services:
  zookeeper:
    image: registry.cn-chengdu.aliyuncs.com/reghao/zookeeper:3.8.4
    restart: always
    container_name: zookeeper
    hostname: node211
    ports:
      - "2181:2181"
      - "2888:2888" # 🚨 集群必须暴露：原子广播端口
      - "3888:3888" # 🚨 集群必须暴露：Leader选举端口
    volumes:
      - /opt/docker/zookeeper/data:/data
      - /opt/docker/zookeeper/datalog:/datalog
      - /opt/docker/zookeeper/logs:/logs
    environment:
      ZOO_MY_ID: 1  # 🚨 机器1固定为 1
      # 🚨 核心：用双引号包裹的全局集群视图（三台机器此项完全一致）
      ZOO_SERVERS: "server.1=192.168.0.211:2888:3888;2181,server.2=192.168.0.212:2888:3888;2181,server.3=192.168.0.213:2888:3888;2181"
      ZOO_AUTOPURGE_PURGEINTERVAL: 24
      ZOO_AUTOPURGE_SNAPRETAINCOUNT: 5
      ZOO_LOG4J_PROP: "INFO, ROLLINGFILE"
      ZOO_LOG_MAXFILESIZE: "100MB"
      ZOO_LOG_MAXBACKUPINDEX: 10
      JVMFLAGS: "-Xms512m -Xmx512m"
      ZOO_MAX_CLIENT_CNXNS: 60
    deploy:
      resources:
        limits:
          cpus: '1.0'
          memory: 1G
        reservations:
          cpus: '0.5'
          memory: 512M
    logging:
      driver: "json-file"
      options:
        max-size: "100m"
        max-file: "3"
    healthcheck:
      test: ["CMD", "zkServer.sh", "status"]
      interval: 15s      # 🚨 适当延长检查间隔，给集群选举留出时间
      timeout: 5s
      retries: 5         # 🚨 增加重试次数，防止因同伴未拉起被 Docker 误杀
      start_period: 20s  # 🚨 给 20 秒宽限期