大数据基础设施搭建 - ZooKeeper

一、上传压缩包

注意：ZooKeeper依赖JDK

二、解压压缩包

[hadoop@hadoop102 software]$ tar -zxvf apache-zookeeper-3.5.7-bin.tar.gz -C /opt/module/

三、本机安装

3.1 修改配置文件

3.1.1 创建ZooKeeper数据存储目录

[hadoop@hadoop102 ~]$ cd /opt/module/apache-zookeeper-3.5.7-bin/
[hadoop@hadoop102 apache-zookeeper-3.5.7-bin]$ mkdir zkData

3.1.2 修改配置文件名

必须修改，否则配置文件不起作用

[hadoop@hadoop102 apache-zookeeper-3.5.7-bin]$ cd conf/
[hadoop@hadoop102 conf]$ mv zoo_sample.cfg zoo.cfg

3.1.2 修改配置文件内容

[hadoop@hadoop102 conf]$ vim zoo.cfg

内容：zookeeper的数据存储路径/myid文件存放路径

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

3.3 启动/停止服务端

[hadoop@hadoop102 apache-zookeeper-3.5.7-bin]$ bin/zkServer.sh start
[hadoop@hadoop102 apache-zookeeper-3.5.7-bin]$ bin/zkServer.sh stop

查看状态：

[hadoop@hadoop102 apache-zookeeper-3.5.7-bin]$ bin/zkServer.sh status

3.4 测试

（1）启动客户端

[hadoop@hadoop102 apache-zookeeper-3.5.7-bin]$ bin/zkCli.sh

（2）测试客户端操作

[zk: localhost:2181(CONNECTED) 0] ls /
[zk: localhost:2181(CONNECTED) 1] quit

四、集群安装

4.1 配置服务器编号

文件名称必须是myid
文件必须在配置的dataDir目录下

[hadoop@hadoop102 ~]$ cd /opt/module/apache-zookeeper-3.5.7-bin/zkData
[hadoop@hadoop102 zkData]$ vim myid

myid内容：

2

4.2 配置zoo.cfg文件

[hadoop@hadoop102 zkData]$ cd /opt/module/apache-zookeeper-3.5.7-bin/conf/
[hadoop@hadoop102 conf]$ vim zoo.cfg

内容：增加集群节点配置

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

4.3 同步到其他机器

（1）同步ZooKeeper软件

[hadoop@hadoop102 conf]$ mytools_rsync /opt/module/apache-zookeeper-3.5.7-bin/

（2）修改其他机器myid

[hadoop@hadoop103 ~]$ cd /opt/module/apache-zookeeper-3.5.7-bin/zkData/
[hadoop@hadoop103 zkData]$ vim myid
# myid内容改为：3
[hadoop@hadoop104 ~]$ cd /opt/module/apache-zookeeper-3.5.7-bin/zkData/
[hadoop@hadoop104 zkData]$ vim myid
# myid内容改为：4

4.4 启动/停止集群

# 启动
[hadoop@hadoop102 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh start
[hadoop@hadoop103 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh start
[hadoop@hadoop104 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh start

# 停止
[hadoop@hadoop102 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh stop
[hadoop@hadoop103 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh stop
[hadoop@hadoop104 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh stop

# 查看状态
[hadoop@hadoop102 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh status
[hadoop@hadoop103 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh status
[hadoop@hadoop104 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkServer.sh status

4.5 测试

（1）启动客户端

[hadoop@hadoop104 zkData]$ /opt/module/apache-zookeeper-3.5.7-bin/bin/zkCli.sh

（2）测试客户端操作

[zk: localhost:2181(CONNECTED) 0] ls /
[zookeeper]
[zk: localhost:2181(CONNECTED) 1] quit