Docker安装Zookeeper，zookeeper集群

前置工作：
centos7下Docker的安装部署

docker search zookeeper

docker pull zookeeper

docker run --name myzookeeper -p 2181:2181 --restart always -d zookeeper 

说明：-p指定端口启动 :前的端口是linux虚拟机的端口 :后的端口是指docker容器的端口 2181:2181意思是指 把linux系统的2181端口映射到docker容器的2181端口

version: '3.5'
services:
    zoo1:
        image: zookeeper
        restart: always
        hostname: zoo1
        ports:
            - 2181:2181
        environment:
            ZOO_MY_ID: 1
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888

    zoo2:
        image: zookeeper
        restart: always
        hostname: zoo2
        ports:
            - 2182:2181
        environment:
            ZOO_MY_ID: 2
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888

    zoo3:
        image: zookeeper
        restart: always
        hostname: zoo3
        ports:
            - 2183:2181
        environment:
            ZOO_MY_ID: 3
            ZOO_SERVERS: server.1=zoo1:2888:3888 server.2=zoo2:2888:3888 server.3=zoo3:2888:3888

此为搭建 zookeeper 伪集群的文件，下载后可直接使用 docker-compose up -d 运行
该文件配置的 zookeeper 端口为 2181 2182 2183，可自行修改端口