fix: migration script for uncloud Docker network to be compatible with Docker 28.2.0+

scripts/migrate_docker_28.2.0.sh

@@ -0,0 +1,66 @@
+#!/bin/bash
+# This script migrates the Docker network 'uncloud' on a machine that was created with uncloud <0.9.0 to be compatible
+# with Docker 28.2.0+. This fixes cross-machine communication for uncloud service containers.
+# It disconnects all containers from the network, removes the network, and then recreates it with the new configuration.
+# You should run this script as root or with sudo privileges.
+set -euo pipefail
+
+# Do not recreate the network if it already has the required configuration.
+TRUSTED_INTERFACES=$(docker network inspect uncloud -f '{{index .Options "com.docker.network.bridge.trusted_host_interfaces"}}' 2>/dev/null)
+if [ "$TRUSTED_INTERFACES" = "uncloud" ]; then
+    echo "Network uncloud already has the required option com.docker.network.bridge.trusted_host_interfaces=uncloud."
+    echo "No migration needed."
+    exit 0
+fi
+
+echo "Getting containers connected to Docker network uncloud..."
+CONTAINERS=$(docker network inspect uncloud -f '{{range .Containers}}{{.Name}} {{end}}' 2>/dev/null)
+if [ -z "$CONTAINERS" ]; then
+    echo "No containers found connected to uncloud network."
+else
+    echo "Found containers: $CONTAINERS"
+fi
+
+SUBNET=$(docker network inspect uncloud -f '{{range .IPAM.Config}}{{.Subnet}}{{end}}' 2>/dev/null)
+if [ -z "$SUBNET" ]; then
+    echo "Error: Could not get subnet for Docker network uncloud."
+    exit 1
+fi
+echo "Current uncloud network subnet: $SUBNET"
+
+if [ -n "$CONTAINERS" ]; then
+    echo "Disconnecting containers from uncloud network..."
+    for CONTAINER in $CONTAINERS; do
+        echo "  Disconnecting $CONTAINER..."
+        docker network disconnect uncloud "$CONTAINER"
+    done
+fi
+
+echo "Deleting uncloud network..."
+docker network rm uncloud
+
+echo "Recreating uncloud network with new configuration..."
+if docker network create \
+    --subnet "$SUBNET" \
+    --label uncloud.managed \
+    -o com.docker.network.bridge.trusted_host_interfaces=uncloud \
+    uncloud;
+then
+    echo "Network uncloud successfully recreated."
+else
+    echo "Error: Failed to recreate uncloud network."
+    exit 1
+fi
+
+if [ -n "$CONTAINERS" ]; then
+    echo "Reconnecting containers to uncloud network..."
+    for CONTAINER in $CONTAINERS; do
+        echo "  Reconnecting $CONTAINER..."
+        docker network connect uncloud $CONTAINER
+    done
+fi
+
+echo "Restarting uncloud machine daemon..."
+systemctl restart uncloud.service
+
+echo "Done!"