zookeeper

下载安装

wget http://mirrors.hust.edu.cn/apache/zookeeper/zookeeper-3.4.13/zookeeper-3.4.13.tar.gz

解压：

tar -zxvf zookeeper-3.4.13.tar.gz

把名字改短一些

mv zookeeper-3.4.13 /usr/local/apps/zookeeper

配置环境变量：

vi /etc/profile

在配置文件中添加：
export ZOOKEEPER_HOME=/usr/local/apps/zookeeper
export PATH=$PATH:$ZOOKEEPER_HOME/bin

复制一份zoo_sample.cfg并改名为zoo.cfg  

cp zoo_sample.cfg zoo.cfg

 vi zoo.cfg 查看配置

修改dataDir

# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial 
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between 
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just 
# example sakes.
dataDir=/usr/local/apps/tmp/zkData
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the 
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
#autopurge.snapRetainCount=3
# Purge task interval in hours
# Set to "0" to disable auto purge feature
#autopurge.purgeInterval=1

启动zookeeper

zkServer.sh start

运行客户端

zkCli.sh

help查看命令

	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

查看节点：ls / 

[zk: localhost:2181(CONNECTED) 0] ls /
[cluster, brokers, zookeeper, dubbo, admin,config]

创建节点：create /test

[zk: localhost:2181(CONNECTED) 3] create /test "aaa"     
[zk: localhost:2181(CONNECTED) 4] ls /
[cluster, brokers, zookeeper, dubbo, admin,config,test]
[zk: localhost:2181(CONNECTED) 5] 

删除节点：delete /test　

[zk: localhost:2181(CONNECTED) 8] delete /test
[zk: localhost:2181(CONNECTED) 9] ls /
[cluster, brokers, zookeeper, dubbo, admin,config]
[zk: localhost:2181(CONNECTED) 10] 

获取节点数据 get /dubbo

[zk: localhost:2181(CONNECTED) 10] get /dubbo
192.168.23.1
cZxid = 0xa
ctime = Tue Sep 25 20:42:48 CST 2018
mZxid = 0xa
mtime = Tue Sep 25 20:42:48 CST 2018
pZxid = 0x15
cversion = 2
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 12
numChildren = 2
[zk: localhost:2181(CONNECTED) 11]