docker-compose.yml

version: '3.1'

#customise this with options from
#https://www.consul.io/docs/agent/options.html

services:

  seed:
    hostname: seed
    image: consul:0.9.2
    deploy:
      replicas: 1
      placement:
        constraints:
          - "engine.labels.access == consul_seed"
    environment:
      - "CONSUL_LOCAL_CONFIG={\"disable_update_check\": true}"
      - "CONSUL_BIND_INTERFACE=eth0"
    entrypoint:
      - consul
      - agent
      - -server
      - -bootstrap-expect=3
      - -data-dir=/tmp/consuldata
      - -bind={{ GetInterfaceIP "eth0" }}
    networks:
      - "consul"

  cluster:
    image: consul:0.9.2
    depends_on:
      - "seed"
    deploy:
      mode: global                                      ##this will deploy to all nodes that
      placement:
        constraints:
          - "engine.labels.access != consul_seed"
    environment:
      - "CONSUL_LOCAL_CONFIG={\"disable_update_check\": true}"
      - "CONSUL_BIND_INTERFACE=eth0"
      - "CONSUL_HTTP_ADDR=0.0.0.0"
    entrypoint:
      - consul
      - agent
      - -server
      - -data-dir=/tmp/consuldata
      - -bind={{ GetInterfaceIP "eth0" }}
      - -client=0.0.0.0
      - -retry-join=seed:8301
      - -ui                                              ##assuming you want the UI on
    networks:
      - "consul"
    ports:
      - "8500:8500"
      - "8600:8600"

networks:
  consul:
    driver: overlay