zookper伪集群安装

所谓伪集群, 是指在单台机器中启动多个zookeeper进程, 并组成一个集群. 以启动3个zookeeper进程为例.

1.将zookeeper的目录拷贝2份:

|--zookeeper0  
|--zookeeper1  
|--zookeeper2

2. 更改zookeeper0/conf/zoo.cfg文件为:

tickTime=2000    
initLimit=5    
syncLimit=2    
dataDir=/Users/apple/zookeeper0/data    
dataLogDir=/Users/apple/zookeeper0/logs    
clientPort=4180  
server.0=127.0.0.1:8880:7770    
server.1=127.0.0.1:8881:7771    
server.2=127.0.0.1:8882:7772  

参照zookeeper0/conf/zoo.cfg, 配置zookeeper1/conf/zoo.cfg, 和zookeeper2/conf/zoo.cfg文件. 只需更改dataDir, dataLogDir, clientPort参数即可.

在之前设置的dataDir中新建myid文件, 写入一个数字, 该数字表示这是第几号server. 该数字必须和zoo.cfg文件中的server.X中的X一一对应.
/Users/apple/zookeeper0/data/myid文件中写入0, /Users/apple/zookeeper1/data/myid文件中写入1, /Users/apple/zookeeper2/data/myid文件中写入2.
2.启动
分别进入/Users/apple/zookeeper0/bin, /Users/apple/zookeeper1/bin, /Users/apple/zookeeper2/bin三个目录, 启动server.

3.任意选择一个server目录, 启动客户端:
bin/zkCli.sh -server localhost:4180