• zookeeper的shell操作


    一、启动zookeeper集群

      进入zookeeper安装目录下的bin目录内,通过命令启动

    ./zkServer.sh start

      通过命令查看节点状态

    ./zkServer.sh status

      通过命令关闭

    ./zkServer.sh stop

    二、连接zookeeper服务

      启动zookeeper服务之后,输入以下命令,连接到Zookeeper服务,注意:如果没有配置环境变量在zookeeper的安装目录下的bin目录下执行

    ./zkCli.sh -server localhost:2181

      连接成功后显示:

      到这里后我们就很开心了,接下来就可以进行操作了,下面介绍一些zookeeper的shell基本操作

    三、 shell基本操作 

    •   查看节点:ls path [watch]  或   get path [watch]   或   ls2 path [watch]

    ls 命令可以列出 Zookeeper 指定节点下的所有子节点,只能查看指定节点下的第一级的所有子节点;

    get 命令可以获取 Zookeeper 指定节点的数据内容和属性信息

    ls2命令可以列出 Zookeeper 指定节点下的所有子节点及属性信息

    [zk: localhost:2181(CONNECTED) 13] get /                      
    
    cZxid = 0x0
    ctime = Thu Jan 01 08:00:00 CST 1970
    mZxid = 0x0
    mtime = Thu Jan 01 08:00:00 CST 1970
    pZxid = 0x800000008
    cversion = 8
    dataVersion = 0
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 0
    numChildren = 2
    [zk: localhost:2181(CONNECTED) 14] ls /
    [zookeeper, test0000000004]
    [zk: localhost:2181(CONNECTED) 15] ls2 /
    [zookeeper, test0000000004]
    cZxid = 0x0
    ctime = Thu Jan 01 08:00:00 CST 1970
    mZxid = 0x0
    mtime = Thu Jan 01 08:00:00 CST 1970
    pZxid = 0x800000008
    cversion = 8
    dataVersion = 0
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 0
    numChildren = 2
    •   创建节点:create [-s] [-e] path data acl

          其中,-s 或-e 分别指定节点特性,顺序或临时节点,若不指定,则表示持久节点;acl 用来进行权限控制。

      •   创建顺序节点:

      

    [zk: localhost:2181(CONNECTED) 8] create -s /test 123
    Created /test0000000004
    [zk: localhost:2181(CONNECTED) 9] 
      •  创建临时节点:

     

    [zk: localhost:2181(CONNECTED) 16] create -e /test-tmp 123tmp
    Created /test-tmp
      •  创建永久节点:    
    [zk: localhost:2181(CONNECTED) 17] create /test-p 123p
    Created /test-p
    •   查看节点内容:get path [watch]
    [zk: localhost:2181(CONNECTED) 21] get /test-p
    123p
    cZxid = 0x80000000a
    ctime = Wed Jul 04 23:57:01 CST 2018
    mZxid = 0x80000000a
    mtime = Wed Jul 04 23:57:01 CST 2018
    pZxid = 0x80000000a
    cversion = 0
    dataVersion = 0
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 4
    numChildren = 0
    •   更改节点信息:set path data [version]

        data 就是要更新的新内容,version 表示数据版本。

    [zk: localhost:2181(CONNECTED) 22] set /test-p 123456
    cZxid = 0x80000000a
    ctime = Wed Jul 04 23:57:01 CST 2018
    mZxid = 0x80000000b
    mtime = Thu Jul 05 00:01:59 CST 2018
    pZxid = 0x80000000a
    cversion = 0
    dataVersion = 1
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 6
    numChildren = 0
    [zk: localhost:2181(CONNECTED) 23] get /test-p       
    123456
    cZxid = 0x80000000a
    ctime = Wed Jul 04 23:57:01 CST 2018
    mZxid = 0x80000000b
    mtime = Thu Jul 05 00:01:59 CST 2018
    pZxid = 0x80000000a
    cversion = 0
    dataVersion = 1
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 6
    numChildren = 0
    •   删除节点:delete path [version]  若删除节点存在子节点,那么无法删除该节点,必须先删除子节点,再删除父节点。

              Rmr path   递归删除节点。

    [zk: localhost:2181(CONNECTED) 0] ls /
    [test-p, zookeeper, test0000000004]
    [zk: localhost:2181(CONNECTED) 1] delete /test0000000004
    [zk: localhost:2181(CONNECTED) 2] ls /
    [test-p, zookeeper]
    [zk: localhost:2181(CONNECTED) 9] ls /            
    [test-p, zookeeper, test]
    [zk: localhost:2181(CONNECTED) 10] rmr /test       
    [zk: localhost:2181(CONNECTED) 11] ls /     
    [test-p, zookeeper]
    •   quota

        setquota -n|-b val path 对节点增加限制 

    n:表示子节点的最大个数
    b:表示数据值的最大长度
    val:子节点最大个数或数据值的最大长度
    path:节点路径

    [zk: localhost:2181(CONNECTED) 13] setquota -n 2 /test-p
    Comment: the parts are option -n val 2 path /test-p

        listquota path 列出指定节点的 quota

    [zk: localhost:2181(CONNECTED) 14] listquota /test-p    
    absolute path is /zookeeper/quota/test-p/zookeeper_limits
    Output quota for /test-p count=2,bytes=-1
    Output stat for /test-p count=1,bytes=6
    子节点个数为 2,数据长度-1 表示没限制

        delquota [-n|-b] path 删除 quota

    [zk: localhost:2181(CONNECTED) 15] delquota /test-p
    [zk: localhost:2181(CONNECTED) 16] listquota /test-p
    absolute path is /zookeeper/quota/test-p/zookeeper_limits
    quota for /test-p does not exist.
    •   其他命令
      •  history : 列出命令历史
    [zk: localhost:2181(CONNECTED) 17] history
    7 - ls /
    8 - create /test 111
    9 - ls /
    10 - rmr /test
    11 - ls /
    12 - listquota /test-p
    13 - setquota -n 2 /test-p
    14 - listquota /test-p
    15 - delquota /test-p
    16 - listquota /test-p
    17 - history
    ZooKeeper -server host:port cmd args
            stat path [watch]
            set path data [version]
            ls path [watch]
            delquota [-n|-b] path
            ls2 path [watch]
            setAcl path acl
            setquota -n|-b val path
            history 
            redo cmdno
            printwatches on|off
            delete path [version]
            sync path
            listquota path
            rmr path
            get path [watch]
            create [-s] [-e] path data acl
            addauth scheme auth
            quit 
            getAcl path
            close 
            connect host:port
      •   redo:该命令可以重新执行指定命令编号的历史命令,命令编号可以通过history 查看
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  • 原文地址:https://www.cnblogs.com/jifengblog/p/9263817.html
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