zookeeper客戶端命令行操作

 

命令基本語法	功能描述
help	顯示所有操作命令
ls path [watch]	使用 ls 命令來查看當前znode中所包含的內容
ls2 path [watch]	查看當前節點數據並能看到更新次數等數據
create	普通創建 -s  含有序列 -e  臨時（重啟或者超時消失）
get path [watch]	獲得節點的值
set	設置節點的具體值
stat	查看節點狀態
delete	刪除節點
rmr	遞歸刪除節點

1）啟動客戶端

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

2）顯示所有操作命令

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

3）查看當前znode中所包含的內容

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

[zookeeper]

4）查看當前節點數據並能看到更新次數等數據

[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）創建普通節點

[zk: localhost:2181(CONNECTED) 2] create /app1 "hello app1"

Created /app1

[zk: localhost:2181(CONNECTED) 4] create /app1/server101 "192.168.1.101"

Created /app1/server101

6）獲得節點的值

[zk: localhost:2181(CONNECTED) 6] get /app1

hello app1

cZxid = 0x20000000a

ctime = Mon Jul 17 16:08:35 CST 2017

mZxid = 0x20000000a

mtime = Mon Jul 17 16:08:35 CST 2017

pZxid = 0x20000000b

cversion = 1

dataVersion = 0

aclVersion = 0

ephemeralOwner = 0x0

dataLength = 10

numChildren = 1

[zk: localhost:2181(CONNECTED) 8] get /app1/server101

192.168.1.101

cZxid = 0x20000000b

ctime = Mon Jul 17 16:11:04 CST 2017

mZxid = 0x20000000b

mtime = Mon Jul 17 16:11:04 CST 2017

pZxid = 0x20000000b

cversion = 0

dataVersion = 0

aclVersion = 0

ephemeralOwner = 0x0

dataLength = 13

numChildren = 0

7）創建短暫節點

[zk: localhost:2181(CONNECTED) 9] create -e /app-emphemeral 8888

（1）在當前客戶端是能查看到的

[zk: localhost:2181(CONNECTED) 10] ls /

[app1, app-emphemeral, zookeeper]

（2）退出當前客戶端然后再重啟啟動客戶端

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

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

（3）再次查看根目錄下短暫節點已經刪除

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

[app1, zookeeper]

8）創建帶序號的節點

（1）先創建一個普通的根節點app2

[zk: localhost:2181(CONNECTED) 11] create /app2 "app2"

（2）創建帶序號的節點

[zk: localhost:2181(CONNECTED) 13] create -s /app2/aa 888

Created /app2/aa0000000000

[zk: localhost:2181(CONNECTED) 14] create -s /app2/bb 888

Created /app2/bb0000000001

[zk: localhost:2181(CONNECTED) 15] create -s /app2/cc 888

Created /app2/cc0000000002

如果原節點下有1個節點，則再排序時從1開始，以此類推。

[zk: localhost:2181(CONNECTED) 16] create -s /app1/aa 888

Created /app1/aa0000000001

9）修改節點數據值

[zk: localhost:2181(CONNECTED) 2] set /app1 999

10）節點的值變化監聽

（1）在104主機上注冊監聽/app1節點數據變化

[zk: localhost:2181(CONNECTED) 26] get /app1 watch

（2）在103主機上修改/app1節點的數據

[zk: localhost:2181(CONNECTED) 5] set /app1  777

（3）觀察104主機收到數據變化的監聽

WATCHER::

WatchedEvent state:SyncConnected type:NodeDataChanged path:/app1

11）節點的子節點變化監聽（路徑變化）

（1）在104主機上注冊監聽/app1節點的子節點變化

[zk: localhost:2181(CONNECTED) 1] ls /app1 watch

[aa0000000001, server101]

（2）在103主機/app1節點上創建子節點

[zk: localhost:2181(CONNECTED) 6] create /app1/bb 666

Created /app1/bb

（3）觀察104主機收到子節點變化的監聽

WATCHER::

WatchedEvent state:SyncConnected type:NodeChildrenChanged path:/app1

12）刪除節點

[zk: localhost:2181(CONNECTED) 4] delete /app1/bb

13）遞歸刪除節點

[zk: localhost:2181(CONNECTED) 7] rmr /app2

14）查看節點狀態

[zk: localhost:2181(CONNECTED) 12] stat /app1

cZxid = 0x20000000a

ctime = Mon Jul 17 16:08:35 CST 2017

mZxid = 0x200000018

mtime = Mon Jul 17 16:54:38 CST 2017

pZxid = 0x20000001c

cversion = 4

dataVersion = 2

aclVersion = 0

ephemeralOwner = 0x0

dataLength = 3

numChildren = 2