web.example.com:8000/http",
+						"secure.example.com:8888/https"),
+					"mach1",
+				),
+			},
+			want: caddyfileHeader + `
+# Sites generated from service ports.
+
+http://app.example.com {
+	reverse_proxy 10.210.0.2:8080 10.210.0.3:8080 10.210.0.5:8080 {
+		import common_proxy
+	}
+	log
+}
+
+http://web.example.com {
+	reverse_proxy 10.210.0.2:8000 10.210.0.4:8000 10.210.0.5:8000 {
+		import common_proxy
+	}
+	log
+}
+
+https://secure.example.com {
+	reverse_proxy 10.210.0.3:8888 10.210.0.4:8888 10.210.0.5:8888 {
+		import common_proxy
+	}
+	log
+}
+`,
+		},
+		{
+			name: "container without uncloud network ignored",
+			containers: []store.ContainerRecord{
+				newContainerRecord(newContainerWithoutNetwork("ignored.example.com:8080/http"), "mach1"),
+			},
+			want: caddyfileHeader,
+		},
+		{
+			name: "container with invalid port ignored",
+			containers: []store.ContainerRecord{
+				newContainerRecord(newContainer("10.210.0.2", "invalid-port"), "mach1"),
+			},
+			want: caddyfileHeader,
+		},
+		{
+			name: "containers with unsupported protocols and host mode ignored",
+			containers: []store.ContainerRecord{
+				newContainerRecord(newContainer("10.210.0.2", "5000/tcp"), "mach1"),
+				newContainerRecord(newContainer("10.210.0.3", "5000/udp"), "mach1"),
+				newContainerRecord(newContainer("10.210.0.4", "80:8080/tcp@host"), "mach1"),
+			},
+			want: caddyfileHeader,
+		},
+	}
+
+	ctx := context.Background()
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Validator is not expected to be called in these tests.
+			generator := NewCaddyfileGenerator("test-machine-id", nil, nil)
+
+			config, err := generator.Generate(ctx, tt.containers)
+
+			if tt.wantErr {
+				assert.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+
+			assert.Equal(t, tt.want, config, "Generated Caddyfile doesn't match")
+		})
+	}
+}
+
+func TestCaddyfileGeneratorWithCustomConfigs(t *testing.T) {
+	caddyfileBase := `# This file is autogenerated by Uncloud based on the configuration of running services.
+# Do not edit manually. Any manual changes will be overwritten on the next update.
+
+# Health check endpoint to verify Caddy reachability on this machine.
+http:// {
+	handle /.uncloud-verify {
+		respond "test-machine-id" 200
+	}
+	log
+}
+
+(common_proxy) {
+	# Retry failed requests up to lb_retries times against other available upstreams.
+	lb_retries 3
+	# Upstreams are marked unhealthy for fail_duration after a failed request (passive health checking).
+	fail_duration 30s
+}
+`
+
+	tests := []struct {
+		name       string
+		containers []store.ContainerRecord
+		want       string
+		wantErr    bool
+	}{
+		{
+			name: "caddy service with valid global config",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"caddy",
+					"10.210.0.2",
+					`# Global Caddy configuration
+{
+	global directive
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: `# This file is autogenerated by Uncloud based on the configuration of running services.
+# Do not edit manually. Any manual changes will be overwritten on the next update.
+
+# User-defined global config from service 'caddy'.
+# Global Caddy configuration
+{
+	global directive
+}
+
+# Health check endpoint to verify Caddy reachability on this machine.
+http:// {
+	handle /.uncloud-verify {
+		respond "test-machine-id" 200
+	}
+	log
+}
+
+(common_proxy) {
+	# Retry failed requests up to lb_retries times against other available upstreams.
+	lb_retries 3
+	# Upstreams are marked unhealthy for fail_duration after a failed request (passive health checking).
+	fail_duration 30s
+}
+`,
+		},
+		{
+			name: "regular service with valid custom config",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"web",
+					"10.210.0.2",
+					`# Custom config for web service
+web.example.com {
+	reverse_proxy web:3000
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: caddyfileBase + `
+# User-defined config for service 'web'.
+# Custom config for web service
+web.example.com {
+	reverse_proxy web:3000
+}
+`,
+		},
+		{
+			name: "service with invalid config is skipped",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"bad-service",
+					"10.210.0.2",
+					`# test:invalid
+bad.config.com {
+	respond "This config is invalid"
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: caddyfileBase + `
+# Skipped invalid user-defined configs:
+# - service 'bad-service': validation failed: invalid config detected
+`,
+		},
+		{
+			name: "service with invalid config template is skipped",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"bad-template",
+					"10.210.0.2",
+					`
+bad.template.com {
+	reverse_proxy {{upstreams
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: caddyfileBase + `
+# Skipped invalid user-defined configs:
+# - service 'bad-template': failed to render template: parse config as Go template: template: Caddyfile:3: unexpected "}" in operand
+`,
+		},
+		{
+			name: "caddy service with invalid global config is skipped",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"caddy",
+					"10.210.0.2",
+					`# test:invalid
+localhost {
+	respond "Invalid global config"
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: caddyfileBase + `
+# Skipped invalid user-defined configs:
+# - service 'caddy': validation failed: invalid config detected
+`,
+		},
+		{
+			name: "caddy service on different machine is ignored",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"caddy",
+					"10.210.0.2",
+					`# Global config from other machine
+{
+	global directive
+}`,
+					"other-machine-id",
+					time.Now(),
+				),
+			},
+			want: caddyfileBase,
+		},
+		{
+			name: "multiple services with mixed valid and invalid configs",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"api",
+					"10.210.0.2",
+					`api.example.com {
+	reverse_proxy api:8080
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+				newContainerRecordWithCaddyConfig(
+					"invalid-svc",
+					"10.210.0.3",
+					`# test:invalid
+bad.example.com {
+	respond "Invalid"
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+				newContainerRecordWithCaddyConfig(
+					"web",
+					"10.210.0.4",
+					`web.example.com {
+	reverse_proxy web:3000
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: caddyfileBase + `
+# User-defined config for service 'api'.
+api.example.com {
+	reverse_proxy api:8080
+}
+
+# User-defined config for service 'web'.
+web.example.com {
+	reverse_proxy web:3000
+}
+
+# Skipped invalid user-defined configs:
+# - service 'invalid-svc': validation failed: invalid config detected
+`,
+		},
+		{
+			name: "combined: caddy global config + service configs + ports",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"caddy",
+					"10.210.0.1",
+					`# Global config
+{
+	global directive
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+				newContainerRecordWithPorts(
+					"app",
+					"10.210.0.2",
+					[]string{"app.example.com:8080/http"},
+					"test-machine-id",
+				),
+				newContainerRecordWithCaddyConfig(
+					"api",
+					"10.210.0.3",
+					`api.example.com {
+	reverse_proxy api:8000
+}`,
+					"other-machine-id",
+					time.Now(),
+				),
+			},
+			want: `# This file is autogenerated by Uncloud based on the configuration of running services.
+# Do not edit manually. Any manual changes will be overwritten on the next update.
+
+# User-defined global config from service 'caddy'.
+# Global config
+{
+	global directive
+}
+
+# Health check endpoint to verify Caddy reachability on this machine.
+http:// {
+	handle /.uncloud-verify {
+		respond "test-machine-id" 200
+	}
+	log
+}
+
+(common_proxy) {
+	# Retry failed requests up to lb_retries times against other available upstreams.
+	lb_retries 3
+	# Upstreams are marked unhealthy for fail_duration after a failed request (passive health checking).
+	fail_duration 30s
+}
+
+# Sites generated from service ports.
+
+http://app.example.com {
+	reverse_proxy 10.210.0.2:8080 {
+		import common_proxy
+	}
+	log
+}
+
+# User-defined config for service 'api'.
+api.example.com {
+	reverse_proxy api:8000
+}
+`,
+		},
+		{
+			name: "service with template directives using upstreams",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"web",
+					"10.210.0.2",
+					`web.example.com {
+	reverse_proxy {{upstreams}}
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+				newContainerRecordWithPorts(
+					"api",
+					"10.210.0.3",
+					[]string{"api.example.com:8080/http"},
+					"test-machine-id",
+				),
+			},
+			want: caddyfileBase + `
+# Sites generated from service ports.
+
+http://api.example.com {
+	reverse_proxy 10.210.0.3:8080 {
+		import common_proxy
+	}
+	log
+}
+
+# User-defined config for service 'web'.
+web.example.com {
+	reverse_proxy 10.210.0.2
+}
+`,
+		},
+		{
+			name: "only most recent container config is used per service",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"web",
+					"10.210.0.2",
+					`# Old config
+old.example.com {
+	respond "Old"
+}`,
+					"test-machine-id",
+					time.Now().Add(-1*time.Hour),
+				),
+				newContainerRecordWithCaddyConfig(
+					"web",
+					"10.210.0.3",
+					`# New config
+new.example.com {
+	respond "New"
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: caddyfileBase + `
+# User-defined config for service 'web'.
+# New config
+new.example.com {
+	respond "New"
+}
+`,
+		},
+		{
+			name: "compound test: upstreams variants, global caddy, and multi-machine services",
+			containers: []store.ContainerRecord{
+				// Global Caddy service on test-machine-id
+				newContainerRecordWithCaddyConfig(
+					"caddy",
+					"10.210.1.1",
+					`# Global config from test machine
+{
+	admin off
+}
+
+localhost:8080 {
+	respond "Admin panel"
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+				// Another caddy on different machine (should be ignored)
+				newContainerRecordWithCaddyConfig(
+					"caddy",
+					"10.210.2.1",
+					`# Should be ignored
+{
+	debug
+}`,
+					"machine-2",
+					time.Now(),
+				),
+
+				// API service containers across different machines
+				newContainerRecordWithPorts("api", "10.210.1.2", []string{"api.example.com:8080/http"},
+					"test-machine-id"),
+				newContainerRecordWithPorts("api", "10.210.2.2", []string{"api.example.com:8080/http"}, "machine-2"),
+				newContainerRecordWithPorts("api", "10.210.3.2", []string{"api.example.com:8080/http"}, "machine-3"),
+
+				// Web service with different versions on different machines
+				newContainerRecordWithCaddyConfig(
+					"web",
+					"10.210.1.3",
+					`# Web service config v1 (older)
+web-v1.example.com {
+	reverse_proxy web:3000
+}`,
+					"test-machine-id",
+					time.Now().Add(-2*time.Hour),
+				),
+				newContainerRecordWithPorts("web", "10.210.3.3", []string{"web.example.com:3000/http"}, "machine-3"),
+				newContainerRecordWithCaddyConfig(
+					"web",
+					"10.210.2.3",
+					`# Web service config v2 (most recent)
+web-v2.example.com {
+	reverse_proxy {{upstreams 8080}}
+}`,
+					"machine-2",
+					time.Now().Add(1*time.Second),
+				),
+
+				// DB service with custom config
+				newContainerRecordWithCaddyConfig(
+					"db",
+					"10.210.1.4",
+					`# DB admin panel
+dbadmin.example.com {
+	basicauth {
+		admin $2a$14$Zkx19XLiW6VYouLHR5NmfOFU0z2GTNmpkT/5qqR7hx4IjWJPDhjvG
+	}
+	reverse_proxy {{upstreams 5432}}
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+
+				// Gateway service with various upstream template usages
+				newContainerRecordWithCaddyConfig(
+					"gateway",
+					"10.210.1.5",
+					`# Testing different upstream template functions
+gateway.example.com {
+	# Current service upstreams (gateway)
+	handle /self {
+		reverse_proxy {{upstreams}}
+	}
+
+	# Named service upstreams without port
+	handle /api {
+		reverse_proxy {{upstreams "api"}}
+	}
+
+	# Named service upstreams with port
+	handle /api-custom {
+		reverse_proxy {{upstreams "api" 9000}}
+	}
+
+	# Current service with name and port
+	handle /self-port {
+		reverse_proxy {{upstreams .Name 8888}}
+	}
+
+	# Service with mixed containers (web) and advanced template
+	handle /web {
+		reverse_proxy {{- range $ip := index .Upstreams "web"}} https://{{$ip}}{{end}}
+	}
+
+	# Non-existent service
+	handle /missing {
+		reverse_proxy {{upstreams "nonexistent"}}
+	}
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+
+				// App service with just ports (no custom config)
+				newContainerRecordWithPorts("app", "10.210.1.6", []string{"app.example.com:3000/http"},
+					"test-machine-id"),
+				newContainerRecordWithPorts("app", "10.210.2.6", []string{"app.example.com:3000/http"}, "machine-2"),
+
+				// Service with invalid config (should be ignored)
+				newContainerRecordWithCaddyConfig(
+					"invalid",
+					"10.210.1.7",
+					`# test:invalid
+badconfig.com {
+	respond "This config is invalid"
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: `# This file is autogenerated by Uncloud based on the configuration of running services.
+# Do not edit manually. Any manual changes will be overwritten on the next update.
+
+# User-defined global config from service 'caddy'.
+# Global config from test machine
+{
+	admin off
+}
+
+localhost:8080 {
+	respond "Admin panel"
+}
+
+# Health check endpoint to verify Caddy reachability on this machine.
+http:// {
+	handle /.uncloud-verify {
+		respond "test-machine-id" 200
+	}
+	log
+}
+
+(common_proxy) {
+	# Retry failed requests up to lb_retries times against other available upstreams.
+	lb_retries 3
+	# Upstreams are marked unhealthy for fail_duration after a failed request (passive health checking).
+	fail_duration 30s
+}
+
+# Sites generated from service ports.
+
+http://api.example.com {
+	reverse_proxy 10.210.1.2:8080 10.210.2.2:8080 10.210.3.2:8080 {
+		import common_proxy
+	}
+	log
+}
+
+http://app.example.com {
+	reverse_proxy 10.210.1.6:3000 10.210.2.6:3000 {
+		import common_proxy
+	}
+	log
+}
+
+http://web.example.com {
+	reverse_proxy 10.210.3.3:3000 {
+		import common_proxy
+	}
+	log
+}
+
+# User-defined config for service 'db'.
+# DB admin panel
+dbadmin.example.com {
+	basicauth {
+		admin $2a$14$Zkx19XLiW6VYouLHR5NmfOFU0z2GTNmpkT/5qqR7hx4IjWJPDhjvG
+	}
+	reverse_proxy 10.210.1.4:5432
+}
+
+# User-defined config for service 'gateway'.
+# Testing different upstream template functions
+gateway.example.com {
+	# Current service upstreams (gateway)
+	handle /self {
+		reverse_proxy 10.210.1.5
+	}
+
+	# Named service upstreams without port
+	handle /api {
+		reverse_proxy 10.210.1.2 10.210.2.2 10.210.3.2
+	}
+
+	# Named service upstreams with port
+	handle /api-custom {
+		reverse_proxy 10.210.1.2:9000 10.210.2.2:9000 10.210.3.2:9000
+	}
+
+	# Current service with name and port
+	handle /self-port {
+		reverse_proxy 10.210.1.5:8888
+	}
+
+	# Service with mixed containers (web) and advanced template
+	handle /web {
+		reverse_proxy https://10.210.1.3 https://10.210.3.3 https://10.210.2.3
+	}
+
+	# Non-existent service
+	handle /missing {
+` + "\t\treverse_proxy " + `
+	}
+}
+
+# User-defined config for service 'web'.
+# Web service config v2 (most recent)
+web-v2.example.com {
+	reverse_proxy 10.210.1.3:8080 10.210.3.3:8080 10.210.2.3:8080
+}
+
+# Skipped invalid user-defined configs:
+# - service 'invalid': validation failed: invalid config detected
+`,
+		},
+		{
+			name: "multiple errors: invalid global, template error, and validation error",
+			containers: []store.ContainerRecord{
+				newContainerRecordWithCaddyConfig(
+					"caddy",
+					"10.210.0.1",
+					`# test:invalid
+{
+	invalid global
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+				newContainerRecordWithCaddyConfig(
+					"broken-template",
+					"10.210.0.2",
+					`broken.example.com {
+	reverse_proxy {{upstreams "missing
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+				newContainerRecordWithCaddyConfig(
+					"invalid",
+					"10.210.0.3",
+					`# test:invalid
+invalid.example.com {
+	respond "Invalid config"
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+				newContainerRecordWithCaddyConfig(
+					"valid",
+					"10.210.0.4",
+					`valid.example.com {
+	respond "Valid config"
+}`,
+					"test-machine-id",
+					time.Now(),
+				),
+			},
+			want: caddyfileBase + `
+# User-defined config for service 'valid'.
+valid.example.com {
+	respond "Valid config"
+}
+
+# Skipped invalid user-defined configs:
+# - service 'caddy': validation failed: invalid config detected
+# - service 'broken-template': failed to render template: parse config as Go template: template: Caddyfile:2: unterminated quoted string
+# - service 'invalid': validation failed: invalid config detected
+`,
+		},
+	}
+
+	ctx := context.Background()
+	validator := NewMockCaddyfileValidator(t)
+	validator.EXPECT().Validate(mock.Anything, mock.Anything).RunAndReturn(
+		func(ctx context.Context, caddyfile string) error {
+			if strings.Contains(caddyfile, "# test:invalid") {
+				return errors.New("invalid config detected")
+			}
+			return nil
+		})
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			generator := NewCaddyfileGenerator("test-machine-id", validator, nil)
+
+			config, err := generator.Generate(ctx, tt.containers)
+
+			if tt.wantErr {
+				assert.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+
+			assert.Equal(t, tt.want, config, "Generated Caddyfile doesn't match")
+		})
+	}
+}
+
+func newContainerRecord(ctr api.ServiceContainer, machineID string) store.ContainerRecord {
+	return store.ContainerRecord{
+		Container: ctr,
+		MachineID: machineID,
+	}
+}
+
+func newContainerRecordWithCaddyConfig(serviceName, ip, caddyConfig, machineID string, created time.Time) store.ContainerRecord {
+	return store.ContainerRecord{
+		Container: api.ServiceContainer{
+			Container: api.Container{
+				ContainerJSON: types.ContainerJSON{
+					ContainerJSONBase: &types.ContainerJSONBase{
+						ID: serviceName + "-" + ip, // Add ID for stable sorting
+						State: &types.ContainerState{
+							Running: true,
+						},
+						Created: created.UTC().Format(time.RFC3339Nano),
+					},
+					NetworkSettings: &types.NetworkSettings{
+						Networks: map[string]*network.EndpointSettings{
+							docker.NetworkName: {
+								IPAddress: ip,
+							},
+						},
+					},
+					Config: &container.Config{
+						Labels: map[string]string{
+							api.LabelServiceName: serviceName,
+						},
+					},
+				},
+			},
+			ServiceSpec: api.ServiceSpec{
+				Caddy: &api.CaddySpec{
+					Config: caddyConfig,
+				},
+			},
+		},
+		MachineID: machineID,
+	}
+}
+
+func newContainerRecordWithPorts(serviceName, ip string, ports []string, machineID string) store.ContainerRecord {
+	portsLabel := strings.Join(ports, ",")
+	return store.ContainerRecord{
+		Container: api.ServiceContainer{
+			Container: api.Container{
+				ContainerJSON: types.ContainerJSON{
+					ContainerJSONBase: &types.ContainerJSONBase{
+						ID: serviceName + "-" + ip, // Add ID for stable sorting
+						State: &types.ContainerState{
+							Running: true,
+						},
+						Created: time.Now().UTC().Format(time.RFC3339Nano),
+					},
+					NetworkSettings: &types.NetworkSettings{
+						Networks: map[string]*network.EndpointSettings{
+							docker.NetworkName: {
+								IPAddress: ip,
+							},
+						},
+					},
+					Config: &container.Config{
+						Labels: map[string]string{
+							api.LabelServiceName:  serviceName,
+							api.LabelServicePorts: portsLabel,
+						},
+					},
+				},
+			},
+		},
+		MachineID: machineID,
+	}
+}

internal/machine/caddyconfig/controller.go

@@ -14,48 +14,56 @@ import (
 )
 
 const (
-	CaddyGroup = "uncloud"
+	CaddyServiceName = "caddy"
-	VerifyPath = "/.uncloud-verify"
+	CaddyGroup       = "uncloud"
+	VerifyPath       = "/.uncloud-verify"
 )
 
 // Controller monitors container changes in the cluster store and generates a configuration file for Caddy reverse
 // proxy. The generated configuration allows Caddy to route external traffic to service containers across the internal
 // network.
 type Controller struct {
-	store          *store.Store
+	machineID string
-	path           string
+	configDir string
-	verifyResponse string
+	generator *CaddyfileGenerator
+	store     *store.Store
+	log       *slog.Logger
 }
 
-func NewController(store *store.Store, path string, verifyResponse string) (*Controller, error) {
+func NewController(machineID, configDir, adminSock string, store *store.Store) (*Controller, error) {
-	dir := filepath.Dir(path)
+	if err := os.MkdirAll(configDir, 0o750); err != nil {
-	if err := os.MkdirAll(dir, 0750); err != nil {
+		return nil, fmt.Errorf("create directory for Caddy configuration '%s': %w", configDir, err)
-		return nil, fmt.Errorf("create parent directory for Caddy configuration '%s': %w", dir, err)
 	}
-	if err := fs.Chown(dir, "", CaddyGroup); err != nil {
+	if err := fs.Chown(configDir, "", CaddyGroup); err != nil {
-		return nil, fmt.Errorf("change owner of parent directory for Caddy configuration '%s': %w", dir, err)
+		return nil, fmt.Errorf("change owner of directory for Caddy configuration '%s': %w", configDir, err)
 	}
 
+	log := slog.With("component", "caddy-controller")
+	validator := NewCaddyAdminValidator(adminSock)
+	generator := NewCaddyfileGenerator(machineID, validator, log)
+
 	return &Controller{
-		store:          store,
+		machineID: machineID,
-		path:           path,
+		configDir: configDir,
-		verifyResponse: verifyResponse,
+		generator: generator,
+		store:     store,
+		log:       log,
 	}, nil
 }
 
 func (c *Controller) Run(ctx context.Context) error {
-	containerRecords, changes, err := c.store.SubscribeContainers(ctx)
+	containers, changes, err := c.store.SubscribeContainers(ctx)
 	if err != nil {
 		return fmt.Errorf("subscribe to container changes: %w", err)
 	}
-	slog.Info("Subscribed to container changes in the cluster to generate Caddy configuration.")
+	c.log.Info("Subscribed to container changes in the cluster to generate Caddy configuration.")
 
-	containers, err := c.filterAvailableContainers(containerRecords)
+	containers = filterHealthyContainers(containers)
-	if err != nil {
+	if err = c.generateCaddyfile(ctx, containers); err != nil {
-		return fmt.Errorf("filter available containers: %w", err)
+		return fmt.Errorf("generate Caddyfile configuration: %w", err)
 	}
-	if err = c.generateConfig(containers); err != nil {
+	if err = c.generateJSONConfig(containers); err != nil {
-		return fmt.Errorf("generate Caddy configuration: %w", err)
+		return fmt.Errorf("generate Caddy JSON configuration: %w", err)
 	}
 
 	for {
@@ -64,47 +72,68 @@ func (c *Controller) Run(ctx context.Context) error {
 			if !ok {
 				return fmt.Errorf("containers subscription failed")
 			}
-			slog.Debug("Cluster containers changed, updating Caddy configuration.")
+			c.log.Info("Cluster containers changed, updating Caddy configuration.")
 
-			containerRecords, err = c.store.ListContainers(ctx, store.ListOptions{})
+			containers, err = c.store.ListContainers(ctx, store.ListOptions{})
 			if err != nil {
-				slog.Error("Failed to list containers.", "err", err)
+				c.log.Error("Failed to list containers.", "err", err)
 				continue
 			}
-			containers, err = c.filterAvailableContainers(containerRecords)
+			containers = filterHealthyContainers(containers)
-			if err != nil {
+
-				slog.Error("Failed to filter available containers.", "err", err)
+			if err = c.generateCaddyfile(ctx, containers); err != nil {
-				continue
+				c.log.Error("Failed to generate Caddyfile configuration.", "err", err)
 			}
-			if err = c.generateConfig(containers); err != nil {
+			if err = c.generateJSONConfig(containers); err != nil {
-				slog.Error("Failed to generate Caddy configuration.", "err", err)
+				c.log.Error("Failed to generate Caddy JSON configuration.", "err", err)
 			}
 
-			slog.Debug("Updated Caddy configuration.", "path", c.path)
+			c.log.Info("Updated Caddy configuration.", "dir", c.configDir)
 		case <-ctx.Done():
 			return nil
 		}
 	}
 }
 
-// filterAvailableContainers filters out containers from this machine that are likely unavailable. The availability
+// filterHealthyContainers filters out containers that are not healthy.
-// is determined by the cluster membership state of the machine that the container is running on.
+// TODO: Filters out containers from this machine that are likely unavailable. The availability can be determined
-// TODO: implement machine membership check using Corrossion Admin client.
+// by the cluster membership state of the machine that the container is running on. Implement machine membership
-func (c *Controller) filterAvailableContainers(
+// check using Corrossion Admin client.
-	containerRecords []store.ContainerRecord,
+func filterHealthyContainers(containers []store.ContainerRecord) []store.ContainerRecord {
-) ([]api.ServiceContainer, error) {
+	healthy := make([]store.ContainerRecord, 0, len(containers))
-	containers := make([]api.ServiceContainer, len(containerRecords))
+	for _, cr := range containers {
-	for i, cr := range containerRecords {
+		if cr.Container.Healthy() {
-		containers[i] = api.ServiceContainer{
+			healthy = append(healthy, cr)
-			Container: cr.Container,
-			// TODO: restore ServiceSpec from the container record once it's saved in the store.
 		}
 	}
-	return containers, nil
+	return healthy
 }
 
-func (c *Controller) generateConfig(containers []api.ServiceContainer) error {
+func (c *Controller) generateCaddyfile(ctx context.Context, containers []store.ContainerRecord) error {
-	config, err := GenerateConfig(containers, c.verifyResponse)
+	caddyfile, err := c.generator.Generate(ctx, containers)
+	if err != nil {
+		return fmt.Errorf("generate Caddyfile: %w", err)
+	}
+	caddyfilePath := filepath.Join(c.configDir, "Caddyfile")
+
+	// TODO: use atomic file write to avoid partial loads on Caddy watch reload.
+	if err = os.WriteFile(caddyfilePath, []byte(caddyfile), 0o640); err != nil {
+		return fmt.Errorf("write Caddyfile to file '%s': %w", caddyfilePath, err)
+	}
+	if err = fs.Chown(caddyfilePath, "", CaddyGroup); err != nil {
+		return fmt.Errorf("change owner of Caddyfile '%s': %w", caddyfilePath, err)
+	}
+
+	return nil
+}
+
+func (c *Controller) generateJSONConfig(containers []store.ContainerRecord) error {
+	serviceContainers := make([]api.ServiceContainer, len(containers))
+	for i, cr := range containers {
+		serviceContainers[i] = cr.Container
+	}
+
+	config, err := GenerateJSONConfig(serviceContainers, c.machineID)
 	if err != nil {
 		return err
 	}
@@ -113,12 +142,13 @@ func (c *Controller) generateConfig(containers []api.ServiceContainer) error {
 	if err != nil {
 		return fmt.Errorf("marshal Caddy configuration: %w", err)
 	}
+	configPath := filepath.Join(c.configDir, "caddy.json")
 
-	if err = os.WriteFile(c.path, configBytes, 0640); err != nil {
+	if err = os.WriteFile(configPath, configBytes, 0o640); err != nil {
-		return fmt.Errorf("write Caddy configuration to file '%s': %w", c.path, err)
+		return fmt.Errorf("write Caddy configuration to file '%s': %w", configPath, err)
 	}
-	if err = fs.Chown(c.path, "", CaddyGroup); err != nil {
+	if err = fs.Chown(configPath, "", CaddyGroup); err != nil {
-		return fmt.Errorf("change owner of Caddy configuration file '%s': %w", c.path, err)
+		return fmt.Errorf("change owner of Caddy configuration file '%s': %w", configPath, err)
 	}
 
 	return nil

internal/machine/caddyconfig/jsonconfig.go

@@ -4,9 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"log/slog"
 	"maps"
-	"net"
 	"net/http"
 	"slices"
 	"strconv"
@@ -19,47 +17,8 @@ import (
 	"github.com/psviderski/uncloud/pkg/api"
 )
 
-func GenerateConfig(containers []api.ServiceContainer, verifyResponse string) (*caddy.Config, error) {
+func GenerateJSONConfig(containers []api.ServiceContainer, verifyResponse string) (*caddy.Config, error) {
-	// Maps hostnames to lists of upstreams (container IP:port pairs).
+	httpHostUpstreams, httpsHostUpstreams := httpUpstreamsFromPorts(containers)
-	httpHostUpstreams := make(map[string][]string)
-	httpsHostUpstreams := make(map[string][]string)
-	for _, ctr := range containers {
-		if !ctr.Healthy() {
-			continue
-		}
-
-		ip := ctr.UncloudNetworkIP()
-		if !ip.IsValid() {
-			// Container is not connected to the uncloud Docker network (could be host network).
-			continue
-		}
-		log := slog.With("container", ctr.ID)
-
-		ports, err := ctr.ServicePorts()
-		if err != nil {
-			log.Error("Failed to parse service ports for container.", "err", err)
-			continue
-		}
-
-		for _, port := range ports {
-			if port.Mode != api.PortModeIngress {
-				continue
-			}
-
-			switch port.Protocol {
-			case api.ProtocolHTTP:
-				upstream := net.JoinHostPort(ip.String(), strconv.Itoa(int(port.ContainerPort)))
-				httpHostUpstreams[port.Hostname] = append(httpHostUpstreams[port.Hostname], upstream)
-			case api.ProtocolHTTPS:
-				upstream := net.JoinHostPort(ip.String(), strconv.Itoa(int(port.ContainerPort)))
-				httpsHostUpstreams[port.Hostname] = append(httpsHostUpstreams[port.Hostname], upstream)
-			default:
-				// TODO: implement L4 ingress routing for TCP and UDP.
-				log.Error("Unsupported protocol for ingress port.", "port", port)
-				continue
-			}
-		}
-	}
 
 	var warnings []caddyconfig.Warning
 	servers := make(map[string]*caddyhttp.Server)

internal/machine/caddyconfig/jsonconfig_test.go

@@ -13,7 +13,7 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestGenerateConfig(t *testing.T) {
+func TestGenerateJSONConfig(t *testing.T) {
 	configWithoutServices := `{
 		"servers": {
 			"http": {
@@ -312,73 +312,11 @@ func TestGenerateConfig(t *testing.T) {
 			want:    configWithoutServices,
 			wantErr: false,
 		},
-		{
-			name: "restarting container ignored",
-			containers: []api.ServiceContainer{
-				newRestartingContainer("10.210.0.2", "app.example.com:8080/http"),
-			},
-			want:    configWithoutServices,
-			wantErr: false,
-		},
-		{
-			name: "stopped container ignored",
-			containers: []api.ServiceContainer{
-				newStoppedContainer("10.210.0.2", "app.example.com:8080/http"),
-			},
-			want:    configWithoutServices,
-			wantErr: false,
-		},
-		{
-			name: "mix of running, restarting, and stopped containers",
-			containers: []api.ServiceContainer{
-				newContainer("10.210.0.2", "app.example.com:8080/http"),
-				newRestartingContainer("10.210.0.3", "app.example.com:8080/http"),
-				newStoppedContainer("10.210.0.4", "app.example.com:8080/http"),
-			},
-			want: `{
-                "servers": {
-                    "http": {
-                        "listen": [":80"],
-                        "routes": [
-                            {
-                                "match": [{"host": ["app.example.com"]}],
-                                "handle": [{
-                                    "handler": "reverse_proxy",
-									"health_checks": {
-                                        "passive": {
-                                            "fail_duration": 30000000000
-                                        }
-                                    },
-                                    "load_balancing": {
-                                        "retries": 3
-                                    },
-                                    "upstreams": [{"dial": "10.210.0.2:8080"}]
-                                }]
-                            },
-                            {
-                                "match": [{"path": ["/.uncloud-verify"]}],
-                                "handle": [{
-                                    "body": "verification-response-body",
-                                    "handler": "static_response",
-                                    "status_code": 200
-                                }]
-                            }
-                        ],
-						"logs": {}
-                    },
-                    "https": {
-                        "listen": [":443"],
-						"logs": {}
-                    }
-                }
-            }`,
-			wantErr: false,
-		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			config, err := GenerateConfig(tt.containers, "verification-response-body")
+			config, err := GenerateJSONConfig(tt.containers, "verification-response-body")
 
 			if tt.wantErr {
 				assert.Error(t, err)
@@ -439,15 +377,3 @@ func newContainerWithoutNetwork(ports ...string) api.ServiceContainer {
 		},
 	}}}
 }
-
-func newRestartingContainer(ip string, ports ...string) api.ServiceContainer {
-	ctr := newContainer(ip, ports...)
-	ctr.Container.State.Restarting = true
-	return ctr
-}
-
-func newStoppedContainer(ip string, ports ...string) api.ServiceContainer {
-	ctr := newContainer(ip, ports...)
-	ctr.Container.State.Running = false
-	return ctr
-}

internal/machine/caddyconfig/mocks_test.go

@@ -0,0 +1,95 @@
+// Code generated by mockery; DO NOT EDIT.
+// github.com/vektra/mockery
+// template: testify
+
+package caddyconfig
+
+import (
+	"context"
+
+	mock "github.com/stretchr/testify/mock"
+)
+
+// NewMockCaddyfileValidator creates a new instance of MockCaddyfileValidator. It also registers a testing interface on the mock and a cleanup function to assert the mocks expectations.
+// The first argument is typically a *testing.T value.
+func NewMockCaddyfileValidator(t interface {
+	mock.TestingT
+	Cleanup(func())
+}) *MockCaddyfileValidator {
+	mock := &MockCaddyfileValidator{}
+	mock.Mock.Test(t)
+
+	t.Cleanup(func() { mock.AssertExpectations(t) })
+
+	return mock
+}
+
+// MockCaddyfileValidator is an autogenerated mock type for the CaddyfileValidator type
+type MockCaddyfileValidator struct {
+	mock.Mock
+}
+
+type MockCaddyfileValidator_Expecter struct {
+	mock *mock.Mock
+}
+
+func (_m *MockCaddyfileValidator) EXPECT() *MockCaddyfileValidator_Expecter {
+	return &MockCaddyfileValidator_Expecter{mock: &_m.Mock}
+}
+
+// Validate provides a mock function for the type MockCaddyfileValidator
+func (_mock *MockCaddyfileValidator) Validate(ctx context.Context, caddyfile string) error {
+	ret := _mock.Called(ctx, caddyfile)
+
+	if len(ret) == 0 {
+		panic("no return value specified for Validate")
+	}
+
+	var r0 error
+	if returnFunc, ok := ret.Get(0).(func(context.Context, string) error); ok {
+		r0 = returnFunc(ctx, caddyfile)
+	} else {
+		r0 = ret.Error(0)
+	}
+	return r0
+}
+
+// MockCaddyfileValidator_Validate_Call is a *mock.Call that shadows Run/Return methods with type explicit version for method 'Validate'
+type MockCaddyfileValidator_Validate_Call struct {
+	*mock.Call
+}
+
+// Validate is a helper method to define mock.On call
+//   - ctx context.Context
+//   - caddyfile string
+func (_e *MockCaddyfileValidator_Expecter) Validate(ctx interface{}, caddyfile interface{}) *MockCaddyfileValidator_Validate_Call {
+	return &MockCaddyfileValidator_Validate_Call{Call: _e.mock.On("Validate", ctx, caddyfile)}
+}
+
+func (_c *MockCaddyfileValidator_Validate_Call) Run(run func(ctx context.Context, caddyfile string)) *MockCaddyfileValidator_Validate_Call {
+	_c.Call.Run(func(args mock.Arguments) {
+		var arg0 context.Context
+		if args[0] != nil {
+			arg0 = args[0].(context.Context)
+		}
+		var arg1 string
+		if args[1] != nil {
+			arg1 = args[1].(string)
+		}
+		run(
+			arg0,
+			arg1,
+		)
+	})
+	return _c
+}
+
+func (_c *MockCaddyfileValidator_Validate_Call) Return(err error) *MockCaddyfileValidator_Validate_Call {
+	_c.Call.Return(err)
+	return _c
+}
+
+func (_c *MockCaddyfileValidator_Validate_Call) RunAndReturn(run func(ctx context.Context, caddyfile string) error) *MockCaddyfileValidator_Validate_Call {
+	_c.Call.Return(run)
+	return _c
+}

internal/machine/caddyconfig/server.go

@@ -0,0 +1,39 @@
+package caddyconfig
+
+import (
+	"context"
+	"os"
+
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/emptypb"
+	"google.golang.org/protobuf/types/known/timestamppb"
+
+	"github.com/psviderski/uncloud/internal/machine/api/pb"
+)
+
+// Server implements the gRPC Caddy service.
+type Server struct {
+	pb.UnimplementedCaddyServer
+	service *Service
+}
+
+func NewServer(service *Service) *Server {
+	return &Server{service: service}
+}
+
+// GetConfig retrieves the current Caddy configuration from the machine.
+func (s *Server) GetConfig(ctx context.Context, _ *emptypb.Empty) (*pb.GetCaddyConfigResponse, error) {
+	caddyfile, modifiedAt, err := s.service.Caddyfile()
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil, status.Errorf(codes.NotFound, err.Error())
+		}
+		return nil, status.Errorf(codes.Internal, err.Error())
+	}
+
+	return &pb.GetCaddyConfigResponse{
+		Caddyfile:  caddyfile,
+		ModifiedAt: timestamppb.New(modifiedAt),
+	}, nil
+}

internal/machine/caddyconfig/service.go

@@ -0,0 +1,35 @@
+package caddyconfig
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+// Service provides methods to interact with the Caddy configuration on the machine.
+type Service struct {
+	configDir string
+}
+
+// NewService creates a new Service instance with the specified Caddy configuration directory.
+func NewService(configDir string) *Service {
+	return &Service{configDir: configDir}
+}
+
+// Caddyfile retrieves the current Caddy configuration (Caddyfile) from the machine's config directory.
+func (s *Service) Caddyfile() (string, time.Time, error) {
+	path := filepath.Join(s.configDir, "Caddyfile")
+	content, err := os.ReadFile(path)
+	if err != nil {
+		return "", time.Time{}, fmt.Errorf("read Caddyfile from file '%s': %w", path, err)
+	}
+
+	// Get the file modification time.
+	fileInfo, err := os.Stat(path)
+	if err != nil {
+		return "", time.Time{}, fmt.Errorf("get Caddyfile file info '%s': %w", path, err)
+	}
+
+	return string(content), fileInfo.ModTime(), nil
+}

internal/machine/caddyconfig/template.go

@@ -0,0 +1,77 @@
+package caddyconfig
+
+import (
+	"fmt"
+	"net"
+	"strconv"
+	"strings"
+)
+
+// templateContext holds the data available to Caddyfile templates.
+type templateContext struct {
+	// Name is the current service name.
+	Name string
+	// Upstreams maps service names to their container IPs.
+	Upstreams map[string][]string
+}
+
+// upstreamsTemplateFn returns a template function that generates a space separated string of upstreams for the service.
+// It optionally accepts a service name and a port number: {{upstreams [service-name] [port]}}.
+func upstreamsTemplateFn(tmplCtx templateContext) func(args ...any) (string, error) {
+	return func(args ...any) (string, error) {
+		var serviceName string
+		var port int
+
+		// Parse arguments.
+		switch len(args) {
+		case 0:
+			// Current service, default port.
+			serviceName = tmplCtx.Name
+		case 1:
+			// Either port (int) for current service or service name (string).
+			switch arg := args[0].(type) {
+			case int:
+				serviceName = tmplCtx.Name
+				port = arg
+			case string:
+				serviceName = arg
+				port = 0
+			default:
+				return "", fmt.Errorf("upstreams function: invalid argument type: %T", arg)
+			}
+		case 2:
+			// Service name and port.
+			name, ok := args[0].(string)
+			if !ok {
+				return "", fmt.Errorf("upstreams function: first argument must be service name (string)")
+			}
+			serviceName = name
+
+			p, ok := args[1].(int)
+			if !ok {
+				return "", fmt.Errorf("upstreams function: second argument must be port (int)")
+			}
+			port = p
+		default:
+			return "", fmt.Errorf("upstreams function: too many arguments; expected 0-2, got %d", len(args))
+		}
+
+		ips, ok := tmplCtx.Upstreams[serviceName]
+		if !ok || len(ips) == 0 {
+			// No upstreams available.
+			return "", nil
+		}
+
+		// Build the space separated upstreams string.
+		var upstreams []string
+		for _, ip := range ips {
+			if port > 0 {
+				upstreams = append(upstreams, net.JoinHostPort(ip, strconv.Itoa(port)))
+			} else {
+				upstreams = append(upstreams, ip)
+			}
+		}
+
+		return strings.Join(upstreams, " "), nil
+	}
+}

internal/machine/caddyconfig/validator.go

@@ -0,0 +1,71 @@
+package caddyconfig
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/caddyserver/caddy/v2"
+)
+
+// CaddyAdminValidator validates Caddyfile via the Caddy admin API.
+type CaddyAdminValidator struct {
+	socketPath string
+	client     *http.Client
+}
+
+func NewCaddyAdminValidator(socketPath string) *CaddyAdminValidator {
+	return &CaddyAdminValidator{
+		socketPath: socketPath,
+		client: &http.Client{
+			Timeout: 5 * time.Second,
+			Transport: &http.Transport{
+				DialContext: func(_ context.Context, _, _ string) (net.Conn, error) {
+					return net.Dial("unix", socketPath)
+				},
+			},
+		},
+	}
+}
+
+// Validate checks if the provided Caddyfile can be adapted to Caddy JSON config using the running Caddy instance via
+// its admin API. It doesn't guarantee that the Caddyfile is actually valid and can be loaded. For example, a tls
+// directive with a missing certificate will pass the adaptation but will fail when Caddy tries to load it.
+// But this is the best we can do over the admin API.
+// TODO: run 'docker exec caddy-container caddy validate' to do proper validation or implement a Caddy module that
+// exposes a validation endpoint.
+func (c *CaddyAdminValidator) Validate(ctx context.Context, caddyfile string) error {
+	// Bogus host is used so that http.NewRequest is happy but it doesn't matter since we're using a Unix socket.
+	req, err := http.NewRequestWithContext(ctx, "POST", "http://localhost/adapt", strings.NewReader(caddyfile))
+	if err != nil {
+		return fmt.Errorf("create adapt request: %w", err)
+	}
+	req.Header.Set("Content-Type", "text/caddyfile")
+
+	resp, err := c.client.Do(req)
+	if err != nil {
+		return fmt.Errorf("send adapt request: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == http.StatusOK {
+		return nil
+	}
+
+	body, _ := io.ReadAll(resp.Body)
+	// If the response is a 400 Bad Request, try to parse the error message from it.
+	if resp.StatusCode == http.StatusBadRequest {
+		var apiError caddy.APIError
+		if err = json.Unmarshal(body, &apiError); err == nil {
+			return errors.New(apiError.Message)
+		}
+	}
+
+	return errors.New(string(body))
+}

internal/machine/cluster.go

@@ -12,9 +12,9 @@ import (
 	"time"
 
 	"github.com/cenkalti/backoff/v4"
-	"github.com/docker/docker/client"
 	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/caddyconfig"
+	"github.com/psviderski/uncloud/internal/machine/constants"
 	"github.com/psviderski/uncloud/internal/machine/corroservice"
 	"github.com/psviderski/uncloud/internal/machine/dns"
 	"github.com/psviderski/uncloud/internal/machine/docker"
@@ -25,39 +25,42 @@ import (
 	"google.golang.org/grpc"
 )
 
-const (
+// clusterController is the main controller for the machine that is a cluster member. It manages components such as
-	APIPort = 51000
+// the WireGuard network, API server listening the WireGuard network, Corrosion service, Docker network and containers,
-)
+// and others.
-
+type clusterController struct {
-type networkController struct {
 	state *State
 	store *store.Store
 
 	wgnet           *network.WireGuardNetwork
 	endpointChanges <-chan network.EndpointChangeEvent
 
-	server        *grpc.Server
+	server       *grpc.Server
-	corroService  corroservice.Service
+	corroService corroservice.Service
-	dockerCli     *client.Client
+	dockerCtrl   *docker.Controller
-	caddyfileCtrl *caddyconfig.Controller
+	// dockerReady is signalled when Docker is configured and ready for containers.
+	dockerReady     chan<- struct{}
+	caddyconfigCtrl *caddyconfig.Controller
 
 	// dnsServer is the embedded internal DNS server for the cluster listening on the machine IP.
 	dnsServer   *dns.Server
 	dnsResolver *dns.ClusterResolver
+
+	// stopped is a channel that is closed when the controller is stopped.
+	stopped chan struct{}
 }
 
-func newNetworkController(
+func newClusterController(
 	state *State,
 	store *store.Store,
 	server *grpc.Server,
 	corroService corroservice.Service,
-	dockerCli *client.Client,
+	dockerService *docker.Service,
+	dockerReady chan<- struct{},
 	caddyfileCtrl *caddyconfig.Controller,
 	dnsServer *dns.Server,
 	dnsResolver *dns.ClusterResolver,
-) (
+) (*clusterController, error) {
-	*networkController, error,
-) {
 	slog.Info("Starting WireGuard network.")
 	wgnet, err := network.NewWireGuardNetwork()
 	if err != nil {
@@ -65,88 +68,97 @@ func newNetworkController(
 	}
 	endpointChanges := wgnet.WatchEndpoints()
 
-	return &networkController{
+	return &clusterController{
 		state:           state,
 		store:           store,
 		wgnet:           wgnet,
 		endpointChanges: endpointChanges,
 		server:          server,
 		corroService:    corroService,
-		dockerCli:       dockerCli,
+		dockerCtrl:      docker.NewController(state.ID, dockerService, store),
-		caddyfileCtrl:   caddyfileCtrl,
+		dockerReady:     dockerReady,
+		caddyconfigCtrl: caddyfileCtrl,
 		dnsServer:       dnsServer,
 		dnsResolver:     dnsResolver,
+		stopped:         make(chan struct{}),
 	}, nil
 }
 
-func (nc *networkController) Run(ctx context.Context) error {
+func (cc *clusterController) Run(ctx context.Context) error {
+	defer close(cc.stopped)
+
 	if err := firewall.ConfigureIptablesChains(); err != nil {
 		return fmt.Errorf("configure iptables chains: %w", err)
 	}
 
-	if err := nc.wgnet.Configure(*nc.state.Network); err != nil {
+	if err := cc.ensureDockerNetwork(ctx); err != nil {
+		return err
+	}
+	slog.Info("Docker network configured.")
+
+	if err := cc.wgnet.Configure(*cc.state.Network); err != nil {
 		return fmt.Errorf("configure WireGuard network: %w", err)
 	}
 	slog.Info("WireGuard network configured.")
 
-	if nc.corroService.Running() {
+	if cc.corroService.Running() {
 		// Corrosion service was running before the WireGuard network was configured so we need to restart it.
 		slog.Info("Restarting corrosion service to apply new configuration with WireGuard network.")
-		if err := nc.corroService.Restart(ctx); err != nil {
+		if err := cc.corroService.Restart(ctx); err != nil {
 			return fmt.Errorf("restart corrosion service: %w", err)
 		}
+		slog.Info("Corrosion service restarted.")
 	} else {
 		slog.Info("Starting corrosion service.")
-		if err := nc.corroService.Start(ctx); err != nil {
+		if err := cc.corroService.Start(ctx); err != nil {
 			return fmt.Errorf("start corrosion service: %w", err)
 		}
+		slog.Info("Corrosion service started.")
 	}
-	// TODO: Figure out if we need to manually stop the corrosion service when the context is done or just
-	//  rely on systemd to handle service dependencies on its own.
 
 	errGroup, ctx := errgroup.WithContext(ctx)
 
 	// Start the network API server. Assume the management IP can't be changed when the network is running.
-	apiAddr := net.JoinHostPort(nc.state.Network.ManagementIP.String(), strconv.Itoa(APIPort))
+	apiAddr := net.JoinHostPort(cc.state.Network.ManagementIP.String(), strconv.Itoa(constants.MachineAPIPort))
 	listener, err := net.Listen("tcp", apiAddr)
 	if err != nil {
 		return fmt.Errorf("listen API port: %w", err)
 	}
-	errGroup.Go(
+	errGroup.Go(func() error {
-		func() error {
+		slog.Info("Starting network API server.", "addr", apiAddr)
-			slog.Info("Starting network API server.", "addr", apiAddr)
+		if err := cc.server.Serve(listener); err != nil {
-			if err := nc.server.Serve(listener); err != nil {
+			return fmt.Errorf("network API server failed: %w", err)
-				return fmt.Errorf("network API server failed: %w", err)
+		}
-			}
+		return nil
-			return nil
+	})
-		},
-	)
 
 	errGroup.Go(func() error {
 		slog.Info("Starting embedded DNS resolver.")
-		if err := nc.dnsResolver.Run(ctx); err != nil {
+		if err := cc.dnsResolver.Run(ctx); err != nil {
 			return fmt.Errorf("embedded DNS resolver failed: %w", err)
 		}
 		return nil
 	})
 
+	// The Docker network must be created before starting the DNS server because it listens on the machine IP.
 	errGroup.Go(func() error {
 		slog.Info("Starting embedded DNS server.")
-		if err := nc.dnsServer.Run(ctx); err != nil {
+		if err := cc.dnsServer.Run(ctx); err != nil {
 			return fmt.Errorf("embedded DNS server failed: %w", err)
 		}
 		return nil
 	})
 
-	// Setup Docker network and synchronise containers to the cluster store.
+	// Synchronise Docker containers to the cluster store.
 	errGroup.Go(func() error {
-		return nc.prepareAndWatchDocker(ctx)
+		slog.Info("Watching Docker containers and syncing them to cluster store.")
+		return cc.syncDockerContainers(ctx)
 	})
 
 	// Handle machine changes in the cluster. Handling machine and endpoint changes should be done
 	// in separate goroutines to avoid a deadlock when reconfiguring the network.
 	errGroup.Go(func() error {
-		if err := nc.handleMachineChanges(ctx); err != nil {
+		if err := cc.handleMachineChanges(ctx); err != nil {
 			return fmt.Errorf("handle new machines: %w", err)
 		}
 		return nil
@@ -156,24 +168,24 @@ func (nc *networkController) Run(ctx context.Context) error {
 	errGroup.Go(func() error {
 		for {
 			select {
-			case e, ok := <-nc.endpointChanges:
+			case e, ok := <-cc.endpointChanges:
 				if !ok {
 					// The channel was closed, stop watching for changes.
-					nc.endpointChanges = nil
+					cc.endpointChanges = nil
 					return nil
 				}
 
-				nc.state.mu.Lock()
+				cc.state.mu.Lock()
-				for i := range nc.state.Network.Peers {
+				for i := range cc.state.Network.Peers {
-					if nc.state.Network.Peers[i].PublicKey.Equal(e.PublicKey) {
+					if cc.state.Network.Peers[i].PublicKey.Equal(e.PublicKey) {
-						nc.state.Network.Peers[i].Endpoint = &e.Endpoint
+						cc.state.Network.Peers[i].Endpoint = &e.Endpoint
 						break
 					}
 				}
-				if err := nc.state.Save(); err != nil {
+				if err := cc.state.Save(); err != nil {
 					slog.Error("Failed to save machine state.", "err", err)
 				}
-				nc.state.mu.Unlock()
+				cc.state.mu.Unlock()
 
 				slog.Debug("Preserved endpoint change in the machine state.",
 					"public_key", e.PublicKey, "endpoint", e.Endpoint)
@@ -184,48 +196,66 @@ func (nc *networkController) Run(ctx context.Context) error {
 	})
 
 	errGroup.Go(func() error {
-		if err := nc.wgnet.Run(ctx); err != nil {
+		if err := cc.wgnet.Run(ctx); err != nil {
 			return fmt.Errorf("WireGuard network failed: %w", err)
 		}
 		return nil
 	})
 
 	errGroup.Go(func() error {
-		slog.Info("Starting Caddyconfig controller.")
+		slog.Info("Starting caddyconfig controller.")
-		if err := nc.caddyfileCtrl.Run(ctx); err != nil {
+		if err := cc.caddyconfigCtrl.Run(ctx); err != nil {
-			//goland:noinspection GoErrorStringFormat
+			return fmt.Errorf("caddyconfig controller failed: %w", err)
-			return fmt.Errorf("Caddyconfig controller failed: %w", err)
 		}
 		return nil
 	})
 
 	// Wait for the context to be done and stop the network API server.
-	errGroup.Go(func() error {
+	<-ctx.Done()
-		<-ctx.Done()
+	slog.Info("Stopping network API server.")
-		slog.Info("Stopping network API server.")
+	// TODO: implement timeout for graceful shutdown.
-		// TODO: implement timeout for graceful shutdown.
+	cc.server.GracefulStop()
-		nc.server.GracefulStop()
+	slog.Info("Network API server stopped.")
-		slog.Info("Network API server stopped.")
-		return nil
-	})
 
-	return errGroup.Wait()
+	// Wait for all controllers to finish.
+	err = errGroup.Wait()
+
+	// It's safe to stop the Corrosion service after the controllers depending on it and API server are stopped.
+	// Use a new context with a timeout as the current context is already canceled.
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+	if corroErr := cc.corroService.Stop(ctx); corroErr != nil {
+		err = errors.Join(err, fmt.Errorf("stop corrosion service: %w", corroErr))
+	} else {
+		slog.Info("Corrosion service stopped.")
+	}
+
+	return err
 }
 
-// prepareAndWatchDocker configures the Docker network and watches local Docker containers to sync them
+// ensureDockerNetwork ensures that the Docker network is configured and ready for containers.
-// to the cluster store.
+func (cc *clusterController) ensureDockerNetwork(ctx context.Context) error {
-func (nc *networkController) prepareAndWatchDocker(ctx context.Context) error {
+	if err := cc.dockerCtrl.WaitDaemonReady(ctx); err != nil {
-	manager := docker.NewManager(nc.dockerCli, nc.state.ID, nc.store)
-	if err := manager.WaitDaemonReady(ctx); err != nil {
 		return fmt.Errorf("wait for Docker daemon: %w", err)
 	}
 
-	if err := manager.EnsureUncloudNetwork(ctx, nc.state.Network.Subnet, nc.dnsServer.ListenAddr()); err != nil {
+	if err := cc.dockerCtrl.EnsureUncloudNetwork(
+		ctx,
+		cc.state.Network.Subnet,
+		cc.dnsServer.ListenAddr(),
+	); err != nil {
 		return fmt.Errorf("ensure Docker network: %w", err)
 	}
-	slog.Info("Docker network configured.")
 
-	slog.Info("Watching Docker containers and syncing them to cluster store.")
+	// Signal that Docker is ready for containers.
+	close(cc.dockerReady)
+
+	return nil
+}
+
+// syncDockerContainers watches local Docker containers and syncs them to the cluster store.
+// TODO: move this to the Docker controller.
+func (cc *clusterController) syncDockerContainers(ctx context.Context) error {
 	// Retry to watch and sync containers until the context is done.
 	boff := backoff.WithContext(backoff.NewExponentialBackOff(
 		backoff.WithInitialInterval(100*time.Millisecond),
@@ -233,7 +263,7 @@ func (nc *networkController) prepareAndWatchDocker(ctx context.Context) error {
 		backoff.WithMaxElapsedTime(0),
 	), ctx)
 	watchAndSync := func() error {
-		if wErr := manager.WatchAndSyncContainers(ctx); wErr != nil {
+		if wErr := cc.dockerCtrl.WatchAndSyncContainers(ctx); wErr != nil {
 			slog.Error("Failed to watch and sync containers to cluster store, retrying.", "err", wErr)
 			return wErr
 		}
@@ -251,7 +281,7 @@ func (nc *networkController) prepareAndWatchDocker(ctx context.Context) error {
 
 // handleMachineChanges subscribes to machine changes in the cluster and reconfigures the network peers accordingly
 // when changes occur.
-func (nc *networkController) handleMachineChanges(ctx context.Context) error {
+func (cc *clusterController) handleMachineChanges(ctx context.Context) error {
 	for {
 		// Retry to subscribe to machine changes indefinitely until the context is done.
 		boff := backoff.WithContext(backoff.NewExponentialBackOff(
@@ -266,7 +296,7 @@ func (nc *networkController) handleMachineChanges(ctx context.Context) error {
 			err      error
 		)
 		subscribe := func() error {
-			if machines, changes, err = nc.store.SubscribeMachines(ctx); err != nil {
+			if machines, changes, err = cc.store.SubscribeMachines(ctx); err != nil {
 				slog.Info("Failed to subscribe to machine changes, retrying.", "err", err)
 			}
 			return err
@@ -284,7 +314,7 @@ func (nc *networkController) handleMachineChanges(ctx context.Context) error {
 		// completes. Skip configuration now and apply it when the store changes are received.
 		if len(machines) > 0 {
 			slog.Info("Reconfiguring network peers with the current machines.", "machines", len(machines))
-			if err = nc.configurePeers(machines); err != nil {
+			if err = cc.configurePeers(machines); err != nil {
 				slog.Error("Failed to configure peers.", "err", err)
 			}
 		}
@@ -296,11 +326,11 @@ func (nc *networkController) handleMachineChanges(ctx context.Context) error {
 			//  be reworked as well.
 			case <-changes:
 				slog.Info("Cluster machines changed, reconfiguring network peers.")
-				if machines, err = nc.store.ListMachines(ctx); err != nil {
+				if machines, err = cc.store.ListMachines(ctx); err != nil {
 					slog.Error("Failed to list machines.", "err", err)
 					continue
 				}
-				if err = nc.configurePeers(machines); err != nil {
+				if err = cc.configurePeers(machines); err != nil {
 					slog.Error("Failed to configure peers.", "err", err)
 				}
 			case <-ctx.Done():
@@ -310,23 +340,23 @@ func (nc *networkController) handleMachineChanges(ctx context.Context) error {
 	}
 }
 
-func (nc *networkController) configurePeers(machines []*pb.MachineInfo) error {
+func (cc *clusterController) configurePeers(machines []*pb.MachineInfo) error {
 	if len(machines) == 0 {
 		return fmt.Errorf("no machines to configure peers")
 	}
 
-	nc.state.mu.RLock()
+	cc.state.mu.RLock()
-	currentPeerEndpoints := make(map[string]*netip.AddrPort, len(nc.state.Network.Peers))
+	currentPeerEndpoints := make(map[string]*netip.AddrPort, len(cc.state.Network.Peers))
-	for _, p := range nc.state.Network.Peers {
+	for _, p := range cc.state.Network.Peers {
 		currentPeerEndpoints[p.PublicKey.String()] = p.Endpoint
 	}
-	nc.state.mu.RUnlock()
+	cc.state.mu.RUnlock()
 
 	// Construct the list of peers from the machine configurations ensuring that the current endpoint is preserved.
 	peers := make([]network.PeerConfig, 0, len(machines)-1)
 	for _, m := range machines {
 		// Skip the current machine.
-		if m.Id == nc.state.ID {
+		if m.Id == cc.state.ID {
 			continue
 		}
 		if err := m.Network.Validate(); err != nil {
@@ -359,20 +389,37 @@ func (nc *networkController) configurePeers(machines []*pb.MachineInfo) error {
 	}
 
 	// Preserve the new list of peers in the machine state.
-	nc.state.mu.Lock()
+	cc.state.mu.Lock()
-	nc.state.Network.Peers = peers
+	cc.state.Network.Peers = peers
-	err := nc.state.Save()
+	err := cc.state.Save()
-	nc.state.mu.Unlock()
+	cc.state.mu.Unlock()
 	if err != nil {
 		return fmt.Errorf("save machine state: %w", err)
 	}
 
-	nc.state.mu.RLock()
+	cc.state.mu.RLock()
-	defer nc.state.mu.RUnlock()
+	defer cc.state.mu.RUnlock()
-	if err = nc.wgnet.Configure(*nc.state.Network); err != nil {
+	if err = cc.wgnet.Configure(*cc.state.Network); err != nil {
 		return fmt.Errorf("configure network peers: %w", err)
 	}
 	return nil
 }
 
-// TODO: method to shutdown network when leaving a cluster. Regular context cancellation shouldn't bring it down.
+// Cleanup cleans up the cluster resources such as the WireGuard network, iptables rules, Docker network and containers.
+func (cc *clusterController) Cleanup() error {
+	// Wait for the controller to stop before cleaning up.
+	<-cc.stopped
+
+	var errs []error
+	if err := cc.dockerCtrl.Cleanup(); err != nil {
+		errs = append(errs, fmt.Errorf("cleanup Docker resources: %w", err))
+	}
+	if err := cc.wgnet.Cleanup(); err != nil {
+		errs = append(errs, fmt.Errorf("cleanup WireGuard network: %w", err))
+	}
+	if err := firewall.CleanupIptablesChains(); err != nil {
+		errs = append(errs, fmt.Errorf("cleanup iptables chains: %w", err))
+	}
+
+	return errors.Join(errs...)
+}

internal/machine/cluster/cluster.go

@@ -5,17 +5,18 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-	"google.golang.org/protobuf/types/known/emptypb"
 	"log/slog"
 	"net/netip"
 	"time"
+
 	"github.com/psviderski/uncloud/internal/corrosion"
 	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/psviderski/uncloud/internal/machine/store"
 	"github.com/psviderski/uncloud/internal/secret"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/emptypb"
 )
 
 type Cluster struct {
@@ -197,6 +198,89 @@ func (c *Cluster) AddMachine(ctx context.Context, req *pb.AddMachineRequest) (*p
 	return resp, nil
 }
 
+// UpdateMachine updates machine configuration in the cluster.
+func (c *Cluster) UpdateMachine(ctx context.Context, req *pb.UpdateMachineRequest) (*pb.UpdateMachineResponse, error) {
+	if err := c.checkInitialised(ctx); err != nil {
+		return nil, err
+	}
+
+	if req.MachineId == "" {
+		return nil, status.Error(codes.InvalidArgument, "machine_id not set")
+	}
+
+	// Get the current machine info
+	currentMachine, err := c.store.GetMachine(ctx, req.MachineId)
+	if err != nil {
+		if errors.Is(err, store.ErrMachineNotFound) {
+			return nil, status.Errorf(codes.NotFound, "machine not found: %s", req.MachineId)
+		}
+		return nil, status.Errorf(codes.Internal, "failed to get machine: %v", err)
+	}
+
+	// Create a copy of the current machine for updating
+	updatedMachine := &pb.MachineInfo{
+		Id:       currentMachine.Id,
+		Name:     currentMachine.Name,
+		Network:  currentMachine.Network,
+		PublicIp: currentMachine.PublicIp,
+	}
+
+	// Apply updates from the request
+	if req.Name != nil {
+		// Check for empty name
+		if *req.Name == "" {
+			return nil, status.Error(codes.InvalidArgument, "machine name cannot be empty")
+		}
+		// Check for duplicate names (excluding the current machine)
+		if *req.Name != currentMachine.Name {
+			machines, err := c.store.ListMachines(ctx)
+			if err != nil {
+				return nil, status.Errorf(codes.Internal, "list machines: %v", err)
+			}
+			for _, m := range machines {
+				if m.Id != req.MachineId && m.Name == *req.Name {
+					return nil, status.Errorf(codes.AlreadyExists, "machine with name %q already exists", *req.Name)
+				}
+			}
+		}
+		updatedMachine.Name = *req.Name
+	}
+	if req.PublicIp != nil {
+		// Check if this is an empty IP (used to signal removal)
+		if len(req.PublicIp.Ip) == 0 {
+			// User wants to remove public IP
+			updatedMachine.PublicIp = nil
+		} else {
+			// Validate and set the new IP
+			ip, err := req.PublicIp.ToAddr()
+			if err != nil {
+				return nil, status.Errorf(codes.InvalidArgument, "invalid public IP: %v", err)
+			}
+			if !ip.IsValid() {
+				return nil, status.Error(codes.InvalidArgument, "invalid public IP")
+			}
+			updatedMachine.PublicIp = req.PublicIp
+		}
+	}
+	if req.Endpoints != nil {
+		updatedMachine.Network.Endpoints = req.Endpoints
+	}
+
+	// Update the machine in the store
+	if err = c.store.UpdateMachine(ctx, updatedMachine); err != nil {
+		if errors.Is(err, store.ErrMachineNotFound) {
+			return nil, status.Errorf(codes.NotFound, "machine not found: %s", req.MachineId)
+		}
+		return nil, status.Errorf(codes.Internal, "update machine: %v", err)
+	}
+
+	slog.Info("Machine configuration updated in the cluster.",
+		"id", updatedMachine.Id, "name", updatedMachine.Name)
+
+	resp := &pb.UpdateMachineResponse{Machine: updatedMachine}
+	return resp, nil
+}
+
 // ListMachines lists all machines in the cluster including their membership states.
 func (c *Cluster) ListMachines(ctx context.Context, _ *emptypb.Empty) (*pb.ListMachinesResponse, error) {
 	if err := c.checkInitialised(ctx); err != nil {
@@ -242,3 +326,24 @@ func (c *Cluster) ListMachines(ctx context.Context, _ *emptypb.Empty) (*pb.ListM
 
 	return &pb.ListMachinesResponse{Machines: members}, nil
 }
+
+// RemoveMachine removes a machine from the cluster.
+func (c *Cluster) RemoveMachine(ctx context.Context, req *pb.RemoveMachineRequest) (*emptypb.Empty, error) {
+	if err := c.checkInitialised(ctx); err != nil {
+		return nil, err
+	}
+
+	if req.Id == "" {
+		return nil, status.Error(codes.InvalidArgument, "machine ID not set")
+	}
+
+	if err := c.store.DeleteMachine(ctx, req.Id); err != nil {
+		if errors.Is(err, store.ErrMachineNotFound) {
+			return nil, status.Errorf(codes.NotFound, "machine not found: %s", req.Id)
+		}
+		return nil, status.Errorf(codes.Internal, "delete machine from store: %v", err)
+	}
+	slog.Info("Machine removed from the cluster.", "id", req.Id)
+
+	return &emptypb.Empty{}, nil
+}

internal/machine/cluster/dns.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+
 	"github.com/psviderski/uncloud/internal/dns"
 	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/internal/machine/store"

internal/machine/cluster/ipam.go

@@ -3,8 +3,9 @@ package cluster
 import (
 	"errors"
 	"fmt"
-	"go4.org/netipx"
 	"net/netip"
+
+	"go4.org/netipx"
 )
 
 const DefaultSubnetBits = 24

internal/machine/cluster/machine.go

@@ -2,6 +2,7 @@ package cluster
 
 import (
 	"fmt"
+
 	"github.com/psviderski/uncloud/internal/secret"
 )
 

internal/machine/constants/constants.go

@@ -0,0 +1,6 @@
+package constants
+
+const (
+	// MachineAPIPort is the port for the Machine API service on the management WireGuard network.
+	MachineAPIPort = 51000
+)

internal/machine/corroservice/config.go

@@ -3,10 +3,11 @@ package corroservice
 import (
 	"bytes"
 	"fmt"
-	"github.com/BurntSushi/toml"
 	"net/netip"
 	"os"
 	"path/filepath"
+
+	"github.com/BurntSushi/toml"
 	"github.com/psviderski/uncloud/internal/fs"
 )
 
@@ -50,7 +51,7 @@ func (c *Config) Write(path, owner string) error {
 	if err := encoder.Encode(c); err != nil {
 		return fmt.Errorf("encode config: %w", err)
 	}
-	if err := os.WriteFile(path, data.Bytes(), 0600); err != nil {
+	if err := os.WriteFile(path, data.Bytes(), 0o600); err != nil {
 		return err
 	}
 	if err := fs.Chown(path, owner, owner); err != nil {
@@ -62,10 +63,10 @@ func (c *Config) Write(path, owner string) error {
 func MkDataDir(dir, owner string) error {
 	parent, _ := filepath.Split(dir)
 	// Use 0711 for parent directories to allow `owner` to access its nested data directory.
-	if err := os.MkdirAll(parent, 0711); err != nil {
+	if err := os.MkdirAll(parent, 0o711); err != nil {
 		return fmt.Errorf("create directory %q: %w", parent, err)
 	}
-	if err := os.Mkdir(dir, 0700); err != nil {
+	if err := os.Mkdir(dir, 0o700); err != nil {
 		if !os.IsExist(err) {
 			return fmt.Errorf("create directory %q: %w", dir, err)
 		}

internal/machine/corroservice/docker.go

@@ -3,15 +3,16 @@ package corroservice
 import (
 	"context"
 	"fmt"
+	"io"
+	"log/slog"
+	"path/filepath"
+	"time"
+
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/image"
 	"github.com/docker/docker/api/types/mount"
 	"github.com/docker/docker/api/types/network"
 	"github.com/docker/docker/client"
-	"io"
-	"log/slog"
-	"path/filepath"
-	"time"
 )
 
 const (
@@ -26,29 +27,47 @@ type DockerService struct {
 	User    string
 }
 
-func NewDockerService(cli *client.Client, image, name, dataDir string) *DockerService {
-	return &DockerService{
-		Client:  cli,
-		Image:   image,
-		Name:    name,
-		DataDir: dataDir,
-	}
-}
-
 func (s *DockerService) Start(ctx context.Context) error {
 	_, err := s.Client.ContainerInspect(ctx, s.Name)
 	if err != nil {
-		if client.IsErrNotFound(err) {
+		if !client.IsErrNotFound(err) {
-			return s.startNewContainer(ctx)
+			return fmt.Errorf("inspect container %q: %w", s.Name, err)
+		}
+		if err = s.startNewContainer(ctx); err != nil {
+			return err
+		}
+	} else {
+		// Container already exists.
+		// TODO: recreate only if the container configuration has to be changed.
+		if err = s.Client.ContainerRemove(ctx, s.Name, container.RemoveOptions{Force: true}); err != nil {
+			return fmt.Errorf("remove container %q: %w", s.Name, err)
+		}
+		if err = s.startNewContainer(ctx); err != nil {
+			return err
 		}
-		return fmt.Errorf("inspect container %q: %w", s.Name, err)
-	}
-	// TODO: recreate only if the container configuration has to be changed.
-	if err = s.Client.ContainerRemove(ctx, s.Name, container.RemoveOptions{Force: true}); err != nil {
-		return fmt.Errorf("remove container %q: %w", s.Name, err)
 	}
 
-	return s.startNewContainer(ctx)
+	slog.Debug("Waiting for corrosion service to be ready.")
+	if err = WaitReady(ctx, s.DataDir); err != nil {
+		return err
+	}
+	slog.Debug("Corrosion service is ready.")
+
+	return nil
+}
+
+func (s *DockerService) Stop(ctx context.Context) error {
+	if err := s.Client.ContainerStop(ctx, s.Name, container.StopOptions{}); err != nil {
+		return fmt.Errorf("stop container %q: %w", s.Name, err)
+	}
+	slog.Debug("Corrosion Docker container stopped.", "name", s.Name)
+
+	if err := s.Client.ContainerRemove(ctx, s.Name, container.RemoveOptions{}); err != nil {
+		return fmt.Errorf("remove container %q: %w", s.Name, err)
+	}
+	slog.Debug("Corrosion Docker container removed.", "name", s.Name)
+
+	return nil
 }
 
 func (s *DockerService) Restart(ctx context.Context) error {

internal/machine/corroservice/service.go

@@ -1,9 +1,62 @@
 package corroservice
 
-import "context"
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/BurntSushi/toml"
+	"github.com/cenkalti/backoff/v4"
+	"github.com/psviderski/uncloud/internal/corrosion"
+)
 
 type Service interface {
 	Start(ctx context.Context) error
+	Stop(ctx context.Context) error
 	Restart(ctx context.Context) error
 	Running() bool
 }
+
+// WaitReady waits for the Corrosion service to be ready with the uncloud schema applied.
+func WaitReady(ctx context.Context, dataDir string) error {
+	// Read the config file to get the API address.
+	configPath := filepath.Join(dataDir, "config.toml")
+	configData, err := os.ReadFile(configPath)
+	if err != nil {
+		return fmt.Errorf("read config file: %w", err)
+	}
+
+	var config Config
+	if err = toml.Unmarshal(configData, &config); err != nil {
+		return fmt.Errorf("unmarshal config: %w", err)
+	}
+
+	corro, err := corrosion.NewAPIClient(config.API.Addr)
+	if err != nil {
+		return fmt.Errorf("create corrosion API client: %w", err)
+	}
+
+	// Corrosion starts serving the API before applying the schema. Query the cluster table with exponential backoff
+	// to check if the uncloud schema has been applied.
+	checkReady := func() error {
+		rows, err := corro.QueryContext(ctx, "SELECT 1 FROM cluster LIMIT 1")
+		if err != nil {
+			return fmt.Errorf("query cluster table: %w", err)
+		}
+		defer rows.Close()
+
+		return nil
+	}
+
+	b := backoff.NewExponentialBackOff(
+		backoff.WithInitialInterval(50*time.Millisecond),
+		backoff.WithMaxInterval(1*time.Second),
+		backoff.WithMaxElapsedTime(15*time.Second),
+	)
+	if err = backoff.Retry(checkReady, backoff.WithContext(b, ctx)); err != nil {
+		return fmt.Errorf("corrosion service did not become ready: %w", err)
+	}
+	return nil
+}

internal/machine/corroservice/subprocess.go

@@ -1,157 +0,0 @@
-package corroservice
-
-import (
-	"bufio"
-	"context"
-	"fmt"
-	"log/slog"
-	"os/exec"
-	"path/filepath"
-	"sync"
-	"syscall"
-	"time"
-)
-
-const (
-	DefaultCommand = "corrosion"
-	DefaultDataDir = "/var/lib/uncloud/corrosion"
-)
-
-// SubprocessService implements the Service interface by running the service as a subprocess.
-type SubprocessService struct {
-	Command string
-	DataDir string
-
-	cmd         *exec.Cmd
-	running     bool
-	mu          sync.Mutex
-	cancelWatch context.CancelFunc
-}
-
-func DefaultSubprocessService() *SubprocessService {
-	return &SubprocessService{
-		Command: DefaultCommand,
-		DataDir: DefaultDataDir,
-	}
-}
-
-// TODO: maybe stop the process if this ctx is cancelled.
-func (s *SubprocessService) Start(ctx context.Context) error {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	if s.running {
-		return nil
-	}
-	return s.startProcess(ctx)
-}
-
-func (s *SubprocessService) Restart(ctx context.Context) error {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-
-	if s.running {
-		if err := s.stopProcess(); err != nil {
-			return fmt.Errorf("stop process: %w", err)
-		}
-	}
-	return s.startProcess(ctx)
-}
-
-func (s *SubprocessService) Running() bool {
-	s.mu.Lock()
-	defer s.mu.Unlock()
-	return s.running
-}
-
-func (s *SubprocessService) startProcess(ctx context.Context) error {
-	s.cmd = exec.Command(s.Command, "agent", "-c", filepath.Join(s.DataDir, "config.toml"))
-
-	// Redirect stdout and stderr to the logger.
-	stdout, err := s.cmd.StdoutPipe()
-	if err != nil {
-		return fmt.Errorf("create stdout pipe: %w", err)
-	}
-	stderr, err := s.cmd.StderrPipe()
-	if err != nil {
-		return fmt.Errorf("create stderr pipe: %w", err)
-	}
-
-	go func() {
-		scanner := bufio.NewScanner(stdout)
-		for scanner.Scan() {
-			slog.Info("[corrosion]: " + scanner.Text())
-		}
-		// TODO: remove
-		slog.Info("######## corrosion redirect go routine end ########")
-	}()
-
-	go func() {
-		scanner := bufio.NewScanner(stderr)
-		for scanner.Scan() {
-			slog.Error("[corrosion]: " + scanner.Text())
-		}
-	}()
-
-	if err = s.cmd.Start(); err != nil {
-		return fmt.Errorf("start process: %w", err)
-	}
-	s.running = true
-
-	// Watch for process exit to update running status.
-	go func() {
-		if err := s.cmd.Wait(); err != nil {
-			slog.Error("corrosion process exited with error.", "code", s.cmd.ProcessState.ExitCode(), "err", err)
-		}
-
-		s.mu.Lock()
-		s.running = false
-		s.mu.Unlock()
-	}()
-
-	// TODO: figure out the waiting process
-	// Wait for initialization
-	//timer := time.NewTimer(2 * time.Second)
-	//defer timer.Stop()
-
-	//select {
-	////case <-timer.C:
-	////	s.running = true
-	////	return nil
-	//case <-watchCtx.Done():
-	//	return fmt.Errorf("process failed to start")
-	//case <-ctx.Done():
-	//	s.stopProcess()
-	//	return ctx.Err()
-	//}
-	return nil
-}
-
-func (s *SubprocessService) stopProcess() error {
-	if s.cmd == nil || s.cmd.Process == nil {
-		return nil
-	}
-
-	if err := s.cmd.Process.Signal(syscall.SIGTERM); err != nil {
-		return fmt.Errorf("send SIGTERM: %w", err)
-	}
-
-	// Wait up to 5 seconds for graceful shutdown before killing the process.
-	done := make(chan error, 1)
-	go func() {
-		done <- s.cmd.Wait()
-	}()
-
-	select {
-	case <-time.After(5 * time.Second):
-		if err := s.cmd.Process.Kill(); err != nil {
-			return fmt.Errorf("kill process: %w", err)
-		}
-	case err := <-done:
-		if err != nil {
-			return fmt.Errorf("process exited with error: %w", err)
-		}
-	}
-
-	return nil
-}

internal/machine/corroservice/systemd.go

@@ -5,7 +5,6 @@ import (
 	"fmt"
 	"log/slog"
 	"os/exec"
-	"time"
 )
 
 const DefaultSystemdUnit = "uncloud-corrosion.service"
@@ -27,6 +26,15 @@ func (s *SystemdService) Start(ctx context.Context) error {
 	return s.startOrRestart(ctx, "start")
 }
 
+func (s *SystemdService) Stop(_ context.Context) error {
+	if _, err := exec.Command("systemctl", "stop", s.Unit).Output(); err != nil {
+		return fmt.Errorf("systemctl stop %s: %w", s.Unit, err)
+	}
+	slog.Info("Corrosion systemd service stopped.", "unit", s.Unit)
+
+	return nil
+}
+
 func (s *SystemdService) Restart(ctx context.Context) error {
 	return s.startOrRestart(ctx, "restart")
 }
@@ -35,20 +43,15 @@ func (s *SystemdService) startOrRestart(ctx context.Context, cmd string) error {
 	if _, err := exec.Command("systemctl", cmd, s.Unit).Output(); err != nil {
 		return fmt.Errorf("systemctl %s %s: %w", cmd, s.Unit, err)
 	}
-	slog.Info(fmt.Sprintf("Corrosion systemd service %sed.", cmd), "unit", s.Unit)
+	slog.Debug(fmt.Sprintf("Corrosion systemd service %sed.", cmd), "unit", s.Unit)
 
-	// Optimistically wait for the corrosion service to start and initialise the database schema before proceeding.
+	slog.Debug("Waiting for corrosion service to be ready.")
-	timer := time.NewTimer(2 * time.Second)
+	if err := WaitReady(ctx, s.DataDir); err != nil {
-	defer timer.Stop()
+		return err
-
-	select {
-	case <-timer.C:
-	case <-ctx.Done():
-		return nil
 	}
-
+	slog.Debug("Corrosion service is ready.")
-	// TODO: run a goroutine to check the status of the service and log any errors in the uncloud log.
 	s.running = true
+
 	return nil
 }
 

internal/machine/db.go

@@ -14,13 +14,13 @@ const DBFileName = "machine.db"
 func NewDB(path string) (*sqlx.DB, error) {
 	// Create the database file with 0600 permissions if it doesn't exist, or update permissions if exists.
 	if _, err := os.Stat(path); os.IsNotExist(err) {
-		file, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, 0600)
+		file, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR, 0o600)
 		if err != nil {
 			return nil, fmt.Errorf("create SQLite database '%s': %w", path, err)
 		}
 		file.Close()
 	} else {
-		if err = os.Chmod(path, 0600); err != nil {
+		if err = os.Chmod(path, 0o600); err != nil {
 			return nil, fmt.Errorf("update SQLite database permissions '%s': %w", path, err)
 		}
 	}

internal/machine/dns/resolver.go

@@ -5,12 +5,10 @@ import (
 	"fmt"
 	"log/slog"
 	"net/netip"
-	"strings"
 	"sync"
 	"time"
 
 	"github.com/psviderski/uncloud/internal/machine/store"
-	"github.com/psviderski/uncloud/pkg/api"
 )
 
 // ClusterResolver implements Resolver by tracking containers in the cluster and resolving service names
@@ -84,17 +82,13 @@ func (r *ClusterResolver) updateServiceIPs(containers []store.ContainerRecord) {
 			continue
 		}
 
-		ctr := api.ServiceContainer{Container: record.Container}
+		ctr := record.Container
 		if ctr.ServiceID() == "" || ctr.ServiceName() == "" {
 			// Container is not part of a service, skip it.
 			continue
 		}
 
-		// TODO: remove normalisation after implementing service name validation:
+		newServiceIPs[ctr.ServiceName()] = append(newServiceIPs[ctr.ServiceName()], ip)
-		//.https://github.com/psviderski/uncloud/issues/53
-		serviceName := strings.ToLower(ctr.ServiceName())
-
-		newServiceIPs[serviceName] = append(newServiceIPs[serviceName], ip)
 		// Also add the service ID as a valid lookup.
 		newServiceIPs[ctr.ServiceID()] = append(newServiceIPs[ctr.ServiceID()], ip)
 		containersCount++

internal/machine/docker/client.go

@@ -196,13 +196,27 @@ func (c *Client) RemoveContainer(ctx context.Context, id string, opts container.
 	return err
 }
 
+// PullOptions defines the options for pulling an image from a remote registry.
+// This is a copy of image.PullOptions from the Docker API without the PrivilegeFunc field that is non-serialisable.
+type PullOptions struct {
+	All bool
+	// RegistryAuth is the base64 encoded credentials for the registry.
+	RegistryAuth string
+	Platform     string
+}
+
 type PullImageMessage struct {
 	Message jsonmessage.JSONMessage
 	Err     error
 }
 
-func (c *Client) PullImage(ctx context.Context, image string) (<-chan PullImageMessage, error) {
+func (c *Client) PullImage(ctx context.Context, image string, opts PullOptions) (<-chan PullImageMessage, error) {
-	stream, err := c.grpcClient.PullImage(ctx, &pb.PullImageRequest{Image: image})
+	optsBytes, err := json.Marshal(opts)
+	if err != nil {
+		return nil, fmt.Errorf("marshal options: %w", err)
+	}
+
+	stream, err := c.grpcClient.PullImage(ctx, &pb.PullImageRequest{Image: image, Options: optsBytes})
 	if err != nil {
 		return nil, err
 	}

internal/machine/docker/controller.go

@@ -7,12 +7,11 @@ import (
 	"log/slog"
 	"time"
 
-	dockercontainer "github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/events"
 	"github.com/docker/docker/api/types/filters"
 	"github.com/docker/docker/client"
 	"github.com/psviderski/uncloud/internal/machine/store"
-	"github.com/psviderski/uncloud/pkg/api"
 )
 
 const (
@@ -24,23 +23,26 @@ const (
 	SyncInterval = 30 * time.Second
 )
 
-type Manager struct {
+// Controller monitors Docker events and synchronises service containers with the cluster store.
-	client *client.Client
+type Controller struct {
 	// machineID is the ID of the machine where the managed Docker daemon is running.
 	machineID string
+	client    *client.Client
+	service   *Service
 	store     *store.Store
 }
 
-func NewManager(client *client.Client, machineID string, store *store.Store) *Manager {
+func NewController(machineID string, service *Service, store *store.Store) *Controller {
-	return &Manager{
+	return &Controller{
-		client:    client,
 		machineID: machineID,
+		client:    service.Client,
+		service:   service,
 		store:     store,
 	}
 }
 
 // WaitDaemonReady waits for the Docker daemon to start and be ready to serve requests.
-func (m *Manager) WaitDaemonReady(ctx context.Context) error {
+func (c *Controller) WaitDaemonReady(ctx context.Context) error {
 	ticker := time.NewTicker(1 * time.Second)
 	defer ticker.Stop()
 
@@ -50,7 +52,7 @@ func (m *Manager) WaitDaemonReady(ctx context.Context) error {
 		case <-ctx.Done():
 			return ctx.Err()
 		case <-ticker.C:
-			_, err := m.client.Ping(ctx)
+			_, err := c.client.Ping(ctx)
 			if err == nil {
 				ready = true
 				break
@@ -67,7 +69,7 @@ func (m *Manager) WaitDaemonReady(ctx context.Context) error {
 	return nil
 }
 
-func (m *Manager) WatchAndSyncContainers(ctx context.Context) error {
+func (c *Controller) WatchAndSyncContainers(ctx context.Context) error {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
 	// Filter only local container events.
@@ -79,9 +81,9 @@ func (m *Manager) WatchAndSyncContainers(ctx context.Context) error {
 	}
 
 	// Subscribe to Docker events before running the initial sync to avoid missing any events.
-	eventCh, errCh := m.client.Events(ctx, opts)
+	eventCh, errCh := c.service.Client.Events(ctx, opts)
 	slog.Debug("Syncing containers to cluster store before processing Docker events.")
-	if err := m.syncContainersToStore(ctx); err != nil {
+	if err := c.syncContainersToStore(ctx); err != nil {
 		// The deferred cancel will stop the event subscription.
 		return fmt.Errorf("sync containers to cluster store: %w", err)
 	}
@@ -126,13 +128,13 @@ func (m *Manager) WatchAndSyncContainers(ctx context.Context) error {
 				"container_name", e.Actor.Attributes["name"],
 				"action", e.Action)
 
-			if err := m.syncContainersToStore(ctx); err != nil {
+			if err := c.syncContainersToStore(ctx); err != nil {
 				return fmt.Errorf("sync containers to cluster store: %w", err)
 			}
 		case <-ticker.C:
 			slog.Debug("Syncing containers to cluster store triggered by a regular interval.",
 				"interval", SyncInterval)
-			if err := m.syncContainersToStore(ctx); err != nil {
+			if err := c.syncContainersToStore(ctx); err != nil {
 				return fmt.Errorf("sync containers to cluster store: %w", err)
 			}
 		case err := <-errCh:
@@ -144,32 +146,16 @@ func (m *Manager) WatchAndSyncContainers(ctx context.Context) error {
 	}
 }
 
-func (m *Manager) syncContainersToStore(ctx context.Context) error {
+func (c *Controller) syncContainersToStore(ctx context.Context) error {
-	storeContainers, err := m.store.ListContainers(ctx, store.ListOptions{MachineIDs: []string{m.machineID}})
+	storeContainers, err := c.store.ListContainers(ctx, store.ListOptions{MachineIDs: []string{c.machineID}})
 	if err != nil {
 		return fmt.Errorf("list containers from store: %w", err)
 	}
 
-	// List only Uncloud service containers identified by their labels.
+	containers, err := c.service.ListServiceContainers(ctx, "", container.ListOptions{})
-	containerSummaries, err := m.client.ContainerList(ctx, dockercontainer.ListOptions{
-		Filters: filters.NewArgs(
-			filters.Arg("label", api.LabelServiceID),
-			filters.Arg("label", api.LabelServiceName),
-		),
-	})
 	if err != nil {
 		// TODO: mark all containers as outdated in the store.
-		return fmt.Errorf("list Docker containers: %w", err)
+		return fmt.Errorf("list service containers: %w", err)
-	}
-
-	// Inspect each container to get the full container details.
-	containers := make([]api.Container, len(containerSummaries))
-	for i, cs := range containerSummaries {
-		ctr, err := m.client.ContainerInspect(ctx, cs.ID)
-		if err != nil {
-			return fmt.Errorf("inspect container '%s': %w", cs.ID, err)
-		}
-		containers[i] = api.Container{ContainerJSON: ctr}
 	}
 
 	// Delete containers from the store that are no longer present in the Docker daemon.
@@ -189,15 +175,15 @@ func (m *Manager) syncContainersToStore(ctx context.Context) error {
 
 	var storeErr error
 	if len(deleteIDs) > 0 {
-		if err = m.store.DeleteContainers(ctx, store.DeleteOptions{IDs: deleteIDs}); err != nil {
+		if err = c.store.DeleteContainers(ctx, store.DeleteOptions{IDs: deleteIDs}); err != nil {
 			storeErr = fmt.Errorf("delete containers from store: %w", err)
 		}
 	}
 
 	// Create or update the current Docker containers in the store.
-	for _, c := range containers {
+	for _, ctr := range containers {
-		if err = m.store.CreateOrUpdateContainer(ctx, c, m.machineID); err != nil {
+		if err = c.store.CreateOrUpdateContainer(ctx, ctr, c.machineID); err != nil {
-			storeErr = errors.Join(storeErr, fmt.Errorf("create or update container %q: %w", c.ID, err))
+			storeErr = errors.Join(storeErr, fmt.Errorf("create or update container '%s': %w", ctr.ID, err))
 		}
 	}
 	return storeErr

internal/machine/docker/controller_darwin.go

@@ -0,0 +1,19 @@
+//go:build darwin
+
+package docker
+
+import (
+	"context"
+	"fmt"
+	"net/netip"
+)
+
+// EnsureUncloudNetwork is a stub for Darwin.
+func (c *Controller) EnsureUncloudNetwork(ctx context.Context, subnet netip.Prefix, dnsServer netip.Addr) error {
+	return fmt.Errorf("not supported on Darwin")
+}
+
+// Cleanup is a stub for Darwin.
+func (c *Controller) Cleanup() error {
+	return fmt.Errorf("not supported on Darwin")
+}

internal/machine/docker/controller_linux.go

@@ -0,0 +1,234 @@
+package docker
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"log/slog"
+	"net/netip"
+	"strconv"
+
+	dockercontainer "github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/api/types/filters"
+	dnetwork "github.com/docker/docker/api/types/network"
+	"github.com/docker/docker/client"
+	"github.com/docker/docker/libnetwork/iptables"
+	"github.com/psviderski/uncloud/internal/machine/dns"
+	"github.com/psviderski/uncloud/internal/machine/firewall"
+	"github.com/psviderski/uncloud/internal/machine/network"
+	"github.com/psviderski/uncloud/pkg/api"
+)
+
+// EnsureUncloudNetwork creates the Docker bridge network NetworkName with the provided machine subnet
+// if it doesn't exist. If the network exists but has a different subnet, it removes and recreates the network.
+// It also configures iptables to allow container access from the WireGuard network.
+func (c *Controller) EnsureUncloudNetwork(ctx context.Context, subnet netip.Prefix, dnsServer netip.Addr) error {
+	// Ensure the Docker network 'uncloud' is created with the correct subnet.
+	needsCreation := false
+	nw, err := c.client.NetworkInspect(ctx, NetworkName, dnetwork.InspectOptions{})
+	if err != nil {
+		if !client.IsErrNotFound(err) {
+			return fmt.Errorf("inspect Docker network '%s': %w", NetworkName, err)
+		}
+		needsCreation = true
+	} else if nw.IPAM.Config[0].Subnet != subnet.String() {
+		// Remove the Docker network if the subnet is different.
+		// It could be a leftover from a previous incomplete cleanup.
+		slog.Info(
+			"Removing Docker network with old subnet.", "name", NetworkName, "subnet", nw.IPAM.Config[0].Subnet,
+		)
+		if err = c.client.NetworkRemove(ctx, NetworkName); err != nil {
+			// It can still fail if the network is in use by a container. Leave it to the user to resolve the issue.
+			return fmt.Errorf("remove Docker network '%s': %w", NetworkName, err)
+		}
+		needsCreation = true
+	}
+
+	if needsCreation {
+		if _, err = c.client.NetworkCreate(
+			ctx, NetworkName, dnetwork.CreateOptions{
+				Driver: "bridge",
+				Scope:  "local",
+				IPAM: &dnetwork.IPAM{
+					Config: []dnetwork.IPAMConfig{
+						{
+							Subnet: subnet.String(),
+						},
+					},
+				},
+				Labels: map[string]string{
+					api.LabelManaged: "",
+				},
+				Options: map[string]string{
+					// Starting with Docker 28.2.0 (https://github.com/moby/moby/pull/49832), we have to explicitly
+					// allow direct routing from the WireGuard interface to the bridge network.
+					"com.docker.network.bridge.trusted_host_interfaces": network.WireGuardInterfaceName,
+				},
+			},
+		); err != nil {
+			return fmt.Errorf("create Docker network '%s': %w", NetworkName, err)
+		}
+		slog.Info("Docker network created.", "name", NetworkName, "subnet", subnet.String())
+
+		if nw, err = c.client.NetworkInspect(ctx, NetworkName, dnetwork.InspectOptions{}); err != nil {
+			return fmt.Errorf("inspect Docker network '%s': %w", NetworkName, err)
+		}
+	}
+
+	// Configure iptables to allow WireGuard network to access containers. The Docker daemon should have already
+	// created the DOCKER-USER chain at this point.
+	// TODO: check if this works when firewalld used instead of raw iptables. The Docker daemon has a different
+	//  code path for firewalld.
+
+	// Bridge name doesn't seem to be documented but this is the source code where it is generated:
+	// https://github.com/moby/moby/blob/v27.2.1/libnetwork/drivers/bridge/bridge_linux.go#L664
+	bridgeName := "br-" + nw.ID[:12]
+
+	if err = configureIptables(bridgeName, subnet, dnsServer); err != nil {
+		return fmt.Errorf("configure iptables for Docker network '%s': %w", NetworkName, err)
+	}
+
+	return nil
+}
+
+// configureIptables configures iptables rules for the uncloud Docker network.
+func configureIptables(bridgeName string, subnet netip.Prefix, dnsServer netip.Addr) error {
+	ipt := iptables.GetIptable(iptables.IPv4)
+	// Allow traffic from other machines and their containers through the WG mesh to the Uncloud containers
+	// on the machine.
+	wgRule := []string{
+		"--in-interface", network.WireGuardInterfaceName,
+		"--out-interface", bridgeName,
+		"-j", "ACCEPT",
+	}
+	if err := ipt.ProgramRule(iptables.Filter, firewall.DockerUserChain, iptables.Insert, wgRule); err != nil {
+		return fmt.Errorf("insert iptables rule: %w", err)
+	}
+
+	// Allow DNS queries from Uncloud containers to the embedded DNS server.
+	for _, proto := range []string{"udp", "tcp"} {
+		dnsRule := []string{
+			"--in-interface", bridgeName,
+			"--dst", dnsServer.String(),
+			"--protocol", proto,
+			"--dport", strconv.Itoa(dns.Port),
+			"-j", "ACCEPT",
+		}
+		if err := ipt.ProgramRule(iptables.Filter, firewall.UncloudInputChain, iptables.Insert, dnsRule); err != nil {
+			return fmt.Errorf("insert iptables rule: %w", err)
+		}
+	}
+
+	// Skip masquerading for the container traffic going from the uncloud Docker network through the WG mesh.
+	// https://uncloud.run/blog/connect-docker-containers-across-hosts-wireguard#step-3-configure-ip-routing
+	skipMasqueradeRule := []string{
+		"--src", subnet.String(),
+		"--out-interface", network.WireGuardInterfaceName,
+		"-j", "RETURN",
+	}
+	// Delete and reinsert the rule to ensure it's at the top of the POSTROUTING chain before the MASQUERADE rule
+	// added by Docker: POSTROUTING -s 10.210.X.0/24 ! -o br-XXX -j MASQUERADE
+	if err := ipt.ProgramRule(iptables.Nat, "POSTROUTING", iptables.Delete, skipMasqueradeRule); err != nil {
+		return fmt.Errorf("delete iptables rule: %w", err)
+	}
+	if err := ipt.ProgramRule(iptables.Nat, "POSTROUTING", iptables.Insert, skipMasqueradeRule); err != nil {
+		return fmt.Errorf("insert iptables rule: %w", err)
+	}
+
+	return nil
+}
+
+// cleanupIptables deletes the iptables rules for the uncloud Docker network.
+func cleanupIptables(bridgeName string, subnet netip.Prefix) error {
+	ipt := iptables.GetIptable(iptables.IPv4)
+	// Delete the rule allowing traffic from the WireGuard network to the Docker bridge.
+	wgRule := []string{
+		"--in-interface", network.WireGuardInterfaceName,
+		"--out-interface", bridgeName,
+		"-j", "ACCEPT",
+	}
+	if err := ipt.ProgramRule(iptables.Filter, firewall.DockerUserChain, iptables.Delete, wgRule); err != nil {
+		return fmt.Errorf("delete iptables rule: %w", err)
+	}
+
+	// Delete the rule that skips masquerading for the container traffic going from the uncloud Docker network
+	// through the WG mesh.
+	skipMasqueradeRule := []string{
+		"--src", subnet.String(),
+		"--out-interface", network.WireGuardInterfaceName,
+		"-j", "RETURN",
+	}
+	if err := ipt.ProgramRule(iptables.Nat, "POSTROUTING", iptables.Delete, skipMasqueradeRule); err != nil {
+		return fmt.Errorf("delete iptables rule: %w", err)
+	}
+
+	// Rules in uncloud-owned chains will be automatically cleaned up by the machine cleanup.
+
+	return nil
+}
+
+// Cleanup removes all uncloud-managed containers and the uncloud Docker network.
+func (c *Controller) Cleanup() error {
+	ctx := context.Background()
+	var errs []error
+
+	// Remove uncloud-managed Docker containers.
+	containers, err := c.client.ContainerList(ctx, dockercontainer.ListOptions{
+		All: true, // Include stopped containers.
+		Filters: filters.NewArgs(
+			filters.Arg("label", api.LabelManaged),
+		),
+	})
+	if err != nil {
+		errs = append(errs, fmt.Errorf("list uncloud-managed Docker containers: %w", err))
+	} else if len(containers) > 0 {
+		slog.Info("Removing uncloud-managed Docker containers.", "count", len(containers))
+		removed := 0
+
+		for _, ctr := range containers {
+			err = c.client.ContainerStop(ctx, ctr.ID, dockercontainer.StopOptions{})
+			if err != nil && !client.IsErrNotFound(err) {
+				errs = append(errs, fmt.Errorf("stop container '%s': %w", ctr.ID, err))
+			}
+
+			err = c.client.ContainerRemove(ctx, ctr.ID, dockercontainer.RemoveOptions{
+				// Remove anonymous volumes created by the container.
+				RemoveVolumes: true,
+			})
+			if err == nil {
+				removed++
+			} else if !client.IsErrNotFound(err) {
+				errs = append(errs, fmt.Errorf("remove container '%s': %w", ctr.ID, err))
+			}
+		}
+		slog.Info("Removed uncloud-managed Docker containers.", "count", removed)
+	}
+
+	// Remove the uncloud Docker network and related iptables rules.
+	nw, err := c.client.NetworkInspect(ctx, NetworkName, dnetwork.InspectOptions{})
+	if err == nil {
+		bridgeName := "br-" + nw.ID[:12]
+		var subnet netip.Prefix
+		if len(nw.IPAM.Config) > 0 {
+			subnet, _ = netip.ParsePrefix(nw.IPAM.Config[0].Subnet)
+		}
+
+		if subnet.IsValid() {
+			if err = cleanupIptables(bridgeName, subnet); err != nil {
+				errs = append(errs, fmt.Errorf("cleanup iptables for Docker network '%s': %w", NetworkName, err))
+			} else {
+				slog.Info("Cleaned up iptables rules for Docker network.", "name", NetworkName, "bridge", bridgeName)
+			}
+		}
+
+		if err = c.client.NetworkRemove(ctx, NetworkName); err == nil {
+			slog.Info("Docker network removed.", "name", NetworkName)
+		} else if !client.IsErrNotFound(err) {
+			errs = append(errs, fmt.Errorf("remove Docker network '%s': %w", NetworkName, err))
+		}
+	} else if !client.IsErrNotFound(err) {
+		errs = append(errs, fmt.Errorf("inspect Docker network '%s': %w", NetworkName, err))
+	}
+
+	return errors.Join(errs...)
+}

internal/machine/docker/manager_darwin.go

@@ -1,14 +0,0 @@
-//go:build darwin
-
-package docker
-
-import (
-	"context"
-	"fmt"
-	"net/netip"
-)
-
-// EnsureUncloudNetwork is a stub for Darwin.
-func (m *Manager) EnsureUncloudNetwork(ctx context.Context, subnet netip.Prefix, dnsServer netip.Addr) error {
-	return fmt.Errorf("not supported on Darwin")
-}

internal/machine/docker/manager_linux.go

@@ -1,107 +0,0 @@
-package docker
-
-import (
-	"context"
-	"fmt"
-	"log/slog"
-	"net/netip"
-	"strconv"
-
-	dnetwork "github.com/docker/docker/api/types/network"
-	"github.com/docker/docker/client"
-	"github.com/docker/docker/libnetwork/iptables"
-	"github.com/psviderski/uncloud/internal/machine/dns"
-	"github.com/psviderski/uncloud/internal/machine/firewall"
-	"github.com/psviderski/uncloud/internal/machine/network"
-)
-
-// EnsureUncloudNetwork creates the Docker bridge network NetworkName with the provided machine subnet
-// if it doesn't exist. If the network exists but has a different subnet, it removes and recreates the network.
-// It also configures iptables to allow container access from the WireGuard network.
-func (m *Manager) EnsureUncloudNetwork(ctx context.Context, subnet netip.Prefix, dnsServer netip.Addr) error {
-	// Ensure the Docker network 'uncloud' is created with the correct subnet.
-	needsCreation := false
-	nw, err := m.client.NetworkInspect(ctx, NetworkName, dnetwork.InspectOptions{})
-	if err != nil {
-		if !client.IsErrNotFound(err) {
-			return fmt.Errorf("inspect Docker network '%s': %w", NetworkName, err)
-		}
-		needsCreation = true
-	} else if nw.IPAM.Config[0].Subnet != subnet.String() {
-		// Remove the Docker network if the subnet is different.
-		// It could be a leftover from a previous incomplete cleanup.
-		slog.Info(
-			"Removing Docker network with old subnet.", "name", NetworkName, "subnet", nw.IPAM.Config[0].Subnet,
-		)
-		if err = m.client.NetworkRemove(ctx, NetworkName); err != nil {
-			// It can still fail if the network is in use by a container. Leave it to the user to resolve the issue.
-			return fmt.Errorf("remove Docker network '%s': %w", NetworkName, err)
-		}
-		needsCreation = true
-	}
-
-	if needsCreation {
-		if _, err = m.client.NetworkCreate(
-			ctx, NetworkName, dnetwork.CreateOptions{
-				Driver: "bridge",
-				Scope:  "local",
-				IPAM: &dnetwork.IPAM{
-					Config: []dnetwork.IPAMConfig{
-						{
-							Subnet: subnet.String(),
-						},
-					},
-				},
-			},
-		); err != nil {
-			return fmt.Errorf("create Docker network '%s': %w", NetworkName, err)
-		}
-		slog.Info("Docker network created.", "name", NetworkName, "subnet", subnet.String())
-
-		if nw, err = m.client.NetworkInspect(ctx, NetworkName, dnetwork.InspectOptions{}); err != nil {
-			return fmt.Errorf("inspect Docker network '%s': %w", NetworkName, err)
-		}
-	}
-
-	// Configure iptables to allow WireGuard network to access containers. The Docker daemon should have already
-	// created the DOCKER-USER chain at this point.
-	// TODO: check if this works when firewalld used instead of raw iptables. The Docker daemon has a different
-	//  code path for firewalld.
-
-	// Bridge name doesn't seem to be documented but this is the source code where it is generated:
-	// https://github.com/moby/moby/blob/v27.2.1/libnetwork/drivers/bridge/bridge_linux.go#L664
-	bridgeName := "br-" + nw.ID[:12]
-
-	if err = configureIptables(bridgeName, dnsServer); err != nil {
-		return fmt.Errorf("configure iptables for Docker network '%s': %w", NetworkName, err)
-	}
-
-	return nil
-}
-
-// configureIptables configures iptables rules for the uncloud Docker network.
-func configureIptables(bridgeName string, dnsServer netip.Addr) error {
-	ipt := iptables.GetIptable(iptables.IPv4)
-	// Allow traffic from other machines and their containers through the WG mesh to the Uncloud containers
-	// on the machine.
-	wgRule := []string{"--in-interface", network.WireGuardInterfaceName, "--out-interface", bridgeName, "-j", "ACCEPT"}
-	if err := ipt.ProgramRule(iptables.Filter, firewall.DockerUserChain, iptables.Insert, wgRule); err != nil {
-		return fmt.Errorf("insert iptables rule: %w", err)
-	}
-
-	// Allow DNS queries from Uncloud containers to the embedded DNS server.
-	for _, proto := range []string{"udp", "tcp"} {
-		dnsRule := []string{
-			"--in-interface", bridgeName,
-			"--dst", dnsServer.String(),
-			"--protocol", proto,
-			"--dport", strconv.Itoa(dns.Port),
-			"-j", "ACCEPT",
-		}
-		if err := ipt.ProgramRule(iptables.Filter, firewall.UncloudInputChain, iptables.Insert, dnsRule); err != nil {
-			return fmt.Errorf("insert iptables rule: %w", err)
-		}
-	}
-
-	return nil
-}

internal/machine/docker/server.go

@@ -2,19 +2,21 @@ package docker
 
 import (
 	"context"
-	"database/sql"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"log/slog"
 	"net/netip"
+	"os"
 	"regexp"
 	"slices"
 	"strconv"
 	"strings"
 
 	"github.com/distribution/reference"
+	dockercommand "github.com/docker/cli/cli/command"
+	dockerconfig "github.com/docker/cli/cli/config"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/filters"
@@ -45,20 +47,49 @@ var fullDockerIDRegex = regexp.MustCompile(`^[a-f0-9]{64}$`)
 // Server implements the gRPC Docker service that proxies requests to the Docker daemon.
 type Server struct {
 	pb.UnimplementedDockerServer
-	client *client.Client
+	client  *client.Client
-	db     *sqlx.DB
+	service *Service
+	db      *sqlx.DB
 	// internalDNSIP is a function that returns the IP address of the internal DNS server. It may return an empty
 	// address if the address is unknown (e.g. when the machine is not initialised yet).
 	internalDNSIP func() netip.Addr
+	// networkReady is a function that returns true if the Docker network is ready for containers.
+	networkReady func() bool
+	// waitForNetworkReady is a function that waits for the Docker network to be ready for containers.
+	waitForNetworkReady func(ctx context.Context) error
 }
 
-// NewServer creates a new Docker gRPC server with the provided Docker client.
+// ServerOption configures the Docker server.
-func NewServer(cli *client.Client, db *sqlx.DB, internalDNSIP func() netip.Addr) *Server {
+type ServerOption func(*Server)
-	return &Server{
+
-		client:        cli,
+// WithNetworkReady sets the network readiness check function.
+func WithNetworkReady(networkReady func() bool) ServerOption {
+	return func(s *Server) {
+		s.networkReady = networkReady
+	}
+}
+
+// WithWaitForNetworkReady sets the network readiness wait function.
+func WithWaitForNetworkReady(waitForNetworkReady func(ctx context.Context) error) ServerOption {
+	return func(s *Server) {
+		s.waitForNetworkReady = waitForNetworkReady
+	}
+}
+
+// NewServer creates a new Docker gRPC server with the provided Docker service.
+func NewServer(service *Service, db *sqlx.DB, internalDNSIP func() netip.Addr, opts ...ServerOption) *Server {
+	s := &Server{
+		client:        service.Client,
+		service:       service,
 		db:            db,
 		internalDNSIP: internalDNSIP,
 	}
+
+	for _, opt := range opts {
+		opt(s)
+	}
+
+	return s
 }
 
 // CreateContainer creates a new container based on the given configuration.
@@ -118,6 +149,15 @@ func (s *Server) InspectContainer(ctx context.Context, req *pb.InspectContainerR
 
 // StartContainer starts a container with the given ID and options.
 func (s *Server) StartContainer(ctx context.Context, req *pb.StartContainerRequest) (*emptypb.Empty, error) {
+	// Wait for Docker network to be ready before starting the container
+	if s.waitForNetworkReady != nil {
+		if err := s.waitForNetworkReady(ctx); err != nil {
+			return nil, status.Errorf(codes.Unavailable, "Docker network not ready: %v", err)
+		}
+	} else if s.networkReady != nil && !s.networkReady() {
+		return nil, status.Errorf(codes.Unavailable, "Docker network not ready")
+	}
+
 	var opts container.StartOptions
 	if len(req.Options) > 0 {
 		if err := json.Unmarshal(req.Options, &opts); err != nil {
@@ -229,7 +269,6 @@ func (s *Server) RemoveContainer(ctx context.Context, req *pb.RemoveContainerReq
 func (s *Server) PullImage(req *pb.PullImageRequest, stream grpc.ServerStreamingServer[pb.JSONMessage]) error {
 	ctx := stream.Context()
 
-	// TODO: replace with another JSON serializable type (PullOptions.PrivilegeFunc is not serializable).
 	var opts image.PullOptions
 	if len(req.Options) > 0 {
 		if err := json.Unmarshal(req.Options, &opts); err != nil {
@@ -237,6 +276,14 @@ func (s *Server) PullImage(req *pb.PullImageRequest, stream grpc.ServerStreaming
 		}
 	}
 
+	if opts.RegistryAuth == "" {
+		// Try to retrieve the authentication token for the image from the default local Docker config file.
+		dockerConfig := dockerconfig.LoadDefaultConfigFile(os.Stderr)
+		if encodedAuth, err := dockercommand.RetrieveAuthTokenFromImage(dockerConfig, req.Image); err == nil {
+			opts.RegistryAuth = encodedAuth
+		}
+	}
+
 	respBody, err := s.client.ImagePull(ctx, req.Image, opts)
 	if err != nil {
 		return status.Errorf(codes.Internal, err.Error())
@@ -419,6 +466,7 @@ func (s *Server) RemoveVolume(ctx context.Context, req *pb.RemoveVolumeRequest)
 }
 
 // CreateServiceContainer creates a new container for the service with the given specifications.
+// TODO: move the main logic to the Docker service and remove db dependency from the server.
 func (s *Server) CreateServiceContainer(
 	ctx context.Context, req *pb.CreateServiceContainerRequest,
 ) (*pb.CreateContainerResponse, error) {
@@ -510,10 +558,10 @@ func (s *Server) CreateServiceContainer(
 			Memory:            spec.Container.Resources.Memory,
 			MemoryReservation: spec.Container.Resources.MemoryReservation,
 		},
-		// Always restart service containers if they exit or a machine restarts.
+		// Restart service containers if they exit or a machine restarts unless they are explicitly stopped.
 		// For one-off containers and batch jobs we plan to use a different service type/mode.
 		RestartPolicy: container.RestartPolicy{
-			Name: container.RestartPolicyAlways,
+			Name: container.RestartPolicyUnlessStopped,
 		},
 	}
 
@@ -673,7 +721,7 @@ func (s *Server) verifyDockerVolumesExist(ctx context.Context, mounts []mount.Mo
 func (s *Server) InspectServiceContainer(
 	ctx context.Context, req *pb.InspectContainerRequest,
 ) (*pb.ServiceContainer, error) {
-	ctr, err := s.client.ContainerInspect(ctx, req.Id)
+	serviceCtr, err := s.service.InspectServiceContainer(ctx, req.Id)
 	if err != nil {
 		if client.IsErrNotFound(err) {
 			return nil, status.Errorf(codes.NotFound, err.Error())
@@ -681,19 +729,14 @@ func (s *Server) InspectServiceContainer(
 		return nil, status.Errorf(codes.Internal, err.Error())
 	}
 
-	ctrBytes, err := json.Marshal(ctr)
+	ctrBytes, err := json.Marshal(serviceCtr.Container)
 	if err != nil {
-		return nil, status.Errorf(codes.Internal, "marshal response: %v", err)
+		return nil, status.Errorf(codes.Internal, "marshal container: %v", err)
 	}
 
-	var specBytes []byte
+	specBytes, err := json.Marshal(serviceCtr.ServiceSpec)
-	err = s.db.QueryRowContext(ctx, `SELECT service_spec FROM containers WHERE id = $1`, ctr.ID).Scan(&specBytes)
 	if err != nil {
-		if errors.Is(err, sql.ErrNoRows) {
+		return nil, status.Errorf(codes.Internal, "marshal service spec: %v", err)
-			return nil, status.Errorf(codes.NotFound, "service spec not found for container: '%s'", ctr.ID)
-		}
-		return nil, status.Errorf(codes.Internal, "get service spec for container '%s' from machine database: %v",
-			ctr.ID, err)
 	}
 
 	return &pb.ServiceContainer{
@@ -725,54 +768,28 @@ func (s *Server) ListServiceContainers(
 				return nil, status.Errorf(codes.InvalidArgument, "unmarshal filters: %v", err)
 			}
 			opts.Filters = args
-		} else {
-			opts.Filters = filters.NewArgs()
 		}
 	}
-	// Only uncloud-managed containers that belong to some service.
-	opts.Filters.Add("label", api.LabelServiceID)
-	opts.Filters.Add("label", api.LabelManaged)
 
-	containerSummaries, err := s.client.ContainerList(ctx, opts)
+	containers, err := s.service.ListServiceContainers(ctx, req.ServiceId, opts)
 	if err != nil {
 		return nil, status.Error(codes.Internal, err.Error())
 	}
 
-	containers := make([]*pb.ServiceContainer, 0, len(containerSummaries))
+	// Convert to protobuf format.
-	for _, cs := range containerSummaries {
+	pbContainers := make([]*pb.ServiceContainer, 0, len(containers))
-		if req.ServiceId != "" &&
+	for _, ctr := range containers {
-			cs.Labels[api.LabelServiceID] != req.ServiceId && cs.Labels[api.LabelServiceName] != req.ServiceId {
+		ctrBytes, err := json.Marshal(ctr.Container)
-			continue
-		}
-
-		ctr, err := s.client.ContainerInspect(ctx, cs.ID)
-		if err != nil {
-			if client.IsErrNotFound(err) {
-				// The listed container may have been removed while we were inspecting other containers.
-				continue
-			}
-			return nil, status.Errorf(codes.Internal, "inspect container %s: %v", cs.ID, err)
-		}
-		ctrBytes, err := json.Marshal(ctr)
 		if err != nil {
 			return nil, status.Errorf(codes.Internal, "marshal container: %v", err)
 		}
 
-		var specBytes []byte
+		specBytes, err := json.Marshal(ctr.ServiceSpec)
-		err = s.db.QueryRowContext(ctx, `SELECT service_spec FROM containers WHERE id = $1`, ctr.ID).Scan(&specBytes)
 		if err != nil {
-			if errors.Is(err, sql.ErrNoRows) {
+			return nil, status.Errorf(codes.Internal, "marshal service spec: %v", err)
-				// If this happens, there is a bug in the code, or someone manually removed the container from the DB,
-				// or created a managed container out of band.
-				slog.Error("Service container not found in machine database.", "id", ctr.ID)
-				// Just ignore such a container to not fail the list operation as it's not easily recoverable.
-				continue
-			}
-			return nil, status.Errorf(codes.Internal, "get service spec for container '%s' from machine database: %v",
-				ctr.ID, err)
 		}
 
-		containers = append(containers, &pb.ServiceContainer{
+		pbContainers = append(pbContainers, &pb.ServiceContainer{
 			Container:   ctrBytes,
 			ServiceSpec: specBytes,
 		})
@@ -781,7 +798,7 @@ func (s *Server) ListServiceContainers(
 	return &pb.ListServiceContainersResponse{
 		Messages: []*pb.MachineServiceContainers{
 			{
-				Containers: containers,
+				Containers: pbContainers,
 			},
 		},
 	}, nil

internal/machine/docker/service.go

@@ -0,0 +1,103 @@
+package docker
+
+import (
+	"context"
+	"database/sql"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"log/slog"
+
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/api/types/filters"
+	"github.com/docker/docker/client"
+	"github.com/jmoiron/sqlx"
+	"github.com/psviderski/uncloud/pkg/api"
+)
+
+// Service provides higher-level Docker operations that extends Docker API with Uncloud-specific data
+// from the machine database.
+type Service struct {
+	Client *client.Client
+	db     *sqlx.DB
+}
+
+// NewService creates a new Docker service instance.
+func NewService(client *client.Client, db *sqlx.DB) *Service {
+	return &Service{
+		Client: client,
+		db:     db,
+	}
+}
+
+// InspectServiceContainer inspects a Docker container and retrieves its associated ServiceSpec
+// from the machine database, returning a complete ServiceContainer.
+func (s *Service) InspectServiceContainer(ctx context.Context, nameOrID string) (api.ServiceContainer, error) {
+	var serviceCtr api.ServiceContainer
+
+	ctr, err := s.Client.ContainerInspect(ctx, nameOrID)
+	if err != nil {
+		return serviceCtr, err
+	}
+	if _, ok := ctr.Config.Labels[api.LabelManaged]; !ok {
+		return serviceCtr, fmt.Errorf("container '%s' is not managed by Uncloud", nameOrID)
+	}
+
+	serviceCtr.Container = api.Container{ContainerJSON: ctr}
+
+	// Retrieve ServiceSpec from the machine database.
+	var specBytes []byte
+	err = s.db.QueryRowContext(ctx, `SELECT service_spec FROM containers WHERE id = $1`, ctr.ID).Scan(&specBytes)
+	if err != nil {
+		if errors.Is(err, sql.ErrNoRows) {
+			// If this happens, there is a bug in the code, or someone manually removed the container from the DB,
+			// or created a managed container out of band or by previous uncloud installation.
+			return serviceCtr, fmt.Errorf("service spec not found for container '%s' in machine DB", ctr.ID)
+		}
+		return serviceCtr, fmt.Errorf("get service spec for container '%s' from machine DB: %w", ctr.ID, err)
+	}
+
+	if err = json.Unmarshal(specBytes, &serviceCtr.ServiceSpec); err != nil {
+		return serviceCtr, fmt.Errorf("unmarshal service spec for container '%s': %w", ctr.ID, err)
+	}
+
+	return serviceCtr, nil
+}
+
+// ListServiceContainers lists Docker containers that belong to the service with the given name or ID.
+// If serviceIDOrName is empty, all service containers are returned. The opts parameter allows additional filtering.
+func (s *Service) ListServiceContainers(
+	ctx context.Context, serviceNameOrID string, opts container.ListOptions,
+) ([]api.ServiceContainer, error) {
+	if opts.Filters.Len() == 0 {
+		opts.Filters = filters.NewArgs()
+	}
+	// Add labels to existing filters to list only Uncloud-managed service containers.
+	opts.Filters.Add("label", api.LabelServiceID)
+	opts.Filters.Add("label", api.LabelManaged)
+
+	containerSummaries, err := s.Client.ContainerList(ctx, opts)
+	if err != nil {
+		return nil, err
+	}
+
+	var containers []api.ServiceContainer
+	for _, cs := range containerSummaries {
+		// Filter by service name or ID if provided.
+		if serviceNameOrID != "" &&
+			cs.Labels[api.LabelServiceID] != serviceNameOrID &&
+			cs.Labels[api.LabelServiceName] != serviceNameOrID {
+			continue
+		}
+
+		ctr, err := s.InspectServiceContainer(ctx, cs.ID)
+		if err != nil {
+			// Log error but continue with other containers.
+			slog.Error("Failed to inspect service container.", "service", serviceNameOrID, "id", cs.ID, "err", err)
+			continue
+		}
+		containers = append(containers, ctr)
+	}
+
+	return containers, nil
+}

internal/machine/firewall/iptables_darwin.go

@@ -6,3 +6,8 @@ import "fmt"
 func ConfigureIptablesChains() error {
 	return fmt.Errorf("not supported on Darwin")
 }
+
+// CleanupIptablesChains is a stub for Darwin.
+func CleanupIptablesChains() error {
+	return fmt.Errorf("not supported on Darwin")
+}

internal/machine/firewall/iptables_linux.go

@@ -2,10 +2,13 @@ package firewall
 
 import (
 	"fmt"
+	"log/slog"
 	"strconv"
 	"strings"
 
 	"github.com/docker/docker/libnetwork/iptables"
+	"github.com/psviderski/uncloud/internal/machine/constants"
+	"github.com/psviderski/uncloud/internal/machine/corroservice"
 	"github.com/psviderski/uncloud/internal/machine/network"
 )
 
@@ -16,59 +19,145 @@ const (
 
 // ConfigureIptablesChains sets up custom iptables chains and initial firewall rules for Uncloud networking.
 func ConfigureIptablesChains() error {
-	// Ensure iptables UNCLOUD-INPUT chain with a RETURN rule exists. All existing rules are flushed.
+	if err := createIptablesChains(); err != nil {
-	ipt := iptables.GetIptable(iptables.IPv4)
+		return err
-	if _, err := ipt.NewChain(UncloudInputChain, iptables.Filter); err != nil {
-		return fmt.Errorf("create iptables chain '%s': %w", UncloudInputChain, err)
-	}
-	if err := ipt.RawCombinedOutput("-t", string(iptables.Filter), "-F", UncloudInputChain); err != nil {
-		return fmt.Errorf("flush iptables chain '%s': %w", UncloudInputChain, err)
-	}
-	if err := ipt.AddReturnRule(UncloudInputChain); err != nil {
-		return fmt.Errorf("add the RETURN rule for iptables chain '%s': %w", UncloudInputChain, err)
 	}
 
-	// Ensure the main iptables INPUT chain has a jump rule to the UNCLOUD-INPUT chain before any DROP/REJECT rules.
+	ipt4 := iptables.GetIptable(iptables.IPv4)
-	jumpRule := []string{"-m", "comment", "--comment", "Uncloud-managed", "-j", UncloudInputChain}
+	ipt6 := iptables.GetIptable(iptables.IPv6)
-	if !ipt.Exists(iptables.Filter, "INPUT", jumpRule...) {
-		// Look for the first DROP/REJECT rule in the INPUT chain.
-		out, err := ipt.Raw("-t", string(iptables.Filter), "-L", "INPUT", "--line-numbers")
-		if err != nil {
-			return fmt.Errorf("get iptables rules for chain '%s': %w", UncloudInputChain, err)
-		}
-
-		firstRejectRuleNum := 0
-		for _, line := range strings.Split(string(out), "\n") {
-			fields := strings.Fields(line)
-			if len(fields) < 2 {
-				continue
-			}
-			if fields[1] == "DROP" || fields[1] == "REJECT" {
-				if ruleNum, err := strconv.Atoi(fields[0]); err == nil {
-					firstRejectRuleNum = ruleNum
-					break
-				}
-			}
-		}
-
-		var addJumpRule []string
-		if firstRejectRuleNum > 0 {
-			addJumpRule = append([]string{"-t", string(iptables.Filter), "-I", "INPUT", strconv.Itoa(firstRejectRuleNum)},
-				jumpRule...)
-		} else {
-			addJumpRule = append([]string{"-t", string(iptables.Filter), "-A", "INPUT"}, jumpRule...)
-		}
-		if err = ipt.RawCombinedOutput(addJumpRule...); err != nil {
-			return fmt.Errorf("add iptables rule '%s': %w", strings.Join(addJumpRule, " "), err)
-		}
-	}
 
 	// Allow WireGuard traffic to the machine.
 	acceptWireGuardRule := []string{"-p", "udp", "--dport", strconv.Itoa(network.WireGuardPort), "-j", "ACCEPT"}
-	err := ipt.ProgramRule(iptables.Filter, UncloudInputChain, iptables.Insert, acceptWireGuardRule)
+	err := ipt4.ProgramRule(iptables.Filter, UncloudInputChain, iptables.Insert, acceptWireGuardRule)
 	if err != nil {
 		return fmt.Errorf("insert iptables rule '%s': %w", strings.Join(acceptWireGuardRule, " "), err)
 	}
 
+	// Allow cluster machines to access Machine API via the management IPv6 WireGuard network.
+	acceptMachineAPIRule := []string{
+		"-i", network.WireGuardInterfaceName,
+		"-s", "fdcc::/16",
+		"-p", "tcp",
+		"--dport", strconv.Itoa(constants.MachineAPIPort),
+		"-j", "ACCEPT",
+	}
+	// Allow Corrosion gossip traffic from cluster machines via the management IPv6 WireGuard network.
+	acceptCorrosionGossipRule := []string{
+		"-i", network.WireGuardInterfaceName,
+		"-s", "fdcc::/16",
+		"-p", "udp",
+		"--dport", strconv.Itoa(corroservice.DefaultGossipPort),
+		"-j", "ACCEPT",
+	}
+	for _, rule := range [][]string{acceptMachineAPIRule, acceptCorrosionGossipRule} {
+		if err = ipt6.ProgramRule(iptables.Filter, UncloudInputChain, iptables.Insert, rule); err != nil {
+			return fmt.Errorf("insert ip6tables rule '%s': %w", strings.Join(rule, " "), err)
+		}
+	}
+
+	return nil
+}
+
+// createIptablesChains ensures UNCLOUD-INPUT iptables and ip6tables chains exist and
+// there are jump rules from the main INPUT chains.
+func createIptablesChains() error {
+	ipt4 := iptables.GetIptable(iptables.IPv4)
+	ipt6 := iptables.GetIptable(iptables.IPv6)
+
+	for i, ipt := range []*iptables.IPTable{ipt4, ipt6} {
+		iptBin := "iptables"
+		if i == 1 {
+			iptBin = "ip6tables"
+		}
+
+		// Ensure UNCLOUD-INPUT chain exists. All existing rules are flushed.
+		if _, err := ipt.NewChain(UncloudInputChain, iptables.Filter); err != nil {
+			return fmt.Errorf("create %s chain '%s': %w", iptBin, UncloudInputChain, err)
+		}
+		if err := ipt.RawCombinedOutput("-t", string(iptables.Filter), "-F", UncloudInputChain); err != nil {
+			return fmt.Errorf("flush %s chain '%s': %w", iptBin, UncloudInputChain, err)
+		}
+
+		// Ensure the main INPUT chain has a jump rule to the UNCLOUD-INPUT chain before any DROP/REJECT rules.
+		jumpRule := []string{"-m", "comment", "--comment", "Uncloud-managed", "-j", UncloudInputChain}
+		if !ipt.Exists(iptables.Filter, "INPUT", jumpRule...) {
+			// Look for the first DROP/REJECT rule in the INPUT chain.
+			out, err := ipt.Raw("-t", string(iptables.Filter), "-L", "INPUT", "--line-numbers")
+			if err != nil {
+				return fmt.Errorf("get %s rules for chain '%s': %w", iptBin, UncloudInputChain, err)
+			}
+
+			firstRejectRuleNum := 0
+			for _, line := range strings.Split(string(out), "\n") {
+				fields := strings.Fields(line)
+				if len(fields) < 2 {
+					continue
+				}
+				if fields[1] == "DROP" || fields[1] == "REJECT" {
+					if ruleNum, err := strconv.Atoi(fields[0]); err == nil {
+						firstRejectRuleNum = ruleNum
+						break
+					}
+				}
+			}
+
+			var addJumpRule []string
+			if firstRejectRuleNum > 0 {
+				addJumpRule = append([]string{
+					"-t", string(iptables.Filter),
+					"-I", "INPUT",
+					strconv.Itoa(firstRejectRuleNum),
+				}, jumpRule...)
+			} else {
+				addJumpRule = append([]string{
+					"-t", string(iptables.Filter),
+					"-A", "INPUT",
+				}, jumpRule...)
+			}
+			if err = ipt.RawCombinedOutput(addJumpRule...); err != nil {
+				return fmt.Errorf("add %s rule '%s': %w", iptBin, strings.Join(addJumpRule, " "), err)
+			}
+		}
+	}
+
+	return nil
+}
+
+// CleanupIptablesChains removes the custom iptables chains and rules created by ConfigureIptablesChains.
+func CleanupIptablesChains() error {
+	ipt4 := iptables.GetIptable(iptables.IPv4)
+	ipt6 := iptables.GetIptable(iptables.IPv6)
+
+	for i, ipt := range []*iptables.IPTable{ipt4, ipt6} {
+		iptBin := "iptables"
+		if i == 1 {
+			iptBin = "ip6tables"
+		}
+
+		// First, remove the jump rule from INPUT chain to UNCLOUD-INPUT.
+		jumpRule := []string{"-m", "comment", "--comment", "Uncloud-managed", "-j", UncloudInputChain}
+		if err := ipt.ProgramRule(iptables.Filter, "INPUT", iptables.Delete, jumpRule); err != nil {
+			return fmt.Errorf("delete %s jump rule from INPUT: %w", iptBin, err)
+		}
+
+		// Flush all rules from UNCLOUD-INPUT chain as it must be empty before deletion.
+		if err := ipt.RawCombinedOutput("-t", string(iptables.Filter), "-F", UncloudInputChain); err != nil {
+			// Chain might not exist which is fine.
+			if !strings.Contains(err.Error(), "No chain") {
+				return fmt.Errorf("flush %s chain '%s': %w", iptBin, UncloudInputChain, err)
+			}
+		}
+
+		// Delete the UNCLOUD-INPUT chain.
+		if err := ipt.RawCombinedOutput("-t", string(iptables.Filter), "-X", UncloudInputChain); err != nil {
+			// Chain might not exist which is fine.
+			if !strings.Contains(err.Error(), "No chain") {
+				return fmt.Errorf("delete %s chain '%s': %w", iptBin, UncloudInputChain, err)
+			}
+		} else {
+			slog.Info(fmt.Sprintf("Deleted %s chain.", iptBin), "chain", UncloudInputChain)
+		}
+	}
+
 	return nil
 }

internal/machine/machine.go

@@ -13,6 +13,7 @@ import (
 	"path/filepath"
 	"slices"
 	"strconv"
+	"sync"
 
 	"github.com/docker/docker/client"
 	"github.com/docker/go-connections/sockets"
@@ -23,12 +24,12 @@ import (
 	apiproxy "github.com/psviderski/uncloud/internal/machine/api/proxy"
 	"github.com/psviderski/uncloud/internal/machine/caddyconfig"
 	"github.com/psviderski/uncloud/internal/machine/cluster"
+	"github.com/psviderski/uncloud/internal/machine/constants"
 	"github.com/psviderski/uncloud/internal/machine/corroservice"
 	"github.com/psviderski/uncloud/internal/machine/dns"
 	machinedocker "github.com/psviderski/uncloud/internal/machine/docker"
 	"github.com/psviderski/uncloud/internal/machine/network"
 	"github.com/psviderski/uncloud/internal/machine/store"
-	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/siderolabs/grpc-proxy/proxy"
 	"golang.org/x/sync/errgroup"
 	"google.golang.org/grpc"
@@ -41,6 +42,9 @@ const (
 	DefaultMachineSockPath = "/run/uncloud/machine.sock"
 	DefaultUncloudSockPath = "/run/uncloud/uncloud.sock"
 	DefaultSockGroup       = "uncloud"
+	// DefaultCaddyAdminSockPath is the default path to the Caddy admin socket for validating the generated Caddy
+	// reverse proxy configuration.
+	DefaultCaddyAdminSockPath = "/run/uncloud/caddy/admin.sock"
 )
 
 type Config struct {
@@ -60,9 +64,9 @@ type Config struct {
 	// DockerClient manages system and user containers using the local Docker daemon.
 	DockerClient *client.Client
 
-	// CaddyConfigPath specifies where the machine generates the Caddy reverse proxy configuration file for routing
+	// CaddyConfigDir specifies the directory where the machine generates the Caddy reverse proxy configuration file
-	// external traffic to service containers across the internal network. Default is DataDir/caddy/caddy.json.
+	// for routing external traffic to service containers across the internal network. Default is DataDir/caddy.
-	CaddyConfigPath string
+	CaddyConfigDir string
 	// DNSUpstreams specifies the upstream DNS servers for the embedded internal DNS server.
 	DNSUpstreams []netip.AddrPort
 }
@@ -127,8 +131,8 @@ func (c *Config) SetDefaults() (*Config, error) {
 		}
 	}
 
-	if cfg.CaddyConfigPath == "" {
+	if cfg.CaddyConfigDir == "" {
-		cfg.CaddyConfigPath = filepath.Join(cfg.DataDir, "caddy", "caddy.json")
+		cfg.CaddyConfigDir = filepath.Join(cfg.DataDir, "caddy")
 	}
 
 	return &cfg, nil
@@ -149,11 +153,20 @@ type Machine struct {
 	started chan struct{}
 	// initialised is signalled when the machine is configured as a member of a cluster.
 	initialised chan struct{}
+	// networkReady is signalled when the Docker network is configured and ready for containers.
+	networkReady chan struct{}
+	// resetting is true when the machine is being reset.
+	resetting bool
+	// stop cancels the Run method context to stop the machine gracefully.
+	stop func()
 
+	clusterCtrl *clusterController
 	// store is the cluster store backed by a distributed Corrosion database.
 	store   *store.Store
 	cluster *cluster.Cluster
-	docker  *machinedocker.Server
+	// dockerService provides high-level operations for managing Docker containers.
+	dockerService *machinedocker.Service
+	dockerServer  *machinedocker.Server
 	// localMachineServer is the gRPC server for the machine API listening on the local Unix socket.
 	localMachineServer *grpc.Server
 
@@ -163,6 +176,9 @@ type Machine struct {
 	// It proxies requests to the local or remote machine API servers depending on the request targets
 	// and aggregates responses.
 	localProxyServer *grpc.Server
+
+	// mu protects the Machine from concurrent reads and writes.
+	mu sync.RWMutex
 }
 
 func NewMachine(config *Config) (*Machine, error) {
@@ -210,19 +226,16 @@ func NewMachine(config *Config) (*Machine, error) {
 	c := cluster.NewCluster(corroStore, corroAdmin)
 
 	// Init dependencies for a gRPC Docker server that proxies requests to the local Docker daemon.
-	dockerCli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
-	if err != nil {
-		return nil, fmt.Errorf("create Docker client: %w", err)
-	}
-
 	dbFilePath := filepath.Join(config.DataDir, DBFileName)
 	db, err := NewDB(dbFilePath)
 	if err != nil {
 		return nil, fmt.Errorf("init machine database: %w", err)
 	}
 
+	dockerService := machinedocker.NewService(config.DockerClient, db)
+
 	// Init a local gRPC proxy server that proxies requests to the local or remote machine API servers.
-	proxyDirector := apiproxy.NewDirector(config.MachineSockPath, APIPort)
+	proxyDirector := apiproxy.NewDirector(config.MachineSockPath, constants.MachineAPIPort)
 	localProxyServer := grpc.NewServer(
 		grpc.ForceServerCodecV2(proxy.Codec()),
 		grpc.UnknownServiceHandler(
@@ -235,8 +248,10 @@ func NewMachine(config *Config) (*Machine, error) {
 		state:            state,
 		started:          make(chan struct{}),
 		initialised:      make(chan struct{}, 1),
+		networkReady:     make(chan struct{}),
 		store:            corroStore,
 		cluster:          c,
+		dockerService:    dockerService,
 		localProxyServer: localProxyServer,
 		proxyDirector:    proxyDirector,
 	}
@@ -245,8 +260,11 @@ func NewMachine(config *Config) (*Machine, error) {
 	internalDNSIP := func() netip.Addr {
 		return m.IP()
 	}
-	m.docker = machinedocker.NewServer(dockerCli, db, internalDNSIP)
+	m.dockerServer = machinedocker.NewServer(dockerService, db, internalDNSIP,
-	m.localMachineServer = newGRPCServer(m, c, m.docker)
+		machinedocker.WithNetworkReady(m.IsNetworkReady),
+		machinedocker.WithWaitForNetworkReady(m.WaitForNetworkReady))
+	caddyServer := caddyconfig.NewServer(caddyconfig.NewService(config.CaddyConfigDir))
+	m.localMachineServer = newGRPCServer(m, c, m.dockerServer, caddyServer)
 
 	if m.Initialised() {
 		m.initialised <- struct{}{}
@@ -255,11 +273,12 @@ func NewMachine(config *Config) (*Machine, error) {
 	return m, nil
 }
 
-func newGRPCServer(m pb.MachineServer, c pb.ClusterServer, d pb.DockerServer) *grpc.Server {
+func newGRPCServer(m pb.MachineServer, c pb.ClusterServer, d pb.DockerServer, caddy pb.CaddyServer) *grpc.Server {
 	s := grpc.NewServer()
 	pb.RegisterMachineServer(s, m)
 	pb.RegisterClusterServer(s, c)
 	pb.RegisterDockerServer(s, d)
+	pb.RegisterCaddyServer(s, caddy)
 	return s
 }
 
@@ -287,6 +306,9 @@ func (m *Machine) IP() netip.Addr {
 }
 
 func (m *Machine) Run(ctx context.Context) error {
+	// Create a cancellable context for the Run method to allow stopping the machine gracefully.
+	ctx, m.stop = context.WithCancel(ctx)
+
 	// Docker dependency is essential for the machine to function. Block until it's ready.
 	if err := docker.WaitDaemonReady(ctx, m.config.DockerClient); err != nil {
 		return fmt.Errorf("wait for Docker daemon: %w", err)
@@ -294,7 +316,7 @@ func (m *Machine) Run(ctx context.Context) error {
 
 	// Configure and start the corrosion service on the loopback if the machine is not initialised as a cluster
 	// member. This provides the store required for the machine to initialise a new cluster on it. Once the machine
-	// is initialised, the corrosion service is managed by the networkController.
+	// is initialised, the corrosion service is managed by the clusterController.
 	if !m.Initialised() {
 		if err := m.configureCorrosion(); err != nil {
 			return fmt.Errorf("configure corrosion service: %w", err)
@@ -304,6 +326,7 @@ func (m *Machine) Run(ctx context.Context) error {
 		if err := m.config.CorrosionService.Start(ctx); err != nil {
 			return fmt.Errorf("start corrosion service: %w", err)
 		}
+		slog.Info("Corrosion service started.")
 	}
 
 	// Use an errgroup to coordinate error handling and graceful shutdown of multiple machine components.
@@ -314,147 +337,134 @@ func (m *Machine) Run(ctx context.Context) error {
 	if err != nil {
 		return fmt.Errorf("listen machine API unix socket %q: %w", m.config.MachineSockPath, err)
 	}
-	errGroup.Go(
+	errGroup.Go(func() error {
-		func() error {
+		slog.Info("Starting local machine API server.", "path", m.config.MachineSockPath)
-			slog.Info("Starting local machine API server.", "path", m.config.MachineSockPath)
+		if err := m.localMachineServer.Serve(machineListener); err != nil {
-			if err := m.localMachineServer.Serve(machineListener); err != nil {
+			return fmt.Errorf("local machine API server failed: %w", err)
-				return fmt.Errorf("local machine API server failed: %w", err)
+		}
-			}
+		return nil
-			return nil
+	})
-		},
-	)
 
 	// Start the local API proxy server.
 	proxyListener, err := listenUnixSocket(m.config.UncloudSockPath)
 	if err != nil {
 		return fmt.Errorf("listen API proxy unix socket %q: %w", m.config.UncloudSockPath, err)
 	}
-	errGroup.Go(
+	errGroup.Go(func() error {
-		func() error {
+		slog.Info("Starting local API proxy server.", "path", m.config.UncloudSockPath)
-			slog.Info("Starting local API proxy server.", "path", m.config.UncloudSockPath)
+		if err := m.localProxyServer.Serve(proxyListener); err != nil {
-			if err := m.localProxyServer.Serve(proxyListener); err != nil {
+			return fmt.Errorf("local API proxy server failed: %w", err)
-				return fmt.Errorf("local API proxy server failed: %w", err)
+		}
-			}
+		return nil
-			return nil
+	})
-		},
-	)
 	// Signal that the machine is ready.
 	close(m.started)
 
-	// Control loop for managing components that depend on the machine being initialised as a cluster member.
+	// Wait for the machine to be initialised as a member of a cluster and run the cluster controller.
-	errGroup.Go(
+	errGroup.Go(func() error {
-		func() error {
+		if !m.Initialised() {
-			if !m.Initialised() {
+			slog.Info(
-				slog.Info(
+				"Waiting for the machine to be initialised as a member of a cluster to start the cluster controller.",
-					"Waiting for the machine to be initialised as a member of a cluster " +
+			)
-						"to start the network controller.",
+		}
-				)
+
+		select {
+		case <-m.initialised:
+			m.cluster.UpdateMachineID(m.state.ID)
+
+			// Ensure the corrosion config is up to date, including a new gossip address if the machine
+			// has just joined a cluster.
+			if err := m.configureCorrosion(); err != nil {
+				return fmt.Errorf("configure corrosion service: %w", err)
+			}
+			slog.Info("Configured corrosion service.", "dir", m.config.CorrosionDir)
+
+			slog.Info("Starting cluster controller.")
+			// Update the proxy director's local address to the machine's management IP address, allowing
+			// the proxy to identify which requests should be proxied to the local machine API server.
+			m.proxyDirector.UpdateLocalAddress(m.state.Network.ManagementIP.String())
+			proxyServer := grpc.NewServer(
+				grpc.ForceServerCodecV2(proxy.Codec()),
+				grpc.UnknownServiceHandler(
+					proxy.TransparentHandler(m.proxyDirector.Director),
+				),
+			)
+
+			// Create a new caddyconfig controller for managing the Caddy reverse proxy configuration.
+			// It will also serve the current machine ID at /.uncloud-verify to verify Caddy reachability.
+			caddyconfigCtrl, err := caddyconfig.NewController(
+				m.state.ID,
+				m.config.CaddyConfigDir,
+				DefaultCaddyAdminSockPath,
+				m.store,
+			)
+			if err != nil {
+				return fmt.Errorf("create caddyconfig controller: %w", err)
 			}
 
-			var ctrl *networkController
+			dnsResolver := dns.NewClusterResolver(m.store)
-			// Error channel for communicating the termination of the network controller.
+			dnsServer, err := dns.NewServer(m.IP(), dnsResolver, m.config.DNSUpstreams)
-			errCh := make(chan error)
+			if err != nil {
-
+				return fmt.Errorf("create embedded DNS server: %w", err)
-			for {
-				select {
-				// Wait for the machine to be initialised as a member of a cluster to start the network controller.
-				// It can be reset when leaving the cluster and then re-initialised again with a new configuration.
-				case <-m.initialised:
-					var err error
-
-					m.cluster.UpdateMachineID(m.state.ID)
-
-					// Ensure the corrosion config is up to date, including a new gossip address if the machine
-					// has just joined a cluster.
-					if err = m.configureCorrosion(); err != nil {
-						return fmt.Errorf("configure corrosion service: %w", err)
-					}
-					slog.Info("Configured corrosion service.", "dir", m.config.CorrosionDir)
-
-					slog.Info("Starting network controller.")
-					// Update the proxy director's local address to the machine's management IP address, allowing
-					// the proxy to identify which requests should be proxied to the local machine API server.
-					m.proxyDirector.UpdateLocalAddress(m.state.Network.ManagementIP.String())
-					proxyServer := grpc.NewServer(
-						grpc.ForceServerCodecV2(proxy.Codec()),
-						grpc.UnknownServiceHandler(
-							proxy.TransparentHandler(m.proxyDirector.Director),
-						),
-					)
-
-					// Create a new Caddyfile controller for managing the Caddy reverse proxy configuration.
-					// It will also serve the current machine ID at /.uncloud-verify to verify Caddy reachability.
-					caddyfileCtrl, err := caddyconfig.NewController(m.store, m.config.CaddyConfigPath, m.state.ID)
-					if err != nil {
-						return fmt.Errorf("create Caddyfile controller: %w", err)
-					}
-
-					dnsResolver := dns.NewClusterResolver(m.store)
-					dnsServer, err := dns.NewServer(m.IP(), dnsResolver, m.config.DNSUpstreams)
-					if err != nil {
-						return fmt.Errorf("create embedded DNS server: %w", err)
-					}
-
-					ctrl, err = newNetworkController(
-						m.state,
-						m.store,
-						proxyServer,
-						m.config.CorrosionService,
-						m.config.DockerClient,
-						caddyfileCtrl,
-						dnsServer,
-						dnsResolver,
-					)
-					if err != nil {
-						return fmt.Errorf("initialise network controller: %w", err)
-					}
-
-					go func() {
-						if err = ctrl.Run(ctx); err != nil {
-							errCh <- fmt.Errorf("run network controller: %w", err)
-						} else {
-							slog.Info("Network controller stopped.")
-							errCh <- nil
-						}
-					}()
-				case err := <-errCh:
-					if err != nil {
-						return err
-					}
-					ctrl = nil
-				case <-ctx.Done():
-					// Wait for the network controller to stop before returning.
-					if ctrl != nil {
-						if err := <-errCh; err != nil {
-							return err
-						}
-					}
-					return nil
-				}
 			}
-		},
+
-	)
+			m.mu.Lock()
+			m.clusterCtrl, err = newClusterController(
+				m.state,
+				m.store,
+				proxyServer,
+				m.config.CorrosionService,
+				m.dockerService,
+				m.networkReady,
+				caddyconfigCtrl,
+				dnsServer,
+				dnsResolver,
+			)
+			m.mu.Unlock()
+			if err != nil {
+				return fmt.Errorf("initialise cluster controller: %w", err)
+			}
+
+			if err = m.clusterCtrl.Run(ctx); err != nil {
+				return fmt.Errorf("run cluster controller: %w", err)
+			}
+			slog.Info("Cluster controller stopped.")
+
+		case <-ctx.Done():
+			// The context was cancelled before the machine was initialised.
+		}
+
+		return nil
+	})
 
 	// Shutdown goroutine.
-	errGroup.Go(
+	errGroup.Go(func() error {
-		func() error {
+		var err error
-			<-ctx.Done()
-			slog.Info("Stopping local machine API server.")
-			// TODO: implement timeout for graceful shutdown.
-			m.localMachineServer.GracefulStop()
-			slog.Info("Local machine API server stopped.")
 
-			slog.Info("Stopping local API proxy server.")
+		<-ctx.Done()
-			// TODO: implement timeout for graceful shutdown.
+		slog.Info("Stopping local machine API server.")
-			m.localProxyServer.GracefulStop()
+		// TODO: implement timeout for graceful shutdown.
-			// Close the proxy director to close all backend connections.
+		m.localMachineServer.GracefulStop()
-			m.proxyDirector.Close()
+		slog.Info("Local machine API server stopped.")
-			slog.Info("Local API proxy server stopped.")
 
-			m.config.DockerClient.Close()
+		slog.Info("Stopping local API proxy server.")
-			return nil
+		// TODO: implement timeout for graceful shutdown.
-		},
+		m.localProxyServer.GracefulStop()
-	)
+		// Close the proxy director to close all backend connections.
+		m.proxyDirector.Close()
+		slog.Info("Local API proxy server stopped.")
+
+		// Clean up the machine data and resources if the machine shutdown was initiated by a reset.
+		if m.resetting {
+			slog.Info("Cleaning up machine data and resources.")
+			if err = m.cleanup(); err != nil {
+				slog.Error("Failed to clean up machine data and resources.", "err", err)
+			}
+		}
+
+		m.config.DockerClient.Close()
+		return err
+	})
 
 	return errGroup.Wait()
 }
@@ -483,7 +493,7 @@ func listenUnixSocket(path string) (net.Listener, error) {
 
 	// Ensure the parent directory exists and has the correct group permissions.
 	parent, _ := filepath.Split(path)
-	if err = os.MkdirAll(parent, 0750); err != nil {
+	if err = os.MkdirAll(parent, 0o750); err != nil {
 		return nil, fmt.Errorf("create directory %q: %w", parent, err)
 	}
 	if err = os.Chown(parent, -1, gid); err != nil {
@@ -537,15 +547,38 @@ func (m *Machine) configureCorrosion() error {
 		return fmt.Errorf("write corrosion config: %w", err)
 	}
 
-	if err := os.WriteFile(schemaPath, []byte(store.Schema), 0644); err != nil {
+	if err := os.WriteFile(schemaPath, []byte(store.Schema), 0o644); err != nil {
 		return fmt.Errorf("write corrosion schema: %w", err)
 	}
 
 	return nil
 }
 
+// cleanup removes the machine resources and persistent state.
+func (m *Machine) cleanup() error {
+	var errs []error
+
+	m.mu.RLock()
+	clusterCtrl := m.clusterCtrl
+	m.mu.RUnlock()
+	if clusterCtrl != nil {
+		if err := clusterCtrl.Cleanup(); err != nil {
+			errs = append(errs, fmt.Errorf("cleanup cluster resources: %w", err))
+		}
+	}
+
+	if err := os.RemoveAll(m.config.DataDir); err != nil {
+		errs = append(errs,
+			fmt.Errorf("remove data directory with persistent machine state '%s': %w", m.config.DataDir, err))
+	} else {
+		slog.Info("Removed data directory storing persistent machine state.", "path", m.config.DataDir)
+	}
+
+	return errors.Join(errs...)
+}
+
 // CheckPrerequisites verifies if the machine meets all necessary system requirements to participate in the cluster.
-func (m *Machine) CheckPrerequisites(ctx context.Context, _ *emptypb.Empty) (*pb.CheckPrerequisitesResponse, error) {
+func (m *Machine) CheckPrerequisites(_ context.Context, _ *emptypb.Empty) (*pb.CheckPrerequisitesResponse, error) {
 	// Check DNS port (UDP) availability.
 	if err := checkDNSPortAvailable(); err != nil {
 		return &pb.CheckPrerequisitesResponse{
@@ -776,20 +809,62 @@ func (m *Machine) Inspect(_ context.Context, _ *emptypb.Empty) (*pb.MachineInfo,
 	}, nil
 }
 
-// Reset restores the machine to a clean state, removing all cluster-related сonfiguration and data and scheduling
+// IsNetworkReady returns true if the Docker network is ready for containers.
-// a graceful shutdown. The uncloud daemon will restart the machine if managed by systemd.
+func (m *Machine) IsNetworkReady() bool {
-func (m *Machine) Reset(ctx context.Context, _ *pb.ResetRequest) (*emptypb.Empty, error) {
+	if !m.Initialised() {
+		// If machine is not initialized, there's no network to check
+		return false
+	}
+
+	// Check if network is ready by checking if the networkReady channel has been closed
+	select {
+	case <-m.networkReady:
+		return true
+	default:
+		return false
+	}
+}
+
+// WaitForNetworkReady waits for the Docker network to be ready for containers.
+// It returns nil when the network is ready or an error if the context is cancelled.
+func (m *Machine) WaitForNetworkReady(ctx context.Context) error {
+	if !m.Initialised() {
+		// If machine is not initialized, there's no network to wait for
+		return nil
+	}
+
+	// Wait for network to be ready or context to be cancelled
+	select {
+	case <-m.networkReady:
+		return nil
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+}
+
+// Reset restores the machine to a clean state, scheduling a graceful shutdown and removing all cluster-related
+// configuration and resource. The uncloud daemon will restart the machine if managed by systemd.
+func (m *Machine) Reset(_ context.Context, _ *pb.ResetRequest) (*emptypb.Empty, error) {
+	if !m.Initialised() {
+		return nil, nil
+	}
+
+	// Check if the machine is already being reset to avoid concurrent resets.
+	m.mu.Lock()
+	if m.resetting {
+		m.mu.Unlock()
+		return nil, status.Error(codes.FailedPrecondition, "machine is already being reset")
+	}
+	m.resetting = true
+	m.mu.Unlock()
+
 	slog.Info("Resetting machine to a clean state.")
+	// Trigger the machine shutdown. The resetting boolean informs the machine to clean up its resources on shutdown.
+	// We can't clean up the resources synchronously here because this is an RPC call that depends on the running
+	// gRPC server and network.
+	m.stop()
 
-	// TODO: stop and remove all managed service containers.
+	return &emptypb.Empty{}, nil
-	// TODO: check if the request is coming from the unix or network socket. For the network socket, the reset should
-	//  be called in a separate goroutine to avoid blocking the RPC response.
-	// TODO: stop the network controller
-	// TODO: implement and call Cleanup on the network controller to remove Docker network, WG interface, iptables
-	//  rules, corrosion state, ?stop corrosion service.
-	// TODO: stop the machine and remove the machine.json state. The daemon should restart it to a clean state.
-
-	return &emptypb.Empty{}, status.Error(codes.Unimplemented, "reset machine is not implemented yet")
 }
 
 // InspectService returns detailed information about a service and its containers stored in the cluster store.
@@ -824,7 +899,7 @@ func (m *Machine) InspectService(
 		}
 	}
 
-	ctr := api.ServiceContainer{Container: records[0].Container}
+	ctr := records[0].Container
 	svc := &pb.Service{
 		Id:         ctr.ServiceID(),
 		Name:       ctr.ServiceName(),

internal/machine/network/ip.go

@@ -14,7 +14,7 @@ func MachineIP(subnet netip.Prefix) netip.Addr {
 }
 
 // ManagementIP returns the IPv6 address of a peer derived from the first 14 bytes of its public key.
-// This address is intended for cluster management traffic.
+// This address always starts with fdcc: and is intended for cluster management traffic.
 func ManagementIP(publicKey secret.Secret) netip.Addr {
 	bytes := [16]byte{0xfd, 0xcc}
 	copy(bytes[2:], publicKey[:14])

internal/machine/network/peer.go

@@ -1,11 +1,12 @@
 package network
 
 import (
-	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 	"log/slog"
 	"net/netip"
 	"slices"
 	"time"
+
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
 )
 
 const (

internal/machine/network/tunnel/tunnel.go

@@ -3,13 +3,14 @@ package tunnel
 import (
 	"context"
 	"fmt"
-	"golang.zx2c4.com/wireguard/conn"
-	"golang.zx2c4.com/wireguard/device"
-	"golang.zx2c4.com/wireguard/tun/netstack"
 	"net"
 	"net/netip"
 	"time"
+
 	"github.com/psviderski/uncloud/internal/secret"
+	"golang.zx2c4.com/wireguard/conn"
+	"golang.zx2c4.com/wireguard/device"
+	"golang.zx2c4.com/wireguard/tun/netstack"
 )
 
 const (