The ZooKeeper client provides a list of commands that allow you to access and manipulate zNodes in ZooKeeper.

You can run the command line and specify one or multiple ZooKeeper instances:

${ZK_ROOT}/bin/zkCli.sh

${ZK_ROOT}/bin/zkCli.sh -server localhost:2181

${ZK_ROOT}/bin/zkCli.sh -server "localhost:2181,localhost:2182,localhost:2183"

You can execute directly a command as follows:

${ZK_ROOT}/bin/zkCli.sh -server localhost:2181 COMMAND ARGUMENTS

history

connect host:port
close

quit

config [-c] [-w] [-s]
reconfig [-s] [-v version] [[-file path] | [-members serverID=host:port1:port2;port3[,...]*]] | [-add serverId=host:port1:port2;port3[,...]]* [-remove serverId[,...]*]

ls [-s] [-w] [-R] path
stat [-w] path

get [-s] [-w] path
getAcl [-s] path

set [-s] [-v version] path data
setAcl [-s] [-v version] path acl

create [-s] [-e] [-c] [-t ttl] path [data] [acl]

delete [-v version] path
deleteall path

addauth scheme auth

listquota path
setquota -n|-b val path
delquota [-n|-b] path

printwatches on|off
removewatches path [-c|-d|-a] [-l]

redo cmdno

sync path

Notes:
▸ The command 'ls2' has been deprecated. Please use 'ls [-s] path' instead.

ls2 path [watch]

▸ The command 'rmr' has been deprecated. Please use 'deleteall' instead.

rmr path

[zk: localhost:2181(CONNECTED) 2] history
0 - ls /
1 - get /abc
2 - history

[zk: localhost:2181(CONNECTED) 4] close
2016-07-10 19:24:49,241 [myid:] - INFO  [main:ZooKeeper@1110] - Session: 0x100002d7e410003 closed

[zk: localhost:2181(CLOSED) 5] connect
2016-07-10 19:25:00,934 [myid:] - INFO  [main:ZooKeeper@716] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000

[zk: localhost:2181(CLOSED) 5] connect localhost:2181
2016-07-10 19:25:00,934 [myid:] - INFO  [main:ZooKeeper@716] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000

[zk: localhost:2181(CLOSED) 5] connect "localhost:2181,localhost:2182,localhost:2183"
2016-07-10 19:25:00,934 [myid:] - INFO  [main:ZooKeeper@716] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000

[zk: localhost:2181(CONNECTED) 6] quit
2016-07-10 19:28:40,215 [myid:] - INFO  [main:ZooKeeper@1110] - Session: 0x100002d7e410004 closed

Create zNode:

[zk: localhost:2181,localhost:2182,localhost:2183(CONNECTED) 0] create /znode1
Created /znode1

Create zNode with data:

[zk: localhost:2181,localhost:2182,localhost:2183(CONNECTED) 1] create /znode2 znode2_data
Created /znode2

[zk: localhost:2181,localhost:2182,localhost:2183(CONNECTED) 1] set /znode1 znode1_data

[zk: localhost:2181,localhost:2182,localhost:2183(CONNECTED) 0] get /znode1
znode1_data

[zk: localhost:2181(CONNECTED) 0] config
server.1=localhost:2888:3888:participant;0.0.0.0:2181
server.2=localhost:2889:3889:participant;0.0.0.0:2182
version=500000005

Notes:
▸ You have to enable the option "reconfigEnabled" to true in the configuration file ("zoo.cfg").
▸ You have to authenticate with an authorized user to execute the "reconfig" command (see this page zk-super-user.php for instructions on how to create an authorized user).

[zk: localhost:2181(CONNECTED) 1] reconfig -add server.3=localhost:2890:3890:participant;0.0.0.0:2183
Committed new configuration:
server.1=localhost:2888:3888:participant;0.0.0.0:2181
server.2=localhost:2889:3889:participant;0.0.0.0:2182
server.3=localhost:2890:3890:participant;0.0.0.0:2183
version=600000003

Notes:
▸ You have to enable the option "reconfigEnabled" to true in the configuration file ("zoo.cfg").
▸ You have to authenticate with an authorized user to execute the "reconfig" command (see this page zk-super-user.php for instructions on how to create an authorized user).

[zk: localhost:2181(CONNECTED) 2] reconfig -remove 3
Committed new configuration:
server.1=localhost:2888:3888:participant;0.0.0.0:2181
server.2=localhost:2889:3889:participant;0.0.0.0:2182
version=600000004