zookeeper 集群搭建

前言

由于机器数量有限，zk集群搭建采用单机伪集群模拟三台zk节点的方式进行搭建。

搭建环境

jdk version 1.8.0_92(64bit)
zookeeper version 3.4.9
centos6.5 linux 2.6.32-431.23.3.el6.x86_64

搭建过程

新建zookeeper-cluster目录
cd /usr/local/
mkdir zookeeper-cluster

下载zookeeper-3.4.9.tar.gz包

wget http://mirrors.cnnic.cn/apache/zookeeper/zookeeper-3.4.9/zookeeper-3.4.9.tar.gz

解压压缩包
tar -zxvf zookeeper-3.4.9.tar.gz

修改zookeeper-3.4.9文件夹名称并复制三份

mv zookeeper-3.4.9 zk-node1
cp -r zk-node1/ zk-node2/
cp -r zk-node1/ zk-node3/

mkdir /usr/local/zookeeper-cluster/zk-node1/data
mkdir /usr/local/zookeeper-cluster/zk-node1/log

mkdir /usr/local/zookeeper-cluster/zk-node2/data
mkdir /usr/local/zookeeper-cluster/zk-node2/log

mkdir /usr/local/zookeeper-cluster/zk-node3/data
mkdir /usr/local/zookeeper-cluster/zk-node3/log

创建各节点myid文件并写入对应节点编号

echo 1 > /usr/local/zookeeper-cluster/zk-node1/data/myid
echo 2 > /usr/local/zookeeper-cluster/zk-node2/data/myid
echo 3 > /usr/local/zookeeper-cluster/zk-node3/data/myid

修改各节点配置文件名称
cp zoo_sample.cfg zoo.cfg

修改各节点zoo.cfg配置

#zk-node1配置
vim /usr/local/zookeeper-cluster/zk-node1/conf/zoo.cfg
dataDir=/usr/local/zookeeper-cluster/zk-node1/data
dataLogDir=/usr/local/zookeeper-cluster/zk-node1/log
clientPort=2181
tickTime=2000
initLimit=5
syncLimit=2
server.1=127.0.0.1:1888:1999
server.2=127.0.0.1:2888:2999
server.3=127.0.0.1:3888:3999

#zk-node2配置
vim /usr/local/zookeeper-cluster/zk-node2/conf/zoo.cfg
dataDir=/usr/local/zookeeper-cluster/zk-node2/data
dataLogDir=/usr/local/zookeeper-cluster/zk-node2/log
clientPort=2182
tickTime=2000
initLimit=5
syncLimit=2
server.1=127.0.0.1:1888:1999
server.2=127.0.0.1:2888:2999
server.3=127.0.0.1:3888:3999

#zk-node3配置
vim /usr/local/zookeeper-cluster/zk-node3/conf/zoo.cfg
dataDir=/usr/local/zookeeper-cluster/zk-node3/data
dataLogDir=/usr/local/zookeeper-cluster/zk-node3/log
clientPort=2183
tickTime=2000
initLimit=5
syncLimit=2
server.1=127.0.0.1:1888:1999
server.2=127.0.0.1:2888:2999
server.3=127.0.0.1:3888:3999

节点服务操作

/usr/local/zookeeper-cluster/zk-node1/bin/zkServer.sh start
/usr/local/zookeeper-cluster/zk-node1/bin/zkServer.sh stop
/usr/local/zookeeper-cluster/zk-node1/bin/zkServer.sh status
/usr/local/zookeeper-cluster/zk-node1/bin/zkServer.sh restart

创建zk集群启动停止脚本

cd /usr/local/zookeeper-cluster
touch zkClusterServer.sh

#----------------------------脚本代码(开始)----------------------------#
#!/bin/bash
#author:lipan
#time:2017-02-05
#description:zk集群启动，关闭，重启脚本

start(){
  /usr/local/zookeeper-cluster/zk-node1/bin/zkServer.sh start
  echo 'zk-node1 start success...'
  sleep 1
  /usr/local/zookeeper-cluster/zk-node2/bin/zkServer.sh start
  echo 'zk-node2 start success...'
  sleep 2
  /usr/local/zookeeper-cluster/zk-node3/bin/zkServer.sh start
  echo 'zk-node3 start success...'
}

stop(){
  /usr/local/zookeeper-cluster/zk-node1/bin/zkServer.sh stop
  echo 'zk-node1 stop success...'
  sleep 2
  /usr/local/zookeeper-cluster/zk-node2/bin/zkServer.sh stop
  echo 'zk-node2 stop success...'
  sleep 1
  /usr/local/zookeeper-cluster/zk-node3/bin/zkServer.sh stop
  echo 'zk-node3 stop success...'
}

status(){
  /usr/local/zookeeper-cluster/zk-node1/bin/zkServer.sh status
  /usr/local/zookeeper-cluster/zk-node2/bin/zkServer.sh status
  /usr/local/zookeeper-cluster/zk-node3/bin/zkServer.sh status
}

case "$1" in 
start)
   start 
   ;;
stop)
   stop
   ;;
status)
   status
   ;;  
restart)
   stop
   sleep 1
   start
   ;;     
*)
  echo 'command is error...'
  echo 'please choose right command：start|stop|status|restart.'
  ;;
esac
exit 0
#----------------------------脚本代码(结束)----------------------------#

赋予脚本执行权限：chmod +x zkClusterServer.sh

zk集群启动关闭重启操作

./zkClusterServer.sh start
./zkClusterServer.sh stop
./zkClusterServer.sh status
./zkClusterServer.sh restart

集群运行状态

参考链接

http://zookeeper.apache.org/