ZooKeeper客户端命令行操作
- 启动服务端
[[email protected] zookeeper-3.4.10]$ bin/zkServer.sh start - 查看状态信息
Using config: /opt/module/zookeeper-3.4.10/bin/../conf/zoo.cfg Starting zookeeper ... STARTED [[email protected] zookeeper-3.4.10]$ bin/zkServer.sh status ZooKeeper JMX enabled by default Using config: /opt/module/zookeeper-3.4.10/bin/../conf/zoo.cfg Mode: follower - 启动客户端
[[email protected] zookeeper-3.4.10]$ bin/zkCli.sh - 查看当前znode中所包含的内容
[zk: localhost:2181(CONNECTED) 1] ls / [zookeeper] - 查看当前节点的详细数据
[zk: localhost:2181(CONNECTED) 2] 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 - 分别创建两个普通节点
[zk: localhost:2181(CONNECTED) 3] create /simon "user" [zk: localhost:2181(CONNECTED) 0] create /simon/a "a" Created /simon/a - 获得节点的值
[zk: localhost:2181(CONNECTED) 1] get /simon user cZxid = 0x100000004 ctime = Thu Oct 24 21:59:31 CST 2019 mZxid = 0x100000004 mtime = Thu Oct 24 21:59:31 CST 2019 pZxid = 0x100000007 cversion = 1 dataVersion = 0 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 4 numChildren = 1 [zk: localhost:2181(CONNECTED) 2] get /simon/a a cZxid = 0x100000007 ctime = Thu Oct 24 22:19:10 CST 2019 mZxid = 0x100000007 mtime = Thu Oct 24 22:19:10 CST 2019 pZxid = 0x100000007 cversion = 0 dataVersion = 0 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 1 numChildren = 0 - 创建临时节点
[zk: localhost:2181(CONNECTED) 3] create -e /simon/temp "temp" Created /simon/temp（1）在客户端可以查看到
[zk: localhost:2181(CONNECTED) 5] ls /simon [a, temp]（2）退出当前客户端之后再重启客户端
[zk: localhost:2181(CONNECTED) 6] quit Quitting... 2019-10-24 22:22:00,789 [myid:] - INFO [main:[email protected]] - Session: 0x26dfe0bc0f60002 closed 2019-10-24 22:22:00,790 [myid:] - INFO [main-EventThread:[email protected]] - EventThread shut down for session: 0x26dfe0bc0f60002 [[email protected] zookeeper-3.4.10]$ bin/zkCli.sh（3）再次查看根目录下临时节点已经被删除
[zk: localhost:2181(CONNECTED) 0] ls /simon [a] - 创建带序号的节点
（1）先创建一个普通的根节点
/simon/b[zk: localhost:2181(CONNECTED) 1] create /simon/b "b" Created /simon/b（2）创建一个带序号的节点
[zk: localhost:2181(CONNECTED) 1] create -s /simon/b/ba "ba" Created /simon/b/ba0000000001 [zk: localhost:2181(CONNECTED) 2] create -s /simon/b/bb "bb" Created /simon/b/bb0000000002 [zk: localhost:2181(CONNECTED) 3] create -s /simon/b/bc "bc" Created /simon/b/bc0000000003如果原来没有节点序号，序号从0开始依次递增。如果原节点下已经有2个节点，则再排序时从2开始，以此类推。
- 修改节点数据的值
[zk: localhost:2181(CONNECTED) 4] set /simon/b "B" [zk: localhost:2181(CONNECTED) 5] get /simon/b [zk: localhost:2181(CONNECTED) 5] get /simon/b B cZxid = 0x10000000b ctime = Thu Oct 24 22:23:07 CST 2019 mZxid = 0x100000012 mtime = Thu Oct 24 22:26:16 CST 2019 pZxid = 0x100000011 cversion = 4 dataVersion = 1 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 1 numChildren = 4 - 节点值的变化监听
（1）在Hadoop104主机上注册监听
/simon节点数据的变化[zk: localhost:2181(CONNECTED) 0] get /simon watch #监听根节点用:get 子节点：ls user cZxid = 0x100000004 ctime = Thu Oct 24 21:59:31 CST 2019 mZxid = 0x100000004 mtime = Thu Oct 24 21:59:31 CST 2019 pZxid = 0x10000000b cversion = 4 dataVersion = 0 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 4 numChildren = 2（2）在Hadoop103主机上修改
/simon节点的数据[zk: localhost:2181(CONNECTED) 0] set /simon "hello world" cZxid = 0x100000004 ctime = Thu Oct 24 21:59:31 CST 2019 mZxid = 0x100000015 mtime = Thu Oct 24 22:29:32 CST 2019 pZxid = 0x10000000b cversion = 4 dataVersion = 1 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 11 numChildren = 2（3）在Hadoop104节点上观察数据的变化的监听
[zk: localhost:2181(CONNECTED) 1] WATCHER:: WatchedEvent state:SyncConnected type:NodeDataChanged path:/simon - 节点的子节点变化监听(路劲变化)
（1）在Hadoop104主机上注册监听
/simon节点的子节点变化[zk: localhost:2181(CONNECTED) 0] ls /simon watch [a, b]（2）在Hadoop103主机
/simon节点创建子节点[zk: localhost:2181(CONNECTED) 4] create /simon/c "c" Created /simon/c（3）观察Hadoop104主机收到的子节点变化的监听
[zk: localhost:2181(CONNECTED) 4] ls /simon watch WATCHER:: WatchedEvent state:SyncConnected type:NodeChildrenChanged path:/simon - 删除节点
[zk: localhost:2181(CONNECTED) 6] delete /simon/b/bd - 递归删除节点
[zk: localhost:2181(CONNECTED) 7] rmr /simon/b - 查看节点的状态
[zk: localhost:2181(CONNECTED) 8] stat /simon cZxid = 0x100000004 ctime = Thu Oct 24 21:59:31 CST 2019 mZxid = 0x100000015 mtime = Thu Oct 24 22:29:32 CST 2019 pZxid = 0x100000021 cversion = 6 dataVersion = 1 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 11 numChildren = 2
原文地址：https://www.cnblogs.com/simon-1024/p/11741465.html
时间： 2024-10-03 04:59:58