## docker-compose 配置文件 创建一个配置文件 docker-compose.yml ，内容如下： ```yaml version: '3.1' services: zoo1: image: zookeeper restart: always hostname: zoo1 ports: - 2181:2181 environment: ZOO_MY_ID: 1 ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181 zoo2: image: zookeeper restart: always hostname: zoo2 ports: - 2182:2181 environment: ZOO_MY_ID: 2 ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181 zoo3: image: zookeeper restart: always hostname: zoo3 ports: - 2183:2181 environment: ZOO_MY_ID: 3 ZOO_SERVERS: server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181 ``` ## 启动 执行 `docker-compose up -d` 运行容器 ## 查看状态 执行 `docker ps` 查看容器状态 ```shell CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 95f80f321850 zookeeper "/docker-entrypoint.…" 3 minutes ago Up 3 minutes 2888/tcp, 3888/tcp, 0.0.0.0:2181->2181/tcp, 8080/tcp zookeeper_zoo1_1 baabad3ea4a5 zookeeper "/docker-entrypoint.…" 3 minutes ago Up 3 minutes 2888/tcp, 3888/tcp, 8080/tcp, 0.0.0.0:2182->2181/tcp zookeeper_zoo2_1 dd11960d4623 zookeeper "/docker-entrypoint.…" 3 minutes ago Up 3 minutes 2888/tcp, 3888/tcp, 8080/tcp, 0.0.0.0:2183->2181/tcp zookeeper_zoo3_1 ``` 交互式进入容器： 执行 `docker exec -it zookeeper_zoo1_1 /bin/bash` 命令， 继续执行 `cd bin` ， `./zkServer.sh status` ： ```shell root@zoo1:/apache-zookeeper-3.6.2-bin# cd bin root@zoo1:/apache-zookeeper-3.6.2-bin/bin# ./zkServer.sh status ZooKeeper JMX enabled by default Using config: /conf/zoo.cfg Client port found: 2181. Client address: localhost. Client SSL: false. Mode: follower ``` 可以看到当前节点为`follower`，也就是从节点。同理可查看其它节点。 使用的配置文件是自动创建的`/conf/zoo.cfg`文件，可以用`cat`查看配置内容： ```shell dataDir=/data dataLogDir=/datalog tickTime=2000 initLimit=5 syncLimit=2 autopurge.snapRetainCount=3 autopurge.purgeInterval=0 maxClientCnxns=60 standaloneEnabled=true admin.enableServer=true server.1=zoo1:2888:3888;2181 server.2=zoo2:2888:3888;2181 server.3=zoo3:2888:3888;2181 ```