Active-Passive Redis Cluster

docker-compose.yml

version: '3.5'
services:
  master:
    image: redis:5
    command: ["redis-server", "--appendonly", "yes"]
    volumes:
      - db:/data
    ports:
      - target: 6379
        published: 6379
        mode: host
    deploy:
      mode: global
      placement:
        constraints: [node.labels.redis == master]
  slave:
    image: redis:5
    command: ["redis-server", "--slaveof", "master", "6379", "--appendonly", "yes"]
    volumes:
      - db:/data
    ports:
      - target: 6379
        published: 6379
        mode: host
    depends_on:
      - master
    deploy:
      mode: global
      placement:
        constraints: [node.labels.redis == slave]
volumes:
  db: {}