docker-compose.yml

volumes:
  redis_1_data: {}
  redis_2_data: {}
  redis_3_data: {}
  redis_4_data: {}
  redis_5_data: {}
  redis_6_data: {}
  # This volume is specific for the demo Express application
  # built in this repo. You probably won't need that on your own setup.
  node_modules: {}

services:
  app:
    container_name: express_app
    build:
      context: .
    environment:
      PORT: 4000
      NODE_ENV: production
      REDIS_CLUSTER_URLS: "redis_1:6379,redis_2:6379,redis_3:6379,redis_4:6379,redis_5:6379,redis_6:6379"
    volumes:
      - .:/app
      - node_modules:/app/node_modules
    command: ["npm", "run", "dev"]
    depends_on:
      - redis_1
      - redis_2
      - redis_3
      - redis_4
      - redis_5
      - redis_6
      - cluster_initiator
    ports:
      - "4000:4000"
    stdin_open: true
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.10

  # Here we have six Redis containers with Cluster mode enabled,
  # three of them will work as master nodes and each one of
  # will have a replica, so in case of failures, the replica becomes the master.
  # They are configured by the `cluster_initiator` container.
  redis_1:
    image: "redis:latest"
    container_name: redis_1
    ports:
      - "6379"
    volumes:
      - redis_1_data:/data
      - ./redis/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.2

  redis_2:
    image: "redis:latest"
    container_name: redis_2
    ports:
      - "6379"
    volumes:
      - redis_2_data:/data
      - ./redis/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.3

  redis_3:
    image: "redis:latest"
    container_name: redis_3
    ports:
      - "6379"
    volumes:
      - redis_3_data:/data
      - ./redis/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.4

  redis_4:
    image: "redis:latest"
    container_name: redis_4
    ports:
      - "6379"
    volumes:
      - redis_4_data:/data
      - ./redis/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.5

  redis_5:
    image: "redis:latest"
    container_name: redis_5
    ports:
      - "6379"
    volumes:
      - redis_5_data:/data
      - ./redis/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.6

  redis_6:
    image: "redis:latest"
    container_name: redis_6
    ports:
      - "6379"
    volumes:
      - redis_6_data:/data
      - ./redis/redis.conf:/usr/local/etc/redis/redis.conf
    command: ["redis-server", "/usr/local/etc/redis/redis.conf"]
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.7

  # Ephemeral container to create the Redis cluster connections.
  # Once the setup is done, this container shuts down
  # and the cluster can be used by the service app container
  cluster_initiator:
    container_name: cluster_initiator
    build:
      context: redis
      dockerfile: Dockerfile
    tty: true
    depends_on:
      - redis_1
      - redis_2
      - redis_3
      - redis_4
      - redis_5
      - redis_6
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.8

  # Web UI to browse through our Redis data across all nodes
  redis_commander:
    image: rediscommander/redis-commander:latest
    container_name: redis_web
    environment:
      REDIS_HOSTS: "local:redis_1:6379,local:redis_2:6379,local:redis_3:6379"
    ports:
      - "5050:8081"
    depends_on:
      - redis_1
      - redis_2
      - redis_3
      - redis_4
      - redis_5
      - redis_6
      - cluster_initiator
    networks:
      redis_cluster_net:
        ipv4_address: 173.18.0.9

# Rename the default network so we can easily identify it
# Across all containers
networks:
  redis_cluster_net:
    driver: bridge
    ipam:
      driver: default
      config:
        - subnet: 173.18.0.0/16