N8n.io with Docker and Traefik 2

Questions
6

You need certificatesresolvers on traefik:

version: "3.7"

services:
  traefik:
    image: traefik:latest
    command:
      - "--api.dashboard=false"
      - "--providers.docker.swarmMode=true"
      - "--providers.docker.endpoint=unix:///var/run/docker.sock"
      - "--providers.docker.exposedbydefault=false"
      - "--providers.docker.network=network_public"
      - "--entrypoints.web.address=:80"
      - "--entrypoints.web.http.redirections.entryPoint.to=websecure"
      - "--entrypoints.web.http.redirections.entryPoint.scheme=https"
      - "--entrypoints.web.http.redirections.entrypoint.permanent=true"
      - "--entrypoints.websecure.address=:443"
      - "--certificatesresolvers.letsencryptresolver.acme.httpchallenge=true"
      - "--certificatesresolvers.letsencryptresolver.acme.httpchallenge.entrypoint=web"
      - "--certificatesresolvers.letsencryptresolver.acme.email=youremail@gmail.com"
      - "--certificatesresolvers.letsencryptresolver.acme.storage=/etc/traefik/letsencrypt/acme.json"
      - "--log.level=DEBUG"
      - "--log.format=common"
      - "--log.filePath=/var/log/traefik/traefik.log"
      - "--accesslog=true"
      - "--accesslog.filepath=/var/log/traefik/access-log"
    deploy:
      placement:
        constraints:
          - node.role == manager
      labels:
        - "traefik.enable=true"
        - "traefik.http.middlewares.redirect-https.redirectscheme.scheme=https"
        - "traefik.http.middlewares.redirect-https.redirectscheme.permanent=true"
        - "traefik.http.routers.http-catchall.rule=hostregexp(`{host:.+}`)"
        - "traefik.http.routers.http-catchall.entrypoints=web"
        - "traefik.http.routers.http-catchall.middlewares=redirect-https@docker"
        - "traefik.http.routers.http-catchall.priority=1"
      resources:
        limits:
          memory: 1024M
      restart_policy:
        condition: on-failure
        delay: 11s
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock:ro"
      - "vol_certificates:/etc/traefik/letsencrypt"
    ports:
      - target: 80
        published: 80
        mode: host
      - target: 443
        published: 443
        mode: host
    networks:
      - network_public
volumes:
  vol_shared:
    external: true
    name: volume_swarm_shared
  vol_certificates:
    external: true
    name: volume_swarm_certificates
networks:
  network_public:
    external: true
    name: network_swarm_public

put the n8n port on loadbalancer:

version: '3.7'

services:

  n8n:
    image: n8nio/n8n
    environment:
      - DB_TYPE=mysqldb
      - DB_MYSQLDB_DATABASE=n8n
      - DB_MYSQLDB_HOST=database
      - DB_MYSQLDB_PORT=3306
      - DB_MYSQLDB_USER=root
      - DB_MYSQLDB_PASSWORD=asdf
      - N8N_BASIC_AUTH_ACTIVE=true
      - N8N_BASIC_AUTH_USER=asdf
      - N8N_BASIC_AUTH_PASSWORD=asdf
      - N8N_ENCRYPTION_KEY=MdRRn2jiZuVeh5tI77A6
      - N8N_HOST=n8n.yourdomain.com
      - N8N_PROTOCOL=https
      - NODE_ENV=production
      - WEBHOOK_URL=https://webhooks.yourdomain.com/
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints:
          - node.role == manager
      resources:
        limits:
          cpus: '0.5'
          memory: 512M
      labels:
        - "traefik.enable=true"
        - "traefik.http.routers.n8n.rule=(Host(`n8n.yourdomain.com`) || Host(`webhooks.yourdomain.com`))"
        - "traefik.http.routers.n8n.entrypoints=websecure"
        - "traefik.http.routers.n8n.tls.certresolver=letsencryptresolver"
        - "traefik.http.services.n8n.loadbalancer.server.port=5678"
        - "traefik.http.services.n8n.loadbalancer.passHostHeader=true"
        - "traefik.http.middlewares.n8n.headers.SSLRedirect=true"
        - "traefik.http.middlewares.n8n.headers.STSSeconds=315360000"
        - "traefik.http.middlewares.n8n.headers.browserXSSFilter=true"
        - "traefik.http.middlewares.n8n.headers.contentTypeNosniff=true"
        - "traefik.http.middlewares.n8n.headers.forceSTSHeader=true"
        - "traefik.http.middlewares.n8n.headers.SSLHost=n8n.yourdomain.com"
        - "traefik.http.middlewares.n8n.headers.STSIncludeSubdomains=true"
        - "traefik.http.middlewares.n8n.headers.STSPreload=true"
    volumes:
       - n8n-data:/var/www/html
    networks:
      - network_public
    command: /bin/sh -c "sleep 10; n8n start"

volumes:
  n8n-data:

networks:
  network_public:
    external: true
    name: network_swarm_public
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