Zookeeper 基本操作
1 查看zk的运行状态
bin/zkServer.sh status
2 客户端连接zk
bin/zkCli.sh
3 ls 查看
ls /
4 get 获取节点数据和更新信息
get内容为空
cZxid ：创建节点的id
ctime ： 节点的创建时间
mZxid ：修改节点的id
mtime ：修改节点的时间
pZxid ：子节点的id
cversion : 子节点的版本
dataVersion ： 当前节点数据的版本
aclVersion ：权限的版本
ephemeralOwner ：判断是否是临时节点
dataLength ： 数据的长度
numChildren ：子节点的数量
5 stat 获得节点的更新信息
stat /brokers
cZxid = 0x100000004
ctime = Fri Apr 21 18:45:06 CST 2017
mZxid = 0x100000004
mtime = Fri Apr 21 18:45:06 CST 2017
pZxid = 0x10000000f
cversion = 3
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 3
6 ls2 ls命令和stat命令的整合
ls2 /brokers
[ids, topics, seqid]
cZxid = 0x100000004
ctime = Fri Apr 21 18:45:06 CST 2017
mZxid = 0x100000004
mtime = Fri Apr 21 18:45:06 CST 2017
pZxid = 0x10000000f
cversion = 3
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 3
7 create 创建节点
create /xiaoku ddddd
#创建/xiaoku节点，节点的内容为ddddd
8 create -e 创建临时节点
9 create -s 创建顺序节点 自动累加
create -s /xiaoku/ffff seq
Created /xiaoku/ffff0000000000
create -s /xiaoku/ffff seq
Created /xiaoku/ffff0000000001
10 set path data [version] 修改节点
[zk: localhost:2181(CONNECTED) 6] get /merryyou
merryyou
cZxid = 0x200000004
ctime = Sat Jun 02 14:20:06 UTC 2018
mZxid = 0x200000004
mtime = Sat Jun 02 14:20:06 UTC 2018
pZxid = 0x200000009
cversion = 4
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 8
numChildren = 2
# 修改节点内容为new-merryyou
[zk: localhost:2181(CONNECTED) 7] set /merryyou new-merryyou
cZxid = 0x200000004
ctime = Sat Jun 02 14:20:06 UTC 2018
mZxid = 0x20000000a
mtime = Sat Jun 02 14:29:23 UTC 2018
pZxid = 0x200000009
cversion = 4
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 12
numChildren = 2
#再次查询，节点内容已经修改
[zk: localhost:2181(CONNECTED) 8] get /merryyou
new-merryyou
cZxid = 0x200000004
ctime = Sat Jun 02 14:20:06 UTC 2018
mZxid = 0x20000000a
mtime = Sat Jun 02 14:29:23 UTC 2018
pZxid = 0x200000009
cversion = 4
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 12
numChildren = 2
#set 根据版本号更新 dataVersion 乐观锁
[zk: localhost:2181(CONNECTED) 9] set /merryyou test-merryyou 1
cZxid = 0x200000004
ctime = Sat Jun 02 14:20:06 UTC 2018
mZxid = 0x20000000b
mtime = Sat Jun 02 14:31:30 UTC 2018
pZxid = 0x200000009
cversion = 4
dataVersion = 2
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 13
numChildren = 2
#因为数据的版本号已经修改为2 再次使用版本号1修改节点提交错误
[zk: localhost:2181(CONNECTED) 10] set /merryyou test-merryyou 1
version No is not valid : /merryyou
11 delete path [version] 删除节点
[zk: localhost:2181(CONNECTED) 13] delete /merryyou/sec000000000
sec0000000001 sec0000000002
[zk: localhost:2181(CONNECTED) 13] delete /merryyou/sec0000000001
[zk: localhost:2181(CONNECTED) 14] ls /merryyou
[sec0000000002]
[zk: localhost:2181(CONNECTED) 15]
#版本号操作与set类似 version
