ZooKeeper安装方法具体解释

ZooKeeper安装方式分为两种，一种为单机模式。一个为集群模式，集群模式须要事先正确配置hadoop集群，安装方法參考hadoop-1.2.1安装方法具体解释



单机模式安装：

1、上传并解压zookeeper-3.4.5.tar.gz

[hadoop@mdw temp]$ cp
/mnt/cdrom/zookeeper-3.4.5.tar.gz .

[hadoop@mdw temp]$ tar
xzf zookeeper-3.4.5.tar.gz 



2、在.bashrc文件里配置ZooKeeper环境变量，并使之生效

export ZOOKEEPER_HOME=/home/hadoop/zookeeper-3.4.5
export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HBASE_HOME/bin:$HIVE_HOME/bin:$PIG_HOME/bin:$ZOOKEEPER_HOME/bin

3、创建ZooKeeper数据文件夹

[hadoop@mdw ~]$ mkdir
-p /home/hadoop/data/zookeeper





4、复制/home/hadoop/zookeeper-3.4.5/conf/zoo_sample.cfg文件。命令为zoo.cfg

[hadoop@mdw conf]$ cp
zoo_sample.cfg zoo.cfg



5、改动ZooKeeper的配置文件zoo.cfg中的參数，设置dataDir为刚创建的文件夹

dataDir=/home/hadoop/data/zookeeper



6、启动ZooKeeper

[hadoop@mdw ~]$ zkServer.sh
start

JMX enabled by default

Using config: /home/hadoop/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED





能够看到ZooKeeper已启动，至此单机模式的ZooKeeper已完毕安装。

集群模式安装：

在单机模式的基础上继续改动配置：

1、停止ZooKeeper

[hadoop@mdw ~]$ zkServer.sh
stop

JMX enabled by default

Using config: /home/hadoop/zookeeper-3.4.5/bin/../conf/zoo.cfg

Stopping zookeeper ... STOPPED





2、改动zoo.cfg配置參数。加入下面内容

dataLogDir=/home/hadoop/zookeeper-3.4.5/logs



server.1=192.168.10.200:7000:7001

server.2=192.168.10.201:7000:7001

server.3=192.168.10.202:7000:7001





这里的ip是三台主机的ip



3、在ZooKeeper安装文件夹下创建日志logs文件夹，即參数dataLogDir配置的文件夹

[hadoop@sdw1 zookeeper-3.4.5]$ mkdir
logs



4、在三台主机上都创建ZooKeeper的data文件夹

[hadoop@mdw ~]$ mkdir
-p /home/hadoop/data/zookeeper

[hadoop@sdw1 ~]$ mkdir
-p /home/hadoop/data/zookeeper

[hadoop@sdw2 ~]$ mkdir
-p /home/hadoop/data/zookeeper



5、三台电脑上分别在ZooKeeper的data文件夹(/home/hadoop/data/zookeeper)创建myid文件,内容分别为1、2、3

[hadoop@mdw zookeeper]$
cat myid 

1

[hadoop@swd1 zookeeper]$
cat myid 

2





[hadoop@sdw2 zookeeper]$
cat myid 

3





6、将配置好的ZooKeeper安装文件和.bashrc文件发送到另外两台主机

[hadoop@mdw ~]$ scp
-r zookeeper-3.4.5/ sdw1:~

[hadoop@mdw ~]$ scp
-r zookeeper-3.4.5/ sdw2:~

[hadoop@mdw ~]$ scp
.bashrc sdw1:~

[hadoop@mdw ~]$ scp
.bashrc sdw2:~



7、在三台主机上分别启动ZooKeeper

[hadoop@mdw ~]$ zkServer.sh
start

JMX enabled by default

Using config: /home/hadoop/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED





[hadoop@sdw1 ~]$ zkServer.sh
start

JMX enabled by default

Using config: /home/hadoop/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED





[hadoop@sdw2 ~]$ zkServer.sh
start

JMX enabled by default

Using config: /home/hadoop/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED





8、检查ZooKeeper的状态

[hadoop@mdw ~]$ jps

3316 QuorumPeerMain

2747 JobTracker

2664 SecondaryNameNode

2517 NameNode

3333 Jps



[hadoop@mdw ~]$ zkServer.sh
status

JMX enabled by default

Using config: /home/hadoop/zookeeper-3.4.5/bin/../conf/zoo.cfg

Mode: follower





[hadoop@sdw1 ~]$ jps

3006 QuorumPeerMain

2271 DataNode

3141 Jps

2335 TaskTracker

[hadoop@sdw1 ~]$ zkServer.sh
status

JMX enabled by default

Using config: /home/hadoop/zookeeper-3.4.5/bin/../conf/zoo.cfg

Mode: leader





[hadoop@sdw2 ~]$
jps

2286 DataNode

2354 TaskTracker

2901 Jps

2796 QuorumPeerMain

[hadoop@sdw2 ~]$ zkServer.sh
status

JMX enabled by default

Using config: /home/hadoop/zookeeper-3.4.5/bin/../conf/zoo.cfg

Mode: follower





到此ZooKeeper的集群模式已安装成功