镜像下载
docker pull zookeeper
zookeeper 集群的搭建
创建名为docker-compose.yml的文件

输入以下内容

version: '2'

services:

zk1:

image: zookeeper

restart: always

container_name: zk1

ports:

- "2181:2181"

environment:

ZOO_MY_ID: 1

ZOO_SERVERS: server.1=zk1:2888:3888 server.2=zk2:2888:3888 server.3=zk3:2888:3888

zk2:

image: zookeeper

restart: always

container_name: zk2

ports:

- "2182:2181"

environment:

ZOO_MY_ID: 2

ZOO_SERVERS: server.1=zk1:2888:3888 server.2=zk2:2888:3888 server.3=zk3:2888:3888

zk3:

image: zookeeper

restart: always

container_name: zk3

ports:

- "2183:2181"

environment:

ZOO_MY_ID: 3

ZOO_SERVERS: server.1=zk1:2888:3888 server.2=zk2:2888:3888 server.3=zk3:2888:3888

这个配置文件会告诉 Docker 分别运行三个 zookeeper 镜像, 并分别将本地的 2181, 2182, 2183 端口绑定到对应的容器的2181端口上.

ZOO_MY_ID 和 ZOO_SERVERS 是搭建 ZK 集群需要设置的两个环境变量, 其中 ZOO_MY_ID 表示 ZK 服务的 id, 它是1-255 之间的整数, 必须在集群中唯一. ZOO_SERVERS 是ZK 集群的主机列表.

运行zookeeper集群
当前目录下输入命令 COMPOSE_PROJECT_NAME=zk_cluster docker-compose up -d

ok