docker compose 搭建zookeeper集群

要使用Docker Compose搭建Zookeeper集群，可以按照以下步骤进行操作：

1. 创建一个Docker Compose文件，例如`docker-compose.yml`，内容如下：

version: '3'

services:
  zookeeper1:
    image: zookeeper:3.6.3
    container_name: zookeeper1
    restart: always
    environment:
      ZOO_MY_ID: 1
      ZOO_SERVERS: server.1=zookeeper1:2888:3888 server.2=zookeeper2:2888:3888 server.3=zookeeper3:2888:3888
    ports:
      - "2181:2181"
      - "2888:2888"
      - "3888:3888"
    volumes:
      - ./data/zookeeper1:/data
      - ./logs/zookeeper1:/datalog

  zookeeper2:
    image: zookeeper:3.6.3
    container_name: zookeeper2
    restart: always
    environment:
      ZOO_MY_ID: 2
      ZOO_SERVERS: server.1=zookeeper1:2888:3888 server.2=zookeeper2:2888:3888 server.3=zookeeper3:2888:3888
    ports:
      - "2182:2181"
      - "2889:2888"
      - "3889:3888"
    volumes:
      - ./data/zookeeper2:/data
      - ./logs/zookeeper2:/datalog

  zookeeper3:
    image: zookeeper:3.6.3
    container_name: zookeeper3
    restart: always
    environment:
      ZOO_MY_ID: 3
      ZOO_SERVERS: server.1=zookeeper1:2888:3888 server.2=zookeeper2:2888:3888 server.3=zookeeper3:2888:3888
    ports:
      - "2183:2181"
      - "2890:2888"
      - "3890:3888"
    volumes:
      - ./data/zookeeper3:/data
      - ./logs/zookeeper3:/datalog

这里定义了三个Zookeeper节点，分别是`zookeeper1`、`zookeeper2`和`zookeeper3`，使用的镜像是官方的`zookeeper:3.6.3`，并分别映射了Zookeeper的端口和数据卷。

2. 创建数据卷目录，例如`./data/zookeeper1`、`./data/zookeeper2`和`./data/zookeeper3`，用于存储Zookeeper的数据。

3. 创建日志目录，例如`./logs/zookeeper1`、`./logs/zookeeper2`和`./logs/zookeeper3`，用于存储Zookeeper的日志。

4. 执行`docker-compose up -d`命令启动Zookeeper集群。

5. 可以通过`docker-compose ps`命令查看Zookeeper节点的状态。

至此，Zookeeper集群就搭建完成了。