From 91d58bc7013b5f8f9fad89cecca8bcc7b828566b Mon Sep 17 00:00:00 2001
From: Pavel Sviderski <me@psviderski.name>
Date: Tue, 4 Mar 2025 12:14:49 +1000
Subject: [PATCH] chore: add uninstall.sh script to remove uncloud and managed
 containers and network from machine

---
 scripts/uninstall.sh | 134 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 scripts/uninstall.sh

diff --git a/scripts/uninstall.sh b/scripts/uninstall.sh
new file mode 100644
index 00000000..4e268acb
--- /dev/null
+++ b/scripts/uninstall.sh
@@ -0,0 +1,134 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+AUTO_CONFIRM=${AUTO_CONFIRM:-false}
+# Define variables based on the same defaults used in the installation script.
+INSTALL_BIN_DIR=${INSTALL_BIN_DIR:-/usr/local/bin}
+INSTALL_SYSTEMD_DIR=${INSTALL_SYSTEMD_DIR:-/etc/systemd/system}
+UNCLOUD_USER="uncloud"
+UNCLOUD_DATA_DIR=${UNCLOUD_DATA_DIR:-/var/lib/uncloud}
+UNCLOUD_RUN_DIR=${UNCLOUD_RUN_DIR:-/run/uncloud}
+
+log() {
+    echo -e "\033[1;32m$1\033[0m"
+}
+
+error() {
+    echo -e "\033[1;31mERROR: $1\033[0m" >&2
+    exit 1
+}
+
+confirm() {
+    if [ "${AUTO_CONFIRM}" = "true" ]; then
+        return 0
+    fi
+
+    read -r -p "$1 [y/N] " response
+    case "$response" in
+        [yY][eE][sS]|[yY])
+            return 0
+            ;;
+        *)
+            return 1
+            ;;
+    esac
+}
+
+# Check if user is root.
+if [ "$EUID" -ne 0 ]; then
+    error "Please run the uninstall script with sudo or as root."
+fi
+
+# Confirm before proceeding.
+log "⚠️This script will uninstall Uncloud and remove ALL service containers deployed to this machine."
+log "The following actions will be performed:"
+echo "- Remove Uncloud systemd services"
+echo "- Remove Uncloud binaries and data"
+echo "- Remove Uncloud user and group"
+echo "- Remove all Docker containers managed by Uncloud"
+echo "- Remove Uncloud Docker network"
+echo "- Remove Uncloud WireGuard interface"
+
+if ! confirm "Do you want to proceed with uninstallation?"; then
+    log "Uninstallation cancelled."
+    exit 0
+fi
+
+log "⏳ Stopping systemd services..."
+systemctl stop uncloud.service || log "uncloud.service not running or doesn't exist."
+systemctl stop uncloud-corrosion.service || log "uncloud-corrosion.service not running or doesn't exist."
+systemctl disable uncloud.service || log "uncloud.service already disabled or doesn't exist."
+systemctl disable uncloud-corrosion.service || log "uncloud-corrosion.service already disabled or doesn't exist."
+log "✓ Systemd services stopped."
+
+log "⏳ Removing systemd service files..."
+rm -fv "${INSTALL_SYSTEMD_DIR}/uncloud.service"
+rm -fv "${INSTALL_SYSTEMD_DIR}/uncloud-corrosion.service"
+systemctl daemon-reload
+log "✓ Systemd service files removed."
+
+log "⏳ Removing binaries..."
+rm -fv "${INSTALL_BIN_DIR}/uncloudd"
+rm -fv "${INSTALL_BIN_DIR}/uncloud-corrosion"
+log "✓ Binaries removed."
+
+log "⏳ Removing data and run directories..."
+rm -rfv "${UNCLOUD_DATA_DIR}"
+rm -rfv "${UNCLOUD_RUN_DIR}"
+log "✓ Data and run directories removed."
+
+log "⏳ Removing Linux user and group..."
+if id "${UNCLOUD_USER}" &> /dev/null; then
+    userdel "${UNCLOUD_USER}" || error "Failed to remove user ${UNCLOUD_USER}, it may still be used by other processes."
+    log "✓ Linux user '${UNCLOUD_USER}' removed."
+else
+    log "Linux user '${UNCLOUD_USER}' does not exist."
+fi
+
+# Check if the group still exists (other users may be using it).
+if getent group "${UNCLOUD_USER}" &> /dev/null; then
+    groupdel "${UNCLOUD_USER}" || error "Failed to remove group ${UNCLOUD_USER}, it may still be used by other processes or users."
+    log "✓ Linux group '${UNCLOUD_USER}' removed."
+else
+    log "Linux group '${UNCLOUD_USER}' does not exist or was already removed."
+fi
+
+log "⏳ Looking for Docker containers and network created by Uncloud..."
+if command -v docker &> /dev/null; then
+    uncloud_containers=$(docker ps -a --filter "label=uncloud.managed" -q)
+    if [ -n "${uncloud_containers}" ]; then
+        log "Found $(echo "${uncloud_containers}" | wc -w) Uncloud managed containers."
+        log "⏳ Stopping Uncloud managed containers..."
+        echo "${uncloud_containers}" | xargs docker stop || error "Failed to stop Uncloud managed containers."
+        log "⏳ Removing Uncloud managed containers..."
+        echo "${uncloud_containers}" | xargs docker rm || error "Failed to remove Uncloud managed containers."
+        log "✓ Uncloud managed containers stopped and removed."
+    else
+        log "No Uncloud managed containers found."
+    fi
+
+    uncloud_network=$(docker network ls --filter "name=uncloud" -q)
+    if [ -n "${uncloud_network}" ]; then
+        log "⏳ Removing Docker network uncloud..."
+        docker network rm uncloud || error "Failed to remove Docker network uncloud."
+        log "✓ Docker network uncloud removed."
+    else
+        log "Docker network uncloud not found."
+    fi
+else
+    log "Docker CLI not found, skipping Docker container and network cleanup."
+fi
+
+log "⏳ Removing WireGuard interface uncloud..."
+if ip link show uncloud &> /dev/null; then
+    ip link delete uncloud
+    log "✓ WireGuard interface uncloud removed."
+else
+    log "WireGuard interface uncloud not found."
+fi
+
+echo
+log "✅ Uncloud has been uninstalled successfully!"
+log "Note: Docker installation was preserved. If you want to completely remove Docker as well, \
+follow https://docs.docker.com/engine/install/ubuntu/#uninstall-docker-engine"