一.zookeeper安装部署

1.集群规划

hadoop1hadoop2hadoop3
ZookeeperZookeeperZookeeper

2.解压安装
(1)解压Zookeeper安装包到/opt/module/目录下

[yl@hadoop1 software]$ tar -zxvf zookeeper-3.5.7.tar.gz -C /opt/module/

(2)修改/opt/module/apache-zookeeper-3.5.7-bin名称为zookeeper-3.5.7

[yl@hadoop1 module]$ mv apache-zookeeper-3.5.7-bin/ zookeeper-3.5.7

(3)同步/opt/module/zookeeper-3.5.7目录内容到hadoop2、hadoop3
3.配置服务器编号
(1)在/opt/module/zookeeper-3.5.7/这个目录下创建zkData

[yl@hadoop1 zookeeper-3.5.7]$ mkdir zkData

(2)在/opt/module/zookeeper-3.5.7/zkData目录下创建一个myid的文件

[yl@hadoop1 zkData]$ vim myid

在文件中添加与server对应的编号:1
(3)拷贝配置好的zookeeper到其他机器上,并分别在hadoop2、hadoop3上修改myid文件中内容为2、3
4.配置zoo.cfg文件
(1)重命名/opt/module/zookeeper-3.5.7/conf这个目录下的zoo_sample.cfg为zoo.cfg

[yl@hadoop1 conf]$ mv zoo_sample.cfg zoo.cfg

(2)打开zoo.cfg文件

[yl@hadoop1 conf]$ vim zoo.cfg

修改数据存储路径配置(一般存储路径在/tmp目录下,系统会30天自动删除)

dataDir=/opt/module/zookeeper-3.5.7/zkData

增加如下配置

#######################cluster##########################
server.1=hadoop1:2888:3888
server.2=hadoop2:2888:3888
server.3=hadoop3:2888:3888

(3)同步zoo.cfg配置文件到其他机器
5.集群操作
(1)分别启动Zookeeper

[yl@hadoop1 zookeeper-3.5.7]$ bin/zkServer.sh start
[yl@hadoop2 zookeeper-3.5.7]$ bin/zkServer.sh start
[yl@hadoop3 zookeeper-3.5.7]$ bin/zkServer.sh start

(2)分别查看状态

[yl@hadoop1 zookeeper-3.5.7]# bin/zkServer.sh status
JMX enabled by default
Using config: /opt/module/zookeeper-3.5.7/bin/../conf/zoo.cfg
Mode: follower
[yl@hadoop2 zookeeper-3.5.7]# bin/zkServer.sh status
JMX enabled by default
Using config: /opt/module/zookeeper-3.5.7/bin/../conf/zoo.cfg
Mode: leader
[yl@hadoop3 zookeeper-3.4.5]# bin/zkServer.sh status
JMX enabled by default
Using config: /opt/module/zookeeper-3.5.7/bin/../conf/zoo.cfg
Mode: follower

6.启动客户端

[yl@hadoop2 zookeeper-3.5.7]$ bin/zkCli.sh
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