Zookeeper是一个协调服务，可以用它来作为配置维护、名字服务、分布式部署；
下面，我来分享一下在Linux下安装Zookeeper的整个步骤，让大家少走弯路。
一、Zookeeper下载
- [root@localhost 下载]# wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.11/zookeeper-3.4.11.tar.gz
- --2017-02-15 13:15:57-- http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.4.11/zookeeper-3.4.11.tar.gz
- 正在解析主机 mirror.bit.edu.cn (mirror.bit.edu.cn)... 114.247.56.117
- 正在连接 mirror.bit.edu.cn (mirror.bit.edu.cn)|114.247.56.117|:80... 已连接。
- 已发出 HTTP 请求，正在等待回应... 200 OK
- 长度：11833706 (11M) [application/octet-stream]
- 正在保存至: “zookeeper-3.3.6.tar.gz”
- 100%[======================================================================================================================================================================================>] 11,833,706 171KB/s 用时 68s
- 2017-02-15 13:17:07 (170 KB/s) - 已保存 “zookeeper-3.3.6.tar.gz” [11833706/11833706])
二、解压
[root@localhost deploy]# tar -zxvf /home/lk/下载/zookeeper-3.3.6.tar.gz
解压完之后，会在deploy文件夹下面得到一个zookeeper-3.4.11的文件夹
三、进入到conf目录
[root@localhost deploy]# cd /opt/deploy/zookeeper-3.4.11/conf
四、拷贝zoo_samle.cfg为zoo.cfg
- [root@localhost conf]# cp zoo_sample.cfg zoo.cfg
五、编辑zoo.cfg文件
- [root@localhost conf]# vi zoo.cfg
修改为：
- # 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.
- dataDir=/usr/zookeeper
- dataLogDir=/usr/zookeeper/log
- # the port at which the clients will connect
- clientPort=2181
- server.1=192.168.147.128:3888
六、设置环境变量
- [root@localhost conf]# export ZOOKEEPER_INSTALL=/opt/deploy/zookeeper-3.3.6
- [root@localhost conf]# export PATH=$PATH:$ZOOKEEPER_INSTALL/bin
七、启动
- [root@localhost bin]# ./zkServer.sh start
- JMX enabled by default
- Using config: /opt/deploy/zookeeper-3.4.11/bin/../conf/zoo.cfg
- Starting zookeeper ... STARTED
- [root@localhost bin]#
八、测试zookeeper
- [root@localhost bin]# ./zkCli.sh -server 192.168.147.128:2181
如果是本地连接，那么不需要 默认是本地
注意：如果出现拒绝连接，请检查如下：
1、防火墙是否关闭 systemctl stop firewalld