启动ZK服务
bin/zkServer.sh start
查看ZK服务状态
bin/zkServer.sh status
停止ZK服务
bin/zkServer.sh stop
重启ZK服务
bin/zkServer.sh restart
连接服务器
zkCli.sh -server 127.0.0.1:2181
运行 zkCli.sh –server <ip>进入命令行工具
在192.168.106.82服务器上连接到192.168.106.81服务器下的zk
[root@hadoop3bin]# zkCli.sh -server 192.168.106.81:2181
查看根目录：
[zk: 192.168.106.81:2181(CONNECTED) 0] ls /
[zookeeper, mygirls]
查看其它节点中的内容
[zk: 192.168.106.81:2181(CONNECTED) 1] ls /mygirls
[liuyifei, angelababy]
[zk: 192.168.106.81:2181(CONNECTED) 2] ls /zookeeper
[quota]
创建testnode节点，关联字符串”zz”
[zk: 192.168.106.81:2181(CONNECTED) 3] create /zookeeper/testnode "zzzzzzz"
Created /zookeeper/testnode
[zk: 192.168.106.81:2181(CONNECTED) 4] get /mygirls
lsadasdasd
cZxid = 0x800000002
ctime = Wed Jan 04 23:26:09 CST 2017
mZxid = 0x80000000c
mtime = Wed Jan 04 23:38:06 CST 2017
pZxid = 0x800000004
cversion = 2
dataVersion = 6
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 10
numChildren = 2
[zk: 192.168.106.81:2181(CONNECTED) 5]
设置节点内容
[zk: 192.168.106.81:2181(CONNECTED) 6] ls /mygirls
[liuyifei, angelababy]
[zk: 192.168.106.81:2181(CONNECTED) 7] set /mygirls/liuyifei aaaaaaa
cZxid = 0x800000003
ctime = Wed Jan 04 23:27:56 CST 2017
mZxid = 0x800000010
mtime = Thu Jan 05 00:50:37 CST 2017
pZxid = 0x800000003
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
[zk: 192.168.106.81:2181(CONNECTED) 8] get /mygirls/liuyifei
aaaaaaa
cZxid = 0x800000003
ctime = Wed Jan 04 23:27:56 CST 2017
mZxid = 0x800000010
mtime = Thu Jan 05 00:50:37 CST 2017
pZxid = 0x800000003
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
[zk: 192.168.106.81:2181(CONNECTED) 9]
删除节点
[zk: 192.168.106.81:2181(CONNECTED) 15] ls /zookeeper
[testnode, quota]
[zk: 192.168.106.81:2181(CONNECTED) 16] delete /zookeeper/testnode
[zk: 192.168.106.81:2181(CONNECTED) 17] ls /zookeeper
[quota]
[zk: 192.168.106.81:2181(CONNECTED) 18]
退出客户端的命令：quit
[zk: 192.168.106.81:2181(CONNECTED) 18] quit
Quitting...
2017-01-05 00:58:21,076 [myid:] - INFO [main:ZooKeeper@684] - Session: 0x25969e0732e0001 closed
2017-01-05 00:58:21,076 [myid:] - INFO [main-EventThread:ClientCnxn$EventThread@509] - EventThread shut down
[root@hadoop3 bin]#
ls /mygirls watch ## 就对一个节点的子节点变化事件注册了监听
当在82服务器上写ls /mygirls watch的时候，在81上创建一个znode,发现80上的上图出现提醒。
get /mygirls watch ## 就对一个节点的数据内容变化事件注册了监听
开始的时候在80上执行get /mygirls watch，接着在81上执行set /mygirls bbbbbb，执行完成之后，发现在80上的右上角有消息提醒。
注意：监听器只生效一次
监听器的工作机制，其实是在客户端会专门创建一个监听线程，在本机的一个端口上等待zk集群发送过来事件
telnet 192.168.106.82 2181
成功之后，输入conf，会出现一下内容：
clientPort=2181
dataDir=/home/tuzq/software/zookeeper/zkdata/version-2
dataLogDir=/home/tuzq/software/zookeeper/log/version-2
tickTime=2000
maxClientCnxns=60
minSessionTimeout=4000
maxSessionTimeout=40000
serverId=3
initLimit=10
syncLimit=5
electionAlg=3
electionPort=3888
quorumPort=2888
peerType=0
