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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