Zookeeper 基础命令总结

刺骨的言语ヽ痛彻心扉 2022-09-14 14:22 186阅读 0赞

zookeeper下载版本 apache-zookeeper-3.6.3-bin.tar.gz，在下载时候要选择xxx-bin.tar.gz才是安装包，不带bin的是源码包。

一 zkCli连接服务器

# -server指定目标服务器地址,不写-server 默认连接本机2181端口
    ./zkCli.sh -server 127.0.0.1:2181

二 帮助文档

连接服务器成功后输入 h 显示帮助信息
    [zk: 127.0.0.1:2181(CONNECTED) 0] h
    ZooKeeper -server host:port -client-configuration properties-file cmd args
            addWatch [-m mode] path # optional mode is one of [PERSISTENT, PERSISTENT_RECURSIVE] - default is PERSISTENT_RECURSIVE
            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 [-b batch size]
            delquota [-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 val path
            stat [-w] path
            sync path
            version

三 创建节点

create [-s] [-e] [-c] [-t ttl] path [data] [acl]
    
    -s 顺序节点，节点后面会追加一串数字
    -e 临时节点，会话断开自动删除
    
    在test目录下创建两个顺序节点
    [zk: 127.0.0.1:2181(CONNECTED) 10] create /test
    Created /test
    [zk: 127.0.0.1:2181(CONNECTED) 11] create -s /test/a 1
    Created /test/a0000000000
    [zk: 127.0.0.1:2181(CONNECTED) 12] create -s /test/b 1
    Created /test/b0000000001

四 查看节点状态

[zk: 127.0.0.1:2181(CONNECTED) 16] stat /test
    cZxid = 0xb
    ctime = Fri Oct 08 17:57:20 CST 2021
    mZxid = 0xe
    mtime = Fri Oct 08 17:59:21 CST 2021
    pZxid = 0xd
    cversion = 2
    dataVersion = 1
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 1
    numChildren = 2
    
    cZxid 节点创建时事务ID
    ctime 节点创建时间
    mZxid 节点修改时的事务ID
    mtime 节点修改时间
    pZxid 子节点列表发生变化（添加或删除子节点）时增加或删除的子节点事务ID
    cversion 子节点列表发生变化（添加或删除子节点）数据版本递增 （跟随pZxid变化）
    dataVersion 当前节点数据版本

五 更新节点

在用set更新节点前要先创建节点，否则会报节点不存在
    [zk: 127.0.0.1:2181(CONNECTED) 14] set /test 1
    [zk: 127.0.0.1:2181(CONNECTED) 15] get /test
    1
    
    
    指定更新时校验版本号，如果提供的版本号与原版本号不等则更新失败
    [zk: localhost:2181(CONNECTED) 20] stat /test
    cZxid = 0x18
    ctime = Fri Oct 08 18:11:58 CST 2021
    mZxid = 0x1c
    mtime = Fri Oct 08 18:14:01 CST 2021
    pZxid = 0x18
    cversion = 0
    dataVersion = 3
    aclVersion = 0
    ephemeralOwner = 0x0
    dataLength = 3
    numChildren = 0
    [zk: localhost:2181(CONNECTED) 21] set -v 1 /test 1
    version No is not valid : /test

六 删除操作

如果下级节点为空 直接用delete可以删除
    delete /test
    
    如果下级节点不空 需用deleteall删除
    [zk: localhost:2181(CONNECTED) 33] create /test/a 1
    Created /test/a
    [zk: localhost:2181(CONNECTED) 34] delete /test
    Node not empty: /test
    [zk: localhost:2181(CONNECTED) 35] deleteall /test

七 查询

查看节点 ls 通过-R显示下级路径
    
    [zk: localhost:2181(CONNECTED) 37] ls /
    [zookeeper]
    [zk: localhost:2181(CONNECTED) 38] ls -R /
    /
    /zookeeper
    /zookeeper/config
    /zookeeper/quota