Installation and Setup Jenkins on Centos 7.x

Preparing Node (CenOS)

• Setup Appropriate Hostname with FQDN

          echo "jenkins.rulepaper.com" > /etc/hostname

• Install wget if your node installed with minimal OS installation

          sudo yum install wget -y

• Install Java if it is not already exists

          sudo yum install java -y

• Update system 

     sudo yum update

Installation of a stable Jenkins version

• sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo

• sudo rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key

• sudo yum install jenkins -y

• set the jenkins service to start while booting "sudo chkconfig jenkins on"

• Start the jnekins service "service jenkins start"

Configuration of Jenkins

• Open Jenkins home page using your favourite browser http://hostname:8080 or http://ip-address:8080 

• As mentioned in above pic, get your secure password from mentioned file using cat /var/lib/jenkins/secrets/initialAdminPassword

• After validating your secret password, page will proceed wot SetupWizard

• You can select "install suggested Plugin" option to proceed with plugin installation.

• Suggested plugin installation will start and right side you will see installation status.
• Post installation it will prompt us to create first admin user.

• File the user details and click on "Save and Continue", followed by instance configuration click on "Save and Finish".

• Now Jenkins is ready to start using it click on "Start using Jenkins".

• It will take you to the Jenkins home page.

Will post a video soon on about "Explore Jenkins in Realtime"