centos7 搭建zookeeper环境

一、单机部署zookeeper

1. 从官网下载zookeeper安装包(路径：/opt)
2. tar -zxvf zookeeper-3.4.10.tar.gz zookeeper
3. cd zookeeper/conf
4. cp zoo_sample.cfg zoo.cfg，编辑如下

   tickTime=2000
   initLimit=10
   syncLimit=5
   dataDir=/opt/zookeeper/data
   clientPort=2181
   dataLogDir=/opt/zookeeper/logs
   server.1=localhost:2888:3888
   

5. 准备启动环境

   mkdir /var/lib/zookeeper
   mkdir /opt/zookeeper/logs
   echo "1" > /tmp/zookeeper/myid
   

6. /opt/zookeeper/bin/zkServer.sh start 启动zookeeper
7. jps 查询zookeeper运行状态

二、集群，按照上述配置多台（奇数）。

三、伪集群部署

1. 同样解压文件（/opt/zookeeper）。

2. 创建配置文件

   cd zookeeper/conf
   cp zoo_sample.cfg zoo1.cfg
   cp zoo_sample.cfg zoo2.cfg
   cp zoo_sample.cfg zoo3.cfg
   

3. zoo1.cfg 如下

   tickTime=2000
   initLimit=10
   syncLimit=5
   dataDir=/opt/zookeeper/data/d_1
   clientPort=2181
   dataLogDir=/opt/zookeeper/logs/log_1
   server.1=localhost:2887:3887
   server.2=localhost:2888:3888
   server.3=localhost:2889:3889
   

   zoo2.cfg 如下

   tickTime=2000
   initLimit=10
   syncLimit=5
   dataDir=/opt/zookeeper/data/d_2
   clientPort=2182
   dataLogDir=/opt/zookeeper/logs/log_2
   server.1=localhost:2887:3887
   server.2=localhost:2888:3888
   server.3=localhost:2889:3889
   

   zoo3.cfg 如下

   tickTime=2000
   initLimit=10
   syncLimit=5
   dataDir=/opt/zookeeper/data/d_3
   clientPort=2183
   dataLogDir=/opt/zookeeper/logs/log_3
   server.1=localhost:2887:3887
   server.2=localhost:2888:3888
   server.3=localhost:2889:3889
   

4. 启动前目录创建

   mkdir /opt/zookeeper/data/d_1
   mkdir /opt/zookeeper/data/d_2
   mkdir /opt/zookeeper/data/d_3
   
   mkdir /opt/zookeeper/logs/log_1
   mkdir /opt/zookeeper/logs/log_2
   mkdir /opt/zookeeper/logs/log_3
   
   echo "1" > /opt/zookeeper/data/d_1/myid
   echo "2" > /opt/zookeeper/data/d_2/myid
   echo "3" > /opt/zookeeper/data/d_3/myid
   

5. 启动集群

   cd /opt/zookeeper/bin
   ./zkServer.sh start zoo1.cfg
   ./zkServer.sh start zoo2.cfg
   ./zkServer.sh start zoo3.cfg
   

6. jps 查看进程

   #出现下面三个实例表示成功
   1794 Jps
   1735 QuorumPeerMain
   1689 QuorumPeerMain
   1710 QuorumPeerMain