Let's look at the steps required to install Jenkins on CentOS.

For a business unit, it is advisable to have the following requirements:

• Java 8
• 4 GB+ RAM
• 500 GB+ free disk space

Jenkins requires Java. To install Java, execute:

sudo yum install java

1. Jenkins' stable and recent versions are available in a YUM repository.
2. Add the Jenkins repository to the yum repos:

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

3. For the stable version, execute:

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

4. Import the following key:

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

5. Install Jenkins by executing the following command:

sudo yum install jenkins  

• To start the Jenkins service, execute:

sudo service jenkins start  

• To stop the Jenkins service, execute:

sudo service jenkins stop  

• To restart the Jenkins service, execute:

sudo service jenkins restart