docs: generate CLI reference docs for wg commands

* feat: Add `uc wg show` command to inspect a machine's uncloud wireguard network (draft / work in progress)

* Compile proto files with `make proto-mise`

* Fix lint errors

* Output peers in tabwriter table

* Lookup machine name for wireguard peer public key

* Add --machine flag to `uc wg show` to proxy call to specific machine

* Small refactor to move wg show logic out into a separate function

.github/workflows/go-tests.yml

@@ -36,6 +36,12 @@ jobs:
           git diff --exit-code ||
             (echo "go.mod or go.sum has changed. Please run 'go mod tidy' and commit the changes." && exit 1)
 
+      - name: Generate docs
+        run: |
+          make cli-docs
+          git diff --exit-code ||
+            (echo "Documentation is out of date. Please run 'make cli-docs' and commit the changes." && exit 1)
+
       - name: Run tests
         run: |
           make ucind-image

.gitignore

@@ -7,6 +7,8 @@
 *.dll
 *.so
 *.dylib
+/uncloud
+/uncloudd
 
 # OS X
 .DS_Store

README.md

@@ -1,7 +1,7 @@
 <div align="center">
   <img src="./website/landing/images/logo-title.svg#gh-light-mode-only" alt="Uncloud logo"/>
   <img src="./website/landing/images/logo-title-dark.svg#gh-dark-mode-only" alt="Uncloud logo"/>
-  <p><strong>▸ Docker simplicity. Multi-machine power ◂</strong></p>
+  <p><strong>▸ Deploy and scale containerised apps across servers without Swarm or Kubernetes overhead ◂</strong></p>
 
   <p>
     <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>
@@ -281,6 +281,16 @@ using the CLI or directly over SSH. They all have the complete cluster state and
 machine is a full backup of your control plane.
 </details>
 
+## 🧪 Interactive tutorials
+
+To give you a chance to play with Uncloud without even leaving your browser, we're providing interactive tutorials and playgrounds on the [iximiuz Labs](https://labs.iximiuz.com/) platform.
+
+Available tutorials:
+
+1. [Setting up a new Uncloud cluster](https://labs.iximiuz.com/tutorials/uncloud-create-cluster-ebebf72b) - the tutorial walks you through creating a new cluster with two machines and then deploying a simple web service to it.
+
+You can also launch the [Uncloud playground](https://labs.iximiuz.com/playgrounds/uncloud-cluster-64523f7c) where you can play with an already initialized Uncloud cluster.
+
 ## 🏗 Project status
 
 Uncloud is currently in active development and is **not ready for production use**. Features may change significantly

cmd/uncloud/context/connection.go

@@ -12,6 +12,7 @@ import (
 func NewConnectionCommand() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:     "connection",
+		Aliases: []string{"conn"},
 		Short:   "Choose a new default connection for the current context.",
 		RunE: func(cmd *cobra.Command, args []string) error {
 			uncli := cmd.Context().Value("cli").(*cli.CLI)

cmd/uncloud/machine/add.go

@@ -8,7 +8,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/cenkalti/backoff/v4"
+	"github.com/charmbracelet/huh/spinner"
+	"github.com/charmbracelet/lipgloss"
 	"github.com/docker/compose/v2/pkg/progress"
 	"github.com/psviderski/uncloud/cmd/uncloud/caddy"
 	"github.com/psviderski/uncloud/internal/cli"
@@ -16,8 +17,6 @@ import (
 	"github.com/psviderski/uncloud/pkg/api"
 	"github.com/psviderski/uncloud/pkg/client"
 	"github.com/spf13/cobra"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
 )
 
 type addOptions struct {
@@ -27,6 +26,7 @@ type addOptions struct {
 	publicIP  string
 	sshKey    string
 	version   string
+	yes       bool
 }
 
 func NewAddCommand() *cobra.Command {
@@ -41,6 +41,8 @@ Connection methods:
   ssh+cli://user@host   - Use system SSH command (supports ProxyJump, SSH config)`,
 		Args: cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
+			cli.BindEnvToFlag(cmd, "yes", "UNCLOUD_AUTO_CONFIRM")
+
 			uncli := cmd.Context().Value("cli").(*cli.CLI)
 
 			// Determine if SSH CLI needs to be used and strip scheme
@@ -88,6 +90,9 @@ Connection methods:
 		&opts.version, "version", "latest",
 		"Version of the Uncloud daemon to install on the machine.",
 	)
+	cmd.Flags().BoolVarP(&opts.yes, "yes", "y", false,
+		"Auto-confirm prompts (e.g., resetting an already initialised machine).\n"+
+			"Should be explicitly set when running non-interactively, e.g., in CI/CD pipelines. [$UNCLOUD_AUTO_CONFIRM]")
 
 	return cmd
 }
@@ -113,6 +118,7 @@ func add(ctx context.Context, uncli *cli.CLI, remoteMachine *cli.RemoteMachine,
 		RemoteMachine: remoteMachine,
 		SkipInstall:   opts.noInstall,
 		Version:       opts.version,
+		AutoConfirm:   opts.yes,
 	})
 	if err != nil {
 		return err
@@ -124,25 +130,37 @@ func add(ctx context.Context, uncli *cli.CLI, remoteMachine *cli.RemoteMachine,
 		return nil
 	}
 
-	// Wait for the cluster to be initialised to be able to deploy the Caddy service.
-	fmt.Println("Waiting for the machine to be ready...")
-	fmt.Println()
-	if err = waitClusterInitialised(ctx, machineClient); err != nil {
-		return fmt.Errorf("wait for cluster to be initialised on machine: %w", err)
+	// Wait for the cluster to be initialised on the machine to be able to deploy the Caddy service.
+	err = spinner.New().
+		Title(" Waiting for the machine to join the cluster...").
+		Type(spinner.MiniDot).
+		Style(lipgloss.NewStyle().Foreground(lipgloss.Color("3"))).
+		TitleStyle(lipgloss.NewStyle()).
+		ActionWithErr(func(ctx context.Context) error {
+			return machineClient.WaitClusterReady(ctx, 5*time.Minute)
+		}).
+		Run()
+	if err != nil {
+		return fmt.Errorf("wait for machine to join the cluster: %w", err)
 	}
+	fmt.Println("Machine joined the cluster.")
 
+	// TODO: scale the existing Caddy service to the new machine instead of running a new deployment
+	//  that may cause a small downtime.
 	// Deploy a Caddy service container to the added machine. If caddy service is already deployed on other machines,
-	// use the deployed image version. Otherwise, use the latest version.
+	// use the deployed image version.
 	// NOTE: We use the cluster client to inspect and scale the Caddy service because the newly added machine may have
 	// issues accessing the Machine API of existing machines in the cluster.
 	// See the issue for more details: https://github.com/psviderski/uncloud/issues/65.
 	caddyImage := ""
 	caddySvc, err := clusterClient.InspectService(ctx, client.CaddyServiceName)
 	if err != nil {
-		if !errors.Is(err, api.ErrNotFound) {
+		if errors.Is(err, api.ErrNotFound) {
+			// Caddy service is not deployed.
+			return nil
+		}
 		return fmt.Errorf("inspect caddy service: %w", err)
 	}
-	} else {
 	caddyImage = caddySvc.Containers[0].Container.Config.Image
 	// Find the latest created container and use its image.
 	var latestCreated time.Time
@@ -156,47 +174,53 @@ func add(ctx context.Context, uncli *cli.CLI, remoteMachine *cli.RemoteMachine,
 			caddyImage = c.Container.Config.Image
 		}
 	}
-	}
 
-	// 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{})
 	if err != nil {
 		return fmt.Errorf("create caddy deployment: %w", err)
 	}
 
+	plan, err := d.Plan(ctx)
+	if err != nil {
+		return fmt.Errorf("plan caddy deployment: %w", err)
+	}
+
+	fmt.Println()
+	if len(plan.Operations) == 0 {
+		fmt.Printf("%s service is up to date.\n", client.CaddyServiceName)
+	} else {
+		// Initialise a machine and container name resolver to properly format the plan output.
+		resolver, err := clusterClient.ServiceOperationNameResolver(ctx, caddySvc)
+		if err != nil {
+			return fmt.Errorf("create machine and container name resolver for service operations: %w", err)
+		}
+
+		fmt.Println("caddy deployment plan:")
+		fmt.Println(plan.Format(resolver))
+		fmt.Println()
+
+		if !opts.yes {
+			confirmed, err := cli.Confirm()
+			if err != nil {
+				return fmt.Errorf("confirm deployment: %w", err)
+			}
+			if !confirmed {
+				fmt.Println("Cancelled. No changes were made.")
+				return nil
+			}
+		}
+
 		err = progress.RunWithTitle(ctx, func(ctx context.Context) error {
 			if _, err = d.Run(ctx); err != nil {
 				return fmt.Errorf("deploy caddy: %w", err)
 			}
 			return nil
-	}, uncli.ProgressOut(), fmt.Sprintf("Deploying service %s", d.Spec.Name))
+		}, uncli.ProgressOut(), fmt.Sprintf("Deploying service %s (%s mode)", d.Spec.Name, d.Spec.Mode))
 		if err != nil {
 			return err
 		}
+	}
 
 	fmt.Println()
 	return caddy.UpdateDomainRecords(ctx, machineClient, uncli.ProgressOut())
 }
-
-func waitClusterInitialised(ctx context.Context, client *client.Client) error {
-	boff := backoff.WithContext(backoff.NewExponentialBackOff(
-		backoff.WithMaxInterval(1*time.Second),
-		backoff.WithMaxElapsedTime(5*time.Minute),
-	), ctx)
-
-	check := func() error {
-		_, err := client.ListMachines(ctx, nil)
-		if err == nil {
-			return nil
-		}
-
-		statusErr := status.Convert(err)
-		if statusErr.Code() == codes.FailedPrecondition {
-			return err
-		}
-		return backoff.Permanent(err)
-	}
-
-	return backoff.Retry(check, boff)
-}

cmd/uncloud/machine/init.go

@@ -5,7 +5,10 @@ import (
 	"fmt"
 	"net/netip"
 	"strings"
+	"time"
 
+	"github.com/charmbracelet/huh/spinner"
+	"github.com/charmbracelet/lipgloss"
 	"github.com/docker/compose/v2/pkg/progress"
 	"github.com/psviderski/uncloud/cmd/uncloud/caddy"
 	"github.com/psviderski/uncloud/cmd/uncloud/dns"
@@ -28,6 +31,7 @@ type initOptions struct {
 	sshKey      string
 	version     string
 	context     string
+	yes         bool
 }
 
 func NewInitCommand() *cobra.Command {
@@ -56,6 +60,8 @@ Connection methods:
 		// TODO: support initialising a cluster on the local machine.
 		Args: cobra.MaximumNArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
+			cli.BindEnvToFlag(cmd, "yes", "UNCLOUD_AUTO_CONFIRM")
+
 			uncli := cmd.Context().Value("cli").(*cli.CLI)
 
 			var remoteMachine *cli.RemoteMachine
@@ -82,6 +88,11 @@ Connection methods:
 			return initCluster(cmd.Context(), uncli, remoteMachine, opts)
 		},
 	}
+
+	cmd.Flags().StringVarP(
+		&opts.context, "context", "c", cli.DefaultContextName,
+		"Name of the new context to be created in the Uncloud config to manage the cluster.",
+	)
 	cmd.Flags().StringVar(&opts.dnsEndpoint, "dns-endpoint", dns.DefaultUncloudDNSAPIEndpoint,
 		"API endpoint for the Uncloud DNS service.")
 	cmd.Flags().StringVarP(
@@ -119,10 +130,9 @@ Connection methods:
 		&opts.version, "version", "latest",
 		"Version of the Uncloud daemon to install on the machine.",
 	)
-	cmd.Flags().StringVarP(
-		&opts.context, "context", "c", cli.DefaultContextName,
-		"Name of the new context to be created in the Uncloud config to manage the cluster.",
-	)
+	cmd.Flags().BoolVarP(&opts.yes, "yes", "y", false,
+		"Auto-confirm prompts (e.g., resetting an already initialised machine).\n"+
+			"Should be explicitly set when running non-interactively, e.g., in CI/CD pipelines. [$UNCLOUD_AUTO_CONFIRM]")
 
 	return cmd
 }
@@ -159,20 +169,34 @@ func initCluster(ctx context.Context, uncli *cli.CLI, remoteMachine *cli.RemoteM
 		RemoteMachine: remoteMachine,
 		SkipInstall:   opts.noInstall,
 		Version:       opts.version,
+		AutoConfirm:   opts.yes,
 	})
 	if err != nil {
 		return err
 	}
 	defer client.Close()
 
+	// Since the cluster API needs a few moments to become ready after cluster initialisation,
+	// we keep the user informed during this wait. We wait here even if no Caddy or DNS is requested
+	// as the cluster needs to be ready so that commands such as 'uc machine ls' work immediately after init.
+	err = spinner.New().
+		Title(" Waiting for the cluster to be ready...").
+		Type(spinner.MiniDot).
+		Style(lipgloss.NewStyle().Foreground(lipgloss.Color("3"))).
+		TitleStyle(lipgloss.NewStyle()).
+		ActionWithErr(func(ctx context.Context) error {
+			return client.WaitClusterReady(ctx, 1*time.Minute)
+		}).
+		Run()
+	if err != nil {
+		return fmt.Errorf("wait for cluster to be ready: %w", err)
+	}
+	fmt.Println("Cluster is ready.")
+
 	if opts.noCaddy && opts.noDNS {
 		return nil
 	}
 
-	// Deploy the Caddy service to the initialised machine.
-	// The creation of a deployment plan talks to cluster API. Since the API needs a few moments to become available
-	// after cluster initialisation, we keep the user informed during this wait.
-	fmt.Println("Waiting for the machine to be ready...")
 	fmt.Println()
 
 	if !opts.noDNS {

cmd/uncloud/main.go

@@ -14,6 +14,7 @@ import (
 	"github.com/psviderski/uncloud/cmd/uncloud/machine"
 	"github.com/psviderski/uncloud/cmd/uncloud/service"
 	"github.com/psviderski/uncloud/cmd/uncloud/volume"
+	"github.com/psviderski/uncloud/cmd/uncloud/wg"
 	"github.com/psviderski/uncloud/internal/cli"
 	"github.com/psviderski/uncloud/internal/cli/config"
 	"github.com/psviderski/uncloud/internal/fs"
@@ -134,6 +135,7 @@ func main() {
 		service.NewStartCommand("service"),
 		service.NewStopCommand("service"),
 		volume.NewRootCommand(),
+		wg.NewRootCommand(),
 	)
 	cobra.CheckErr(cmd.Execute())
 }

cmd/uncloud/ps.go

@@ -205,18 +205,12 @@ func collectContainers(ctx context.Context, cli *client.Client) ([]containerInfo
 
 	var containers []containerInfo
 	for _, msc := range machineContainers {
-		machineName := "unknown"
-
 		// Metadata can be nil if the request was broadcasted to only one machine.
 		if msc.Metadata == nil && len(machineContainers) > 1 {
 			return nil, fmt.Errorf("something went wrong with gRPC proxy: metadata is missing for a machine response")
 		}
-		if msc.Metadata != nil && msc.Metadata.Error != "" {
-			client.PrintWarning(fmt.Sprintf("failed to list containers on machine %s: %s", machineName,
-				msc.Metadata.Error))
-			continue
-		}
 
+		machineName := "unknown"
 		if msc.Metadata != nil {
 			var ok bool
 			machineName, ok = machinesNamesByIP[msc.Metadata.Machine]
@@ -231,6 +225,12 @@ func collectContainers(ctx context.Context, cli *client.Client) ([]containerInfo
 			}
 		}
 
+		if msc.Metadata != nil && msc.Metadata.Error != "" {
+			client.PrintWarning(fmt.Sprintf("failed to list containers on machine %s: %s", machineName,
+				msc.Metadata.Error))
+			continue
+		}
+
 		for _, ctr := range msc.Containers {
 			if ctr.Container.State == nil || ctr.Container.Config == nil {
 				continue

cmd/uncloud/service/exec.go

@@ -59,7 +59,7 @@ If the service has multiple replicas and no container ID is specified, the comma
 
 	execCmd.Flags().BoolVarP(&opts.detach, "detach", "d", false, "Detached mode: run command in the background")
 
-	execCmd.Flags().BoolVarP(&opts.noTty, "no-tty", "T", !cli.IsStdoutTerminal(),
+	execCmd.Flags().BoolVarP(&opts.noTty, "no-tty", "T", false,
 		"Disable pseudo-TTY allocation. By default 'uc exec' allocates a TTY when connected to a terminal.")
 
 	// Keep "-i" and "-t" flags hidden for compatibility with docker exec
@@ -82,6 +82,11 @@ If the service has multiple replicas and no container ID is specified, the comma
 }
 
 func runExec(ctx context.Context, uncli *cli.CLI, serviceName string, command []string, opts execCliOptions) error {
+	// Disable TTY allocation if not connected to a terminal
+	if !cli.IsStdoutTerminal() {
+		opts.noTty = true
+	}
+
 	if !opts.detach {
 		// Check if we're trying to attach to a TTY from a non-TTY client, e.g.
 		// when doing an 'cmd | uc exec ...'

cmd/uncloud/wg/wg.go

@@ -0,0 +1,132 @@
+package wg
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"strings"
+	"text/tabwriter"
+	"time"
+
+	"github.com/docker/go-units"
+	"github.com/psviderski/uncloud/internal/cli"
+	"github.com/spf13/cobra"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func NewRootCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "wg",
+		Short: "Inspect WireGuard network",
+	}
+	cmd.AddCommand(newShowCommand())
+	return cmd
+}
+
+type showOptions struct {
+	machine string
+}
+
+func newShowCommand() *cobra.Command {
+	opts := showOptions{}
+	cmd := &cobra.Command{
+		Use:   "show",
+		Short: "Show WireGuard network configuration for a machine.",
+		Long: "Show the WireGuard network configuration for the machine currently connected to " +
+			"(or specified by the global --connect flag).",
+		Args: cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			uncli := cmd.Context().Value("cli").(*cli.CLI)
+			return runShow(cmd.Context(), uncli, opts)
+		},
+	}
+	cmd.Flags().StringVarP(&opts.machine, "machine", "m", "",
+		"Name or ID of the machine to show the configuration for. (default is connected machine)")
+	return cmd
+}
+
+func runShow(ctx context.Context, uncli *cli.CLI, opts showOptions) error {
+	client, err := uncli.ConnectCluster(ctx)
+	if err != nil {
+		return fmt.Errorf("connection failed: %w", err)
+	}
+	defer client.Close()
+
+	if opts.machine != "" {
+		// Proxy requests to the specified machine.
+		ctx, _, err = client.ProxyMachinesContext(ctx, []string{opts.machine})
+		if err != nil {
+			return err
+		}
+	}
+
+	resp, err := client.MachineClient.InspectWireGuardNetwork(ctx, nil)
+	if err != nil {
+		if status.Code(err) == codes.Unimplemented {
+			return fmt.Errorf("inspect WireGuard network: "+
+				"make sure the target machine is running uncloudd daemon version >= 0.16.0: %w", err)
+		}
+		return err
+	}
+
+	machines, err := client.ListMachines(ctx, nil)
+	if err != nil {
+		return fmt.Errorf("list machines: %w", err)
+	}
+	machinesNamesByPublicKey := make(map[string]string)
+	for _, m := range machines {
+		publicKey := wgtypes.Key(m.Machine.Network.PublicKey).String()
+		machinesNamesByPublicKey[publicKey] = m.Machine.Name
+	}
+
+	// Fetch the machine's name for more descriptive output
+	inspectResp, err := client.MachineClient.InspectMachine(ctx, nil)
+	if err == nil {
+		fmt.Printf("Machine name:         %s\n", inspectResp.Machines[0].Machine.Name)
+	}
+
+	fmt.Printf("WireGuard interface:  %s\n", resp.InterfaceName)
+	fmt.Printf("WireGuard public key: %s\n", wgtypes.Key(resp.PublicKey).String())
+	fmt.Printf("WireGuard port:       %d\n", resp.ListenPort)
+	fmt.Println()
+
+	if len(resp.Peers) == 0 {
+		fmt.Println("No WireGuard peers configured.")
+		return nil
+	}
+
+	tw := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
+	if _, err = fmt.Fprintln(tw, "PEER\tPUBLIC KEY\tENDPOINT\tHANDSHAKE\tRECEIVED\tSENT\tALLOWED IPS"); err != nil {
+		return fmt.Errorf("write header: %w", err)
+	}
+
+	for _, peer := range resp.Peers {
+		machineName, ok := machinesNamesByPublicKey[wgtypes.Key(peer.PublicKey).String()]
+		if !ok {
+			machineName = "(unknown)"
+		}
+
+		lastHandshake := ""
+		if peer.LastHandshakeTime != nil {
+			lastHandshake = time.Since(peer.LastHandshakeTime.AsTime()).Round(time.Second).String() + " ago"
+		}
+
+		_, err = fmt.Fprintf(
+			tw,
+			"%s\t%s\t%s\t%s\t%s\t%s\t%s\n",
+			machineName,
+			wgtypes.Key(peer.PublicKey).String(),
+			peer.Endpoint,
+			lastHandshake,
+			units.HumanSize(float64(peer.ReceiveBytes)),
+			units.HumanSize(float64(peer.TransmitBytes)),
+			strings.Join(peer.AllowedIps, ", "),
+		)
+		if err != nil {
+			return fmt.Errorf("write row: %w", err)
+		}
+	}
+	return tw.Flush()
+}

internal/cli/cli.go

@@ -162,6 +162,7 @@ type InitClusterOptions struct {
 	RemoteMachine *RemoteMachine
 	SkipInstall   bool
 	Version       string
+	AutoConfirm   bool
 }
 
 // InitCluster initialises a new cluster on a remote machine and returns a client to interact with the cluster.
@@ -197,7 +198,12 @@ func (cli *CLI) initRemoteMachine(ctx context.Context, opts InitClusterOptions)
 		return nil, fmt.Errorf("inspect machine: %w", err)
 	}
 	if minfo.Id != "" {
-		if err = promptResetMachine(ctx, machineClient.MachineClient); err != nil {
+		if !opts.AutoConfirm {
+			if err = promptResetMachine(); err != nil {
+				return nil, err
+			}
+		}
+		if err = resetAndWaitMachine(ctx, machineClient.MachineClient); err != nil {
 			return nil, err
 		}
 	}
@@ -297,6 +303,7 @@ type AddMachineOptions struct {
 	RemoteMachine *RemoteMachine
 	SkipInstall   bool
 	Version       string
+	AutoConfirm   bool
 }
 
 // AddMachine provisions a remote machine and adds it to the cluster. It returns a cluster client and a machine client.
@@ -326,6 +333,7 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (*client
 	}()
 
 	// Check if the machine is already initialised as a cluster member and prompt the user to reset it first.
+	// TODO: refactor to use client.InspectMachine.
 	minfo, err := machineClient.Inspect(ctx, &emptypb.Empty{})
 	if err != nil {
 		return nil, nil, fmt.Errorf("inspect machine: %w", err)
@@ -342,7 +350,12 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (*client
 			return nil, nil, fmt.Errorf("machine is already a member of this cluster (%s)", minfo.Name)
 		}
 
-		if err = promptResetMachine(ctx, machineClient.MachineClient); err != nil {
+		if !opts.AutoConfirm {
+			if err = promptResetMachine(); err != nil {
+				return nil, nil, err
+			}
+		}
+		if err = resetAndWaitMachine(ctx, machineClient.MachineClient); err != nil {
 			return nil, nil, err
 		}
 	}
@@ -393,6 +406,18 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (*client
 		return nil, nil, fmt.Errorf("add machine to cluster (context '%s'): %w", contextName, err)
 	}
 
+	// Get the current store DB version from the cluster to pass to the join request.
+	var storeDBVersion int64
+	inspectResp, err := c.MachineClient.InspectMachine(ctx, &emptypb.Empty{})
+	if err != nil {
+		// TODO(lhf): remove Unimplemented check when v0.17.0 is released.
+		if status.Convert(err).Code() != codes.Unimplemented {
+			return nil, nil, fmt.Errorf("inspect current cluster machine: %w", err)
+		}
+	} else {
+		storeDBVersion = inspectResp.Machines[0].StoreDbVersion
+	}
+
 	// 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 {
@@ -409,6 +434,7 @@ func (cli *CLI) AddMachine(ctx context.Context, opts AddMachineOptions) (*client
 	joinReq := &pb.JoinClusterRequest{
 		Machine:           addResp.Machine,
 		OtherMachines:     otherMachines,
+		MinStoreDbVersion: storeDBVersion,
 	}
 	if _, err = machineClient.JoinCluster(ctx, joinReq); err != nil {
 		return nil, nil, fmt.Errorf("join cluster: %w", err)

internal/cli/machine.go

@@ -2,6 +2,7 @@ package cli
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"os"
 	"strings"
@@ -86,7 +87,13 @@ func provisionMachine(ctx context.Context, exec sshexec.Executor, version string
 	return nil
 }
 
-func promptResetMachine(ctx context.Context, machineClient pb.MachineClient) error {
+func promptResetMachine() error {
+	if !IsStdinTerminal() {
+		return errors.New("the remote machine is already initialised as a cluster member; " +
+			"cannot ask to confirm reset in non-interactive mode, " +
+			"use --yes flag or set UNCLOUD_AUTO_CONFIRM=true to auto-confirm")
+	}
+
 	var confirm bool
 	form := huh.NewForm(
 		huh.NewGroup(
@@ -110,10 +117,15 @@ func promptResetMachine(ctx context.Context, machineClient pb.MachineClient) err
 		return fmt.Errorf("remote machine is already initialised as a cluster member")
 	}
 
+	return nil
+}
+
+func resetAndWaitMachine(ctx context.Context, machineClient pb.MachineClient) error {
 	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)

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

@@ -10,6 +10,7 @@ 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"
 )
@@ -371,6 +372,8 @@ type JoinClusterRequest struct {
 
 	Machine       *MachineInfo   `protobuf:"bytes,1,opt,name=machine,proto3" json:"machine,omitempty"`
 	OtherMachines []*MachineInfo `protobuf:"bytes,3,rep,name=other_machines,json=otherMachines,proto3" json:"other_machines,omitempty"`
+	// Minimum store database version the new machine should sync to before starting cluster operations.
+	MinStoreDbVersion int64 `protobuf:"varint,4,opt,name=min_store_db_version,json=minStoreDbVersion,proto3" json:"min_store_db_version,omitempty"`
 }
 
 func (x *JoinClusterRequest) Reset() {
@@ -419,6 +422,125 @@ func (x *JoinClusterRequest) GetOtherMachines() []*MachineInfo {
 	return nil
 }
 
+func (x *JoinClusterRequest) GetMinStoreDbVersion() int64 {
+	if x != nil {
+		return x.MinStoreDbVersion
+	}
+	return 0
+}
+
+type InspectMachineResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Must contain only one repeated messages field to allow broadcasting InspectMachine requests to multiple machines.
+	Machines []*MachineDetails `protobuf:"bytes,1,rep,name=machines,proto3" json:"machines,omitempty"`
+}
+
+func (x *InspectMachineResponse) Reset() {
+	*x = InspectMachineResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[6]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *InspectMachineResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*InspectMachineResponse) ProtoMessage() {}
+
+func (x *InspectMachineResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_machine_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 InspectMachineResponse.ProtoReflect.Descriptor instead.
+func (*InspectMachineResponse) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *InspectMachineResponse) GetMachines() []*MachineDetails {
+	if x != nil {
+		return x.Machines
+	}
+	return nil
+}
+
+type MachineDetails struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Metadata *Metadata    `protobuf:"bytes,1,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	Machine  *MachineInfo `protobuf:"bytes,2,opt,name=machine,proto3" json:"machine,omitempty"`
+	// Current Corrosion cr-sqlite database version (Lamport timestamp) of the cluster store.
+	StoreDbVersion int64 `protobuf:"varint,3,opt,name=store_db_version,json=storeDbVersion,proto3" json:"store_db_version,omitempty"`
+}
+
+func (x *MachineDetails) Reset() {
+	*x = MachineDetails{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[7]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *MachineDetails) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MachineDetails) ProtoMessage() {}
+
+func (x *MachineDetails) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[7]
+	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 MachineDetails.ProtoReflect.Descriptor instead.
+func (*MachineDetails) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{7}
+}
+
+func (x *MachineDetails) GetMetadata() *Metadata {
+	if x != nil {
+		return x.Metadata
+	}
+	return nil
+}
+
+func (x *MachineDetails) GetMachine() *MachineInfo {
+	if x != nil {
+		return x.Machine
+	}
+	return nil
+}
+
+func (x *MachineDetails) GetStoreDbVersion() int64 {
+	if x != nil {
+		return x.StoreDbVersion
+	}
+	return 0
+}
+
 type TokenResponse struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -430,7 +552,7 @@ type TokenResponse struct {
 func (x *TokenResponse) Reset() {
 	*x = TokenResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[6]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -443,7 +565,7 @@ func (x *TokenResponse) String() string {
 func (*TokenResponse) ProtoMessage() {}
 
 func (x *TokenResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[6]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -456,7 +578,7 @@ func (x *TokenResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use TokenResponse.ProtoReflect.Descriptor instead.
 func (*TokenResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{6}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *TokenResponse) GetToken() string {
@@ -475,7 +597,7 @@ type ResetRequest struct {
 func (x *ResetRequest) Reset() {
 	*x = ResetRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[7]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -488,7 +610,7 @@ func (x *ResetRequest) String() string {
 func (*ResetRequest) ProtoMessage() {}
 
 func (x *ResetRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[7]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -501,7 +623,7 @@ func (x *ResetRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ResetRequest.ProtoReflect.Descriptor instead.
 func (*ResetRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{7}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{9}
 }
 
 type Service struct {
@@ -518,7 +640,7 @@ type Service struct {
 func (x *Service) Reset() {
 	*x = Service{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[8]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -531,7 +653,7 @@ func (x *Service) String() string {
 func (*Service) ProtoMessage() {}
 
 func (x *Service) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[8]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -544,7 +666,7 @@ func (x *Service) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Service.ProtoReflect.Descriptor instead.
 func (*Service) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{8}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *Service) GetId() string {
@@ -586,7 +708,7 @@ type InspectServiceRequest struct {
 func (x *InspectServiceRequest) Reset() {
 	*x = InspectServiceRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[9]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -599,7 +721,7 @@ func (x *InspectServiceRequest) String() string {
 func (*InspectServiceRequest) ProtoMessage() {}
 
 func (x *InspectServiceRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[9]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -612,7 +734,7 @@ func (x *InspectServiceRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use InspectServiceRequest.ProtoReflect.Descriptor instead.
 func (*InspectServiceRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{9}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *InspectServiceRequest) GetId() string {
@@ -633,7 +755,7 @@ type InspectServiceResponse struct {
 func (x *InspectServiceResponse) Reset() {
 	*x = InspectServiceResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[10]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -646,7 +768,7 @@ func (x *InspectServiceResponse) String() string {
 func (*InspectServiceResponse) ProtoMessage() {}
 
 func (x *InspectServiceResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[10]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -659,7 +781,7 @@ func (x *InspectServiceResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use InspectServiceResponse.ProtoReflect.Descriptor instead.
 func (*InspectServiceResponse) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{10}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *InspectServiceResponse) GetService() *Service {
@@ -669,6 +791,164 @@ func (x *InspectServiceResponse) GetService() *Service {
 	return nil
 }
 
+type InspectWireGuardNetworkResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	InterfaceName string           `protobuf:"bytes,1,opt,name=interface_name,json=interfaceName,proto3" json:"interface_name,omitempty"`
+	PublicKey     []byte           `protobuf:"bytes,2,opt,name=public_key,json=publicKey,proto3" json:"public_key,omitempty"`
+	ListenPort    int32            `protobuf:"varint,3,opt,name=listen_port,json=listenPort,proto3" json:"listen_port,omitempty"`
+	Peers         []*WireGuardPeer `protobuf:"bytes,4,rep,name=peers,proto3" json:"peers,omitempty"`
+}
+
+func (x *InspectWireGuardNetworkResponse) Reset() {
+	*x = InspectWireGuardNetworkResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *InspectWireGuardNetworkResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*InspectWireGuardNetworkResponse) ProtoMessage() {}
+
+func (x *InspectWireGuardNetworkResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[13]
+	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 InspectWireGuardNetworkResponse.ProtoReflect.Descriptor instead.
+func (*InspectWireGuardNetworkResponse) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{13}
+}
+
+func (x *InspectWireGuardNetworkResponse) GetInterfaceName() string {
+	if x != nil {
+		return x.InterfaceName
+	}
+	return ""
+}
+
+func (x *InspectWireGuardNetworkResponse) GetPublicKey() []byte {
+	if x != nil {
+		return x.PublicKey
+	}
+	return nil
+}
+
+func (x *InspectWireGuardNetworkResponse) GetListenPort() int32 {
+	if x != nil {
+		return x.ListenPort
+	}
+	return 0
+}
+
+func (x *InspectWireGuardNetworkResponse) GetPeers() []*WireGuardPeer {
+	if x != nil {
+		return x.Peers
+	}
+	return nil
+}
+
+type WireGuardPeer struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	PublicKey         []byte                 `protobuf:"bytes,1,opt,name=public_key,json=publicKey,proto3" json:"public_key,omitempty"`
+	Endpoint          string                 `protobuf:"bytes,2,opt,name=endpoint,proto3" json:"endpoint,omitempty"`
+	LastHandshakeTime *timestamppb.Timestamp `protobuf:"bytes,3,opt,name=last_handshake_time,json=lastHandshakeTime,proto3" json:"last_handshake_time,omitempty"`
+	ReceiveBytes      int64                  `protobuf:"varint,4,opt,name=receive_bytes,json=receiveBytes,proto3" json:"receive_bytes,omitempty"`
+	TransmitBytes     int64                  `protobuf:"varint,5,opt,name=transmit_bytes,json=transmitBytes,proto3" json:"transmit_bytes,omitempty"`
+	AllowedIps        []string               `protobuf:"bytes,6,rep,name=allowed_ips,json=allowedIps,proto3" json:"allowed_ips,omitempty"`
+}
+
+func (x *WireGuardPeer) Reset() {
+	*x = WireGuardPeer{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *WireGuardPeer) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*WireGuardPeer) ProtoMessage() {}
+
+func (x *WireGuardPeer) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[14]
+	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 WireGuardPeer.ProtoReflect.Descriptor instead.
+func (*WireGuardPeer) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{14}
+}
+
+func (x *WireGuardPeer) GetPublicKey() []byte {
+	if x != nil {
+		return x.PublicKey
+	}
+	return nil
+}
+
+func (x *WireGuardPeer) GetEndpoint() string {
+	if x != nil {
+		return x.Endpoint
+	}
+	return ""
+}
+
+func (x *WireGuardPeer) GetLastHandshakeTime() *timestamppb.Timestamp {
+	if x != nil {
+		return x.LastHandshakeTime
+	}
+	return nil
+}
+
+func (x *WireGuardPeer) GetReceiveBytes() int64 {
+	if x != nil {
+		return x.ReceiveBytes
+	}
+	return 0
+}
+
+func (x *WireGuardPeer) GetTransmitBytes() int64 {
+	if x != nil {
+		return x.TransmitBytes
+	}
+	return 0
+}
+
+func (x *WireGuardPeer) GetAllowedIps() []string {
+	if x != nil {
+		return x.AllowedIps
+	}
+	return nil
+}
+
 type Service_Container struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -682,7 +962,7 @@ type Service_Container struct {
 func (x *Service_Container) Reset() {
 	*x = Service_Container{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[11]
+		mi := &file_internal_machine_api_pb_machine_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -695,7 +975,7 @@ func (x *Service_Container) String() string {
 func (*Service_Container) ProtoMessage() {}
 
 func (x *Service_Container) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[11]
+	mi := &file_internal_machine_api_pb_machine_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -708,7 +988,7 @@ func (x *Service_Container) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Service_Container.ProtoReflect.Descriptor instead.
 func (*Service_Container) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{8, 0}
+	return file_internal_machine_api_pb_machine_proto_rawDescGZIP(), []int{10, 0}
 }
 
 func (x *Service_Container) GetMachineId() string {
@@ -732,113 +1012,170 @@ var file_internal_machine_api_pb_machine_proto_rawDesc = []byte{
 	0x6e, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x70, 0x62, 0x2f, 0x6d, 0x61, 0x63, 0x68, 0x69, 0x6e,
 	0x65, 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, 0x24, 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, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22,
-	0x85, 0x01, 0x0a, 0x0b, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x49, 0x6e, 0x66, 0x6f, 0x12,
-	0x0e, 0x0a, 0x02, 0x69, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x02, 0x69, 0x64, 0x12,
-	0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e,
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+	0x73, 0x65, 0x74, 0x12, 0x11, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x52, 0x65, 0x73, 0x65, 0x74, 0x52,
+	0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x12, 0x49,
+	0x0a, 0x0e, 0x49, 0x6e, 0x73, 0x70, 0x65, 0x63, 0x74, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65,
+	0x12, 0x1a, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x49, 0x6e, 0x73, 0x70, 0x65, 0x63, 0x74, 0x53, 0x65,
+	0x72, 0x76, 0x69, 0x63, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x1b, 0x2e, 0x61,
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+	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 (
@@ -853,7 +1190,7 @@ func file_internal_machine_api_pb_machine_proto_rawDescGZIP() []byte {
 	return file_internal_machine_api_pb_machine_proto_rawDescData
 }
 
-var file_internal_machine_api_pb_machine_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_internal_machine_api_pb_machine_proto_msgTypes = make([]protoimpl.MessageInfo, 16)
 var file_internal_machine_api_pb_machine_proto_goTypes = []any{
 	(*MachineInfo)(nil),                     // 0: api.MachineInfo
 	(*NetworkConfig)(nil),                   // 1: api.NetworkConfig
@@ -861,49 +1198,64 @@ var file_internal_machine_api_pb_machine_proto_goTypes = []any{
 	(*InitClusterRequest)(nil),              // 3: api.InitClusterRequest
 	(*InitClusterResponse)(nil),             // 4: api.InitClusterResponse
 	(*JoinClusterRequest)(nil),              // 5: api.JoinClusterRequest
-	(*TokenResponse)(nil),              // 6: api.TokenResponse
-	(*ResetRequest)(nil),               // 7: api.ResetRequest
-	(*Service)(nil),                    // 8: api.Service
-	(*InspectServiceRequest)(nil),      // 9: api.InspectServiceRequest
-	(*InspectServiceResponse)(nil),     // 10: api.InspectServiceResponse
-	(*Service_Container)(nil),          // 11: api.Service.Container
-	(*IP)(nil),                         // 12: api.IP
-	(*IPPrefix)(nil),                   // 13: api.IPPrefix
-	(*IPPort)(nil),                     // 14: api.IPPort
-	(*emptypb.Empty)(nil),              // 15: google.protobuf.Empty
+	(*InspectMachineResponse)(nil),          // 6: api.InspectMachineResponse
+	(*MachineDetails)(nil),                  // 7: api.MachineDetails
+	(*TokenResponse)(nil),                   // 8: api.TokenResponse
+	(*ResetRequest)(nil),                    // 9: api.ResetRequest
+	(*Service)(nil),                         // 10: api.Service
+	(*InspectServiceRequest)(nil),           // 11: api.InspectServiceRequest
+	(*InspectServiceResponse)(nil),          // 12: api.InspectServiceResponse
+	(*InspectWireGuardNetworkResponse)(nil), // 13: api.InspectWireGuardNetworkResponse
+	(*WireGuardPeer)(nil),                   // 14: api.WireGuardPeer
+	(*Service_Container)(nil),               // 15: api.Service.Container
+	(*IP)(nil),                              // 16: api.IP
+	(*IPPrefix)(nil),                        // 17: api.IPPrefix
+	(*IPPort)(nil),                          // 18: api.IPPort
+	(*Metadata)(nil),                        // 19: api.Metadata
+	(*timestamppb.Timestamp)(nil),           // 20: google.protobuf.Timestamp
+	(*emptypb.Empty)(nil),                   // 21: google.protobuf.Empty
 }
 var file_internal_machine_api_pb_machine_proto_depIdxs = []int32{
 	1,  // 0: api.MachineInfo.network:type_name -> api.NetworkConfig
-	12, // 1: api.MachineInfo.public_ip:type_name -> api.IP
-	13, // 2: api.NetworkConfig.subnet:type_name -> api.IPPrefix
-	12, // 3: api.NetworkConfig.management_ip:type_name -> api.IP
-	14, // 4: api.NetworkConfig.endpoints:type_name -> api.IPPort
-	13, // 5: api.InitClusterRequest.network:type_name -> api.IPPrefix
-	12, // 6: api.InitClusterRequest.public_ip:type_name -> api.IP
+	16, // 1: api.MachineInfo.public_ip:type_name -> api.IP
+	17, // 2: api.NetworkConfig.subnet:type_name -> api.IPPrefix
+	16, // 3: api.NetworkConfig.management_ip:type_name -> api.IP
+	18, // 4: api.NetworkConfig.endpoints:type_name -> api.IPPort
+	17, // 5: api.InitClusterRequest.network:type_name -> api.IPPrefix
+	16, // 6: api.InitClusterRequest.public_ip:type_name -> api.IP
 	0,  // 7: api.InitClusterResponse.machine:type_name -> api.MachineInfo
 	0,  // 8: api.JoinClusterRequest.machine:type_name -> api.MachineInfo
 	0,  // 9: api.JoinClusterRequest.other_machines:type_name -> api.MachineInfo
-	11, // 10: api.Service.containers:type_name -> api.Service.Container
-	8,  // 11: api.InspectServiceResponse.service:type_name -> api.Service
-	15, // 12: api.Machine.CheckPrerequisites:input_type -> google.protobuf.Empty
-	3,  // 13: api.Machine.InitCluster:input_type -> api.InitClusterRequest
-	5,  // 14: api.Machine.JoinCluster:input_type -> api.JoinClusterRequest
-	15, // 15: api.Machine.Token:input_type -> google.protobuf.Empty
-	15, // 16: api.Machine.Inspect:input_type -> google.protobuf.Empty
-	7,  // 17: api.Machine.Reset:input_type -> api.ResetRequest
-	9,  // 18: api.Machine.InspectService:input_type -> api.InspectServiceRequest
-	2,  // 19: api.Machine.CheckPrerequisites:output_type -> api.CheckPrerequisitesResponse
-	4,  // 20: api.Machine.InitCluster:output_type -> api.InitClusterResponse
-	15, // 21: api.Machine.JoinCluster:output_type -> google.protobuf.Empty
-	6,  // 22: api.Machine.Token:output_type -> api.TokenResponse
-	0,  // 23: api.Machine.Inspect:output_type -> api.MachineInfo
-	15, // 24: api.Machine.Reset:output_type -> google.protobuf.Empty
-	10, // 25: api.Machine.InspectService:output_type -> api.InspectServiceResponse
-	19, // [19:26] is the sub-list for method output_type
-	12, // [12:19] 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
+	7,  // 10: api.InspectMachineResponse.machines:type_name -> api.MachineDetails
+	19, // 11: api.MachineDetails.metadata:type_name -> api.Metadata
+	0,  // 12: api.MachineDetails.machine:type_name -> api.MachineInfo
+	15, // 13: api.Service.containers:type_name -> api.Service.Container
+	10, // 14: api.InspectServiceResponse.service:type_name -> api.Service
+	14, // 15: api.InspectWireGuardNetworkResponse.peers:type_name -> api.WireGuardPeer
+	20, // 16: api.WireGuardPeer.last_handshake_time:type_name -> google.protobuf.Timestamp
+	21, // 17: api.Machine.CheckPrerequisites:input_type -> google.protobuf.Empty
+	3,  // 18: api.Machine.InitCluster:input_type -> api.InitClusterRequest
+	5,  // 19: api.Machine.JoinCluster:input_type -> api.JoinClusterRequest
+	21, // 20: api.Machine.Token:input_type -> google.protobuf.Empty
+	21, // 21: api.Machine.Inspect:input_type -> google.protobuf.Empty
+	21, // 22: api.Machine.InspectMachine:input_type -> google.protobuf.Empty
+	21, // 23: api.Machine.InspectWireGuardNetwork:input_type -> google.protobuf.Empty
+	9,  // 24: api.Machine.Reset:input_type -> api.ResetRequest
+	11, // 25: api.Machine.InspectService:input_type -> api.InspectServiceRequest
+	2,  // 26: api.Machine.CheckPrerequisites:output_type -> api.CheckPrerequisitesResponse
+	4,  // 27: api.Machine.InitCluster:output_type -> api.InitClusterResponse
+	21, // 28: api.Machine.JoinCluster:output_type -> google.protobuf.Empty
+	8,  // 29: api.Machine.Token:output_type -> api.TokenResponse
+	0,  // 30: api.Machine.Inspect:output_type -> api.MachineInfo
+	6,  // 31: api.Machine.InspectMachine:output_type -> api.InspectMachineResponse
+	13, // 32: api.Machine.InspectWireGuardNetwork:output_type -> api.InspectWireGuardNetworkResponse
+	21, // 33: api.Machine.Reset:output_type -> google.protobuf.Empty
+	12, // 34: api.Machine.InspectService:output_type -> api.InspectServiceResponse
+	26, // [26:35] is the sub-list for method output_type
+	17, // [17:26] is the sub-list for method input_type
+	17, // [17:17] is the sub-list for extension type_name
+	17, // [17:17] is the sub-list for extension extendee
+	0,  // [0:17] is the sub-list for field type_name
 }
 
 func init() { file_internal_machine_api_pb_machine_proto_init() }
@@ -986,7 +1338,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[6].Exporter = func(v any, i int) any {
-			switch v := v.(*TokenResponse); i {
+			switch v := v.(*InspectMachineResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -998,7 +1350,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[7].Exporter = func(v any, i int) any {
-			switch v := v.(*ResetRequest); i {
+			switch v := v.(*MachineDetails); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1010,7 +1362,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[8].Exporter = func(v any, i int) any {
-			switch v := v.(*Service); i {
+			switch v := v.(*TokenResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1022,7 +1374,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[9].Exporter = func(v any, i int) any {
-			switch v := v.(*InspectServiceRequest); i {
+			switch v := v.(*ResetRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1034,7 +1386,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[10].Exporter = func(v any, i int) any {
-			switch v := v.(*InspectServiceResponse); i {
+			switch v := v.(*Service); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1046,6 +1398,54 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_machine_proto_msgTypes[11].Exporter = func(v any, i int) any {
+			switch v := v.(*InspectServiceRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_machine_proto_msgTypes[12].Exporter = func(v any, i int) any {
+			switch v := v.(*InspectServiceResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_machine_proto_msgTypes[13].Exporter = func(v any, i int) any {
+			switch v := v.(*InspectWireGuardNetworkResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_machine_proto_msgTypes[14].Exporter = func(v any, i int) any {
+			switch v := v.(*WireGuardPeer); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_machine_proto_msgTypes[15].Exporter = func(v any, i int) any {
 			switch v := v.(*Service_Container); i {
 			case 0:
 				return &v.state
@@ -1068,7 +1468,7 @@ func file_internal_machine_api_pb_machine_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_internal_machine_api_pb_machine_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   12,
+			NumMessages:   16,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

internal/machine/api/pb/machine.proto

@@ -5,6 +5,7 @@ package api;
 option go_package = "github.com/psviderski/uncloud/internal/machine/api/pb";
 
 import "google/protobuf/empty.proto";
+import "google/protobuf/timestamp.proto";
 import "internal/machine/api/pb/common.proto";
 
 service Machine {
@@ -13,7 +14,12 @@ service Machine {
   rpc InitCluster(InitClusterRequest) returns (InitClusterResponse);
   rpc JoinCluster(JoinClusterRequest) returns (google.protobuf.Empty);
   rpc Token(google.protobuf.Empty) returns (TokenResponse);
+  // Deprecated: use InspectMachine instead.
   rpc Inspect(google.protobuf.Empty) returns (MachineInfo);
+  // InspectMachine retrieves detailed information about the machine. Supports broadcasting to multiple machines.
+  rpc InspectMachine(google.protobuf.Empty) returns (InspectMachineResponse);
+  // InspectWireGuardNetwork retrieves the current WireGuard network configuration and peer status.
+  rpc InspectWireGuardNetwork(google.protobuf.Empty) returns (InspectWireGuardNetworkResponse);
   // Reset restores the machine to a clean state, removing all cluster-related configuration and data.
   rpc Reset(ResetRequest) returns (google.protobuf.Empty);
 
@@ -58,6 +64,20 @@ message InitClusterResponse {
 message JoinClusterRequest {
   MachineInfo machine = 1;
   repeated MachineInfo other_machines = 3;
+  // Minimum store database version the new machine should sync to before starting cluster operations.
+  int64 min_store_db_version = 4;
+}
+
+message InspectMachineResponse {
+  // Must contain only one repeated messages field to allow broadcasting InspectMachine requests to multiple machines.
+  repeated MachineDetails machines = 1;
+}
+
+message MachineDetails {
+  Metadata metadata = 1;
+  MachineInfo machine = 2;
+  // Current Corrosion cr-sqlite database version (Lamport timestamp) of the cluster store.
+  int64 store_db_version = 3;
 }
 
 message TokenResponse {
@@ -88,3 +108,19 @@ message InspectServiceRequest {
 message InspectServiceResponse {
   Service service = 1;
 }
+
+message InspectWireGuardNetworkResponse {
+  string interface_name = 1;
+  bytes public_key = 2;
+  int32 listen_port = 3;
+  repeated WireGuardPeer peers = 4;
+}
+
+message WireGuardPeer {
+  bytes public_key = 1;
+  string endpoint = 2;
+  google.protobuf.Timestamp last_handshake_time = 3;
+  int64 receive_bytes = 4;
+  int64 transmit_bytes = 5;
+  repeated string allowed_ips = 6;
+}

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

@@ -25,6 +25,8 @@ const (
 	Machine_JoinCluster_FullMethodName             = "/api.Machine/JoinCluster"
 	Machine_Token_FullMethodName                   = "/api.Machine/Token"
 	Machine_Inspect_FullMethodName                 = "/api.Machine/Inspect"
+	Machine_InspectMachine_FullMethodName          = "/api.Machine/InspectMachine"
+	Machine_InspectWireGuardNetwork_FullMethodName = "/api.Machine/InspectWireGuardNetwork"
 	Machine_Reset_FullMethodName                   = "/api.Machine/Reset"
 	Machine_InspectService_FullMethodName          = "/api.Machine/InspectService"
 )
@@ -38,7 +40,12 @@ type MachineClient interface {
 	InitCluster(ctx context.Context, in *InitClusterRequest, opts ...grpc.CallOption) (*InitClusterResponse, error)
 	JoinCluster(ctx context.Context, in *JoinClusterRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	Token(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*TokenResponse, error)
+	// Deprecated: use InspectMachine instead.
 	Inspect(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*MachineInfo, error)
+	// InspectMachine retrieves detailed information about the machine. Supports broadcasting to multiple machines.
+	InspectMachine(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*InspectMachineResponse, error)
+	// InspectWireGuardNetwork retrieves the current WireGuard network configuration and peer status.
+	InspectWireGuardNetwork(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*InspectWireGuardNetworkResponse, error)
 	// 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)
@@ -102,6 +109,26 @@ func (c *machineClient) Inspect(ctx context.Context, in *emptypb.Empty, opts ...
 	return out, nil
 }
 
+func (c *machineClient) InspectMachine(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*InspectMachineResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(InspectMachineResponse)
+	err := c.cc.Invoke(ctx, Machine_InspectMachine_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *machineClient) InspectWireGuardNetwork(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*InspectWireGuardNetworkResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(InspectWireGuardNetworkResponse)
+	err := c.cc.Invoke(ctx, Machine_InspectWireGuardNetwork_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *machineClient) Reset(ctx context.Context, in *ResetRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(emptypb.Empty)
@@ -131,7 +158,12 @@ type MachineServer interface {
 	InitCluster(context.Context, *InitClusterRequest) (*InitClusterResponse, error)
 	JoinCluster(context.Context, *JoinClusterRequest) (*emptypb.Empty, error)
 	Token(context.Context, *emptypb.Empty) (*TokenResponse, error)
+	// Deprecated: use InspectMachine instead.
 	Inspect(context.Context, *emptypb.Empty) (*MachineInfo, error)
+	// InspectMachine retrieves detailed information about the machine. Supports broadcasting to multiple machines.
+	InspectMachine(context.Context, *emptypb.Empty) (*InspectMachineResponse, error)
+	// InspectWireGuardNetwork retrieves the current WireGuard network configuration and peer status.
+	InspectWireGuardNetwork(context.Context, *emptypb.Empty) (*InspectWireGuardNetworkResponse, error)
 	// 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)
@@ -160,6 +192,12 @@ func (UnimplementedMachineServer) Token(context.Context, *emptypb.Empty) (*Token
 func (UnimplementedMachineServer) Inspect(context.Context, *emptypb.Empty) (*MachineInfo, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Inspect not implemented")
 }
+func (UnimplementedMachineServer) InspectMachine(context.Context, *emptypb.Empty) (*InspectMachineResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method InspectMachine not implemented")
+}
+func (UnimplementedMachineServer) InspectWireGuardNetwork(context.Context, *emptypb.Empty) (*InspectWireGuardNetworkResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method InspectWireGuardNetwork not implemented")
+}
 func (UnimplementedMachineServer) Reset(context.Context, *ResetRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method Reset not implemented")
 }
@@ -277,6 +315,42 @@ func _Machine_Inspect_Handler(srv interface{}, ctx context.Context, dec func(int
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Machine_InspectMachine_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.(MachineServer).InspectMachine(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Machine_InspectMachine_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MachineServer).InspectMachine(ctx, req.(*emptypb.Empty))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Machine_InspectWireGuardNetwork_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.(MachineServer).InspectWireGuardNetwork(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Machine_InspectWireGuardNetwork_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MachineServer).InspectWireGuardNetwork(ctx, req.(*emptypb.Empty))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Machine_Reset_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(ResetRequest)
 	if err := dec(in); err != nil {
@@ -340,6 +414,14 @@ var Machine_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "Inspect",
 			Handler:    _Machine_Inspect_Handler,
 		},
+		{
+			MethodName: "InspectMachine",
+			Handler:    _Machine_InspectMachine_Handler,
+		},
+		{
+			MethodName: "InspectWireGuardNetwork",
+			Handler:    _Machine_InspectWireGuardNetwork_Handler,
+		},
 		{
 			MethodName: "Reset",
 			Handler:    _Machine_Reset_Handler,

internal/machine/api/proxy/remote.go

@@ -80,6 +80,8 @@ func (b *RemoteBackend) GetConnection(ctx context.Context, _ string) (context.Co
 	backoffConfig.MaxDelay = 15 * time.Second
 
 	var err error
+	// This client keeps retrying connection in the background indefinitely even after the first connection fails
+	// and the Unavailable error is returned to the caller.
 	b.conn, err = grpc.NewClient(
 		b.target,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
@@ -88,7 +90,7 @@ func (b *RemoteBackend) GetConnection(ctx context.Context, _ string) (context.Co
 			// Not published as a constant in gRPC library.
 			// See: https://github.com/grpc/grpc-go/blob/d5dee5fdbdeb52f6ea10b37b2cc7ce37814642d7/clientconn.go#L55-L56
 			// Each connection attempt can take up to MinConnectTimeout.
-			MinConnectTimeout: 20 * time.Second,
+			MinConnectTimeout: 10 * time.Second,
 		}),
 		grpc.WithDefaultCallOptions(
 			grpc.ForceCodecV2(proxy.Codec()),

internal/machine/caddyconfig/caddyfile.go

@@ -12,14 +12,16 @@ import (
 	"strconv"
 	"strings"
 	"text/template"
+	"time"
 
 	"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.
+	caddyfileHeaderFmt = `# Caddyfile autogenerated by Uncloud (DO NOT EDIT): %s
+# Automatically updated on service or health status changes.
+# Docs: https://uncloud.run/docs/concepts/ingress/overview
 `
 	caddyfileTemplate = `# Health check endpoint to verify Caddy reachability on this machine.
 http:// {
@@ -56,7 +58,9 @@ https://{{$hostname}} {
 }{{end}}
 `
 	caddyfileUnavailabeFooter = `# NOTE: User-defined configs for services were skipped because Caddy is not running on this machine
-#       or the latest generated config is invalid. Please check the Caddy logs if it's running.
+#       (not accessible via the shared admin socket /run/uncloud/caddy/admin.sock) or the latest
+#       generated config is invalid. Please check the service 'caddy' is running (uc inspect caddy)
+#       and its logs for more details (uc logs caddy).
 `
 )
 
@@ -120,6 +124,7 @@ func (g *CaddyfileGenerator) Generate(
 		return "", fmt.Errorf("generate base Caddyfile from service ports: %w", err)
 	}
 
+	caddyfileHeader := fmt.Sprintf(caddyfileHeaderFmt, time.Now().UTC().Format(time.RFC3339))
 	if !includeCustom {
 		return fmt.Sprintf("%s\n%s\n%s", caddyfileHeader, caddyfile, caddyfileUnavailabeFooter), nil
 	}

internal/machine/caddyconfig/caddyfile_test.go

@@ -3,6 +3,7 @@ package caddyconfig
 import (
 	"context"
 	"errors"
+	"regexp"
 	"strings"
 	"testing"
 	"time"
@@ -17,8 +18,17 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-const testCaddyfileHeader = `# 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.
+// generatedTimestampRegex matches the "(DO NOT EDIT): <RFC3339 timestamp>" part of the header.
+var generatedTimestampRegex = regexp.MustCompile(`\(DO NOT EDIT\): \d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z`)
+
+// normaliseGeneratedTimestamp replaces dynamic timestamps with a placeholder for test comparison.
+func normaliseGeneratedTimestamp(caddyfile string) string {
+	return generatedTimestampRegex.ReplaceAllString(caddyfile, "(DO NOT EDIT): TIMESTAMP_PLACEHOLDER")
+}
+
+const testCaddyfileHeader = `# Caddyfile autogenerated by Uncloud (DO NOT EDIT): TIMESTAMP_PLACEHOLDER
+# Automatically updated on service or health status changes.
+# Docs: https://uncloud.run/docs/concepts/ingress/overview
 
 # Health check endpoint to verify Caddy reachability on this machine.
 http:// {
@@ -190,7 +200,7 @@ https://secure.example.com {
 			}
 			require.NoError(t, err)
 
-			assert.Equal(t, tt.want, config, "Generated Caddyfile doesn't match")
+			assert.Equal(t, tt.want, normaliseGeneratedTimestamp(config), "Generated Caddyfile doesn't match")
 		})
 	}
 }
@@ -216,8 +226,9 @@ func TestCaddyfileGeneratorWithCustomConfigs(t *testing.T) {
 					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.
+			want: `# Caddyfile autogenerated by Uncloud (DO NOT EDIT): TIMESTAMP_PLACEHOLDER
+# Automatically updated on service or health status changes.
+# Docs: https://uncloud.run/docs/concepts/ingress/overview
 
 # User-defined global config from service 'caddy'.
 # Global Caddy configuration
@@ -412,8 +423,9 @@ web.example.com {
 					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.
+			want: `# Caddyfile autogenerated by Uncloud (DO NOT EDIT): TIMESTAMP_PLACEHOLDER
+# Automatically updated on service or health status changes.
+# Docs: https://uncloud.run/docs/concepts/ingress/overview
 
 # User-defined global config from service 'caddy'.
 # Global config
@@ -649,8 +661,9 @@ badconfig.com {
 					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.
+			want: `# Caddyfile autogenerated by Uncloud (DO NOT EDIT): TIMESTAMP_PLACEHOLDER
+# Automatically updated on service or health status changes.
+# Docs: https://uncloud.run/docs/concepts/ingress/overview
 
 # User-defined global config from service 'caddy'.
 # Global config from test machine
@@ -831,7 +844,7 @@ valid.example.com {
 			}
 			require.NoError(t, err)
 
-			assert.Equal(t, tt.want, config, "Generated Caddyfile doesn't match")
+			assert.Equal(t, tt.want, normaliseGeneratedTimestamp(config), "Generated Caddyfile doesn't match")
 		})
 	}
 }
@@ -926,7 +939,9 @@ http://api.example.com {
 }
 
 # NOTE: User-defined configs for services were skipped because Caddy is not running on this machine
-#       or the latest generated config is invalid. Please check the Caddy logs if it's running.
+#       (not accessible via the shared admin socket /run/uncloud/caddy/admin.sock) or the latest
+#       generated config is invalid. Please check the service 'caddy' is running (uc inspect caddy)
+#       and its logs for more details (uc logs caddy).
 `,
 		},
 		{
@@ -950,7 +965,9 @@ http://api.example.com {
 }
 
 # NOTE: User-defined configs for services were skipped because Caddy is not running on this machine
-#       or the latest generated config is invalid. Please check the Caddy logs if it's running.
+#       (not accessible via the shared admin socket /run/uncloud/caddy/admin.sock) or the latest
+#       generated config is invalid. Please check the service 'caddy' is running (uc inspect caddy)
+#       and its logs for more details (uc logs caddy).
 `,
 		},
 	}
@@ -964,7 +981,7 @@ http://api.example.com {
 			config, err := generator.Generate(ctx, tt.containers, false)
 			require.NoError(t, err)
 
-			assert.Equal(t, tt.want, config, "Generated Caddyfile doesn't match")
+			assert.Equal(t, tt.want, normaliseGeneratedTimestamp(config), "Generated Caddyfile doesn't match")
 		})
 	}
 }

internal/machine/cluster.go

@@ -41,6 +41,8 @@ type clusterController struct {
 	dockerCtrl   *docker.Controller
 	// dockerReady is signalled when Docker is configured and ready for containers.
 	dockerReady chan<- struct{}
+	// clusterReady is signalled when the cluster controller has finished initializing all components.
+	clusterReady    chan<- struct{}
 	caddyconfigCtrl *caddyconfig.Controller
 
 	// dnsServer is the embedded internal DNS server for the cluster listening on the machine IP.
@@ -60,6 +62,7 @@ func newClusterController(
 	corroService corroservice.Service,
 	dockerService *docker.Service,
 	dockerReady chan<- struct{},
+	clusterReady chan<- struct{},
 	caddyfileCtrl *caddyconfig.Controller,
 	dnsServer *dns.Server,
 	dnsResolver *dns.ClusterResolver,
@@ -81,6 +84,7 @@ func newClusterController(
 		corroService:    corroService,
 		dockerCtrl:      docker.NewController(state.ID, dockerService, store),
 		dockerReady:     dockerReady,
+		clusterReady:    clusterReady,
 		caddyconfigCtrl: caddyfileCtrl,
 		dnsServer:       dnsServer,
 		dnsResolver:     dnsResolver,
@@ -123,6 +127,21 @@ func (cc *clusterController) Run(ctx context.Context) error {
 
 	errGroup, ctx := errgroup.WithContext(ctx)
 
+	// Start the WireGuard control loop before waiting for store sync. This ensures endpoint rotation happens
+	// while waiting, allowing Corrosion to connect to peers.
+	errGroup.Go(func() error {
+		if err := cc.wgnet.Run(ctx); err != nil {
+			return fmt.Errorf("WireGuard network failed: %w", err)
+		}
+		return nil
+	})
+
+	// Watch for WireGuard peer endpoint changes and update the machine state accordingly.
+	errGroup.Go(func() error {
+		cc.handleEndpointChanges(ctx)
+		return nil
+	})
+
 	// Start the network API server. Assume the management IP can't be changed when the network is running.
 	apiAddr := net.JoinHostPort(cc.state.Network.ManagementIP.String(), strconv.Itoa(constants.MachineAPIPort))
 	listener, err := net.Listen("tcp", apiAddr)
@@ -137,6 +156,22 @@ func (cc *clusterController) Run(ctx context.Context) error {
 		return nil
 	})
 
+	// Wait for the store database to sync to the minimum version before starting store-dependent components.
+	// This prevents issues with using partially replicated data when the machine just joined the cluster,
+	// e.g., an empty machine list causing WireGuard peer misconfiguration.
+	cc.waitStoreSync(ctx)
+
+	// Check if waitStoreSync exited because the context was cancelled. Return early in that case.
+	if ctx.Err() != nil {
+		cc.stopAPIServer()
+
+		err := errGroup.Wait()
+		if corroErr := cc.stopCorrosion(); corroErr != nil {
+			err = errors.Join(err, corroErr)
+		}
+		return err
+	}
+
 	errGroup.Go(func() error {
 		slog.Info("Starting embedded DNS resolver.")
 		if err := cc.dnsResolver.Run(ctx); err != nil {
@@ -169,44 +204,6 @@ func (cc *clusterController) Run(ctx context.Context) error {
 		return nil
 	})
 
-	// Watch for WireGuard peer endpoint changes and update the machine state accordingly.
-	errGroup.Go(func() error {
-		for {
-			select {
-			case e, ok := <-cc.endpointChanges:
-				if !ok {
-					// The channel was closed, stop watching for changes.
-					cc.endpointChanges = nil
-					return nil
-				}
-
-				cc.state.mu.Lock()
-				for i := range cc.state.Network.Peers {
-					if cc.state.Network.Peers[i].PublicKey.Equal(e.PublicKey) {
-						cc.state.Network.Peers[i].Endpoint = &e.Endpoint
-						break
-					}
-				}
-				if err := cc.state.Save(); err != nil {
-					slog.Error("Failed to save machine state.", "err", err)
-				}
-				cc.state.mu.Unlock()
-
-				slog.Debug("Preserved endpoint change in the machine state.",
-					"public_key", e.PublicKey, "endpoint", e.Endpoint)
-			case <-ctx.Done():
-				return nil
-			}
-		}
-	})
-
-	errGroup.Go(func() error {
-		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.")
 		if err := cc.caddyconfigCtrl.Run(ctx); err != nil {
@@ -225,12 +222,13 @@ func (cc *clusterController) Run(ctx context.Context) error {
 		})
 	}
 
-	// Wait for the context to be done and stop the network API server.
+	// Signal that the cluster controller has finished starting all components.
+	close(cc.clusterReady)
+	slog.Info("Cluster controller finished starting all components.")
+	// Wait for the context to be done and stop all servers and controllers.
 	<-ctx.Done()
-	slog.Info("Stopping network API server.")
-	// TODO: implement timeout for graceful shutdown.
-	cc.server.GracefulStop()
-	slog.Info("Network API server stopped.")
+
+	cc.stopAPIServer()
 
 	// Stop the unregistry server with a timeout if it was started.
 	if cc.unregistry != nil {
@@ -248,19 +246,50 @@ func (cc *clusterController) Run(ctx context.Context) error {
 	// 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.")
+	// Stop Corrosion after all controllers depending on it and API server are stopped.
+	if corroErr := cc.stopCorrosion(); corroErr != nil {
+		err = errors.Join(err, corroErr)
 	}
 
 	return err
 }
 
+// stopAPIServer gracefully stops the network API server with a timeout.
+func (cc *clusterController) stopAPIServer() {
+	timeout := 10 * time.Second
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+
+	stopped := make(chan struct{})
+	go func() {
+		slog.Info("Stopping network API server.")
+		cc.server.GracefulStop()
+		close(stopped)
+	}()
+
+	select {
+	case <-ctx.Done():
+		slog.Warn("Network API server graceful stop timed out, forcing stop.", "timeout", timeout)
+		cc.server.Stop()
+	case <-stopped:
+	}
+
+	slog.Info("Network API server stopped.")
+}
+
+// stopCorrosion stops the Corrosion service with a timeout.
+func (cc *clusterController) stopCorrosion() error {
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	if err := cc.corroService.Stop(ctx); err != nil {
+		return fmt.Errorf("stop corrosion service: %w", err)
+	}
+	slog.Info("Corrosion service stopped.")
+
+	return nil
+}
+
 // ensureDockerNetwork ensures that the Docker network is configured and ready for containers.
 func (cc *clusterController) ensureDockerNetwork(ctx context.Context) error {
 	if err := cc.dockerCtrl.WaitDaemonReady(ctx); err != nil {
@@ -281,6 +310,95 @@ func (cc *clusterController) ensureDockerNetwork(ctx context.Context) error {
 	return nil
 }
 
+// handleEndpointChanges watches for WireGuard peer endpoint changes and persists them to the machine state.
+func (cc *clusterController) handleEndpointChanges(ctx context.Context) {
+	for {
+		select {
+		case e, ok := <-cc.endpointChanges:
+			if !ok {
+				// The channel was closed, stop watching for changes.
+				cc.endpointChanges = nil
+				return
+			}
+
+			cc.state.mu.Lock()
+			for i := range cc.state.Network.Peers {
+				if cc.state.Network.Peers[i].PublicKey.Equal(e.PublicKey) {
+					cc.state.Network.Peers[i].Endpoint = &e.Endpoint
+					break
+				}
+			}
+			if err := cc.state.Save(); err != nil {
+				slog.Error("Failed to save machine state.", "err", err)
+			}
+			cc.state.mu.Unlock()
+
+			slog.Debug("Preserved endpoint change in the machine state.",
+				"public_key", e.PublicKey, "endpoint", e.Endpoint)
+		case <-ctx.Done():
+			return
+		}
+	}
+}
+
+// waitStoreSync waits for the store database to sync to the minimum required DB version if set in the machine state.
+// Blocks until synced or context is cancelled.
+func (cc *clusterController) waitStoreSync(ctx context.Context) {
+	minVersion := cc.state.MinStoreDBVersion
+	if minVersion == 0 {
+		return
+	}
+
+	slog.Info("Waiting for the initial cluster store sync.", "min_version", minVersion)
+
+	ticker := time.NewTicker(500 * time.Millisecond)
+	defer ticker.Stop()
+
+	var (
+		lastVersion    int64
+		lastLogTime    time.Time
+		lastErrLogTime time.Time
+	)
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-ticker.C:
+			version, err := cc.store.DBVersion(ctx)
+			if err != nil {
+				// Log errors at most once every 5 seconds.
+				if time.Since(lastErrLogTime) >= 5*time.Second {
+					slog.Error("Failed to get the cluster store DB version, retrying.", "err", err)
+					lastErrLogTime = time.Now()
+				}
+				continue
+			}
+
+			if version >= minVersion {
+				slog.Info("Cluster store completed the initial sync.", "version", version, "min_version", minVersion)
+
+				// Clear MinStoreDBVersion so next restart doesn't wait for sync.
+				cc.state.mu.Lock()
+				cc.state.MinStoreDBVersion = 0
+				if err := cc.state.Save(); err != nil {
+					slog.Error("Failed to save machine state after the initial cluster store sync.", "err", err)
+				}
+				cc.state.mu.Unlock()
+
+				return
+			}
+
+			// Log progress only once a second.
+			if version != lastVersion && time.Since(lastLogTime) >= 1*time.Second {
+				slog.Info("Syncing cluster store.", "version", version, "min_version", minVersion)
+				lastLogTime = time.Now()
+				lastVersion = version
+			}
+		}
+	}
+}
+
 // 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 {
@@ -340,6 +458,7 @@ func (cc *clusterController) handleMachineChanges(ctx context.Context) error {
 
 		// The machine store may be empty when a machine first joins the cluster, before store synchronization
 		// completes. Skip configuration now and apply it when the store changes are received.
+		// TODO: remove this check after releasing 0.17.0 and assuming cluster machines wait for store sync on join.
 		if len(machines) > 0 {
 			slog.Info("Reconfiguring network peers with the current machines.", "machines", len(machines))
 			if err = cc.configurePeers(machines); err != nil {

internal/machine/cluster/cluster.go

@@ -26,12 +26,19 @@ type Cluster struct {
 	corroAdmin *corrosion.AdminClient
 	// machineID is the ID of the current machine that is running the cluster service.
 	machineID string
+	// initialised is closed when the machine is configured as a member of a cluster.
+	initialised <-chan struct{}
+	// ready is closed when the cluster controller has finished starting all components
+	// and the machine is ready to serve cluster requests.
+	ready <-chan struct{}
 }
 
-func NewCluster(store *store.Store, corroAdmin *corrosion.AdminClient) *Cluster {
+func NewCluster(store *store.Store, corroAdmin *corrosion.AdminClient, initialised, ready <-chan struct{}) *Cluster {
 	return &Cluster{
 		store:       store,
 		corroAdmin:  corroAdmin,
+		initialised: initialised,
+		ready:       ready,
 	}
 }
 
@@ -41,67 +48,45 @@ func (c *Cluster) UpdateMachineID(mid string) {
 }
 
 func (c *Cluster) Init(ctx context.Context, network netip.Prefix) error {
-	initialised, err := c.Initialised(ctx)
-	if err != nil {
-		return err
-	}
-	if initialised {
-		return fmt.Errorf("cluster is already initialised")
+	select {
+	case <-c.initialised:
+		return fmt.Errorf("cluster is already initialised on this machine")
+	default:
 	}
 
-	if err = c.store.Put(ctx, "network", network.String()); err != nil {
+	if err := c.store.Put(ctx, "network", network.String()); err != nil {
 		return fmt.Errorf("put network to store: %w", err)
 	}
-	if err = c.store.Put(ctx, "created_at", time.Now().UTC().Format(time.RFC3339)); err != nil {
+	if err := c.store.Put(ctx, "created_at", time.Now().UTC().Format(time.RFC3339)); err != nil {
 		return fmt.Errorf("put created_at to store: %w", err)
 	}
 	return nil
 }
 
-func (c *Cluster) Initialised(ctx context.Context) (bool, error) {
-	var createdAt string
-	if err := c.store.Get(ctx, "created_at", &createdAt); err != nil {
-		if errors.Is(err, store.ErrKeyNotFound) {
-			return false, nil
-		}
-		return false, status.Errorf(codes.Internal, "get created_at from store: %v", err)
-	}
-	return true, nil
-}
-
-func (c *Cluster) checkInitialised(ctx context.Context) error {
-	initialised, err := c.Initialised(ctx)
-	if err != nil {
-		return err
-	}
-	if !initialised {
-		return status.Error(codes.FailedPrecondition, "cluster is not initialised")
-	}
+// checkReady checks if the machine is ready to serve cluster requests (store synced, cluster components started).
+func (c *Cluster) checkReady() error {
+	select {
+	case <-c.ready:
 		return nil
+	default:
+		return status.Error(codes.Unavailable, "machine is not ready to serve cluster requests")
 	}
-
-func (c *Cluster) Network(ctx context.Context) (netip.Prefix, error) {
-	if err := c.checkInitialised(ctx); err != nil {
-		return netip.Prefix{}, err
-	}
-
-	var net string
-	if err := c.store.Get(ctx, "network", &net); err != nil {
-		return netip.Prefix{}, status.Errorf(codes.Internal, "get network from store: %v", err)
-	}
-	prefix, err := netip.ParsePrefix(net)
-	if err != nil {
-		return netip.Prefix{}, status.Errorf(codes.Internal, "parse network prefix: %v", err)
-	}
-	return prefix, nil
 }
 
 // AddMachine adds a machine to the cluster.
 func (c *Cluster) AddMachine(ctx context.Context, req *pb.AddMachineRequest) (*pb.AddMachineResponse, error) {
-	if err := c.checkInitialised(ctx); err != nil {
+	if err := c.checkReady(); err != nil {
 		return nil, err
 	}
 
+	return c.AddMachineWithoutReadyCheck(ctx, req)
+}
+
+// AddMachineWithoutReadyCheck adds a machine to the cluster without checking if the cluster is ready.
+// This is used internally during cluster initialisation to add the first machine.
+func (c *Cluster) AddMachineWithoutReadyCheck(
+	ctx context.Context, req *pb.AddMachineRequest,
+) (*pb.AddMachineResponse, error) {
 	if req.Network == nil {
 		return nil, status.Error(codes.InvalidArgument, "network not set")
 	}
@@ -162,7 +147,7 @@ func (c *Cluster) AddMachine(ctx context.Context, req *pb.AddMachineRequest) (*p
 		manageIP = pb.NewIP(network.ManagementIP(req.Network.PublicKey))
 	}
 	// Allocate a subnet for the machine from the cluster network.
-	clusterNetwork, err := c.Network(ctx)
+	clusterNetwork, err := c.network(ctx)
 	if err != nil {
 		return nil, status.Errorf(codes.Internal, "get cluster network: %v", err)
 	}
@@ -198,9 +183,21 @@ func (c *Cluster) AddMachine(ctx context.Context, req *pb.AddMachineRequest) (*p
 	return resp, nil
 }
 
+func (c *Cluster) network(ctx context.Context) (netip.Prefix, error) {
+	var net string
+	if err := c.store.Get(ctx, "network", &net); err != nil {
+		return netip.Prefix{}, status.Errorf(codes.Internal, "get network from store: %v", err)
+	}
+	prefix, err := netip.ParsePrefix(net)
+	if err != nil {
+		return netip.Prefix{}, status.Errorf(codes.Internal, "parse network prefix: %v", err)
+	}
+	return prefix, 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 {
+	if err := c.checkReady(); err != nil {
 		return nil, err
 	}
 
@@ -283,7 +280,7 @@ func (c *Cluster) UpdateMachine(ctx context.Context, req *pb.UpdateMachineReques
 
 // 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 {
+	if err := c.checkReady(); err != nil {
 		return nil, err
 	}
 
@@ -329,7 +326,7 @@ func (c *Cluster) ListMachines(ctx context.Context, _ *emptypb.Empty) (*pb.ListM
 
 // 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 {
+	if err := c.checkReady(); err != nil {
 		return nil, err
 	}
 

internal/machine/cluster/dns.go

@@ -25,7 +25,7 @@ type uncloudDNSDomain struct {
 }
 
 func (c *Cluster) ReserveDomain(ctx context.Context, req *pb.ReserveDomainRequest) (*pb.Domain, error) {
-	if err := c.checkInitialised(ctx); err != nil {
+	if err := c.checkReady(); err != nil {
 		return nil, err
 	}
 
@@ -64,7 +64,7 @@ func (c *Cluster) ReserveDomain(ctx context.Context, req *pb.ReserveDomainReques
 }
 
 func (c *Cluster) GetDomain(ctx context.Context, _ *emptypb.Empty) (*pb.Domain, error) {
-	if err := c.checkInitialised(ctx); err != nil {
+	if err := c.checkReady(); err != nil {
 		return nil, err
 	}
 
@@ -95,7 +95,7 @@ func (c *Cluster) storedDomain(ctx context.Context) (uncloudDNSDomain, error) {
 }
 
 func (c *Cluster) ReleaseDomain(ctx context.Context, _ *emptypb.Empty) (*pb.Domain, error) {
-	if err := c.checkInitialised(ctx); err != nil {
+	if err := c.checkReady(); err != nil {
 		return nil, err
 	}
 
@@ -115,7 +115,7 @@ func (c *Cluster) ReleaseDomain(ctx context.Context, _ *emptypb.Empty) (*pb.Doma
 func (c *Cluster) CreateDomainRecords(
 	ctx context.Context, req *pb.CreateDomainRecordsRequest,
 ) (*pb.CreateDomainRecordsResponse, error) {
-	if err := c.checkInitialised(ctx); err != nil {
+	if err := c.checkReady(); err != nil {
 		return nil, err
 	}
 

internal/machine/docker/server.go

@@ -605,6 +605,8 @@ func (s *Server) CreateServiceContainer(
 		}
 	}
 	hostConfig := &container.HostConfig{
+		CapAdd:       spec.Container.CapAdd,
+		CapDrop:      spec.Container.CapDrop,
 		Binds:        spec.Container.Volumes,
 		Init:         spec.Container.Init,
 		Mounts:       mounts,
@@ -621,6 +623,7 @@ func (s *Server) CreateServiceContainer(
 		RestartPolicy: container.RestartPolicy{
 			Name: container.RestartPolicyUnlessStopped,
 		},
+		Sysctls: spec.Container.Sysctls,
 	}
 
 	// Configure the container to use the internal DNS server if it's available.
@@ -801,14 +804,17 @@ func (s *Server) injectConfigs(ctx context.Context, containerID string, configs
 }
 
 // copyContentToContainer copies content directly to a file in the container using Docker's CopyToContainer API.
+// It will create any intermediate directories in the target path that don't exist.
 func (s *Server) copyContentToContainer(ctx context.Context, containerID string, content []byte, targetPath string, uid *uint64, gid *uint64, fileMode os.FileMode) error {
-	// Create a tar archive containing the file
 	var buf bytes.Buffer
 	tw := tar.NewWriter(&buf)
 
-	// Create tar header
+	// Trim leading slash(es) to avoid double slashes in the tar path
+	tarPath := strings.TrimPrefix(targetPath, "/")
+
+	// Create tar header with full path
 	header := &tar.Header{
-		Name:     filepath.Base(targetPath),
+		Name:     tarPath,
 		Size:     int64(len(content)),
 		Mode:     int64(fileMode),
 		ModTime:  time.Now(),
@@ -834,16 +840,12 @@ func (s *Server) copyContentToContainer(ctx context.Context, containerID string,
 		return fmt.Errorf("close tar writer: %w", err)
 	}
 
-	// Copy the tar archive to the container
-	targetDir := filepath.Dir(targetPath)
-	if targetDir == "." {
-		targetDir = "/"
-	}
-
+	// Always extract to root. The tar archive contains the full path, so tar will
+	// automatically create any intermediate directories that don't exist in the container.
 	if err := s.client.CopyToContainer(
 		ctx,
 		containerID,
-		targetDir,
+		"/",
 		&buf,
 		container.CopyToContainerOptions{CopyUIDGID: true},
 	); err != nil {

internal/machine/machine.go

@@ -33,10 +33,12 @@ import (
 	"github.com/psviderski/unregistry"
 	"github.com/siderolabs/grpc-proxy/proxy"
 	"golang.org/x/sync/errgroup"
+	"golang.zx2c4.com/wireguard/wgctrl"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 	"google.golang.org/protobuf/types/known/emptypb"
+	"google.golang.org/protobuf/types/known/timestamppb"
 )
 
 const (
@@ -174,10 +176,13 @@ type Machine struct {
 	state  *State
 	// started is closed when the machine is ready to serve requests on the local API server.
 	started chan struct{}
-	// initialised is signalled when the machine is configured as a member of a cluster.
+	// initialised is closed 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 is closed when the Docker network is configured and ready for containers.
 	networkReady chan struct{}
+	// clusterReady is closed when the cluster controller has finished starting all components
+	// and the machine is ready to serve cluster requests.
+	clusterReady chan struct{}
 	// resetting is true when the machine is being reset.
 	resetting bool
 	// stop cancels the Run method context to stop the machine gracefully.
@@ -246,7 +251,10 @@ func NewMachine(config *Config) (*Machine, error) {
 	if err != nil {
 		return nil, fmt.Errorf("create corrosion admin client: %w", err)
 	}
-	c := cluster.NewCluster(corroStore, corroAdmin)
+
+	initialised := make(chan struct{})
+	clusterReady := make(chan struct{})
+	c := cluster.NewCluster(corroStore, corroAdmin, initialised, clusterReady)
 
 	// Init dependencies for a gRPC Docker server that proxies requests to the local Docker daemon.
 	dbFilePath := filepath.Join(config.DataDir, DBFileName)
@@ -269,8 +277,9 @@ func NewMachine(config *Config) (*Machine, error) {
 		config:           *config,
 		state:            state,
 		started:          make(chan struct{}),
-		initialised:      make(chan struct{}, 1),
+		initialised:      initialised,
 		networkReady:     make(chan struct{}),
+		clusterReady:     clusterReady,
 		store:            corroStore,
 		cluster:          c,
 		dockerService:    dockerService,
@@ -294,7 +303,7 @@ func NewMachine(config *Config) (*Machine, error) {
 	m.localMachineServer = newGRPCServer(m, c, m.dockerServer, caddyServer)
 
 	if m.Initialised() {
-		m.initialised <- struct{}{}
+		close(m.initialised)
 	}
 
 	return m, nil
@@ -475,6 +484,7 @@ func (m *Machine) Run(ctx context.Context) error {
 				m.config.CorrosionService,
 				m.dockerService,
 				m.networkReady,
+				m.clusterReady,
 				caddyconfigCtrl,
 				dnsServer,
 				dnsResolver,
@@ -722,7 +732,7 @@ func (m *Machine) InitCluster(ctx context.Context, req *pb.InitClusterRequest) (
 		addReq.PublicIp = pb.NewIP(publicIP)
 	}
 
-	addResp, err := m.cluster.AddMachine(ctx, addReq)
+	addResp, err := m.cluster.AddMachineWithoutReadyCheck(ctx, addReq)
 	if err != nil {
 		return nil, status.Errorf(codes.Internal, "add machine to cluster: %v", err)
 	}
@@ -749,7 +759,7 @@ func (m *Machine) InitCluster(ctx context.Context, req *pb.InitClusterRequest) (
 	}
 	slog.Info("Cluster initialised with machine.", "id", m.state.ID, "machine", m.state.Name)
 	// Signal that the machine is initialised as a member of a cluster.
-	m.initialised <- struct{}{}
+	close(m.initialised)
 
 	resp := &pb.InitClusterResponse{
 		Machine: addResp.Machine,
@@ -792,6 +802,7 @@ func (m *Machine) JoinCluster(_ context.Context, req *pb.JoinClusterRequest) (*e
 		PrivateKey:   m.state.Network.PrivateKey,
 		PublicKey:    m.state.Network.PublicKey,
 	}
+	m.state.MinStoreDBVersion = req.MinStoreDbVersion
 
 	// Build a peers config from other cluster machines.
 	m.state.Network.Peers = make([]network.PeerConfig, 0, len(req.OtherMachines))
@@ -830,7 +841,7 @@ func (m *Machine) JoinCluster(_ context.Context, req *pb.JoinClusterRequest) (*e
 		"peers", len(m.state.Network.Peers),
 	)
 	// Signal that the machine is initialised as a member of a cluster.
-	m.initialised <- struct{}{}
+	close(m.initialised)
 
 	return &emptypb.Empty{}, nil
 }
@@ -864,6 +875,7 @@ func (m *Machine) Token(_ context.Context, _ *emptypb.Empty) (*pb.TokenResponse,
 	return &pb.TokenResponse{Token: tokenStr}, nil
 }
 
+// Deprecated: use InspectMachine instead.
 func (m *Machine) Inspect(_ context.Context, _ *emptypb.Empty) (*pb.MachineInfo, error) {
 	return &pb.MachineInfo{
 		Id:   m.state.ID,
@@ -876,6 +888,31 @@ func (m *Machine) Inspect(_ context.Context, _ *emptypb.Empty) (*pb.MachineInfo,
 	}, nil
 }
 
+func (m *Machine) InspectMachine(ctx context.Context, _ *emptypb.Empty) (*pb.InspectMachineResponse, error) {
+	dbVersion, err := m.store.DBVersion(ctx)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "get database version of the cluster store: %v", err)
+	}
+
+	return &pb.InspectMachineResponse{
+		Machines: []*pb.MachineDetails{
+			{
+				// Metadata is injected by the gRPC proxy.
+				Machine: &pb.MachineInfo{
+					Id:   m.state.ID,
+					Name: m.state.Name,
+					Network: &pb.NetworkConfig{
+						Subnet:       pb.NewIPPrefix(m.state.Network.Subnet),
+						ManagementIp: pb.NewIP(m.state.Network.ManagementIP),
+						PublicKey:    m.state.Network.PublicKey,
+					},
+				},
+				StoreDbVersion: dbVersion,
+			},
+		},
+	}, nil
+}
+
 // IsNetworkReady returns true if the Docker network is ready for containers.
 func (m *Machine) IsNetworkReady() bool {
 	if !m.Initialised() {
@@ -909,6 +946,58 @@ func (m *Machine) WaitForNetworkReady(ctx context.Context) error {
 	}
 }
 
+// InspectWireGuardNetwork retrieves the current WireGuard network configuration and peer status.
+func (m *Machine) InspectWireGuardNetwork(
+	_ context.Context, _ *emptypb.Empty,
+) (*pb.InspectWireGuardNetworkResponse, error) {
+	deviceName := network.WireGuardInterfaceName
+
+	wg, err := wgctrl.New()
+	if err != nil {
+		return nil, fmt.Errorf("create WireGuard client: %w", err)
+	}
+	defer wg.Close()
+
+	dev, err := wg.Device(deviceName)
+	if err != nil {
+		return nil, fmt.Errorf("get WireGuard device '%s': %w", deviceName, err)
+	}
+
+	peers := make([]*pb.WireGuardPeer, len(dev.Peers))
+	for i, p := range dev.Peers {
+		var lastHandshake *timestamppb.Timestamp
+		if !p.LastHandshakeTime.IsZero() {
+			lastHandshake = timestamppb.New(p.LastHandshakeTime)
+		}
+
+		allowedIPs := make([]string, len(p.AllowedIPs))
+		for j, ip := range p.AllowedIPs {
+			allowedIPs[j] = ip.String()
+		}
+
+		var endpoint string
+		if p.Endpoint != nil {
+			endpoint = p.Endpoint.String()
+		}
+
+		peers[i] = &pb.WireGuardPeer{
+			PublicKey:         p.PublicKey[:],
+			Endpoint:          endpoint,
+			LastHandshakeTime: lastHandshake,
+			ReceiveBytes:      p.ReceiveBytes,
+			TransmitBytes:     p.TransmitBytes,
+			AllowedIps:        allowedIPs,
+		}
+	}
+
+	return &pb.InspectWireGuardNetworkResponse{
+		InterfaceName: dev.Name,
+		PublicKey:     dev.PublicKey[:],
+		ListenPort:    int32(dev.ListenPort),
+		Peers:         peers,
+	}, nil
+}
+
 // 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) {

internal/machine/state.go

@@ -24,6 +24,9 @@ type State struct {
 	Name string
 	// Network specifies the network configuration for this machine.
 	Network *network.Config
+	// MinStoreDBVersion is the latest database version of one of the existing cluster machines at the time this machine
+	// joined the cluster. The machine should sync to at least this version before starting any cluster operations.
+	MinStoreDBVersion int64 `json:",omitempty"`
 
 	// path is the file path config is read from and saved to.
 	path string
@@ -66,7 +69,7 @@ func (c *State) Encode() ([]byte, error) {
 	return data, nil
 }
 
-// Save writes the state data to the file at the given path.
+// Save atomically writes the state data to the file at the configured path.
 func (c *State) Save() error {
 	if c.path == "" {
 		return fmt.Errorf("state path not set")
@@ -80,5 +83,37 @@ func (c *State) Save() error {
 	if err != nil {
 		return err
 	}
-	return os.WriteFile(c.path, data, 0o600)
+
+	// Write to a temporary file and rename for atomic save. CreateTemp creates a file with mode 0o600.
+	tmpFile, err := os.CreateTemp(dir, ".machine.json.*")
+	if err != nil {
+		return fmt.Errorf("create temp file: %w", err)
+	}
+	tmpPath := tmpFile.Name()
+
+	// Clean up temp file on error.
+	defer func() {
+		if err != nil {
+			os.Remove(tmpPath)
+		}
+	}()
+
+	if _, err = tmpFile.Write(data); err != nil {
+		tmpFile.Close()
+		return fmt.Errorf("write temp file: %w", err)
+	}
+	// Without fsync, the data may only be in the OS buffer cache. If the system crashes before the OS flushes
+	// it to disk, the file could be empty or corrupted even after rename.
+	if err = tmpFile.Sync(); err != nil {
+		tmpFile.Close()
+		return fmt.Errorf("sync temp file: %w", err)
+	}
+	if err = tmpFile.Close(); err != nil {
+		return fmt.Errorf("close temp file: %w", err)
+	}
+	if err = os.Rename(tmpPath, c.path); err != nil {
+		return fmt.Errorf("rename temp file: %w", err)
+	}
+
+	return nil
 }

internal/machine/store/container.go

@@ -82,7 +82,7 @@ func (s *Store) CreateOrUpdateContainer(ctx context.Context, ctr api.ServiceCont
 
 // ListContainers returns a list of container records from the store database that match the given options.
 func (s *Store) ListContainers(ctx context.Context, opts ListOptions) ([]ContainerRecord, error) {
-	q := sq.Select("container", "machine_id", "sync_status", "updated_at").From("containers").
+	q := sq.Select("id", "container", "machine_id", "sync_status", "updated_at").From("containers").
 		Where(sq.Eq{"sync_status": SyncStatusSynced})
 
 	if len(opts.MachineIDs) > 0 {
@@ -112,14 +112,23 @@ func (s *Store) ListContainers(ctx context.Context, opts ListOptions) ([]Contain
 	defer rows.Close()
 
 	var containers []ContainerRecord
-	var cJSON, machineID, syncStatus, updatedAtStr string
+	var id, cJSON, machineID, syncStatus, updatedAtStr string
 	var updatedAt time.Time
+	skipped := 0
 
 	for rows.Next() {
-		if err = rows.Scan(&cJSON, &machineID, &syncStatus, &updatedAtStr); err != nil {
+		if err = rows.Scan(&id, &cJSON, &machineID, &syncStatus, &updatedAtStr); err != nil {
 			return nil, fmt.Errorf("scan container record: %w", err)
 		}
 
+		// Skip containers with empty JSON data. This can happen during partial replication
+		// when cr-sqlite has created the row but the container column hasn't been synced yet.
+		if cJSON == "" || cJSON == "{}" {
+			slog.Debug("Skipping container with empty data in the store (partial replication?).", "id", id)
+			skipped++
+			continue
+		}
+
 		var c api.ServiceContainer
 		if err = json.Unmarshal([]byte(cJSON), &c); err != nil {
 			return nil, fmt.Errorf("unmarshal container: %w", err)
@@ -135,6 +144,11 @@ func (s *Store) ListContainers(ctx context.Context, opts ListOptions) ([]Contain
 		})
 	}
 
+	if skipped > 0 {
+		slog.Warn("Listing containers from the store skipped empty records (possibly due to partial replication).",
+			"skipped", skipped, "valid", len(containers))
+	}
+
 	return containers, nil
 }
 
@@ -166,7 +180,7 @@ func (s *Store) DeleteContainers(ctx context.Context, opts DeleteOptions) error
 // receive any values, it just signals when a container(s) has been added, updated, or deleted in the database.
 func (s *Store) SubscribeContainers(ctx context.Context) ([]ContainerRecord, <-chan struct{}, error) {
 	// TODO: figure out whether we need sync_status at all (not used at the moment).
-	q := sq.Select("container", "machine_id", "sync_status", "updated_at").From("containers").
+	q := sq.Select("id", "container", "machine_id", "sync_status", "updated_at").From("containers").
 		Where(sq.Eq{"sync_status": SyncStatusSynced})
 	query, args, err := q.ToSql()
 	if err != nil {
@@ -179,15 +193,24 @@ func (s *Store) SubscribeContainers(ctx context.Context) ([]ContainerRecord, <-c
 	}
 
 	var containers []ContainerRecord
-	var cJSON, updatedAtStr string
+	var id, cJSON, updatedAtStr string
+	skipped := 0
 
 	rows := sub.Rows()
 	for rows.Next() {
 		var cr ContainerRecord
-		if err = rows.Scan(&cJSON, &cr.MachineID, &cr.SyncStatus, &updatedAtStr); err != nil {
+		if err = rows.Scan(&id, &cJSON, &cr.MachineID, &cr.SyncStatus, &updatedAtStr); err != nil {
 			return nil, nil, err
 		}
 
+		// Skip containers with empty JSON data. This can happen during partial replication
+		// when cr-sqlite has created the row but the container column hasn't been synced yet.
+		if cJSON == "" || cJSON == "{}" {
+			slog.Debug("Skipping container with empty data in the store (partial replication?).", "id", id)
+			skipped++
+			continue
+		}
+
 		if err = json.Unmarshal([]byte(cJSON), &cr.Container); err != nil {
 			return nil, nil, fmt.Errorf("unmarshal container: %w", err)
 		}
@@ -196,6 +219,12 @@ func (s *Store) SubscribeContainers(ctx context.Context) ([]ContainerRecord, <-c
 		}
 		containers = append(containers, cr)
 	}
+
+	if skipped > 0 {
+		slog.Warn("Container subscription skipped empty records in the store (possibly due to partial replication).",
+			"skipped", skipped, "valid", len(containers))
+	}
+
 	events, err := sub.Changes()
 	if err != nil {
 		return nil, nil, fmt.Errorf("get subscription changes: %w", err)

internal/machine/store/store.go

@@ -56,6 +56,25 @@ func (s *Store) Delete(ctx context.Context, key string) error {
 	return err
 }
 
+// DBVersion returns the current cr-sqlite database version (Lamport timestamp).
+func (s *Store) DBVersion(ctx context.Context) (int64, error) {
+	rows, err := s.corro.QueryContext(ctx, "SELECT crsql_db_version()")
+	if err != nil {
+		return 0, fmt.Errorf("query crsql_db_version(): %w", err)
+	}
+	defer rows.Close()
+
+	if !rows.Next() {
+		return 0, fmt.Errorf("no result from crsql_db_version()")
+	}
+
+	var version int64
+	if err = rows.Scan(&version); err != nil {
+		return 0, fmt.Errorf("scan db version: %w", err)
+	}
+	return version, nil
+}
+
 func (s *Store) CreateMachine(ctx context.Context, m *pb.MachineInfo) error {
 	mJSON, err := protojson.Marshal(m)
 	if err != nil {
@@ -116,19 +135,29 @@ func (s *Store) GetMachine(ctx context.Context, machineID string) (*pb.MachineIn
 }
 
 func (s *Store) ListMachines(ctx context.Context) ([]*pb.MachineInfo, error) {
-	rows, err := s.corro.QueryContext(ctx, "SELECT info FROM machines ORDER BY name")
+	rows, err := s.corro.QueryContext(ctx, "SELECT id, info FROM machines ORDER BY name")
 	if err != nil {
 		return nil, err
 	}
 	defer rows.Close()
 
 	var machines []*pb.MachineInfo
+	skipped := 0
+
 	for rows.Next() {
-		var mJSON string
-		if err = rows.Scan(&mJSON); err != nil {
+		var id, mJSON string
+		if err = rows.Scan(&id, &mJSON); err != nil {
 			return nil, err
 		}
 
+		// Skip machines with empty JSON data. This can happen during partial replication
+		// when cr-sqlite has created the row but the info column hasn't been synced yet.
+		if mJSON == "" || mJSON == "{}" {
+			slog.Debug("Skipping machine with empty data in the store (partial replication?).", "id", id)
+			skipped++
+			continue
+		}
+
 		protojsonParser := protojson.UnmarshalOptions{DiscardUnknown: true}
 		var m pb.MachineInfo
 		if err = protojsonParser.Unmarshal([]byte(mJSON), &m); err != nil {
@@ -141,6 +170,12 @@ func (s *Store) ListMachines(ctx context.Context) ([]*pb.MachineInfo, error) {
 		}
 		machines = append(machines, &m)
 	}
+
+	if skipped > 0 {
+		slog.Warn("Listing machines from the store skipped empty records (possibly due to partial replication).",
+			"skipped", skipped, "valid", len(machines))
+	}
+
 	return machines, nil
 }
 
@@ -186,24 +221,41 @@ func (s *Store) DeleteMachine(ctx context.Context, id string) error {
 // SubscribeMachines returns a list of machines and a channel that signals changes to the list. The channel doesn't
 // receive any values, it just signals when a machine has been added, updated, or deleted in the database.
 func (s *Store) SubscribeMachines(ctx context.Context) ([]*pb.MachineInfo, <-chan struct{}, error) {
-	sub, err := s.corro.SubscribeContext(ctx, "SELECT info FROM machines ORDER BY name", nil, false)
+	sub, err := s.corro.SubscribeContext(ctx, "SELECT id, info FROM machines ORDER BY name", nil, false)
 	if err != nil {
 		return nil, nil, err
 	}
 
 	rows := sub.Rows()
 	var machines []*pb.MachineInfo
+	skipped := 0
+
 	for rows.Next() {
-		var mJSON string
-		if err = rows.Scan(&mJSON); err != nil {
+		var id, mJSON string
+		if err = rows.Scan(&id, &mJSON); err != nil {
 			return nil, nil, err
 		}
+
+		// Skip machines with empty JSON data. This can happen during partial replication
+		// when cr-sqlite has created the row but the info column hasn't been synced yet.
+		if mJSON == "" || mJSON == "{}" {
+			slog.Debug("Skipping machine with empty data in the store (partial replication?).", "id", id)
+			skipped++
+			continue
+		}
+
 		var m pb.MachineInfo
 		if err = protojson.Unmarshal([]byte(mJSON), &m); err != nil {
 			return nil, nil, fmt.Errorf("unmarshal machine info: %w", err)
 		}
 		machines = append(machines, &m)
 	}
+
+	if skipped > 0 {
+		slog.Warn("Machine subscription skipped empty records in the store (possibly due to partial replication).",
+			"skipped", skipped, "valid", len(machines))
+	}
+
 	events, err := sub.Changes()
 	if err != nil {
 		return nil, nil, fmt.Errorf("get subscription changes: %w", err)

internal/ucind/cluster.go

@@ -119,17 +119,16 @@ func (p *Provisioner) CreateCluster(ctx context.Context, name string, opts Creat
 func (p *Provisioner) initCluster(ctx context.Context, machines []Machine) error {
 	// Init a new cluster on the first machine.
 	initMachine := machines[0]
-
-	if err := WaitMachineReady(ctx, initMachine, 30*time.Second); err != nil {
-		return fmt.Errorf("wait for machine %q to be ready: %w", initMachine.Name, err)
-	}
-
 	initClient, err := initMachine.Connect(ctx)
 	if err != nil {
 		return fmt.Errorf("create machine client over TCP '%s': %w", initMachine.APIAddress, err)
 	}
 	defer initClient.Close()
 
+	if err := initClient.WaitMachineReady(ctx, 30*time.Second); err != nil {
+		return fmt.Errorf("wait for machine %q to be ready: %w", initMachine.Name, err)
+	}
+
 	req := &pb.InitClusterRequest{
 		MachineName: initMachine.Name,
 		Network:     pb.NewIPPrefix(cluster.DefaultNetwork),
@@ -138,14 +137,22 @@ func (p *Provisioner) initCluster(ctx context.Context, machines []Machine) error
 	if err != nil {
 		return fmt.Errorf("init cluster: %w", err)
 	}
+
 	fmt.Printf("Cluster %q initialised with machine %q\n", initMachine.ClusterName, initResp.Machine.Name)
+	fmt.Printf("Waiting for cluster to be ready...")
+	if err = initClient.WaitClusterReady(ctx, 30*time.Second); err != nil {
+		return fmt.Errorf("wait for cluster to be ready: %w", err)
+	}
+	fmt.Println(" done.")
+
+	// Get the current store DB version from the init machine to pass to the join requests.
+	inspectResp, err := initClient.MachineClient.InspectMachine(ctx, &emptypb.Empty{})
+	if err != nil {
+		return fmt.Errorf("inspect init machine: %w", err)
+	}
 
 	// Join the rest of the machines to the cluster.
 	for _, m := range machines[1:] {
-		if err = WaitMachineReady(ctx, m, 30*time.Second); err != nil {
-			return fmt.Errorf("wait for machine %q to be ready: %w", m.Name, err)
-		}
-
 		cli, err := m.Connect(ctx)
 		if err != nil {
 			return fmt.Errorf("create machine client over TCP '%s': %w", m.APIAddress, err)
@@ -153,6 +160,10 @@ func (p *Provisioner) initCluster(ctx context.Context, machines []Machine) error
 		//goland:noinspection GoDeferInLoop
 		defer cli.Close()
 
+		if err := cli.WaitMachineReady(ctx, 30*time.Second); err != nil {
+			return fmt.Errorf("wait for machine %q to be ready: %w", m.Name, err)
+		}
+
 		tokenResp, err := cli.Token(ctx, &emptypb.Empty{})
 		if err != nil {
 			return fmt.Errorf("get machine token: %w", err)
@@ -183,6 +194,7 @@ func (p *Provisioner) initCluster(ctx context.Context, machines []Machine) error
 		joinReq := &pb.JoinClusterRequest{
 			Machine:           addResp.Machine,
 			OtherMachines:     []*pb.MachineInfo{initResp.Machine},
+			MinStoreDbVersion: inspectResp.Machines[0].StoreDbVersion,
 		}
 		if _, err = cli.JoinCluster(ctx, joinReq); err != nil {
 			return fmt.Errorf("join cluster: %w", err)
@@ -256,16 +268,16 @@ func (p *Provisioner) InspectCluster(ctx context.Context, name string) (Cluster,
 // WaitClusterReady waits for all machines in the cluster to be ready and UP.
 func (p *Provisioner) WaitClusterReady(ctx context.Context, c Cluster, timeout time.Duration) error {
 	firstMachine := c.Machines[0]
-	if err := WaitMachineReady(ctx, firstMachine, timeout); err != nil {
-		return fmt.Errorf("wait for machine '%s' to be ready: %w", firstMachine.Name, err)
-	}
-
 	cli, err := firstMachine.Connect(ctx)
 	if err != nil {
 		return fmt.Errorf("connect to machine over TCP '%s': %w", firstMachine.APIAddress, err)
 	}
 	defer cli.Close()
 
+	if err = cli.WaitClusterReady(ctx, timeout); err != nil {
+		return fmt.Errorf("wait for cluster to be ready: %w", err)
+	}
+
 	boff := backoff.WithContext(backoff.NewExponentialBackOff(
 		backoff.WithInitialInterval(100*time.Millisecond),
 		backoff.WithMaxInterval(1*time.Second),
@@ -289,7 +301,25 @@ func (p *Provisioner) WaitClusterReady(ctx context.Context, c Cluster, timeout t
 		}
 		return nil
 	}
-	return backoff.Retry(checkMachinesUp, boff)
+	if err = backoff.Retry(checkMachinesUp, boff); err != nil {
+		return err
+	}
+
+	// Wait for each machine to sync the cluster store and be ready to serve cluster requests.
+	for _, m := range c.Machines[1:] {
+		mcli, err := m.Connect(ctx)
+		if err != nil {
+			return fmt.Errorf("connect to machine over TCP '%s': %w", m.APIAddress, err)
+		}
+		//goland:noinspection GoDeferInLoop
+		defer mcli.Close()
+
+		if err = mcli.WaitClusterReady(ctx, timeout); err != nil {
+			return fmt.Errorf("wait for cluster to be ready on machine '%s': %w", m.Name, err)
+		}
+	}
+
+	return nil
 }
 
 func (p *Provisioner) RemoveCluster(ctx context.Context, name string) error {

internal/ucind/machine.go

@@ -9,7 +9,6 @@ import (
 	"net/netip"
 	"time"
 
-	"github.com/cenkalti/backoff/v4"
 	"github.com/containerd/errdefs"
 	"github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/image"
@@ -17,7 +16,6 @@ import (
 	"github.com/psviderski/uncloud/internal/secret"
 	"github.com/psviderski/uncloud/pkg/client"
 	"github.com/psviderski/uncloud/pkg/client/connector"
-	"google.golang.org/protobuf/types/known/emptypb"
 )
 
 const (
@@ -194,26 +192,3 @@ func randomMachineName() (string, error) {
 	}
 	return "machine-" + suffix, nil
 }
-
-// WaitMachineReady waits for the machine API to respond.
-func WaitMachineReady(ctx context.Context, m Machine, timeout time.Duration) error {
-	cli, err := m.Connect(ctx)
-	if err != nil {
-		return fmt.Errorf("connect to machine over TCP '%s': %w", m.APIAddress, err)
-	}
-	defer cli.Close()
-
-	boff := backoff.WithContext(backoff.NewExponentialBackOff(
-		backoff.WithInitialInterval(100*time.Millisecond),
-		backoff.WithMaxInterval(10*time.Second),
-		backoff.WithMaxElapsedTime(timeout),
-	), ctx)
-
-	inspect := func() error {
-		if _, err := cli.Inspect(ctx, &emptypb.Empty{}); err != nil {
-			return fmt.Errorf("inspect machine: %w", err)
-		}
-		return nil
-	}
-	return backoff.Retry(inspect, boff)
-}

pkg/api/config.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"sort"
 	"strconv"
 )
 
@@ -98,6 +99,76 @@ func (c *ConfigMount) Validate() error {
 	return nil
 }
 
+// Compare compares this ConfigMount with another.
+// Returns:
+//
+//	-1 if c < other
+//	 0 if c == other
+//	+1 if c > other
+func (c *ConfigMount) Compare(other *ConfigMount) int {
+	if c.ConfigName != other.ConfigName {
+		if c.ConfigName < other.ConfigName {
+			return -1
+		}
+		return 1
+	}
+	if c.ContainerPath != other.ContainerPath {
+		if c.ContainerPath < other.ContainerPath {
+			return -1
+		}
+		return 1
+	}
+	if c.Uid != other.Uid {
+		if c.Uid < other.Uid {
+			return -1
+		}
+		return 1
+	}
+	if c.Gid != other.Gid {
+		if c.Gid < other.Gid {
+			return -1
+		}
+		return 1
+	}
+	// Compare Mode (handle nil cases)
+	if c.Mode == nil && other.Mode != nil {
+		return -1
+	}
+	if c.Mode != nil && other.Mode == nil {
+		return 1
+	}
+	if c.Mode != nil && other.Mode != nil {
+		if *c.Mode < *other.Mode {
+			return -1
+		}
+		if *c.Mode > *other.Mode {
+			return 1
+		}
+	}
+	return 0
+}
+
+// Equals compares two ConfigMount instances for equality.
+func (c *ConfigMount) Equals(other *ConfigMount) bool {
+	return c.Compare(other) == 0
+}
+
+func (c *ConfigMount) Clone() ConfigMount {
+	clone := *c
+	if c.Mode != nil {
+		mode := *c.Mode
+		clone.Mode = &mode
+	}
+	return clone
+}
+
+// sortConfigMounts sorts a slice of ConfigMount instances.
+func sortConfigMounts(mounts []ConfigMount) {
+	sort.Slice(mounts, func(i, j int) bool {
+		return mounts[i].Compare(&mounts[j]) < 0
+	})
+}
+
 // ValidateConfigsAndMounts takes config specs and config mounts and validates that all mounts refer to existing specs
 func ValidateConfigsAndMounts(configs []ConfigSpec, mounts []ConfigMount) error {
 	configMap := make(map[string]struct{})

pkg/api/container.go

@@ -135,6 +135,10 @@ func (c *Container) UnmarshalJSON(data []byte) error {
 	}
 
 	*c = Container(temp)
+	if c.ContainerJSONBase == nil {
+		return fmt.Errorf("container data is missing mandatory base fields: %s", data)
+	}
+
 	c.Name = strings.TrimPrefix(c.Name, "/")
 
 	return nil

pkg/api/service.go

@@ -225,6 +225,10 @@ func (s *ServiceSpec) Clone() ServiceSpec {
 // ContainerSpec defines the desired state of a container in a service.
 // ATTENTION: after changing this struct, verify if deploy.EvalContainerSpecChange needs to be updated.
 type ContainerSpec struct {
+	// Specifies which additional capabilities should be added for the container.
+	CapAdd []string
+	// Specifies which capabilities should be dropped from the container.
+	CapDrop []string
 	// Command overrides the default CMD of the image to be executed when running a container.
 	Command []string
 	// Entrypoint overrides the default ENTRYPOINT of the image.
@@ -243,6 +247,8 @@ type ContainerSpec struct {
 	PullPolicy string
 	// Resource allocation for the container.
 	Resources ContainerResources
+	// Namespaced kernel parameters to be set in container
+	Sysctls map[string]string
 	// User overrides the default user of the image used to run the container. Format: user|UID[:group|GID].
 	User string
 	// VolumeMounts specifies how volumes are mounted into the container filesystem.
@@ -290,18 +296,32 @@ func (s *ContainerSpec) Equals(spec ContainerSpec) bool {
 	orig := s.SetDefaults()
 	spec = spec.SetDefaults()
 
+	// Volumes
 	slices.Sort(orig.Volumes)
 	slices.Sort(spec.Volumes)
 
+	// Volume mounts
 	sortVolumeMounts(orig.VolumeMounts)
 	sortVolumeMounts(spec.VolumeMounts)
 
+	// Config mounts
+	sortConfigMounts(orig.ConfigMounts)
+	sortConfigMounts(spec.ConfigMounts)
+
 	return cmp.Equal(orig, spec, cmpopts.EquateEmpty())
 }
 
 func (s *ContainerSpec) Clone() ContainerSpec {
 	spec := *s
 
+	if s.CapAdd != nil {
+		spec.CapAdd = make([]string, len(s.CapAdd))
+		copy(spec.CapAdd, s.CapAdd)
+	}
+	if s.CapDrop != nil {
+		spec.CapDrop = make([]string, len(s.CapDrop))
+		copy(spec.CapDrop, s.CapDrop)
+	}
 	if s.Command != nil {
 		spec.Command = make([]string, len(s.Command))
 		copy(spec.Command, s.Command)
@@ -317,6 +337,12 @@ func (s *ContainerSpec) Clone() ContainerSpec {
 		}
 		spec.LogDriver = &logDriver
 	}
+	if s.Env != nil {
+		spec.Env = make(EnvVars, len(s.Env))
+		for k, v := range s.Env {
+			spec.Env[k] = v
+		}
+	}
 	if s.Volumes != nil {
 		spec.Volumes = make([]string, len(s.Volumes))
 		copy(spec.Volumes, s.Volumes)
@@ -325,7 +351,18 @@ func (s *ContainerSpec) Clone() ContainerSpec {
 		spec.VolumeMounts = make([]VolumeMount, len(s.VolumeMounts))
 		copy(spec.VolumeMounts, s.VolumeMounts)
 	}
-
+	if s.ConfigMounts != nil {
+		spec.ConfigMounts = make([]ConfigMount, len(s.ConfigMounts))
+		for i, cm := range s.ConfigMounts {
+			spec.ConfigMounts[i] = cm.Clone()
+		}
+	}
+	if s.Sysctls != nil {
+		spec.Sysctls = make(map[string]string, len(s.Sysctls))
+		for k, v := range s.Sysctls {
+			spec.Sysctls[k] = v
+		}
+	}
 	return spec
 }
 

pkg/api/service_test.go

@@ -1,11 +1,19 @@
 package api
 
 import (
+	"os"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
+// boolPtr is a convenience function to create a pointer to a uint64 value
+// TODO: Make this a generic function that works for any type
+func boolPtr(b bool) *bool {
+	return &b
+}
+
 func TestServiceSpec_Validate_CaddyAndPorts(t *testing.T) {
 	tests := []struct {
 		name    string
@@ -197,3 +205,89 @@ func TestServiceSpec_Validate_CaddyAndPorts(t *testing.T) {
 		})
 	}
 }
+
+func TestContainerSpec_Clone(t *testing.T) {
+	mode := os.FileMode(0o644)
+	original := ContainerSpec{
+		CapAdd:     []string{"NET_ADMIN"},
+		CapDrop:    []string{"ALL"},
+		Command:    []string{"sh", "-c", "echo hello"},
+		Entrypoint: []string{"/bin/bash"},
+		Env: EnvVars{
+			"FOO": "bar",
+			"BAZ": "qux",
+		},
+		Image: "nginx:latest",
+		Init:  boolPtr(true),
+		LogDriver: &LogDriver{
+			Name: "json-file",
+			Options: map[string]string{
+				"max-size": "10m",
+			},
+		},
+		Privileged: true,
+		PullPolicy: PullPolicyAlways,
+		Resources: ContainerResources{
+			CPU:               1234,
+			Memory:            2345,
+			MemoryReservation: 3456,
+		},
+		Sysctls: map[string]string{
+			"net.ipv4.ip_forward": "1",
+		},
+		User:    "1000:1000",
+		Volumes: []string{"/data", "/config"},
+		VolumeMounts: []VolumeMount{
+			{VolumeName: "data", ContainerPath: "/data"},
+		},
+		ConfigMounts: []ConfigMount{
+			{ConfigName: "app-config", ContainerPath: "/etc/config", Mode: &mode},
+		},
+	}
+
+	cloned := original.Clone()
+
+	// Check ContainerSpec equality
+	assert.True(t, original.Equals(cloned))
+
+	// Verify deep copy by modifying the original
+	stringModified := "modified"
+	original.CapAdd[0] = stringModified
+	original.CapDrop[0] = stringModified
+	original.Command[0] = stringModified
+	original.Entrypoint[0] = stringModified
+	original.Env["FOO"] = stringModified
+	original.LogDriver.Options["max-size"] = stringModified
+	original.Volumes[0] = stringModified
+	original.VolumeMounts[0].ContainerPath = stringModified
+	original.ConfigMounts[0].ContainerPath = stringModified
+	*original.ConfigMounts[0].Mode = 0o755 // Modify the Mode pointer value
+	original.Sysctls["net.ipv4.ip_forward"] = stringModified
+
+	assert.False(t, original.Equals(cloned))
+	// Assert cloned values are unchanged
+	assert.Equal(t, "NET_ADMIN", cloned.CapAdd[0])
+	assert.Equal(t, "ALL", cloned.CapDrop[0])
+	assert.Equal(t, "sh", cloned.Command[0])
+	assert.Equal(t, "/bin/bash", cloned.Entrypoint[0])
+	assert.Equal(t, "bar", cloned.Env["FOO"])
+	assert.Equal(t, "qux", cloned.Env["BAZ"])
+	assert.Equal(t, "nginx:latest", cloned.Image)
+	assert.NotNil(t, cloned.Init)
+	assert.Equal(t, true, *cloned.Init)
+	assert.NotNil(t, cloned.LogDriver)
+	assert.Equal(t, "json-file", cloned.LogDriver.Name)
+	assert.Equal(t, "10m", cloned.LogDriver.Options["max-size"])
+	assert.Equal(t, true, cloned.Privileged)
+	assert.Equal(t, PullPolicyAlways, cloned.PullPolicy)
+	assert.Equal(t, int64(1234), cloned.Resources.CPU)
+	assert.Equal(t, int64(2345), cloned.Resources.Memory)
+	assert.Equal(t, int64(3456), cloned.Resources.MemoryReservation)
+	assert.Equal(t, "1000:1000", cloned.User)
+	assert.Equal(t, "/data", cloned.Volumes[0])
+	assert.Equal(t, "/data", cloned.VolumeMounts[0].ContainerPath)
+	assert.Equal(t, "/etc/config", cloned.ConfigMounts[0].ContainerPath)
+	assert.NotNil(t, cloned.ConfigMounts[0].Mode)
+	assert.Equal(t, os.FileMode(0o644), *cloned.ConfigMounts[0].Mode, "Mode should be deep copied")
+	assert.Equal(t, "1", cloned.Sysctls["net.ipv4.ip_forward"])
+}

pkg/client/compose/config.go

@@ -13,18 +13,27 @@ import (
 func configSpecsFromCompose(
 	configs types.Configs, serviceConfigs []types.ServiceConfigObjConfig, workingDir string,
 ) ([]api.ConfigSpec, []api.ConfigMount, error) {
-	var configSpecs []api.ConfigSpec
 	var configMounts []api.ConfigMount
 
+	// Temporary map to hold config specs
+	configSpecsMap := make(map[string]api.ConfigSpec)
+
+	// We iterate over all service config objects (config mounts)
 	for _, serviceConfig := range serviceConfigs {
 		var spec api.ConfigSpec
 
-		if projectConfig, exists := configs[serviceConfig.Source]; exists {
+		projectConfig, exists := configs[serviceConfig.Source]
+		if !exists {
+			return nil, nil, fmt.Errorf("config '%s' not found in project configs", serviceConfig.Source)
+		}
+
 		if projectConfig.External {
 			return nil, nil, fmt.Errorf("external configs are not supported: %s",
 				serviceConfig.Source)
 		}
 
+		spec, exists = configSpecsMap[serviceConfig.Source]
+		if !exists {
 			spec = api.ConfigSpec{
 				Name:    serviceConfig.Source,
 				Content: []byte(projectConfig.Content),
@@ -44,11 +53,9 @@ func configSpecsFromCompose(
 				}
 				spec.Content = fileContent
 			}
-		} else {
-			return nil, nil, fmt.Errorf("config '%s' not found in project configs", serviceConfig.Source)
-		}
 
-		configSpecs = append(configSpecs, spec)
+			configSpecsMap[serviceConfig.Source] = spec
+		}
 
 		// Create config mount
 		target := serviceConfig.Target
@@ -71,5 +78,11 @@ func configSpecsFromCompose(
 		configMounts = append(configMounts, mount)
 	}
 
+	var configSpecs []api.ConfigSpec
+	// Convert config spec map to slice
+	for _, spec := range configSpecsMap {
+		configSpecs = append(configSpecs, spec)
+	}
+
 	return configSpecs, configMounts, nil
 }

pkg/client/compose/config_test.go

@@ -77,6 +77,147 @@ func TestConfigSpecsFromCompose(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "same source mounted to different targets",
+			configs: types.Configs{
+				"shared-config": types.ConfigObjConfig{
+					File: "testdata/config1.txt",
+				},
+			},
+			serviceConfigs: []types.ServiceConfigObjConfig{
+				{
+					Source: "shared-config",
+					Target: "/app/config.json",
+					UID:    "1000",
+					GID:    "1000",
+				},
+				{
+					Source: "shared-config",
+					Target: "/backup/config.json",
+					UID:    "1001",
+					GID:    "1001",
+				},
+			},
+			expectedSpecs: []api.ConfigSpec{
+				{
+					Name:    "shared-config",
+					Content: []byte("test config content\n"),
+				},
+			},
+			expectedMounts: []api.ConfigMount{
+				{
+					ConfigName:    "shared-config",
+					ContainerPath: "/app/config.json",
+					Uid:           "1000",
+					Gid:           "1000",
+				},
+				{
+					ConfigName:    "shared-config",
+					ContainerPath: "/backup/config.json",
+					Uid:           "1001",
+					Gid:           "1001",
+				},
+			},
+		},
+		{
+			name: "config with default target path",
+			configs: types.Configs{
+				"default-config": types.ConfigObjConfig{
+					Content: "inline config content",
+				},
+			},
+			serviceConfigs: []types.ServiceConfigObjConfig{
+				{
+					Source: "default-config",
+					// No Target specified - should use default
+				},
+			},
+			expectedSpecs: []api.ConfigSpec{
+				{
+					Name:    "default-config",
+					Content: []byte("inline config content"),
+				},
+			},
+			expectedMounts: []api.ConfigMount{
+				{
+					ConfigName:    "default-config",
+					ContainerPath: "/default-config",
+				},
+			},
+		},
+		{
+			name: "config with inline content",
+			configs: types.Configs{
+				"inline-config": types.ConfigObjConfig{
+					Content: "server {\n  listen 80;\n}",
+				},
+			},
+			serviceConfigs: []types.ServiceConfigObjConfig{
+				{
+					Source: "inline-config",
+					Target: "/etc/nginx/sites-available/default",
+					Mode:   func() *types.FileMode { m := types.FileMode(0o755); return &m }(),
+				},
+			},
+			expectedSpecs: []api.ConfigSpec{
+				{
+					Name:    "inline-config",
+					Content: []byte("server {\n  listen 80;\n}"),
+				},
+			},
+			expectedMounts: []api.ConfigMount{
+				{
+					ConfigName:    "inline-config",
+					ContainerPath: "/etc/nginx/sites-available/default",
+					Mode:          func() *os.FileMode { m := os.FileMode(0o755); return &m }(),
+				},
+			},
+		},
+		{
+			name: "config not found error",
+			configs: types.Configs{
+				"existing-config": types.ConfigObjConfig{
+					Content: "some content",
+				},
+			},
+			serviceConfigs: []types.ServiceConfigObjConfig{
+				{
+					Source: "missing-config",
+					Target: "/app/config.json",
+				},
+			},
+			expectError: true,
+		},
+		{
+			name: "external config error",
+			configs: types.Configs{
+				"external-config": types.ConfigObjConfig{
+					External: true,
+				},
+			},
+			serviceConfigs: []types.ServiceConfigObjConfig{
+				{
+					Source: "external-config",
+					Target: "/app/config.json",
+				},
+			},
+			expectError: true,
+		},
+		{
+			name: "file not found error",
+			configs: types.Configs{
+				"missing-file-config": types.ConfigObjConfig{
+					File: "testdata/nonexistent.txt",
+				},
+			},
+			serviceConfigs: []types.ServiceConfigObjConfig{
+				{
+					Source: "missing-file-config",
+					Target: "/app/config.json",
+				},
+			},
+			expectError: true,
+		},
 	}
 
 	for _, tt := range tests {

pkg/client/compose/service.go

@@ -43,6 +43,8 @@ func ServiceSpecFromCompose(project *types.Project, serviceName string) (api.Ser
 
 	spec := api.ServiceSpec{
 		Container: api.ContainerSpec{
+			CapAdd:     service.CapAdd,
+			CapDrop:    service.CapDrop,
 			Command:    service.Command,
 			Entrypoint: service.Entrypoint,
 			Env:        env,
@@ -51,6 +53,7 @@ func ServiceSpecFromCompose(project *types.Project, serviceName string) (api.Ser
 			Privileged: service.Privileged,
 			PullPolicy: pullPolicy,
 			Resources:  resourcesFromCompose(service),
+			Sysctls:    service.Sysctls,
 			User:       service.User,
 		},
 		Name: serviceName,

pkg/client/compose/service_test.go

@@ -100,6 +100,8 @@ func TestServiceSpecFromCompose(t *testing.T) {
 					Name: "test",
 					Mode: api.ServiceModeReplicated,
 					Container: api.ContainerSpec{
+						CapAdd:     []string{"NET_ADMIN"},
+						CapDrop:    []string{"ALL"},
 						Command:    []string{"nginx", "updated", "command"},
 						Entrypoint: []string{"/updated-docker-entrypoint.sh"},
 						Env: map[string]string{
@@ -123,6 +125,9 @@ func TestServiceSpecFromCompose(t *testing.T) {
 							Memory:            100 * units.MiB,
 							MemoryReservation: 50 * units.MiB,
 						},
+						Sysctls: map[string]string{
+							"net.ipv4.ip_forward": "1",
+						},
 						User: "nginx:nginx",
 						VolumeMounts: []api.VolumeMount{
 							{

pkg/client/compose/testdata/compose-full-spec.yaml

@@ -1,5 +1,9 @@
 services:
   test:
+    cap_add:
+      - NET_ADMIN
+    cap_drop:
+      - ALL
     command: ["nginx", "updated", "command"]
     cpus: 0.5
     entrypoint: ["/updated-docker-entrypoint.sh"]
@@ -19,6 +23,8 @@ services:
     privileged: true
     pull_policy: always
     scale: 3
+    sysctls:
+      - net.ipv4.ip_forward=1
     user: nginx:nginx
     volumes:
       - /etc/passwd:/host/etc/passwd:ro

pkg/client/connector/common.go

@@ -0,0 +1,30 @@
+package connector
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+// defaultServiceConfig defines the default gRPC service configuration including retry policy for transient failures.
+var defaultServiceConfig = mustMarshalJSON(map[string]any{
+	"methodConfig": []map[string]any{
+		{
+			"name": []map[string]string{{"service": ""}},
+			"retryPolicy": map[string]any{
+				"maxAttempts":          5, // 5 is the maximum allowed by gRPC
+				"initialBackoff":       "0.5s",
+				"maxBackoff":           "5s",
+				"backoffMultiplier":    2,
+				"retryableStatusCodes": []string{"UNAVAILABLE"},
+			},
+		},
+	},
+})
+
+func mustMarshalJSON(v any) string {
+	b, err := json.Marshal(v)
+	if err != nil {
+		panic(fmt.Sprintf("failed to marshal service config: %v", err))
+	}
+	return string(b)
+}

pkg/client/connector/ssh.go

@@ -59,6 +59,7 @@ func (c *SSHConnector) Connect(ctx context.Context) (*grpc.ClientConn, error) {
 	conn, err := grpc.NewClient(
 		"unix://"+sockPath,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithDefaultServiceConfig(defaultServiceConfig),
 		grpc.WithContextDialer(
 			func(ctx context.Context, addr string) (net.Conn, error) {
 				addr = strings.TrimPrefix(addr, "unix://")

pkg/client/connector/sshcli.go

@@ -90,6 +90,7 @@ func (c *SSHCLIConnector) Connect(ctx context.Context) (*grpc.ClientConn, error)
 	grpcConn, err := grpc.NewClient(
 		"passthrough:///", // Dummy target since we're using a custom dialer.
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithDefaultServiceConfig(defaultServiceConfig),
 		grpc.WithContextDialer(func(ctx context.Context, _ string) (net.Conn, error) {
 			return c.conn, nil
 		}),

pkg/client/connector/tcp.go

@@ -23,6 +23,7 @@ func (c *TCPConnector) Connect(_ context.Context) (*grpc.ClientConn, error) {
 	conn, err := grpc.NewClient(
 		c.apiAddr.String(),
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithDefaultServiceConfig(defaultServiceConfig),
 	)
 	if err != nil {
 		return nil, fmt.Errorf("create machine API client: %w", err)

pkg/client/connector/unix.go

@@ -25,6 +25,7 @@ func (c *UnixConnector) Connect(_ context.Context) (*grpc.ClientConn, error) {
 	conn, err := grpc.NewClient(
 		target,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithDefaultServiceConfig(defaultServiceConfig),
 	)
 	if err != nil {
 		return nil, fmt.Errorf("create machine API client: %w", err)

pkg/client/connector/wireguard.go

@@ -66,6 +66,7 @@ func (c *WireGuardConnector) Connect(ctx context.Context) (*grpc.ClientConn, err
 	conn, err := grpc.NewClient(
 		machineAPIAddr,
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithDefaultServiceConfig(defaultServiceConfig),
 		grpc.WithContextDialer(func(ctx context.Context, addr string) (net.Conn, error) {
 			return c.tun.DialContext(ctx, "tcp", addr)
 		}),

pkg/client/deploy/container_test.go

@@ -9,6 +9,44 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+func TestEvalContainerSpecChange_ContainerCapAdd(t *testing.T) {
+	t.Parallel()
+
+	currentSpec := api.ServiceSpec{
+		Container: api.ContainerSpec{
+			Image: "nginx:latest",
+		},
+	}
+	newSpec := api.ServiceSpec{
+		Container: api.ContainerSpec{
+			Image:  "nginx:latest",
+			CapAdd: []string{"NET_ADMIN"},
+		},
+	}
+
+	assert.Equal(t, ContainerNeedsRecreate, EvalContainerSpecChange(currentSpec, newSpec))
+	assert.Equal(t, ContainerNeedsRecreate, EvalContainerSpecChange(newSpec, currentSpec))
+}
+
+func TestEvalContainerSpecChange_ContainerCapDrop(t *testing.T) {
+	t.Parallel()
+
+	currentSpec := api.ServiceSpec{
+		Container: api.ContainerSpec{
+			Image: "nginx:latest",
+		},
+	}
+	newSpec := api.ServiceSpec{
+		Container: api.ContainerSpec{
+			Image:   "nginx:latest",
+			CapDrop: []string{"ALL"},
+		},
+	}
+
+	assert.Equal(t, ContainerNeedsRecreate, EvalContainerSpecChange(currentSpec, newSpec))
+	assert.Equal(t, ContainerNeedsRecreate, EvalContainerSpecChange(newSpec, currentSpec))
+}
+
 func TestEvalContainerSpecChange_ContainerResources(t *testing.T) {
 	t.Parallel()
 
@@ -325,6 +363,27 @@ func TestEvalContainerSpecChange_ContainerPrivileged(t *testing.T) {
 	assert.Equal(t, ContainerNeedsRecreate, EvalContainerSpecChange(newSpec, currentSpec))
 }
 
+func TestEvalContainerSpecChange_ContainerSysctls(t *testing.T) {
+	t.Parallel()
+
+	currentSpec := api.ServiceSpec{
+		Container: api.ContainerSpec{
+			Image: "nginx:latest",
+		},
+	}
+	newSpec := api.ServiceSpec{
+		Container: api.ContainerSpec{
+			Image: "nginx:latest",
+			Sysctls: map[string]string{
+				"net.ipv4.ip_forward": "1",
+			},
+		},
+	}
+
+	assert.Equal(t, ContainerNeedsRecreate, EvalContainerSpecChange(currentSpec, newSpec))
+	assert.Equal(t, ContainerNeedsRecreate, EvalContainerSpecChange(newSpec, currentSpec))
+}
+
 func TestEvalContainerSpecChange_PullPolicy(t *testing.T) {
 	t.Parallel()
 

pkg/client/dns.go

@@ -61,14 +61,11 @@ func (cli *Client) CreateIngressRecords(ctx context.Context, serviceID string) (
 			continue
 		}
 
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
-
+		wg.Go(func() {
 			if err = verifyCaddyReachable(ctx, m.Machine); err == nil {
 				reachableMachines <- m.Machine
 			}
-		}()
+		})
 	}
 
 	go func() {

pkg/client/machine.go

@@ -4,7 +4,9 @@ import (
 	"context"
 	"fmt"
 	"strings"
+	"time"
 
+	"github.com/cenkalti/backoff/v4"
 	"github.com/psviderski/uncloud/internal/machine/api/pb"
 	"github.com/psviderski/uncloud/pkg/api"
 	"google.golang.org/grpc/codes"
@@ -13,6 +15,7 @@ import (
 )
 
 func (cli *Client) InspectMachine(ctx context.Context, nameOrID string) (*pb.MachineMember, error) {
+	// TODO: refactor to use MachineClient.InspectMachine.
 	machines, err := cli.ListMachines(ctx, nil)
 	if err != nil {
 		return nil, err
@@ -99,3 +102,48 @@ func (cli *Client) RenameMachine(ctx context.Context, nameOrID, newName string)
 
 	return cli.UpdateMachine(ctx, req)
 }
+
+// WaitMachineReady waits for the machine API on the connected machine to respond.
+func (cli *Client) WaitMachineReady(ctx context.Context, timeout time.Duration) error {
+	boff := backoff.WithContext(backoff.NewExponentialBackOff(
+		backoff.WithInitialInterval(100*time.Millisecond),
+		backoff.WithMaxInterval(1*time.Second),
+		backoff.WithMaxElapsedTime(timeout),
+	), ctx)
+
+	inspect := func() error {
+		if _, err := cli.Inspect(ctx, &emptypb.Empty{}); err != nil {
+			return fmt.Errorf("inspect machine: %w", err)
+		}
+		return nil
+	}
+	return backoff.Retry(inspect, boff)
+}
+
+// WaitClusterReady waits for the connected machine to be ready to server cluster requests.
+func (cli *Client) WaitClusterReady(ctx context.Context, timeout time.Duration) error {
+	// Backoff is not really needed here as the default service config for the gRPC client is already
+	// doing retries with backoff for Unavailable errors. However, it's still convenient to use backoff
+	// to control the overall timeout for the operation.
+	boff := backoff.WithContext(backoff.NewExponentialBackOff(
+		backoff.WithInitialInterval(100*time.Millisecond),
+		backoff.WithMaxInterval(1*time.Second),
+		backoff.WithMaxElapsedTime(timeout),
+	), ctx)
+
+	listMachines := func() error {
+		_, err := cli.ListMachines(ctx, nil)
+		if err != nil {
+			if s, ok := status.FromError(err); ok &&
+				// TODO: remove FailedPrecondition after releading 0.17.
+				(s.Code() == codes.Unavailable || s.Code() == codes.FailedPrecondition) {
+				// Machine is not ready yet, retry.
+				return err
+			}
+			// Other non-Unavailable errors should not be retried.
+			return backoff.Permanent(err)
+		}
+		return nil
+	}
+	return backoff.Retry(listMachines, boff)
+}

pkg/client/service.go

@@ -240,11 +240,7 @@ func (cli *Client) RemoveService(ctx context.Context, id string) error {
 
 	// Remove all containers on all machines that belong to the service.
 	for _, mc := range svc.Containers {
-		wg.Add(1)
-
-		go func() {
-			defer wg.Done()
-
+		wg.Go(func() {
 			err := cli.StopContainer(ctx, svc.ID, mc.Container.ID, container.StopOptions{})
 			if err != nil {
 				errCh <- fmt.Errorf("stop container '%s': %w", mc.Container.ID, err)
@@ -258,7 +254,7 @@ func (cli *Client) RemoveService(ctx context.Context, id string) error {
 			if err != nil && !errors.Is(err, api.ErrNotFound) {
 				errCh <- fmt.Errorf("remove container '%s': %w", mc.Container.ID, err)
 			}
-		}()
+		})
 	}
 
 	go func() {
@@ -286,16 +282,12 @@ func (cli *Client) StopService(ctx context.Context, id string, opts container.St
 
 	// Stop all containers on all machines that belong to the service.
 	for _, mc := range svc.Containers {
-		wg.Add(1)
-
-		go func() {
-			defer wg.Done()
-
+		wg.Go(func() {
 			err := cli.StopContainer(ctx, svc.ID, mc.Container.ID, opts)
 			if err != nil {
 				errCh <- fmt.Errorf("stop container '%s': %w", mc.Container.ID, err)
 			}
-		}()
+		})
 	}
 
 	go func() {
@@ -323,16 +315,12 @@ func (cli *Client) StartService(ctx context.Context, id string) error {
 
 	// Start all containers on all machines that belong to the service.
 	for _, mc := range svc.Containers {
-		wg.Add(1)
-
-		go func() {
-			defer wg.Done()
-
+		wg.Go(func() {
 			err := cli.StartContainer(ctx, svc.ID, mc.Container.ID)
 			if err != nil {
 				errCh <- fmt.Errorf("start container '%s': %w", mc.Container.ID, err)
 			}
-		}()
+		})
 	}
 
 	go func() {

test/e2e/cluster_test.go

@@ -55,7 +55,7 @@ func createTestCluster(
 	})
 
 	if waitReady {
-		require.NoError(t, p.WaitClusterReady(ctx, c, 15*time.Second))
+		require.NoError(t, p.WaitClusterReady(ctx, c, 30*time.Second))
 	}
 
 	return c, p
@@ -73,7 +73,6 @@ func TestClusterLifecycle(t *testing.T) {
 		// Create a client for each machine and wait for it to be ready.
 		clients := make([]*client.Client, len(c.Machines))
 		for i, m := range c.Machines {
-			require.NoError(t, ucind.WaitMachineReady(ctx, m, 5*time.Second))
 			clients[i], err = m.Connect(ctx)
 			require.NoError(t, err)
 			//goland:noinspection GoDeferInLoop
@@ -86,12 +85,11 @@ func TestClusterLifecycle(t *testing.T) {
 			require.Eventually(t, func() bool {
 				machines, err := cli.ListMachines(ctx, nil)
 				if err != nil {
-					// FailedPrecondition "cluster is not initialised" is expected until the store is reconciled.
-					if s, ok := status.FromError(err); ok {
-						if s.Code() == codes.FailedPrecondition {
+					// Unavailable "machine is not ready to serve cluster requests" is expected until
+					// the store is reconciled.
+					if s, ok := status.FromError(err); ok && s.Code() == codes.Unavailable {
 						return false
 					}
-					}
 					require.NoError(t, err)
 				}
 

test/e2e/compose_configs_test.go

@@ -66,6 +66,11 @@ func TestComposeConfigs(t *testing.T) {
 						Gid:           "1000",
 						Mode:          func() *os.FileMode { m := os.FileMode(0o600); return &m }(),
 					},
+					{
+						ConfigName:    "from-file",
+						ContainerPath: "/etc/new-dir/config-from-file.conf",
+						Mode:          func() *os.FileMode { m := os.FileMode(0o644); return &m }(),
+					},
 				},
 			},
 			Configs: []api.ConfigSpec{
@@ -110,5 +115,14 @@ func TestComposeConfigs(t *testing.T) {
 			userId:      1000,
 			groupId:     1000,
 		}, configContentSecond)
+
+		configContentThird, err := readFileInfoInContainer(t, cli, name, containerName, "/etc/new-dir/config-from-file.conf")
+		require.NoError(t, err)
+		assert.Equal(t, fileInfo{
+			permissions: 0o644,
+			content:     "this is file config\n",
+			userId:      0,
+			groupId:     0,
+		}, configContentThird, "Same config should be mountable to multiple paths, including nested directories")
 	})
 }

test/e2e/fixtures/compose-configs.yaml

@@ -11,6 +11,10 @@ services:
         uid: "1000"
         gid: "1000"
         mode: 0600
+      # Writing a config to a new, non-existent directory
+      - source: from-file
+        target: /etc/new-dir/config-from-file.conf
+        mode: 0644
     deploy:
       replicas: 1
 configs:

test/e2e/helpers.go

@@ -71,7 +71,6 @@ func readFileInfoInContainer(t *testing.T, cli *client.Client, serviceNameOrID,
 
 	// Parse permissions
 	permissions := strings.TrimSpace(permOutput)
-	fmt.Printf("Permissions output: %s\n", permissions)
 
 	// Parse three numbers: permissions, uid, gid
 	var permissionsOctal, uid, gid int

test/e2e/service_test.go

@@ -293,7 +293,7 @@ func TestDeployment(t *testing.T) {
 		config, err := cli.Caddy.GetConfig(ctx, nil)
 		require.NoError(t, err)
 
-		assert.Contains(t, config.Caddyfile, "# This file is autogenerated by Uncloud")
+		assert.Contains(t, config.Caddyfile, "# Caddyfile autogenerated by Uncloud")
 		assert.Contains(t, config.Caddyfile, "handle /.uncloud-verify")
 	})
 
@@ -423,7 +423,7 @@ myapp.example.com {
 		}, 5*time.Second, 100*time.Millisecond,
 			"Expected both custom configs to be included in the Caddyfile")
 
-		assert.Contains(t, config.Caddyfile, "# This file is autogenerated by Uncloud")
+		assert.Contains(t, config.Caddyfile, "# Caddyfile autogenerated by Uncloud")
 		assert.Contains(t, config.Caddyfile, "handle /.uncloud-verify")
 		assert.Contains(t, config.Caddyfile, caddyCaddyfile,
 			"Expected user-defined global Caddy config to be included in the Caddyfile")
@@ -480,7 +480,11 @@ myapp.example.com {
 		// Check that the Caddy config hasn't changed.
 		newConfig, err := cli.Caddy.GetConfig(ctx, nil)
 		require.NoError(t, err)
-		assert.Equal(t, validConfig, newConfig.Caddyfile,
+
+		// Compare stable parts of the Caddyfile only (skip autogenerated comment with timestamp).
+		_, stableValidConfig, _ := strings.Cut(validConfig, "\n")
+		_, stableNewConfig, _ := strings.Cut(newConfig.Caddyfile, "\n")
+		assert.Equal(t, stableValidConfig, stableNewConfig,
 			"Caddy config should not change when an invalid user-defined Caddy config is deployed")
 	})
 

website/docs/2-getting-started/2-deploy-demo-app.md

@@ -4,6 +4,14 @@ In this guide, we'll deploy [Excalidraw](https://excalidraw.com) — a popular s
 Linux server. You'll learn the **basics of Uncloud** and see how simple it is to **run web apps** on your own
 infrastructure with secure internet access.
 
+:::info NOTE
+To give you a chance to play with Uncloud without even leaving your browser or needing your own servers, we're providing interactive tutorials and playgrounds on the [iximiuz Labs](https://labs.iximiuz.com/) platform.
+
+You can follow [this tutorial](https://labs.iximiuz.com/tutorials/uncloud-create-cluster-ebebf72b) which walks you through creating a new cluster with two machines and then deploying a simple web service to it.
+
+You can also launch the [Uncloud playground](https://labs.iximiuz.com/playgrounds/uncloud-cluster-64523f7c) where you can play with an already initialized Uncloud cluster.
+:::
+
 ## Prerequisites
 
 Before you begin, you'll need:

website/docs/3-concepts/1-ingress/1-overview.md

@@ -10,7 +10,7 @@ with [Let's Encrypt](https://letsencrypt.org/), and route requests to your servi
 ## How it works
 
 By default, Caddy runs as a global service `caddy` on every machine in your cluster, listening on the host ports 80
-(HTTP) and 443 (HTTPS).
+(HTTP), 443 (HTTPS), and 443/UDP (HTTP/3).
 
 It's deployed during cluster initialisation (`uc machine init`) unless you use the `--no-caddy` flag.
 See [Managing Caddy](3-managing-caddy.md) for deployment and customisation instructions.

website/docs/3-concepts/1-ingress/2-publishing-services.md

@@ -197,8 +197,9 @@ debugging and verifying your `x-caddy` configs.
 Example output:
 
 ```caddyfile
-# 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.
+# Caddyfile autogenerated by Uncloud (DO NOT EDIT): 2025-12-20T22:43:56Z
+# Automatically updated on service or health status changes.
+# Docs: https://uncloud.run/docs/concepts/ingress/overview
 
 # User-defined global config from service 'caddy'.
 *.example.com {

website/docs/3-concepts/1-ingress/3-managing-caddy.md

@@ -94,6 +94,7 @@ services:
     x-ports:
       - 80:80@host
       - 443:443@host
+      - 443:443/udp@host
     x-caddy: Caddyfile
     deploy:
       mode: global
@@ -138,7 +139,8 @@ internal.example.com {
 :::info note
 
 The specified `command`, `environment`, `volumes`, and `x-ports` properties are essential for Caddy to function
-correctly in the Uncloud cluster.
+correctly in the Uncloud cluster. Do not change the source paths of the volume mounts as the Uncloud daemon relies on
+them to communicate with Caddy and update its configuration.
 
 :::
 
@@ -160,8 +162,9 @@ uc caddy config
 Example output:
 
 ```caddyfile
-# 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.
+# Caddyfile autogenerated by Uncloud (DO NOT EDIT): 2025-12-22T10:30:12Z
+# Automatically updated on service or health status changes.
+# Docs: https://uncloud.run/docs/concepts/ingress/overview
 
 # User-defined global config from service 'caddy'.
 # Global options.

website/docs/8-compose-file-reference/1-support-matrix.md

@@ -4,9 +4,11 @@ Uncloud supports a subset of the [Compose specification](https://compose-spec.io
 The following table shows the support status for main Compose features:
 
 | Feature            | Support Status     | Notes                                                                                          |
-|--------------------|--------------------|---------------------------------------------------------------------------------------|
+|--------------------|--------------------|------------------------------------------------------------------------------------------------|
 | **Services**       |                    |                                                                                                |
-| `build`            | ⚠️ Limited         | Build context and Dockerfile                                                          |
+| `build`            | ✅ Supported        | Build context and Dockerfile                                                                   |
+| `cap_add`          | ✅ Supported        | Additional kernel [capabilities](https://man7.org/linux/man-pages/man7/capabilities.7.html)    |
+| `cap_drop`         | ✅ Supported        | Which kernel [capabilities](https://man7.org/linux/man-pages/man7/capabilities.7.html) to drop |
 | `command`          | ✅ Supported        | Override container command                                                                     |
 | `configs`          | ✅ Supported        | File-based and inline configs                                                                  |
 | `cpus`             | ✅ Supported        | CPU limit                                                                                      |
@@ -33,6 +35,7 @@ The following table shows the support status for main Compose features:
 | `secrets`          | ❌ Not supported    | Use configs or environment variables                                                           |
 | `security_opt`     | ❌ Not supported    |                                                                                                |
 | `storage_opt`      | ❌ Not supported    |                                                                                                |
+| `sysctls`          | ✅ Supported        | Namespaced kernel parameters                                                                   |
 | `user`             | ✅ Supported        | Set container user                                                                             |
 | `volumes`          | ✅ Supported        | Named volumes, bind mounts, tmpfs                                                              |
 | **Deploy**         |                    |                                                                                                |

website/docs/9-cli-reference/uc.md

@@ -19,17 +19,20 @@ A CLI tool for managing Uncloud resources such as machines, services, and volume
 * [uc ctx](uc_ctx.md)	 - Switch between different cluster contexts. Contains subcommands to manage contexts.
 * [uc deploy](uc_deploy.md)	 - Deploy services from a Compose file.
 * [uc dns](uc_dns.md)	 - Manage cluster domain in Uncloud DNS.
-* [uc exec](uc_exec.md)	 - Execute a command in a running service container
+* [uc exec](uc_exec.md)	 - Execute a command in a running service container.
 * [uc image](uc_image.md)	 - Manage images on machines in the cluster.
 * [uc images](uc_images.md)	 - List images on machines in the cluster.
 * [uc inspect](uc_inspect.md)	 - Display detailed information on a service.
 * [uc logs](uc_logs.md)	 - View service logs.
 * [uc ls](uc_ls.md)	 - List services.
 * [uc machine](uc_machine.md)	 - Manage machines in the cluster.
-* [uc ps](uc_ps.md)	 - List all service containers in the cluster
+* [uc ps](uc_ps.md)	 - List all service containers.
 * [uc rm](uc_rm.md)	 - Remove one or more services.
 * [uc run](uc_run.md)	 - Run a service.
 * [uc scale](uc_scale.md)	 - Scale a replicated service by changing the number of replicas.
 * [uc service](uc_service.md)	 - Manage services in the cluster.
+* [uc start](uc_start.md)	 - Start one or more services.
+* [uc stop](uc_stop.md)	 - Stop one or more services.
 * [uc volume](uc_volume.md)	 - Manage volumes in the cluster.
+* [uc wg](uc_wg.md)	 - Inspect WireGuard network
 

website/docs/9-cli-reference/uc_exec.md

@@ -1,6 +1,6 @@
 # uc exec
 
-Execute a command in a running service container
+Execute a command in a running service container.
 
 ## Synopsis
 

website/docs/9-cli-reference/uc_machine_add.md

@@ -24,6 +24,8 @@ uc machine add [USER@]HOST[:PORT] [flags]
       --public-ip string   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. (default "auto")
   -i, --ssh-key string     Path to SSH private key for remote login (if not already added to SSH agent). (default "~/.ssh/id_ed25519")
       --version string     Version of the Uncloud daemon to install on the machine. (default "latest")
+  -y, --yes                Auto-confirm prompts (e.g., resetting an already initialised machine).
+                           Should be explicitly set when running non-interactively, e.g., in CI/CD pipelines. [$UNCLOUD_AUTO_CONFIRM]
 ```
 
 ## Options inherited from parent commands

website/docs/9-cli-reference/uc_machine_init.md

@@ -12,7 +12,7 @@ Connection methods:
   ssh+cli://user@host   - Use system SSH command (supports ProxyJump, SSH config)
 
 ```
-uc machine init [USER@HOST:PORT] [flags]
+uc machine init [schema://]USER@HOST[:PORT] [flags]
 ```
 
 ## Examples
@@ -46,6 +46,8 @@ uc machine init [USER@HOST:PORT] [flags]
       --public-ip string      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. (default "auto")
   -i, --ssh-key string        Path to SSH private key for remote login (if not already added to SSH agent). (default "~/.ssh/id_ed25519")
       --version string        Version of the Uncloud daemon to install on the machine. (default "latest")
+  -y, --yes                   Auto-confirm prompts (e.g., resetting an already initialised machine).
+                              Should be explicitly set when running non-interactively, e.g., in CI/CD pipelines. [$UNCLOUD_AUTO_CONFIRM]
 ```
 
 ## Options inherited from parent commands

website/docs/9-cli-reference/uc_ps.md

@@ -1,6 +1,6 @@
 # uc ps
 
-List all service containers in the cluster
+List all service containers.
 
 ## Synopsis
 
@@ -17,7 +17,7 @@ uc ps [flags]
 
 ```
   -h, --help          help for ps
-  -s, --sort string   Sort containers by 'service', 'machine' or 'health' (default "service")
+  -s, --sort string   Sort containers by 'service', 'machine', or 'health'. (default "service")
 ```
 
 ## Options inherited from parent commands

website/docs/9-cli-reference/uc_service.md

@@ -20,7 +20,7 @@ Manage services in the cluster.
 ## See also
 
 * [uc](uc.md)	 - A CLI tool for managing Uncloud resources such as machines, services, and volumes.
-* [uc service exec](uc_service_exec.md)	 - Execute a command in a running service container
+* [uc service exec](uc_service_exec.md)	 - Execute a command in a running service container.
 * [uc service inspect](uc_service_inspect.md)	 - Display detailed information on a service.
 * [uc service logs](uc_service_logs.md)	 - View service logs.
 * [uc service ls](uc_service_ls.md)	 - List services.

website/docs/9-cli-reference/uc_service_exec.md

@@ -1,6 +1,6 @@
 # uc service exec
 
-Execute a command in a running service container
+Execute a command in a running service container.
 
 ## Synopsis
 

website/docs/9-cli-reference/uc_service_start.md

@@ -4,7 +4,10 @@ Start one or more services.
 
 ## Synopsis
 
-Start one or more services.
+Start one or more previously stopped services.
+
+Starts all containers of the specified service(s) across all machines in the cluster.
+Services can be specified by name or ID.
 
 ```
 uc service start SERVICE [SERVICE...] [flags]

website/docs/9-cli-reference/uc_service_stop.md

@@ -4,7 +4,10 @@ Stop one or more services.
 
 ## Synopsis
 
-Stop one or more services.
+Stop one or more running services.
+
+Gracefully stops all containers of the specified service(s) across all machines in the cluster.
+Services can be specified by name or ID. Stopped services can be restarted with 'uc start'.
 
 ```
 uc service stop SERVICE [SERVICE...] [flags]
@@ -14,8 +17,10 @@ uc service stop SERVICE [SERVICE...] [flags]
 
 ```
   -h, --help            help for stop
-  -s, --signal string   Signal to send to the container
-  -t, --timeout int     Seconds to wait before killing the container
+  -s, --signal string   Signal to send to each container's main process.
+                        Can be a signal name (SIGTERM, SIGINT, SIGHUP, etc.) or a number. (default SIGTERM)
+  -t, --timeout int     Seconds to wait for each container to stop gracefully before forcibly killing it with SIGKILL.
+                        Use -1 to wait indefinitely. (default 10)
 ```
 
 ## Options inherited from parent commands

website/docs/9-cli-reference/uc_start.md

@@ -0,0 +1,34 @@
+# uc start
+
+Start one or more services.
+
+## Synopsis
+
+Start one or more previously stopped services.
+
+Starts all containers of the specified service(s) across all machines in the cluster.
+Services can be specified by name or ID.
+
+```
+uc start SERVICE [SERVICE...] [flags]
+```
+
+## Options
+
+```
+  -h, --help   help for start
+```
+
+## Options inherited from parent commands
+
+```
+      --connect string          Connect to a remote cluster machine without using the Uncloud configuration file. [$UNCLOUD_CONNECT]
+                                Format: [ssh://]user@host[:port], ssh+cli://user@host[:port], tcp://host:port, or unix:///path/to/uncloud.sock
+  -c, --context string          Name of the cluster context to use (default is the current context). [$UNCLOUD_CONTEXT]
+      --uncloud-config string   Path to the Uncloud configuration file. [$UNCLOUD_CONFIG] (default "~/.config/uncloud/config.yaml")
+```
+
+## See also
+
+* [uc](uc.md)	 - A CLI tool for managing Uncloud resources such as machines, services, and volumes.
+

website/docs/9-cli-reference/uc_stop.md

@@ -0,0 +1,38 @@
+# uc stop
+
+Stop one or more services.
+
+## Synopsis
+
+Stop one or more running services.
+
+Gracefully stops all containers of the specified service(s) across all machines in the cluster.
+Services can be specified by name or ID. Stopped services can be restarted with 'uc start'.
+
+```
+uc stop SERVICE [SERVICE...] [flags]
+```
+
+## Options
+
+```
+  -h, --help            help for stop
+  -s, --signal string   Signal to send to each container's main process.
+                        Can be a signal name (SIGTERM, SIGINT, SIGHUP, etc.) or a number. (default SIGTERM)
+  -t, --timeout int     Seconds to wait for each container to stop gracefully before forcibly killing it with SIGKILL.
+                        Use -1 to wait indefinitely. (default 10)
+```
+
+## Options inherited from parent commands
+
+```
+      --connect string          Connect to a remote cluster machine without using the Uncloud configuration file. [$UNCLOUD_CONNECT]
+                                Format: [ssh://]user@host[:port], ssh+cli://user@host[:port], tcp://host:port, or unix:///path/to/uncloud.sock
+  -c, --context string          Name of the cluster context to use (default is the current context). [$UNCLOUD_CONTEXT]
+      --uncloud-config string   Path to the Uncloud configuration file. [$UNCLOUD_CONFIG] (default "~/.config/uncloud/config.yaml")
+```
+
+## See also
+
+* [uc](uc.md)	 - A CLI tool for managing Uncloud resources such as machines, services, and volumes.
+

website/docs/9-cli-reference/uc_wg.md

@@ -0,0 +1,24 @@
+# uc wg
+
+Inspect WireGuard network
+
+## Options
+
+```
+  -h, --help   help for wg
+```
+
+## Options inherited from parent commands
+
+```
+      --connect string          Connect to a remote cluster machine without using the Uncloud configuration file. [$UNCLOUD_CONNECT]
+                                Format: [ssh://]user@host[:port], ssh+cli://user@host[:port], tcp://host:port, or unix:///path/to/uncloud.sock
+  -c, --context string          Name of the cluster context to use (default is the current context). [$UNCLOUD_CONTEXT]
+      --uncloud-config string   Path to the Uncloud configuration file. [$UNCLOUD_CONFIG] (default "~/.config/uncloud/config.yaml")
+```
+
+## See also
+
+* [uc](uc.md)	 - A CLI tool for managing Uncloud resources such as machines, services, and volumes.
+* [uc wg show](uc_wg_show.md)	 - Show WireGuard network configuration for a machine.
+

website/docs/9-cli-reference/uc_wg_show.md

@@ -0,0 +1,32 @@
+# uc wg show
+
+Show WireGuard network configuration for a machine.
+
+## Synopsis
+
+Show the WireGuard network configuration for the machine currently connected to (or specified by the global --connect flag).
+
+```
+uc wg show [flags]
+```
+
+## Options
+
+```
+  -h, --help             help for show
+  -m, --machine string   Name or ID of the machine to show the configuration for. (default is connected machine)
+```
+
+## Options inherited from parent commands
+
+```
+      --connect string          Connect to a remote cluster machine without using the Uncloud configuration file. [$UNCLOUD_CONNECT]
+                                Format: [ssh://]user@host[:port], ssh+cli://user@host[:port], tcp://host:port, or unix:///path/to/uncloud.sock
+  -c, --context string          Name of the cluster context to use (default is the current context). [$UNCLOUD_CONTEXT]
+      --uncloud-config string   Path to the Uncloud configuration file. [$UNCLOUD_CONFIG] (default "~/.config/uncloud/config.yaml")
+```
+
+## See also
+
+* [uc wg](uc_wg.md)	 - Inspect WireGuard network
+