Zookeeper客户端命令行操作

命令基本语法	功能描述
help	显示所有操作命令
ls path [watch]	使用 ls 命令来查看当前znode中所包含的内容
ls2 path [watch]	查看当前节点数据并能看到更新次数等数据
create	普通创建 -s 含有序列 -e 临时（重启或者超时消失）
get path [watch]	获得节点的值
set	设置节点的具体值
stat	查看节点状态
delete	删除节点
rmr	递归删除节点

1．启动客户端

[atguigu@hadoop103 zookeeper-3.4.10]$ bin/zkCli.sh

2．显示所有操作命令

[zk: localhost:2181(CONNECTED) 1] help

3．查看当前znode中所包含的内容

[zk: localhost:2181(CONNECTED) 0] ls /

[zookeeper]

4．查看当前节点详细数据

[zk: localhost:2181(CONNECTED) 1] ls2 /

[zookeeper]

cZxid = 0x0

ctime = Thu Jan 01 08:00:00 CST 1970

mZxid = 0x0

mtime = Thu Jan 01 08:00:00 CST 1970

pZxid = 0x0

cversion = -1

dataVersion = 0

aclVersion = 0

ephemeralOwner = 0x0

dataLength = 0

numChildren = 1

5．分别创建2个普通节点

[zk: localhost:2181(CONNECTED) 3] create /sanguo "jinlian"

Created /sanguo

[zk: localhost:2181(CONNECTED) 4] create /sanguo/shuguo "liubei"

Created /sanguo/shuguo

6．获得节点的值

[zk: localhost:2181(CONNECTED) 5] get /sanguo

jinlian

cZxid = 0x100000003

ctime = Wed Aug 29 00:03:23 CST 2018

mZxid = 0x100000003

mtime = Wed Aug 29 00:03:23 CST 2018

pZxid = 0x100000004

cversion = 1

dataVersion = 0

aclVersion = 0

ephemeralOwner = 0x0

dataLength = 7

numChildren = 1

[zk: localhost:2181(CONNECTED) 6]

[zk: localhost:2181(CONNECTED) 6] get /sanguo/shuguo

liubei

cZxid = 0x100000004

ctime = Wed Aug 29 00:04:35 CST 2018

mZxid = 0x100000004

mtime = Wed Aug 29 00:04:35 CST 2018

pZxid = 0x100000004

cversion = 0

dataVersion = 0

aclVersion = 0

ephemeralOwner = 0x0

dataLength = 6

numChildren = 0

7．创建短暂节点

[zk: localhost:2181(CONNECTED) 7] create -e /sanguo/wuguo "zhouyu"

Created /sanguo/wuguo

（1）在当前客户端是能查看到的

[zk: localhost:2181(CONNECTED) 3] ls /sanguo

[wuguo, shuguo]

（2）退出当前客户端然后再重启客户端

[zk: localhost:2181(CONNECTED) 12] quit

[atguigu@hadoop104 zookeeper-3.4.10]$ bin/zkCli.sh

（3）再次查看根目录下短暂节点已经删除

[zk: localhost:2181(CONNECTED) 0] ls /sanguo

[shuguo]

8．创建带序号的节点

（1）先创建一个普通的根节点/sanguo/weiguo

[zk: localhost:2181(CONNECTED) 1] create /sanguo/weiguo "caocao"

Created /sanguo/weiguo

（2）创建带序号的节点

[zk: localhost:2181(CONNECTED) 2] create -s /sanguo/weiguo/xiaoqiao "jinlian"

Created /sanguo/weiguo/xiaoqiao0000000000

[zk: localhost:2181(CONNECTED) 3] create -s /sanguo/weiguo/daqiao "jinlian"

Created /sanguo/weiguo/daqiao0000000001

[zk: localhost:2181(CONNECTED) 4] create -s /sanguo/weiguo/diaocan "jinlian"

Created /sanguo/weiguo/diaocan0000000002

如果原来没有序号节点，序号从0开始依次递增。如果原节点下已有2个节点，则再排序时从2开始，以此类推。

9．修改节点数据值

[zk: localhost:2181(CONNECTED) 6] set /sanguo/weiguo "simayi"

10．节点的值变化监听

（1）在hadoop104主机上注册监听/sanguo节点数据变化

[zk: localhost:2181(CONNECTED) 26] [zk: localhost:2181(CONNECTED) 8] get /sanguo watch

（2）在hadoop103主机上修改/sanguo节点的数据

[zk: localhost:2181(CONNECTED) 1] set /sanguo "xisi"

（3）观察hadoop104主机收到数据变化的监听

WATCHER::

WatchedEvent state:SyncConnected type:NodeDataChanged path:/sanguo

11．节点的子节点变化监听（路径变化）

（1）在hadoop104主机上注册监听/sanguo节点的子节点变化

[zk: localhost:2181(CONNECTED) 1] ls /sanguo watch

[aa0000000001, server101]

（2）在hadoop103主机/sanguo节点上创建子节点

[zk: localhost:2181(CONNECTED) 2] create /sanguo/jin "simayi"

Created /sanguo/jin

（3）观察hadoop104主机收到子节点变化的监听

WATCHER::

WatchedEvent state:SyncConnected type:NodeChildrenChanged path:/sanguo

12．删除节点

[zk: localhost:2181(CONNECTED) 4] delete /sanguo/jin

13．递归删除节点

[zk: localhost:2181(CONNECTED) 15] rmr /sanguo/shuguo

14．查看节点状态

[zk: localhost:2181(CONNECTED) 17] stat /sanguo

cZxid = 0x100000003

ctime = Wed Aug 29 00:03:23 CST 2018

mZxid = 0x100000011

mtime = Wed Aug 29 00:21:23 CST 2018

pZxid = 0x100000014

cversion = 9

dataVersion = 1

aclVersion = 0

ephemeralOwner = 0x0

dataLength = 4

numChildren = 1

Zookeeper客户端命令行操作

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