1分钟，通过docker-compose 搭建zookeeper 集群

一、创建三节点 zookeeper 集群

  1. 将 docker-compose.yml 保存到当前命令行目录下

docker-compose.yml 文件

version: '2'
networks:
  zk:
services:
  zookeeper1:
    image: zookeeper
    container_name: zk1.cloud
    networks:
        - zk
    ports:
        - "2181:2181"
    environment:
      ZOO_MY_ID: 1
      ZOO_SERVERS: server.1=0.0.0.0:2888:3888 server.2=zk2.cloud:2888:3888 server.3=zk3.cloud:2888:3888
  zookeeper2:
    image: zookeeper
    container_name: zk2.cloud
    networks:
        - zk
    ports:
        - "2182:2181"
    environment:
      ZOO_MY_ID: 2
      ZOO_SERVERS: server.1=zk1.cloud:2888:3888 server.2=0.0.0.0:2888:3888 server.3=zk3.cloud:2888:3888
  zookeeper3:
    image: zookeeper
    container_name: zk3.cloud
    networks:
        - zk
    ports:
        - "2183:2181"
    environment:
      ZOO_MY_ID: 3
      ZOO_SERVERS: server.1=zk1.cloud:2888:3888 server.2=zk2.cloud:2888:3888 server.3=0.0.0.0:2888:3888
  1. 执行命令，如果是首次获取 zookeeper 镜像，输出会有不同

输入

docker pull zookeeper

输出

latest: Pulling from library/zookeeper
Digest: sha256:3f03c6f5a91e0f638f3d6a755b2d32c06583766031353be87e2d633fa3006c23
Status: Image is up to date for zookeeper:latest

 

  1. 后台启动 zookeeper 集群
docker-compose up -d

 

输出命令

Creating network "dczk_zk" with the default driver
Creating zk2.cloud ... done
Creating zk1.cloud ... done
Creating zk3.cloud ... done

 

二、检查进程状态

输入

docker ps

 

输出

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                        NAMES
cb176c76c620        zookeeper           "/docker-entrypoint.…"   6 minutes ago       Up 6 minutes        2888/tcp, 3888/tcp, 0.0.0.0:2183->2181/tcp   zk3.cloud
ee00aba1c766        zookeeper           "/docker-entrypoint.…"   6 minutes ago       Up 6 minutes        2888/tcp, 0.0.0.0:2181->2181/tcp, 3888/tcp   zk1.cloud
5d95baa693c2        zookeeper           "/docker-entrypoint.…"   6 minutes ago       Up 6 minutes        2888/tcp, 3888/tcp, 0.0.0.0:2182->2181/tcp   zk2.cloud

 

docker-compose ps

 

输出

Name                 Command               State                     Ports
-----------------------------------------------------------------------------------------------
zk1.cloud   /docker-entrypoint.sh zkSe ...   Up      0.0.0.0:2181->2181/tcp, 2888/tcp, 3888/tcp
zk2.cloud   /docker-entrypoint.sh zkSe ...   Up      0.0.0.0:2182->2181/tcp, 2888/tcp, 3888/tcp
zk3.cloud   /docker-entrypoint.sh zkSe ...   Up      0.0.0.0:2183->2181/tcp, 2888/tcp, 3888/tcp

 

三、测试

1. docker 3 为leader

输入

docker exec -it zk1.cloud bash ./bin/zkServer.sh status

 

输出

ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: follower

输入

docker exec -it zk2.cloud bash ./bin/zkServer.sh status

 

输出

ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: follower

输入

docker exec -it zk3.cloud bash ./bin/zkServer.sh status

 

输出

ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: leader

 

2. 关闭 zk3.cloud 后检查leader变化情况

输入

docker stop zk3.cloud
docker exec -it zk2.cloud bash ./bin/zkServer.sh status

输出

ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: leader

 

3. 再次启动 zk3.cloud 后检查 leader变化情况

输入

docker start zk3.cloud
docker exec -it zk2.cloud bash ./bin/zkServer.sh status

输出

ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: leader

输入

docker exec -it zk3.cloud bash ./bin/zkServer.sh status

输出

ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: follower

 

4. 关闭 zk2.cloud 后检查 leader变化情况

输入

docker stop zk2.cloud
docker exec -it zk3.cloud bash ./bin/zkServer.sh status

输出

ZooKeeper JMX enabled by default
Using config: /conf/zoo.cfg
Mode: leader

 

posted on 2018-12-14 14:10  过儿cn  阅读(1253)  评论(0)  编辑  收藏  举报

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