[系统运维]docker部署zookeeper集群

承接Docker部署单机Zookeeper:
Docker部署单机Zookeeper

配置Zookeeper安装目录

• 配置单机Zookeeper的时候我们建立了/docker/developer/zookeeper目录，类比一下，我们部署zookeeper集群需要至少zookeeper容器，所以建立三个目录：

  • /docker/developer/zookeeper01
  • /docker/developer/zookeeper02
  • /docker/developer/zookeeper03

• 三个目录的配置参照部署单机Zookeeper，都包含conf,data,logs目录

安装和部署zookeeper集群

• 开启三个容器

  # 第一个容器zookeeper01
  docker run -d --privileged=true \
  -v /docker/develop/zookeeper01/conf:/conf \
  -v /docker/develop/zookeeper01/data:/data \
  -v /docker/develop/zookeeper01/logs:/datalog \
  zookeeper:3.4.9
  
  # 第二个容器zookeeper02
  docker run -d --privileged=true \
  -v /docker/develop/zookeeper02/conf:/conf \
  -v /docker/develop/zookeeper02/data:/data \
  -v /docker/develop/zookeeper02/logs:/datalog \
  zookeeper:3.4.9
  
  # 第三个容器zookeeper03
  docker run -d --privileged=true \
  -v /docker/develop/zookeeper03/conf:/conf \
  -v /docker/develop/zookeeper03/data:/data \
  -v /docker/develop/zookeeper03/logs:/datalog \
  zookeeper:3.4.9
  
  

• 查询三个zookeeper容器的IPAddress

  docker inspect zookeeper01 | grep IPAddress  #172.17.0.2
  docker inspect zookeeper02 | grep IPAddress  #172.17.0.3
  docker inspect zookeeper03 | grep IPAddress  #172.17.0.4
  

• 更改zookeeper01,02,03的zoo.cfg文件为：

  dataDir=/data
  dataLogDir=/datalog
  tickTime=2000
  initLimit=5
  syncLimit=2
  autopurge.snapRetainCount=3
  autopurge.purgeInterval=0
  maxClientCnxns=60
  standaloneEnabled=true
  admin.enableServer=true
  4lw.commands.whitelist=*
  clientPort=2181
  
  server.1=172.17.0.2:2888:3888
  server.2=172.17.0.3:2888:3888
  server.3=172.17.0.4:2888:3888
  

• 分别更改/docker/developer/zookeeper01/data/myid,/docker/developer/zookeeper02/data/myid,/docker/developer/zookeeper03/data/myid为1,2,3

进行测试

• 全部重新开始

  docker restart zookeeper01的id
  docker restart zookeeper02的id
  docker restart zookeeper03的id
  

• 进入三个容器中

  docker exec -it zookeeper01的id /bin/bash
  docker exec -it zookeeper02的id /bin/bash
  docker exec -it zookeeper03的id /bin/bash
  

• 分别运行zookeeper Server

  # 三个容器都运行一遍下面代码
  bin/zkServer.sh start
  

• 分别查看一下状态

  bin/zkServer.sh status
  # 会发现有一个是leader，两个是follower