四字命令

conf

New in 3.3.0

Print details about serving configuration.

输出服务配置的详细信息。

cons

New in 3.3.0

List full connection/session details for all clients connected to this server. Includes information on numbers of packets received/sent, session id, operation latencies, last operation performed, etc…

列出所有连接到服务器的客户端的连接/会话的详细信息。包括接收/发送包数量、会话id、操作延迟、最后进行的操作等…

crst

New in 3.3.0

Reset connection/session statistics for all connections.

重置所有连接的连接/会话统计信息。

dump

Lists the outstanding sessions and ephemeral nodes. This only works on the leader.

列出未经处理的会话和临时节点。此命令仅对leader有效。

envi

Print details about serving environment.

输出服务环境的详细信息。

ruok

Tests if server is running in a non-error state. The server will respond with imok if it is running. Otherwise it will not respond at all.

测试服务是否处于正确状态。如果确实如此，那么服务返回“ imok ”，否则不做任何相应

A response of “imok” does not necessarily indicate that the server has joined the quorum, just that the server process is active and bound to the specified client port. Use “stat” for details on state wrt quorum and client connection information.

srst

Reset server statistics.

重置服务器统计信息。

srvr

New in 3.3.0

Lists full details for the server.

列出所有的服务器详细信息。

stat

Lists brief details for the server and connected clients.

输出服务器信息和连接客户端的概要列表。

wchs

New in 3.3.0

Lists brief information on watches for the server.

列出服务器观察者的概要信息。

wchc

New in 3.3.0

Lists detailed information on watches for the server, by session. This outputs a list of sessions(connections) with associated watches (paths). Note, depending on the number of watches this operation may be expensive (ie impact server performance), use it carefully.

通过session列出服务器观察者的详细信息，它的输出是一个与观察者(路径)相关的会话(连接)的列表。注意，取决于观察者的数量，此操作可能会非常消耗资源（影响服务器性能），请小心使用，

wchp

New in 3.3.0

Lists detailed information on watches for the server, by path. This outputs a list of paths (znodes) with associated sessions. Note, depending on the number of watches this operation may be expensive (ie impact server performance), use it carefully.

通过路径列出服务器观察者的详细信息。它输出一个与 session相关的路径(节点)。注意，取决于观察者的数量，此操作可能会非常消耗资源（影响服务器性能），请小心使用，

mntr

New in 3.4.0

Outputs a list of variables that could be used for monitoring the health of the cluster.

输出一份可以监控集群健康状态的变量列表。

四字命令使用方法

[root@localhost bin]# echo stat | nc localhost 2181 Zookeeper version: 3.4.9-1757313, built on 08/23/2016 06:50 GMT Clients: /0:0:0:0:0:0:0:1:57843[0](queued=0,recved=1,sent=0) Latency min/avg/max: 0/0/0 Received: 2 Sent: 1 Connections: 1 Outstanding: 0 Zxid: 0x400000001 Mode: follower Node count: 5

zkClient使用命令

客户端连接

[root@databus bin]# ./zkCli.sh -server localhost:2181

ls

列出某路径下所有节点

ls path [watch]

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

create

创建节点

create [-s] [-e] path data acl

# -s 代表自动编号 # -e 代表临时节点，当创建这个znode的Client与Server断开连接，此节点自动删除 [zk: localhost:2181(CONNECTED) 1] create /freud hifreud Created /freud

get

获取节点信息

get path [watch]

[zk: localhost:2181(CONNECTED) 2] get /freud hifreud cZxid = 0x40000000f ctime = Fri Jan 06 15:00:42 CST 2017 mZxid = 0x40000000f mtime = Fri Jan 06 15:00:42 CST 2017 pZxid = 0x40000000f cversion = 0 dataVersion = 0 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 7 numChildren = 0

set

为节点重新赋值

set path data [version]

[zk: localhost:2181(CONNECTED) 3] set /freud 'hi again freud' cZxid = 0x40000000f ctime = Fri Jan 06 15:00:42 CST 2017 mZxid = 0x400000011 mtime = Fri Jan 06 15:01:05 CST 2017 pZxid = 0x40000000f cversion = 0 dataVersion = 1 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 14 numChildren = 0

delete

删除节点

delete path [version]

[zk: localhost:2181(CONNECTED) 9] delete /freud

history

查看执行命令历史记录

history

[zk: localhost:2181(CONNECTED) 10] history 0 - ls / 1 - create /freud hifreud 2 - get /freud 3 - set /freud 'hi again freud' 4 - delete /freud 5 - history

redo

重做某一步

redo cmdno

[zk: localhost:2181(CONNECTED) 14] redo 1 Created /freud

stat

打印节点状态

stat path [watch]

[zk: localhost:2181(CONNECTED) 15] stat /freud cZxid = 0x400000013 ctime = Fri Jan 06 15:03:12 CST 2017 mZxid = 0x400000013 mtime = Fri Jan 06 15:03:12 CST 2017 pZxid = 0x400000013 cversion = 0 dataVersion = 0 aclVersion = 0 ephemeralOwner = 0x0 dataLength = 7 numChildren = 0

close

关闭当前连接

close

connect

当close当前连接或者以外退出后，可以继续在zkCli的命令模式下连接。

connect host:port

connect localhost:2181

quit

退出当前会话

quit

setAcl path acl

为某个节点设置ACL权限。

setAcl path acl

[zk: localhost:2181(CONNECTED) 1] setAcl /hifreud world:anyone:cdwra cZxid = 0x5 ctime = Thu Jun 08 09:56:28 CST 2017 mZxid = 0x5 mtime = Thu Jun 08 09:56:28 CST 2017 pZxid = 0x5 cversion = 0 dataVersion = 0 aclVersion = 1 ephemeralOwner = 0x0 dataLength = 7 numChildren = 0

getAcl path

查看某个节点的ACL权限。

getAcl path

[zk: localhost:2181(CONNECTED) 2] getAcl /hifreud 'world,'anyone : cdrwa

addauth scheme auth

添加认证信息，类似于登录。如果某个节点需要认证后才能查看，则需要此命令。

addauth scheme auth

addauth digest admin:admin

不常用

• rmr path
• ls2 path [watch]
• listquota path
• sync path

• delquota [-n|-b] path

• printwatches on|off

• setquota -n|-b val path

参考资料

百度百科：zookeeper

Zookeeper官网：http://zookeeper.apache.org/

《从PAXOS到ZOOKEEPER分布式一致性原理与实践》 – 倪超

ZooKeeper Commands: The Four Letter Words http://zookeeper.apache.org/doc/r3.4.9/zookeeperAdmin.html#sc_zkCommands