本文依据ZooKeeper-cli: the ZooKeeper command line interface对一些常见的zookeeper cli命令做一些笔记.
登录
咱们能够应用zkCli命令来登录上zookeeper.
# 本地登录,默认为localhost:2181[thinktik@ThinkOnline bin]$ ./zkCli.sh# 指定host和port,咱们能够应用这个命令加上-server参数来进行近程登录[thinktik@ThinkOnline bin]$ ./zkCli.sh -server localhost:2181查看文档
咱们能够应用zookeeper时通过help来查看文档
[zk: localhost:2181(CONNECTED) 0] helpZooKeeper -server host:port -client-configuration properties-file cmd args addWatch [-m mode] path # optional mode is one of [PERSISTENT, PERSISTENT_RECURSIVE] - default is PERSISTENT_RECURSIVE addauth scheme auth close config [-c] [-w] [-s] connect host:port create [-s] [-e] [-c] [-t ttl] path [data] [acl] delete [-v version] path deleteall path [-b batch size] delquota [-n|-b] path get [-s] [-w] path getAcl [-s] path getAllChildrenNumber path getEphemerals path history listquota path ls [-s] [-w] [-R] path printwatches on|off quit reconfig [-s] [-v version] [[-file path] | [-members serverID=host:port1:port2;port3[,...]*]] | [-add serverId=host:port1:port2;port3[,...]]* [-remove serverId[,...]*] redo cmdno removewatches path [-c|-d|-a] [-l] set [-s] [-v version] path data setAcl [-s] [-v version] [-R] path acl setquota -n|-b val path stat [-w] path sync path version Command not found: Command not found help创立节点
咱们能够应用create [-s] [-e] [-c] [-t ttl] path [data] [acl]来创立节点，默认节点类型为persistent节点
创立persistent节点
应用create创立的节点默认为persistent节点
[zk: localhost:2181(CONNECTED) 9] ls /[zookeeper][zk: localhost:2181(CONNECTED) 10] create /persistent_node_testCreated /persistent_node_test[zk: localhost:2181(CONNECTED) 11] create /persistent_node_test/p_data thinktikCreated /persistent_node_test/p_date[zk: localhost:2181(CONNECTED) 12] get /persistent_node_testnull[zk: localhost:2181(CONNECTED) 14] get /persistent_node_test/p_datathinktik创立ephemeral节点
咱们能够在创立节点的时候加上-e参数来创立长期节点，长期节点的特点是如果以后的连贯被断开，那么这个节点会主动的被删除.
[zk: localhost:2181(CONNECTED) 24] create -e /ephemeral_node_test thinktikCreated /ephemeral_node_test[zk: localhost:2181(CONNECTED) 25] ls /[ephemeral_node_test, zookeeper][zk: localhost:2181(CONNECTED) 27] get /ephemeral_node_testthinktik创立sequential节点
对于后面的2种节点，咱们也能够加上-s来创立sequential节点,sequential节点会主动的为你加上一个枯燥递增的序列号
# 创立persistent并且为sequential的节点[zk: localhost:2181(CONNECTED) 6] create -s /s- thinktikCreated /s-0000000008[zk: localhost:2181(CONNECTED) 7] get /s-0000000008thinktik# 创立ephemeral并且为sequential的节点[zk: localhost:2181(CONNECTED) 8] create -e -s /s- thinktikCreated /s-0000000009[zk: localhost:2181(CONNECTED) 10] get /s-0000000009thinktik[zk: localhost:2181(CONNECTED) 9] ls /[s-0000000008, s-0000000009, zookeeper]创立container节点
container节点是zookeeper 3.5.3开始提供的新的节点类型，它的次要特点就是如果Container节点上面没有子节点，则Container节点 在将来会被Zookeeper主动革除,定时工作默认60s 查看一次
The time interval in milliseconds for each check of candidate container and ttl nodes. Default is "60000"
咱们应用-c参数即可
# 创立容器节点[zk: localhost:2181(CONNECTED) 19] create -c /container thinktik_c0Created /container# 创立容器节点中的子节点[zk: localhost:2181(CONNECTED) 20] create /container/sub1 thinktik_c1Created /container/sub1[zk: localhost:2181(CONNECTED) 21] ls /[container, zookeeper][zk: localhost:2181(CONNECTED) 22] ls /container[sub1]# 删除容器节点中的子节点[zk: localhost:2181(CONNECTED) 23] delete /container/sub1# 此时容器节点曾经空了，期待大概60s，如果该节点中还是没有子节点，那么会被主动删除[zk: localhost:2181(CONNECTED) 27] ls /container[]# 曾经被主动删除了[zk: localhost:2181(CONNECTED) 30] ls /[zookeeper]创立TTL节点
TTL节点就是有生命周期的节点，你在创立的时候指定过期工夫，那么它会在你规定的工夫后主动的被删除.
# 如果你不开启-Dzookeeper.extendedTypesEnabled=true的话,TTL节点是无奈创立.[zk: localhost:2181(CONNECTED) 1] create -t 60 /ttl_test thinktikKeeperErrorCode = Unimplemented for /ttl_test# 开启后就能够了[zk: localhost:2181(CONNECTED) 0] create -t 60000 /ttl_node thinktikCreated /ttl_node咱们能够这样增加启动参数
# 批改启动脚本，增加-Dzookeeper.extendedTypesEnabled=true[thinktik@ThinkOnline bin]$ vim ./zkServer.sh删除节点
咱们能够应用delete来删除节点
# 应用delete能够删除节点，然而它只能间接删除某个节点，如果该节点下有子节点时不能递归删除[zk: localhost:2181(CONNECTED) 22] delete /persistent_node_testNode not empty: /persistent_node_test# 咱们能够应用deleteall来进行递归删除[zk: localhost:2181(CONNECTED) 23] deleteall /persistent_node_test更新节点的值
咱们能够应用set命令来更新节点的值
[zk: localhost:2181(CONNECTED) 0] ls /[zookeeper][zk: localhost:2181(CONNECTED) 1] create /p1 thinktikCreated /p1[zk: localhost:2181(CONNECTED) 2] get /p1thinktik# 更新/p1节点的值[zk: localhost:2181(CONNECTED) 3] set /p1 think[zk: localhost:2181(CONNECTED) 4] get /p1think查看节点状态
咱们能够查看节点状态
[zk: localhost:2181(CONNECTED) 6] stat /p1cZxid = 0x3actime = Mon Feb 15 21:50:10 CST 2021mZxid = 0x3bmtime = Mon Feb 15 21:50:20 CST 2021pZxid = 0x3acversion = 0dataVersion = 1aclVersion = 0ephemeralOwner = 0x0dataLength = 5numChildren = 0查看节点
[zk: localhost:2181(CONNECTED) 13] ls /[p1, zookeeper]# 咱们能够增加-R来递归查看子节点[zk: localhost:2181(CONNECTED) 12] ls -R /p1/p1/p1/sp1查看版本
咱们能够这样查看zookeeper version
[zk: localhost:2181(CONNECTED) 7] versionZooKeeper CLI version: 3.6.2--803c7f1a12f85978cb049af5e4ef23bd8b688715, built on 09/04/2020 12:44 GMT监听节点
咱们能够在获取节点的时候增加-w来监听节点变动
咱们须要开启2个窗口在获取节点值的时候增加-w来设置一个watch
A窗口获取值并增加监听器:
[zk: localhost:2181(CONNECTED) 2] get -w /p1 think[zk: localhost:2181(CONNECTED) 3] WATCHER::WatchedEvent state:SyncConnected type:NodeDataChanged path:/p1B窗口更改值:
[zk: localhost:2181(CONNECTED) 15] set /p1 thinktik查看历史记录
[zk: localhost:2181(CONNECTED) 16] history6 - stat /p17 - version8 - ls /9 - create /p1/sp110 - ls /11 - ls -R /12 - ls -R /p113 - ls /14 - ls /15 - set /p1 thinktik16 - history本文原创链接: zookeeper cli