Linux(centos)下ZooKeeper集群环境搭建
本人使用的环境是CentOS-6.4-x86_64-bin-DVD1.rar,zookeeper-3.4.5.tar.gz,jdk-7u67-linux-x64.tar.gz,apache-tomcat-7.0.29.tar.gz。三台机器ip:192.168.1.123,192.168.1.124,192.168.1.125。同时关闭三台虚拟机的防火墙:chkconfig iptables off(永久关闭防火墙)
第一步:上传zookeeper-3.4.5.tar.gz文件到/usr/local/software下,并解压到/usr/local
tar -zxvf zookeeper-3.4.5.tar.gz -C /usr/local/
重命名:mv zookeeper-3.4.5/* zookeeper/
第二部:配置环境变量 vim /etc/profile
export ZOOKEEPER_HOME=/usr/local/zookeeper
export PATH=.:$JAVA_HOME/bin:$ZOOKEEPER_HOME/bin:$PATH
第三步:修改配置文件
cd /usr/local/zookeeper/conf
mv zoo_sample.cfg zoo.cfg //重命名
vim zoo.cfg
dataDir=/usr/local/zookeeper/data
//最后添加
server.0=192.168.1.123:2888:3888
server.1=192.168.1.124:2888:3888
server.2=192.168.1.125:2888:3888
# 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/zookeeper/data
# the port at which the clients will connect
clientPort=2181
#
# 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
server.0=192.168.1.123:2888:3888
server.1=192.168.1.124:2888:3888
server.2=192.168.1.125:2888:3888
第四步:创建文件夹
mkdir /usr/local/zookeeper/data
在/usr/local/zookeeper/data下创建文件myid,并填写文件内容0或1或2
vim myid //在123上填写内容为0,在124上填写内容为1,在125上填写内容为2
第五步:启动zookeeper
zkServer.sh start //启动服务
zkServer.sh status //查看状态
第六步:进入客户端
zkCli.sh //进入客户端
根据提示命令进行操作
查找: ls / ls /zookeeper
创建并赋值:create /ss shensheng
获取:get /ss
设值:set /ss wey
可以看到集群数据的一致性
rmr /path 递归删除节点
delete /path/child 删除指定某个节点
创建节点有两种类型:短暂(ephemeral)长久(persistent)
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