Consul Stack (Docker Swarm)

consul.yml

---
version: "3.8"

services:
  seed:
    image: consul:latest
    environment:
      - "CONSUL_LOCAL_CONFIG={\"disable_update_check\": true}"
      - "CONSUL_BIND_INTERFACE=eth0"
    entrypoint:
      - timeout
      - -sTERM
      - "300"
      - consul
      - agent
      - -server
      - -bootstrap-expect=3
      - -data-dir=/tmp/consuldata
      - -bind={{ GetInterfaceIP "eth0" }}
    networks:
      - consul
    deploy:
      restart_policy:
        condition: none
      replicas: 1
      placement:
        constraints:
          - "node.role == manager"

  server:
    image: consul:latest
    entrypoint:
      - consul
      - agent
      - -server
      - -data-dir=/data
      - -bind={{ GetInterfaceIP "eth0" }}
      - -client=0.0.0.0
      - -retry-join=seed:8301
      - -ui
    environment:
      - "CONSUL_LOCAL_CONFIG={\"disable_update_check\": true}"
      - "CONSUL_BIND_INTERFACE=eth0"
      - "CONSUL_HTTP_ADDR=0.0.0.0"
    volumes:
      - consul:/data
    networks:
      - consul
      - traefik
    deploy:
      mode: global
      placement:
        constraints:
          - "node.role == manager"
      labels:
        - "traefik.enable=true"
        - "traefik.docker.network=traefik"
        - "traefik.http.services.consul_server.loadbalancer.server.port=8500"
        - "traefik.http.routers.consul_server.rule=Host(`consul.mills.io`)"
        - "traefik.http.routers.consul_server.priority=2"
      restart_policy:
        condition: on-failure

networks:
  consul:
    driver: overlay
  traefik:
    external: true

volumes:
  consul:
    driver: local