Zookeeper常用Linux命令整理

Posted 2021-11-23 ZSYL

【Zookeeper】常用Linux命令整理

• 本地模式安装
• Zookeeper配置参数解读
• Zookeeper分布式安装
• • 创建服务器编号
  • 配置zoo.cfg文件
  • 创建节点
  • 删除节点
  • 查看节点状态

本地模式安装

• 启动服务端：bin/zkServer.sh start
• 查看状态：bin/zkServer.sh status
• 启动客户端：bin/zkCli.sh
• 退出：quit
• 关闭服务：bin/zkServer.sh stop
• 查看当前目录下的文件：ls /

Zookeeper配置参数解读

• tickTime=2000ms
• initLimit=10次，连接时长限制10次心跳，10*2s

Zookeeper分布式安装

集群分发Zookeeper:

xsync zookeeper-3.4.10/

至少配置三台服务器

创建服务器编号

• 创建服务器编号
• 在zkData中创建myid

[zs@hadoop102 zookeeper-3.4.10]$ cd zkData/
[zs@hadoop102 zkData]$ touch myid

• 集群间同步分发

xsync myid

配置zoo.cfg文件

[zs@hadoop102 zkData]$ cd ..
[zs@hadoop102 zookeeper-3.4.10]$ cd conf
[zs@hadoop102 conf]$ pwd
/opt/module/zookeeper-3.4.10/conf
[zs@hadoop102 conf]$ vim zoo.cfg
[zs@hadoop102 conf]$ xsync zoo.cfg 

添加以下内容：

#######################cluster##########################
server.2=hadoop102:2888:3888
server.3=hadoop103:2888:3888
server.4=hadoop104:2888:3888

• 启动三台服务器上的zkServer：

[zs@hadoop104 zookeeper-3.4.10]$ bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /opt/module/zookeeper-3.4.10/bin/../conf/zoo.cfg
Mode: follower

启动客户端：

bin/zkCli.sh

[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]

查看详细的信息：

ls2/

WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]
[zk: localhost:2181(CONNECTED) 1] ls2 /
[zookeeper]
cZxid = 0x0
ctime = Thu Jan 01 08:00:00 CST 1970
mZxid = 0x0
mtime = Thu Jan 01 08:00:00 CST 1970
pZxid = 0x0
cversion = -1
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 1

创建节点

创建节点：

[zk: localhost:2181(CONNECTED) 2] create /sanguo "jinlian"

查看三国下面的文件：

ls /sanguo

获取数据：

[zk: localhost:2181(CONNECTED) 9] get /sanguo/shuguo
liubei
cZxid = 0x100000004
ctime = Tue Sep 28 10:20:02 CST 2021
mZxid = 0x100000004
mtime = Tue Sep 28 10:20:02 CST 2021
pZxid = 0x100000004
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 6
numChildren = 0

创建短暂的节点：

[zk: localhost:2181(CONNECTED) 10] create -e /sanguo/wuguo "zhouyu"
Created /sanguo/wuguo

设置节点数据：

set /sanguo/shuguo "diaochan"

获取节点监听：

[zk: localhost:2181(CONNECTED) 4] get /sanguo watch
jinlian
cZxid = 0x100000003
ctime = Tue Sep 28 10:10:38 CST 2021
mZxid = 0x100000003
mtime = Tue Sep 28 10:10:38 CST 2021
pZxid = 0x100000008
cversion = 4
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 2

监听一次有效！

删除节点

delete /sanguo/banzhang

递归删除文件夹

rmr /sanguo

查看节点状态

stat /sanguo