zookeeper的shell操作
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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:
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。
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- 创建顺序节点:
[zk: localhost:2181(CONNECTED) 8] create -s /test 123 Created /test0000000004 [zk: localhost:2181(CONNECTED) 9]
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- 创建临时节点:
[zk: localhost:2181(CONNECTED) 16] create -e /test-tmp 123tmp Created /test-tmp
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- 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
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- 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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