五、zookeeper组建的安装与配置

解压zookeeper

[root@master ~]# tar -zxvf zookeeper-3.4.5.tar.gz -C /usr/local/src/

把zookeeper-3.4.5安装目录改为zookeeper

[root@master ~]# mv /usr/local/src/zookeeper-3.4.5/ /usr/local/src/zookeeper

在zookeeper的安装目录下创建data和logs文件夹

[root@master ~]# cd /usr/local/src/zookeeper/
[root@master zookeeper]# mkdir data logs

在每个节点中写入给节点的标识编号，每个节点编号不同，master为1，slave1为2，slave2为3

[root@master zookeeper]# echo 1 > /usr/local/src/zookeeper/data/myid

修改配置文件zoo.cfg

[root@master zookeeper]# cp /usr/local/src/zookeeper/conf/zoo_sample.cfg /usr/local/src/zookeeper/conf/zoo.cfg
[root@master zookeeper]# vim /usr/local/src/zookeeper/conf/zoo.cfg

修改dataDir参数如下

dataDir=/usr/local/src/zookeeper/data

在zoo.cfg文件末尾添加如下参数配置，表示3个zookeeper节点的访问端口号

server.1=master:2888:3888
server.2=slave1:2888:3888
server.3=slave2:2888:3888

修改zooplankton安装目录的归属用户为hadoop用户

[root@master zookeeper]# chown -R hadoop:hadoop /usr/local/src/zookeeper/

从master节点复制zookeeper安装目录到两个slave节点

[root@master zookeeper]# cd
[root@master ~]# scp -r /usr/local/src/zookeeper/ slave1:/usr/local/src/
[root@master ~]# scp -r /usr/local/src/zookeeper/ slave2:/usr/local/src/

在slave1节点上修改zookeeper目录的归属用户为hadoop用户

[root@slave1 ~]# chown -R hadoop:hadoop /usr/local/src/zookeeper/

在slave1节点上配置该节点的myid为2

echo 2 > /usr/local/src/zookeeper/data/myid

在slave2节点上修改zookeeper目录的归属用户为hadoop用户

[root@slave2 ~]# scp -r /usr/local/src/zookeeper/ slave1:/usr/local/src/

在slave1节点上配置该节点的myid为2

[root@slave2 ~]# echo 3 > /usr/local/src/zookeeper/data/myid

在master、slave1、slave2三个节点上增加环境变量配置

[root@master ~]# vim /etc/profile
[root@master ~]# source /etc/profile


export ZOOKEEPER_HOME=/usr/local/src/zookeeper
export PATH=$PATH:$ZOOKEEPER_HOME/bin

分别启动（都切换到hadoop用户）

master

[hadoop@master ~]$ zkServer.sh start
JMX enabled by default
Using config: /usr/local/src/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

查看zookeeper状态

[hadoop@master ~]$ zkServer.sh status
JMX enabled by default
Using config: /usr/local/src/zookeeper/bin/../conf/zoo.cfg
Mode: follower

slave1

[hadoop@slave1 ~]$ zkServer.sh start
JMX enabled by default
Using config: /usr/local/src/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

查看zookeeper状态

[hadoop@slave1 ~]$ zkServer.sh status
JMX enabled by default
Using config: /usr/local/src/zookeeper/bin/../conf/zoo.cfg
Mode: leader

slave2

[hadoop@slave2 ~]$ zkServer.sh start
JMX enabled by default
Using config: /usr/local/src/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

查看zookeeper状态

[hadoop@slave1 ~]$ zkServer.sh status
JMX enabled by default
Using config: /usr/local/src/zookeeper/bin/../conf/zoo.cfg
Mode: leader

关闭

zkServer.sh stop