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zookeeper的shell操作

程序员文章站 2022-06-29 10:49:32
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 通过命令查看节点状态 通过命令关闭 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b ......

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:

zookeeper的shell操作

  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