feat: Initial example of how to automatically update images at the edge with no downtime and automatic rollbacks

2025-02-21 18:13:36 -07:00
parent 7436774ccf
commit f2960bef3f
4 changed files with 173 additions and 1 deletions
@@ -0,0 +1,48 @@
+---
+services:
+  diun:
+    image: darkalex17/diun-docker:latest
+    command: serve
+    volumes:
+      - "./data:/data"
+      - "/var/run/docker.sock:/var/run/docker.sock"
+      - "./swarm-update.sh:/swarm-update.sh"
+      - "/path/to/docker/config.json:/root/.docker/config.json:ro" # Specify the credentials config
+    environment:
+      - "LOG_LEVEL=info"
+      - "LOG_JSON=false"
+      - "DIUN_WATCH_WORKERS=20"
+      - "DIUN_WATCH_SCHEDULE=*/1 * * * *" # Check once every minute
+      - "DIUN_WATCH_JITTER=30s"
+      - "DIUN_PROVIDERS_SWARM=true"
+      - "DIUN_NOTIF_SCRIPT_CMD=sh"
+      - "DIUN_NOTIF_SCRIPT_ARGS=/swarm-update.sh"
+    deploy:
+      mode: replicated
+      replicas: 1
+      placement:
+        constraints:
+          - node.role == manager
+
+  radarr-mock:
+    image: darkalex17/radarr-mock:latest
+    ports:
+      - 7878:7878
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:7878"] # Ensure the new container is healthy and functional so we know we can kill the old container
+      interval: 10s
+      timeout: 3s
+      retries: 2
+      start_period: 10s
+    deploy:
+      restart_policy:
+        condition: on-failure
+        max_attempts: 3 # At most, try 3 times to start the container
+        delay: 5s
+      update_config:
+        order: start-first # Ensure a new container can be started before killing the old one
+        failure_action: rollback
+        delay: 10s
+        parallelism: 1
+      labels:
+        - "diun.enable=true" # Tell diun to monitor this service/container's image