Page Comparison

Pre-requisites

• OpenJDK8
• Zookeeper

Install OpenJDK

...

$ vim /home/zookeeper/zookeeper-3.4.13/conf/zoo.cfg

dataDir=/var/lib/zookeeper
server.1=node1:2888:3888
server.2=node2:2888:3888
server.3=node3:2888:3888

Now, do the below changes in log4.properties file as follows.

$ vim /home/zookeeper/zookeeper-3.4.13/conf/log4j.properties

zookeeper.log.dir=/var/log/zookeeper 

zookeeper.tracelog.dir=/var/log/zookeeper 

log4j.rootLogger=INFO, CONSOLE, ROLLINGFILE

...

Zookeeper Service Start on all the Nodes.

Image Modified

The log file will be created in /var/log/zookeeper of zookeeper named zookeeper.log, tail the file to see logs for any errors.

$ tail -f /var/log/zookeeper/zookeeper.log

Verify the Zookeeper Cluster and Ensemble

In Zookeeper ensemble out of three servers, one will be in leader mode and other two will be in follower mode. You can check the status by running the following commands.

$ /home/zookeeper/zookeeper-3.4.13/bin/zkServer.sh status