docker-compose.yml

version: '3'
services:
  proxy:
    image: dockercloud/haproxy
    depends_on:
      - broker
    environment:
      - BALANCE=leastconn
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    ports:
      - 80:80
    networks:
      - balancenet
    deploy:
      placement:
        constraints: [node.role == manager]

  broker:
    environment:
      - SERVICE_PORTS=1883
    env_file:
      - .env
    build: .
    ports:
      - "1883:1883"
    deploy:
      replicas: 4
      update_config:
        parallelism: 4
        delay: 10s
      restart_policy:
        condition: on-failure
        max_attempts: 3
        window: 120s
    networks:
      - brokernet
      - balancenet
    depends_on:
      - redis

  redis:
    image: "redis:alpine"
    command: ["redis-server", "--appendonly", "yes"]
    hostname: redis
    restart: always
    volumes:
      - redis-data:/data
    ports:
      - "6379:6379"
    networks:
      - brokernet

networks:
  brokernet:
  balancenet:
    driver: overlay
volumes:
  redis-data: