Zookeeper的CLI命令

r囧r小猫 2023-08-17 16:01 108阅读 0赞

Zookeeper的命令行界面（CLI）用于与Zookeeper集群进行交互以用于开发目的。

**一、CLI命令**

[zk: localhost:2181(CONNECTED) 0] -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] path
        get [-s] [-w] path
        getAcl [-s] path
        history
        listquota path
        ls [-s] [-w] [-R] path
        ls2 path [watch]            # 已被弃用，等价于ls -s
        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]
        rmr path
        set [-s] [-v version] path data
        setAcl [-s] [-v version] [-R] path acl
        setquota -n|-b val path
        stat [-w] path
        sync path

<table> 
 <tbody> 
  <tr> 
   <td style="border-color:#dbdbdb;">命令</td> 
   <td style="border-color:#dbdbdb;">描述</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>connect host:port</p> </td> 
   <td style="border-color:#dbdbdb;">连接到某台服务器上</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">create [-s] [-e] [-c] [-t ttl] path [data] [acl]</td> 
   <td style="border-color:#dbdbdb;">创建一个新的znode节点，-s表示顺序节点，-e表示临时节点，acl访问控制列表</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>delete [-v version] path</p> </td> 
   <td style="border-color:#dbdbdb;">删除某一节点，只能删除无子节点的节点。-v 表示节点版本号</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">deleteall path</td> 
   <td style="border-color:#dbdbdb;">递归的删除某一节点及其子节点，同rmr命令</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">get [-s] [-w] path</td> 
   <td style="border-color:#dbdbdb;">获取节点数据信息，-s表示获取节点信息，包括时间戳、版本号、数据大小等</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>getAcl [-s] [-w] path</p> </td> 
   <td style="border-color:#dbdbdb;">获取节点的访问控制列表，-s表示顺序节点</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">ls [-s] [-w] [-R] path</td> 
   <td style="border-color:#dbdbdb;">获取节点列表，-s表示获取节点信息，相当于ls2，-R表示递归的获取</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>ls2 path [watch]</p> </td> 
   <td style="border-color:#dbdbdb;">获取节点列表及节点信息，该命令在最新版本中已弃用</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>set [-s] [-v version] path data</p> </td> 
   <td style="border-color:#dbdbdb;"> <p>设置节点数据，-s表示节点为顺序节点，-v 指定版本号</p> </td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">setAcl [-s] [-v version] [-R] path acl</td> 
   <td style="border-color:#dbdbdb;">设置节点的访问控制列表，-s表述顺序节点，-v指定版本号，-R递归的设置</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">state [-w] path</td> 
   <td style="border-color:#dbdbdb;">查看节点信息</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>setquota -n|-b val path</p> </td> 
   <td style="border-color:#dbdbdb;">设置节点的quota(限制)，-n表示子节点个数，-b表示空间大小</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">delquota [-n|-b] path</td> 
   <td style="border-color:#dbdbdb;">删除节点的quota(限制)</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">listquota path</td> 
   <td style="border-color:#dbdbdb;">列出节点的quota信息</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">printwatches</td> 
   <td style="border-color:#dbdbdb;">设置和显示监视状态，on开启，off关闭</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>history</p> </td> 
   <td style="border-color:#dbdbdb;">列出本次会话中的历史操作命令</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">redo cmdno</td> 
   <td style="border-color:#dbdbdb;">再次执行某一命令，cmdno为前一次改名执行是的ID，可通过history命令查看</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>rmr</p> </td> 
   <td style="border-color:#dbdbdb;"> <p>递归的删除某一节点及其子节点，该命令在最新版本中已弃用</p> </td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">sync</td> 
   <td style="border-color:#dbdbdb;">强制同步所有的更新操作到所有节点</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">addauth schema auth</td> 
   <td style="border-color:#dbdbdb;">增加节点认证</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">close</td> 
   <td style="border-color:#dbdbdb;">关闭连接，但是客户端不退出</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">quit</td> 
   <td style="border-color:#dbdbdb;">关闭连接并退出客户端</td> 
  </tr> 
 </tbody> 
</table>

**二、创建Znodes**

语法

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

注：-s 表示创建顺序节点

\-e 表示创建临时节点

\-c

\-t

acl 访问控制列表

举例

[zk: localhost:2181(CONNECTED) 5] create /FirstZnode "MyFirstZookeeper-App”    # 创建永久节点
    Created /FirstZnode
    
    [zk: localhost:2181(CONNECTED) 13] create -s /FirstSequentialZnode "MyFirstSequentialZnode-App"  # 创建顺序节点
    Created /FirstSequentialZnode0000000002
    
    [zk: localhost:2181(CONNECTED) 16] create -e /FirstEphemeralZnode "MyFirstEphemeralZnode-App”    # 创建临时节点，当客户端断开连接时，该节点将被删除
    Created /FirstEphemeralZnode

**三、获取节点数据**

语法

get [-s] [-w] path

注：-s 节点数据+节点信息

\-w 设置监视？

<table style="width:623px;"> 
 <tbody> 
  <tr> 
   <td style="border-color:#dbdbdb;">Key</td> 
   <td style="border-color:#dbdbdb;"> <p>Value</p> </td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;"> <p>cZxid</p> </td> 
   <td style="border-color:#dbdbdb;">节点被创建时的事物的ID</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">crime</td> 
   <td style="border-color:#dbdbdb;">节点的创建时间</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">mZxid</td> 
   <td style="border-color:#dbdbdb;">节点最后一次被修改的事务的ID</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">mtime</td> 
   <td style="border-color:#dbdbdb;">节点最后一次被修改的时间</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">pZxid</td> 
   <td style="border-color:#dbdbdb;">自节点列表最近一次被修改的事务的ID</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">cversion</td> 
   <td style="border-color:#dbdbdb;">子节点版本号</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">dataVersion</td> 
   <td style="border-color:#dbdbdb;">数据版本号</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">aclVersion</td> 
   <td style="border-color:#dbdbdb;"> <p>ACL版本号</p> </td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">ephemeralOwner</td> 
   <td style="border-color:#dbdbdb;">创建临时节点的事务的ID，持久节点事务为0</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">dataLength</td> 
   <td style="border-color:#dbdbdb;">数据长度，每个节点都可保存数据</td> 
  </tr> 
  <tr> 
   <td style="border-color:#dbdbdb;">numChildren</td> 
   <td style="border-color:#dbdbdb;">子节点的个数</td> 
  </tr> 
 </tbody> 
</table>

举例

[zk: localhost:2181(CONNECTED) 6] get /FirstZnode
    MyFirstZookeeper-App
    
    [zk: localhost:2181(CONNECTED) 22] get -s /FirstZnode    # 获取节点数据+节点信息
    MyFirstZnode-App
    cZxid = 0x6
    ctime = Tue Sep 24 08:10:44 CST 2019
    mZxid = 0xb
    mtime = Tue Sep 24 08:29:42 CST 2019
    pZxid = 0x6
    cversion = 0
    dataVersion = 1
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 16
    numChildren = 0
    
    [zk: localhost:2181(CONNECTED) 15] get /FirstSequentialZnode0000000002    # 获取顺序节点必须指定完整路径
    MyFirstSequentialZnode-App

**四、设置节点数据**

语法

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

注：-s 表示设置顺序节点

\-v 表示设置版本号？

举例

[zk: localhost:2181(CONNECTED) 18] set /FirstZnode "MyFirstZnode-App"
    [zk: localhost:2181(CONNECTED) 19] get /FirstZnode
    MyFirstZnode-App

**五、创建子节点**

语法

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

注：参数同*创建节点*

举例

[zk: localhost:2181(CONNECTED) 23] create /FirstZnode/Child1 "MyFirstChildZnode-App"
    Created /FirstZnode/Child1

**六、列出子节点列表**

语法

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

注：-s 列出path指定的节点的节点信息

\-w

\-R 递归的列出子节点列表

举例

[zk: localhost:2181(CONNECTED) 24] ls /
    [FirstEphemeralZnode, FirstSequentialZnode0000000002, FirstZnode, zookeeper]
    
    [zk: localhost:2181(CONNECTED) 25] ls -s /
    [FirstEphemeralZnode, FirstSequentialZnode0000000002, FirstZnode, zookeeper]cZxid = 0x0
    ctime = Thu Jan 01 08:00:00 CST 1970
    mZxid = 0x0
    mtime = Thu Jan 01 08:00:00 CST 1970
    pZxid = 0xa
    cversion = 4
    dataVersion = 0
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 0
    numChildren = 4
    
    [zk: localhost:2181(CONNECTED) 26] ls -R /
    /
    /FirstEphemeralZnode
    /FirstSequentialZnode0000000002
    /FirstZnode
    /zookeeper
    /FirstZnode/Child1
    /zookeeper/config
    /zookeeper/quota

**七、查看节点信息**

语法

stat [-w] path

注：-w

举例

[zk: localhost:2181(CONNECTED) 29] stat /FirstZnode
    cZxid = 0x6
    ctime = Tue Sep 24 08:10:44 CST 2019
    mZxid = 0xb
    mtime = Tue Sep 24 08:29:42 CST 2019
    pZxid = 0xc
    cversion = 1
    dataVersion = 1
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 16
    numChildren = 1

**八、删除节点**

语法

rmr path                    # 递归的删除指定的znode及其子节点,旧版本的命令
    delete [-v version] path    # 删除不带子节点的节点
    deleteall path              # 功能同rmr,新版本的命令

举例

[zk: localhost:2181(CONNECTED) 4] ls -R /                  # 查看所有节点
    /
    /FirstSequentialZnode0000000002
    /FirstZnode
    /zookeeper
    /FirstZnode/Child1
    /zookeeper/config
    /zookeeper/quota
    [zk: localhost:2181(CONNECTED) 5] rmr /FirstZnode          # 旧命令删除
    The command 'rmr' has been deprecated. Please use 'deleteall' instead.
    [zk: localhost:2181(CONNECTED) 6]
    [zk: localhost:2181(CONNECTED) 6]
    [zk: localhost:2181(CONNECTED) 6] deleteall /FirstZnode    # 新命令删除，提示不存在是因为rmr已经将其删除
    Node does not exist: /FirstZnode
    [zk: localhost:2181(CONNECTED) 7] ls -R /                  # 查看确认删除
    /
    /FirstSequentialZnode0000000002
    /zookeeper
    /zookeeper/config
    /zookeeper/quota

待完善......

参考：

\[1\] [http://www.dba.cn/book/zookeeper/][http_www.dba.cn_book_zookeeper]

[http_www.dba.cn_book_zookeeper]: http://www.dba.cn/book/zookeeper/