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This article mainly explains "the method of building zookeeper environment in hadoop". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "the method of building zookeeper environment in hadoop".

Server0ip:192.168.88.155 (hadoop01)

Server1ip:192.168.88.164 (hadoop02)

Server2ip:192.168.88.165 (hadoop03)

Extract it to the app directory

[root@hadoop02 Desktop] # tar-zxvf zookeeper-3.4.5.tar.gz-C app/

[root@hadoop02 Desktop] # cd app

[root@hadoop02 app] # cd zookeeper-3.4.5

[root@hadoop02 zookeeper-3.4.5] # cd conf

[root@hadoop02 conf] # mv zoo_sample.cfg zoo.cfg

Vi zoo.cfg

DataDir=/root/Desktop/app/zookeeper-3.4.5/data

Add

Server.1=hadoop01:2888:3888

Server.2=hadoop02:2888:3888

Server.3=hadoop03:2888:3888

[root@hadoop02 conf] # cd..

[root@hadoop02 zookeeper-3.4.5] # mkdir data

[root@hadoop02 zookeeper-3.4.5] # cd data

[root@hadoop02 data] # echo 1 > myid

[root@hadoop02 data] # cat myid

one

[root@hadoop02 data] # cd..

[root@hadoop02 zookeeper-3.4.5] # cd..

[root@hadoop02 app] # ls

Zookeeper-3.4.5

[root@hadoop02 app] # scp-r zookeeper-3.4.5/ hadoop02:/root/Desktop/app

Enter the host of hadoop02

[root@localhost ~] # cd / root/Desktop/app

[root@localhost app] # cd zookeeper-3.4.5

[root@localhost zookeeper-3.4.5] # ls

Bin dist-maven NOTICE.txt zookeeper-3.4.5.jar.asc

Build.xml docs README_packaging.txt zookeeper-3.4.5.jar.md5

CHANGES.txt ivysettings.xml README.txt zookeeper-3.4.5.jar.sha1

Conf ivy.xml recipes

Contrib lib src

Data LICENSE.txt zookeeper-3.4.5.jar

[root@localhost zookeeper-3.4.5] # cd data

[root@localhost data] # ls

Myid

[root@localhost data] # echo 2 > myid

[root@localhost data] # cat myid

two

Enter the server of hadoop03

[root@localhost app] # cd zookeeper-3.4.5

[root@localhost zookeeper-3.4.5] # ls

Bin docs README.txt

Build.xml ivysettings.xml recipes

CHANGES.txt ivy.xml src

Conf lib zookeeper-3.4.5.jar

Contrib LICENSE.txt zookeeper-3.4.5.jar.asc

Data NOTICE.txt zookeeper-3.4.5.jar.md5

Dist-maven README_packaging.txt zookeeper-3.4.5.jar.sha1

[root@localhost data] # ls

Myid

[root@localhost data] # echo 3 > myid

[root@localhost data] # cat myid

three

Start the cluster

[root@hadoop02 conf] # cd..

[root@hadoop02 zookeeper-3.4.5] # cd bin

[root@hadoop02 bin] #. / zkServer.sh start

JMX enabled by default

Using config: / root/Desktop/app/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper... STARTED

[root@hadoop02 bin] # jps

5386 NodeManager

20801 Jps

4912 DataNode

5288 ResourceManager

17430 QuorumPeerMain

5126 SecondaryNameNode

Start hadoop02 in the same way

[root@localhost zookeeper-3.4.5] # cd bin

[root@localhost bin] # ls

README.txt zkCli.cmd zkEnv.cmd zkServer.cmd

ZkCleanup.sh zkCli.sh zkEnv.sh zkServer.sh

[root@localhost bin] #. / zkServer.sh start

JMX enabled by default

Using config: / root/Desktop/app/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper... STARTED

[root@localhost bin] # jps

9635 QuorumPeerMain

5538 SecondaryNameNode

5722 ResourceManager

9649 Jps

5195 NameNode

5820 NodeManager

5322 DataNode

Start hadoop03

Root@localhost zookeeper-3.4.5] # cd bin

[root@localhost bin] # ls

README.txt zkCli.cmd zkEnv.cmd zkServer.cmd

ZkCleanup.sh zkCli.sh zkEnv.sh zkServer.sh

[root@localhost bin] #. / zkServer.sh start

JMX enabled by default

Using config: / root/Desktop/app/zookeeper-3.4.5/bin/../conf/zoo.cfg

Starting zookeeper... STARTED

[root@localhost bin] # jps

9275 Jps

5520 SecondaryNameNode

5691 ResourceManager

5789 NodeManager

9251 QuorumPeerMain

5310 DataNode

Hadoop01

[root@hadoop02 bin] #. / zkServer.sh status

JMX enabled by default

Using config: / root/Desktop/app/zookeeper-3.4.5/bin/../conf/zoo.cfg

Mode: follower

Hadoop02

[root@localhost bin] #. / zkServer.sh status

JMX enabled by default

Using config: / root/Desktop/app/zookeeper-3.4.5/bin/../conf/zoo.cfg

Mode: leader

Hadoop03

Root@localhost bin] #. / zkServer.sh status

JMX enabled by default

Using config: / root/Desktop/app/zookeeper-3.4.5/bin/../conf/zoo.cfg

Mode: follower

If there is Error contacting service. It is probably not running. Error

Generally speaking, the zookeeper-3.4.5 cluster does not start successfully. If there is still a problem after ensuring that each zookeeper-3.4.5 starts up,

[root@hadoop01 ~] # find /-name zookeeper.out

/ root/Desktop/app/zookeeper-3.4.5/bin/zookeeper.out

Find out the location of the log and view it

Tail-50 / root/Desktop/app/zookeeper-3.4.5/bin/zookeeper.out

Connect the client

[root@hadoop02 bin] # sh zkCli.sh

[zk: localhost:2181 (CONNECTED) 0] help help

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

[zookeeper]

[zk: localhost:2181 (CONNECTED) 2] create / hadoop 78

Created / hadoop

[zk: localhost:2181 (CONNECTED) 4] get / hadoop

seventy-eight

[zk: localhost:2181 (CONNECTED) 7] set / hadoop xxxx

[zk: localhost:2181 (CONNECTED) 5] create / hadoop/test mon:hadooop;tue:hdfs

Created / hadoop/test

[zk: localhost:2181 (CONNECTED) 6] get / hadoop/test

Mon:hadooop;tue:hdfs

Connect hadoop03

[zk: localhost:2181 (CONNECTED) 0] get / hadoop

seventy-eight

Threads for kill-9 jps

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