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onclick="SwitchMenu('menu_5', 'skin/')" id="menu_5Title" class="menutitle">Miscellaneous</div> + <div id="menu_5" class="menuitemgroup"> + <div class="menuitem"> + <a href="https://cwiki.apache.org/confluence/display/ZOOKEEPER">Wiki</a> + </div> + <div class="menuitem"> + <a href="https://cwiki.apache.org/confluence/display/ZOOKEEPER/FAQ">FAQ</a> + </div> + <div class="menuitem"> + <a href="http://zookeeper.apache.org/mailing_lists.html">Mailing Lists</a> + </div> + </div> + </div> + <div id="content"> +<!-- +Copyright 2002-2021 The Apache Software Foundation + +Licensed under the Apache License, Version 2.0 (the "License"); +you may not use this file except in compliance with the License. +You may obtain a copy of the License at + +http://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +//--> +<h1>ZooKeeper-cli: the ZooKeeper command line interface</h1> +<h2>Pre-requisites</h2> +<p>Enter into the ZooKeeper-cli</p> +<pre><code class="language-bash"># connect to the localhost with the default port:2181 +bin/zkCli.sh +# connect to the remote host with timeout:3s +bin/zkCli.sh -timeout 3000 -server remoteIP:2181 +# connect to the remote host with -waitforconnection option to wait for connection success before executing commands +bin/zkCli.sh -waitforconnection -timeout 3000 -server remoteIP:2181 +# connect with a custom client configuration properties file +bin/zkCli.sh -client-configuration /path/to/client.properties +</code></pre> +<h2>help</h2> +<p>Showing helps about ZooKeeper commands</p> +<pre><code class="language-bash">[zkshell: 1] help +# a sample one +[zkshell: 2] h +ZooKeeper -server host:port cmd args + 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 + delquota [-n|-b|-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|-N|-B val path + stat [-w] path + sync path + version +</code></pre> +<h2>addauth</h2> +<p>Add a authorized user for ACL</p> +<pre><code class="language-bash">[zkshell: 9] getAcl /acl_digest_test + Insufficient permission : /acl_digest_test +[zkshell: 10] addauth digest user1:12345 +[zkshell: 11] getAcl /acl_digest_test + 'digest,'user1:+owfoSBn/am19roBPzR1/MfCblE= + : cdrwa +# add a super user +# Notice:set zookeeper.DigestAuthenticationProvider +# e.g. zookeeper.DigestAuthenticationProvider.superDigest=zookeeper:qW/HnTfCSoQpB5G8LgkwT3IbiFc= +[zkshell: 12] addauth digest zookeeper:admin +</code></pre> +<h2>close</h2> +<p>Close this client/session.</p> +<pre><code class="language-bash">[zkshell: 0] close + 2019-03-09 06:42:22,178 [myid:] - INFO [main-EventThread:ClientCnxn$EventThread@528] - EventThread shut down for session: 0x10007ab7c550006 + 2019-03-09 06:42:22,179 [myid:] - INFO [main:ZooKeeper@1346] - Session: 0x10007ab7c550006 closed +</code></pre> +<h2>config</h2> +<p>Showing the config of quorum membership</p> +<pre><code class="language-bash">[zkshell: 17] config + server.1=[2001:db8:1:0:0:242:ac11:2]:2888:3888:participant + server.2=[2001:db8:1:0:0:242:ac11:2]:12888:13888:participant + server.3=[2001:db8:1:0:0:242:ac11:2]:22888:23888:participant + version=0 +</code></pre> +<h2>connect</h2> +<p>Connect a ZooKeeper server.</p> +<pre><code class="language-bash">[zkshell: 4] connect + 2019-03-09 06:43:33,179 [myid:localhost:2181] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@986] - Socket connection established, initiating session, client: /127.0.0.1:35144, server: localhost/127.0.0.1:2181 + 2019-03-09 06:43:33,189 [myid:localhost:2181] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1421] - Session establishment complete on server localhost/127.0.0.1:2181, sessionid = 0x10007ab7c550007, negotiated timeout = 30000 + connect "localhost:2181,localhost:2182,localhost:2183" + +# connect a remote server +[zkshell: 5] connect remoteIP:2181 +</code></pre> +<h2>create</h2> +<p>Create a znode.</p> +<pre><code class="language-bash"># create a persistent_node +[zkshell: 7] create /persistent_node + Created /persistent_node + +# create a ephemeral node +[zkshell: 8] create -e /ephemeral_node mydata + Created /ephemeral_node + +# create the persistent-sequential node +[zkshell: 9] create -s /persistent_sequential_node mydata + Created /persistent_sequential_node0000000176 + +# create the ephemeral-sequential_node +[zkshell: 10] create -s -e /ephemeral_sequential_node mydata + Created /ephemeral_sequential_node0000000174 + +# create a node with the schema +[zkshell: 11] create /zk-node-create-schema mydata digest:user1:+owfoSBn/am19roBPzR1/MfCblE=:crwad + Created /zk-node-create-schema +[zkshell: 12] addauth digest user1:12345 +[zkshell: 13] getAcl /zk-node-create-schema + 'digest,'user1:+owfoSBn/am19roBPzR1/MfCblE= + : cdrwa + +# create the container node.When the last child of a container is deleted,the container becomes to be deleted +[zkshell: 14] create -c /container_node mydata + Created /container_node +[zkshell: 15] create -c /container_node/child_1 mydata + Created /container_node/child_1 +[zkshell: 16] create -c /container_node/child_2 mydata + Created /container_node/child_2 +[zkshell: 17] delete /container_node/child_1 +[zkshell: 18] delete /container_node/child_2 +[zkshell: 19] get /container_node + org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /container_node + +# create the ttl node. +# set zookeeper.extendedTypesEnabled=true +# Otherwise:KeeperErrorCode = Unimplemented for /ttl_node +[zkshell: 20] create -t 3000 /ttl_node mydata + Created /ttl_node +# after 3s later +[zkshell: 21] get /ttl_node + org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /ttl_node +</code></pre> +<h2>delete</h2> +<p>Delete a node with a specific path</p> +<pre><code class="language-bash">[zkshell: 2] delete /config/topics/test +[zkshell: 3] ls /config/topics/test + Node does not exist: /config/topics/test +</code></pre> +<h2>deleteall</h2> +<p>Delete all nodes under a specific path</p> +<pre><code class="language-bash">zkshell: 1] ls /config + [changes, clients, topics] +[zkshell: 2] deleteall /config +[zkshell: 3] ls /config + Node does not exist: /config +</code></pre> +<h2>delquota</h2> +<p>Delete the quota under a path</p> +<pre><code class="language-bash">[zkshell: 1] delquota /quota_test +[zkshell: 2] listquota /quota_test + absolute path is /zookeeper/quota/quota_test/zookeeper_limits + quota for /quota_test does not exist. +[zkshell: 3] delquota -n /c1 +[zkshell: 4] delquota -N /c2 +[zkshell: 5] delquota -b /c3 +[zkshell: 6] delquota -B /c4 + +</code></pre> +<h2>get</h2> +<p>Get the data of the specific path</p> +<pre><code class="language-bash">[zkshell: 10] get /latest_producer_id_block + {"version":1,"broker":0,"block_start":"0","block_end":"999"} + +# -s to show the stat +[zkshell: 11] get -s /latest_producer_id_block + {"version":1,"broker":0,"block_start":"0","block_end":"999"} + cZxid = 0x90000009a + ctime = Sat Jul 28 08:14:09 UTC 2018 + mZxid = 0x9000000a2 + mtime = Sat Jul 28 08:14:12 UTC 2018 + pZxid = 0x90000009a + cversion = 0 + dataVersion = 1 + aclVersion = 0 + ephemeralOwner = 0x0 + dataLength = 60 + numChildren = 0 + +# -w to set a watch on the data change, Notice: turn on the printwatches +[zkshell: 12] get -w /latest_producer_id_block + {"version":1,"broker":0,"block_start":"0","block_end":"999"} +[zkshell: 13] set /latest_producer_id_block mydata + WATCHER:: + WatchedEvent state:SyncConnected type:NodeDataChanged path:/latest_producer_id_block +</code></pre> +<h2>getAcl</h2> +<p>Get the ACL permission of one path</p> +<pre><code class="language-bash">[zkshell: 4] create /acl_test mydata ip:127.0.0.1:crwda + Created /acl_test +[zkshell: 5] getAcl /acl_test + 'ip,'127.0.0.1 + : cdrwa + [zkshell: 6] getAcl /testwatch + 'world,'anyone + : cdrwa +</code></pre> +<h2>getAllChildrenNumber</h2> +<p>Get all numbers of children nodes under a specific path</p> +<pre><code class="language-bash">[zkshell: 1] getAllChildrenNumber / + 73779 +[zkshell: 2] getAllChildrenNumber /ZooKeeper + 2 +[zkshell: 3] getAllChildrenNumber /ZooKeeper/quota + 0 +</code></pre> +<h2>getEphemerals</h2> +<p>Get all the ephemeral nodes created by this session</p> +<pre><code class="language-bash">[zkshell: 1] create -e /test-get-ephemerals "ephemeral node" + Created /test-get-ephemerals +[zkshell: 2] getEphemerals + [/test-get-ephemerals] +[zkshell: 3] getEphemerals / + [/test-get-ephemerals] +[zkshell: 4] create -e /test-get-ephemerals-1 "ephemeral node" + Created /test-get-ephemerals-1 +[zkshell: 5] getEphemerals /test-get-ephemerals + test-get-ephemerals test-get-ephemerals-1 +[zkshell: 6] getEphemerals /test-get-ephemerals + [/test-get-ephemerals-1, /test-get-ephemerals] +[zkshell: 7] getEphemerals /test-get-ephemerals-1 + [/test-get-ephemerals-1] +</code></pre> +<h2>history</h2> +<p>Showing the history about the recent 11 commands that you have executed</p> +<pre><code class="language-bash">[zkshell: 7] history + 0 - close + 1 - close + 2 - ls / + 3 - ls / + 4 - connect + 5 - ls / + 6 - ll + 7 - history +</code></pre> +<h2>listquota</h2> +<p>Listing the quota of one path</p> +<pre><code class="language-bash">[zkshell: 1] listquota /c1 + absolute path is /zookeeper/quota/c1/zookeeper_limits + Output quota for /c1 count=-1,bytes=-1=;byteHardLimit=-1;countHardLimit=2 + Output stat for /c1 count=4,bytes=0 +</code></pre> +<h2>ls</h2> +<p>Listing the child nodes of one path</p> +<pre><code class="language-bash">[zkshell: 36] ls /quota_test + [child_1, child_2, child_3] + +# -s to show the stat +[zkshell: 37] ls -s /quota_test + [child_1, child_2, child_3] + cZxid = 0x110000002d + ctime = Thu Mar 07 11:19:07 UTC 2019 + mZxid = 0x110000002d + mtime = Thu Mar 07 11:19:07 UTC 2019 + pZxid = 0x1100000033 + cversion = 3 + dataVersion = 0 + aclVersion = 0 + ephemeralOwner = 0x0 + dataLength = 0 + numChildren = 3 + +# -R to show the child nodes recursely +[zkshell: 38] ls -R /quota_test + /quota_test + /quota_test/child_1 + /quota_test/child_2 + /quota_test/child_3 + +# -w to set a watch on the child change,Notice: turn on the printwatches +[zkshell: 39] ls -w /brokers + [ids, seqid, topics] +[zkshell: 40] delete /brokers/ids + WATCHER:: + WatchedEvent state:SyncConnected type:NodeChildrenChanged path:/brokers +</code></pre> +<h2>printwatches</h2> +<p>A switch to turn on/off whether printing watches or not.</p> +<pre><code class="language-bash">[zkshell: 0] printwatches + printwatches is on +[zkshell: 1] printwatches off +[zkshell: 2] printwatches + printwatches is off +[zkshell: 3] printwatches on +[zkshell: 4] printwatches + printwatches is on +</code></pre> +<h2>quit</h2> +<p>Quit the CLI windows.</p> +<pre><code class="language-bash">[zkshell: 1] quit +</code></pre> +<h2>reconfig</h2> +<p>Change the membership of the ensemble during the runtime.</p> +<p>Before using this cli,read the details in the <a href="zookeeperReconfig.html">Dynamic Reconfiguration</a> about the reconfig feature,especially the "Security" part.</p> +<p>Pre-requisites:</p> +<ol> +<li> +<p>set reconfigEnabled=true in the zoo.cfg</p> +</li> +<li> +<p>add a super user or skipAcl,otherwise will get “Insufficient permission”. e.g. addauth digest zookeeper:admin</p> +</li> +</ol> +<pre><code class="language-bash"># Change follower 2 to an observer and change its port from 2182 to 12182 +# Add observer 5 to the ensemble +# Remove Observer 4 from the ensemble +[zkshell: 1] reconfig --add 2=localhost:2781:2786:observer;12182 --add 5=localhost:2781:2786:observer;2185 -remove 4 + Committed new configuration: + server.1=localhost:2780:2785:participant;0.0.0.0:2181 + server.2=localhost:2781:2786:observer;0.0.0.0:12182 + server.3=localhost:2782:2787:participant;0.0.0.0:2183 + server.5=localhost:2784:2789:observer;0.0.0.0:2185 + version=1c00000002 + +# -members to appoint the membership +[zkshell: 2] reconfig -members server.1=localhost:2780:2785:participant;0.0.0.0:2181,server.2=localhost:2781:2786:observer;0.0.0.0:12182,server.3=localhost:2782:2787:participant;0.0.0.0:12183 + Committed new configuration: + server.1=localhost:2780:2785:participant;0.0.0.0:2181 + server.2=localhost:2781:2786:observer;0.0.0.0:12182 + server.3=localhost:2782:2787:participant;0.0.0.0:12183 + version=f9fe0000000c + +# Change the current config to the one in the myNewConfig.txt +# But only if current config version is 2100000010 +[zkshell: 3] reconfig -file /data/software/zookeeper/zookeeper-test/conf/myNewConfig.txt -v 2100000010 + Committed new configuration: + server.1=localhost:2780:2785:participant;0.0.0.0:2181 + server.2=localhost:2781:2786:observer;0.0.0.0:12182 + server.3=localhost:2782:2787:participant;0.0.0.0:2183 + server.5=localhost:2784:2789:observer;0.0.0.0:2185 + version=220000000c +</code></pre> +<h2>redo</h2> +<p>Redo the cmd with the index from history.</p> +<pre><code class="language-bash">[zkshell: 4] history + 0 - ls / + 1 - get /consumers + 2 - get /hbase + 3 - ls /hbase + 4 - history +[zkshell: 5] redo 3 + [backup-masters, draining, flush-table-proc, hbaseid, master-maintenance, meta-region-server, namespace, online-snapshot, replication, rs, running, splitWAL, switch, table, table-lock] +</code></pre> +<h2>removewatches</h2> +<p>Remove the watches under a node.</p> +<pre><code class="language-bash">[zkshell: 1] get -w /brokers + null +[zkshell: 2] removewatches /brokers + WATCHER:: + WatchedEvent state:SyncConnected type:DataWatchRemoved path:/brokers + +</code></pre> +<h2>set</h2> +<p>Set/update the data on a path.</p> +<pre><code class="language-bash">[zkshell: 50] set /brokers myNewData + +# -s to show the stat of this node. +[zkshell: 51] set -s /quota_test mydata_for_quota_test + cZxid = 0x110000002d + ctime = Thu Mar 07 11:19:07 UTC 2019 + mZxid = 0x1100000038 + mtime = Thu Mar 07 11:42:41 UTC 2019 + pZxid = 0x1100000033 + cversion = 3 + dataVersion = 2 + aclVersion = 0 + ephemeralOwner = 0x0 + dataLength = 21 + numChildren = 3 + +# -v to set the data with CAS,the version can be found from dataVersion using stat. +[zkshell: 52] set -v 0 /brokers myNewData +[zkshell: 53] set -v 0 /brokers myNewData + version No is not valid : /brokers +</code></pre> +<h2>setAcl</h2> +<p>Set the Acl permission for one node.</p> +<pre><code class="language-bash">[zkshell: 28] addauth digest user1:12345 +[zkshell: 30] setAcl /acl_auth_test auth:user1:12345:crwad +[zkshell: 31] getAcl /acl_auth_test + 'digest,'user1:+owfoSBn/am19roBPzR1/MfCblE= + : cdrwa + +# -R to set Acl recursely +[zkshell: 32] ls /acl_auth_test + [child_1, child_2] +[zkshell: 33] getAcl /acl_auth_test/child_2 + 'world,'anyone + : cdrwa +[zkshell: 34] setAcl -R /acl_auth_test auth:user1:12345:crwad +[zkshell: 35] getAcl /acl_auth_test/child_2 + 'digest,'user1:+owfoSBn/am19roBPzR1/MfCblE= + : cdrwa + +# -v set Acl with the acl version which can be found from the aclVersion using the stat +[zkshell: 36] stat /acl_auth_test + cZxid = 0xf9fc0000001c + ctime = Tue Mar 26 16:50:58 CST 2019 + mZxid = 0xf9fc0000001c + mtime = Tue Mar 26 16:50:58 CST 2019 + pZxid = 0xf9fc0000001f + cversion = 2 + dataVersion = 0 + aclVersion = 3 + ephemeralOwner = 0x0 + dataLength = 0 + numChildren = 2 +[zkshell: 37] setAcl -v 3 /acl_auth_test auth:user1:12345:crwad +</code></pre> +<h2>setquota</h2> +<p>Set the quota in one path.</p> +<pre><code class="language-bash"># -n to limit the number of child nodes(included itself) +[zkshell: 18] setquota -n 2 /quota_test +[zkshell: 19] create /quota_test/child_1 + Created /quota_test/child_1 +[zkshell: 20] create /quota_test/child_2 + Created /quota_test/child_2 +[zkshell: 21] create /quota_test/child_3 + Created /quota_test/child_3 +# Notice:don't have a hard constraint,just log the warning info + 2019-03-07 11:22:36,680 [myid:1] - WARN [SyncThread:0:DataTree@374] - Quota exceeded: /quota_test count=3 limit=2 + 2019-03-07 11:22:41,861 [myid:1] - WARN [SyncThread:0:DataTree@374] - Quota exceeded: /quota_test count=4 limit=2 + +# -b to limit the bytes(data length) of one path +[zkshell: 22] setquota -b 5 /brokers +[zkshell: 23] set /brokers "I_love_zookeeper" +# Notice:don't have a hard constraint,just log the warning info + WARN [CommitProcWorkThread-7:DataTree@379] - Quota exceeded: /brokers bytes=4206 limit=5 + +# -N count Hard quota +[zkshell: 3] create /c1 +Created /c1 +[zkshell: 4] setquota -N 2 /c1 +[zkshell: 5] listquota /c1 +absolute path is /zookeeper/quota/c1/zookeeper_limits +Output quota for /c1 count=-1,bytes=-1=;byteHardLimit=-1;countHardLimit=2 +Output stat for /c1 count=2,bytes=0 +[zkshell: 6] create /c1/ch-3 +Count Quota has exceeded : /c1/ch-3 + +# -B byte Hard quota +[zkshell: 3] create /c2 +[zkshell: 4] setquota -B 4 /c2 +[zkshell: 5] set /c2 "foo" +[zkshell: 6] set /c2 "foo-bar" +Bytes Quota has exceeded : /c2 +[zkshell: 7] get /c2 +foo +</code></pre> +<h2>stat</h2> +<p>Showing the stat/metadata of one node.</p> +<pre><code class="language-bash">[zkshell: 1] stat /hbase + cZxid = 0x4000013d9 + ctime = Wed Jun 27 20:13:07 CST 2018 + mZxid = 0x4000013d9 + mtime = Wed Jun 27 20:13:07 CST 2018 + pZxid = 0x500000001 + cversion = 17 + dataVersion = 0 + aclVersion = 0 + ephemeralOwner = 0x0 + dataLength = 0 + numChildren = 15 +</code></pre> +<h2>sync</h2> +<p>Sync the data of one node between leader and followers(Asynchronous sync)</p> +<pre><code class="language-bash">[zkshell: 14] sync / +[zkshell: 15] Sync is OK +</code></pre> +<h2>version</h2> +<p>Show the version of the ZooKeeper client/CLI</p> +<pre><code class="language-bash">[zkshell: 1] version +ZooKeeper CLI version: 3.6.0-SNAPSHOT-29f9b2c1c0e832081f94d59a6b88709c5f1bb3ca, built on 05/30/2019 09:26 GMT +</code></pre> +<h2>whoami</h2> +<p>Gives all authentication information added into the current session.</p> +<pre><code>[zkshell: 1] whoami +Auth scheme: User +ip: 127.0.0.1 +[zkshell: 2] addauth digest user1:12345 +[zkshell: 3] whoami +Auth scheme: User +ip: 127.0.0.1 +digest: user1 +</code></pre> +</div> +<div class="clearboth"> </div> +</div> +<div id="footer"> + <div class="lastmodified"> + <script type="text/javascript"> + <!-- + document.write("Last Published: " + 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