Redis Sentinel example with Docker Compose

docker-compose.yml

services:
  redis-master:
    image: redis:latest
    container_name: redis-master
    hostname: redis-master
    ports:
      - "6379:6379"
    volumes:
      - ./data/master:/data
    command:
      [
        "redis-server",
        "--appendonly",
        "yes",
        "--repl-diskless-load",
        "on-empty-db",
        "--protected-mode",
        "no"
      ]

  redis-slave-1:
    image: redis:latest
    container_name: redis-slave-1
    hostname: redis-slave-1
    depends_on:
      - redis-master
    ports:
      - "6380:6379"
    volumes:
      - ./data/slave1:/data
    command:
      [
        "redis-server",
        "--appendonly",
        "yes",
        "--replicaof",
        "redis-master",
        "6379",
        "--repl-diskless-load",
        "on-empty-db",
        "--protected-mode",
        "no"
      ]

  redis-slave-2:
    image: redis:latest
    container_name: redis-slave-2
    hostname: redis-slave-2
    depends_on:
      - redis-master
    ports:
      - "6381:6379"
    volumes:
      - ./data/slave2:/data
    command:
      [
        "redis-server",
        "--appendonly",
        "yes",
        "--replicaof",
        "redis-master",
        "6379",
        "--repl-diskless-load",
        "on-empty-db",
        "--protected-mode",
        "no"
      ]

  sentinel-1:
    image: redis:latest
    container_name: sentinel-1
    hostname: sentinel-1
    depends_on:
      - redis-master
    ports:
      - "26379:26379"
    command: >
      sh -c 'echo "bind 0.0.0.0" > /etc/sentinel.conf &&
            echo "sentinel monitor mymaster redis-master 6379 2" >> /etc/sentinel.conf &&
            echo "sentinel resolve-hostnames yes" >> /etc/sentinel.conf &&
            echo "sentinel down-after-milliseconds mymaster 10000" >> /etc/sentinel.conf &&
            echo "sentinel failover-timeout mymaster 10000" >> /etc/sentinel.conf &&
            echo "sentinel parallel-syncs mymaster 1" >> /etc/sentinel.conf &&
            redis-sentinel /etc/sentinel.conf'

  sentinel-2:
    image: redis:latest
    container_name: sentinel-2
    hostname: sentinel-2
    depends_on:
      - redis-master
    ports:
      - "26380:26379"
    command: >
      sh -c 'echo "bind 0.0.0.0" > /etc/sentinel.conf &&
            echo "sentinel monitor mymaster redis-master 6379 2" >> /etc/sentinel.conf &&
            echo "sentinel resolve-hostnames yes" >> /etc/sentinel.conf &&
            echo "sentinel down-after-milliseconds mymaster 10000" >> /etc/sentinel.conf &&
            echo "sentinel failover-timeout mymaster 10000" >> /etc/sentinel.conf &&
            echo "sentinel parallel-syncs mymaster 1" >> /etc/sentinel.conf &&
            redis-sentinel /etc/sentinel.conf'

  sentinel-3:
    image: redis:latest
    container_name: sentinel-3
    hostname: sentinel-3
    depends_on:
      - redis-master
    ports:
      - "26381:26379"
    command: >
      sh -c 'echo "bind 0.0.0.0" > /etc/sentinel.conf &&
            echo "sentinel monitor mymaster redis-master 6379 2" >> /etc/sentinel.conf &&
            echo "sentinel resolve-hostnames yes" >> /etc/sentinel.conf &&
            echo "sentinel down-after-milliseconds mymaster 10000" >> /etc/sentinel.conf &&
            echo "sentinel failover-timeout mymaster 10000" >> /etc/sentinel.conf &&
            echo "sentinel parallel-syncs mymaster 1" >> /etc/sentinel.conf &&
            redis-sentinel /etc/sentinel.conf'