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Jenkins Installation

Estimated time to read: 3 minutes

Manual Installation On RHEL

Prerequisites

  • Minimum hardware requirements:
    • 256 MB of RAM
    • 1 GB of drive space (although 10 GB is a recommended minimum if running Jenkins as a Docker container)
  • Recommended hardware configuration for a small team:
    • 4 GB+ of RAM
    • 50 GB+ of drive space

Long Term Support release

  • Install Supporting packages 
    sudo su - 
yum install wget tree -y
  • Setup the Jenkins stable Repository 
    sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo

    sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key
sudo yum upgrade
  • Install JDK 
    sudo yum upgrade -y 

    sudo yum install fontconfig java-17-openjdk -y
  • Install Jenkins and reload demon 
    sudo yum install jenkins -y

    sudo systemctl daemon-reload

Start Jenkins

  1. You can enable the Jenkins service to start at boot with the command 
    sudo systemctl enable jenkins
  2. You can start the Jenkins service with the command 
    sudo systemctl start jenkins
  3. You can check the status of the Jenkins service using the command 
    sudo systemctl status jenkins --no-pager

Installation Using Shell Script

Method 1
  1. Create new file named as jenkins.sh 
    touch jenkins.sh
  2. Add the below code in jenkins.sh file 
    vi jenkins.sh 

    #/bin/bash
#Author: Opsfusionlabs
#Orgination: OpsfusionLabs


sudo yum install wget tree -y
sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key
sudo yum upgrade -y
sudo yum install fontconfig java-17-openjdk -y
sudo yum install jenkins -y
sudo systemctl daemon-reload
sudo systemctl enable jenkins
sudo systemctl start jenkins
sudo systemctl status jenkins --no-pager

    :wq!
  3. Change the file permission to make as a executable file 
    chmod +x jenkins.sh
  4. Run Shell Script 
    sh jenkins.sh
Method 2
  1. Clone git repo
  2. Change the file permission to make as a executable file
  3. Run Shell Script

Post-installation setup wizard

  • Browse to http://localhost:8080 (or whichever port you configured for Jenkins when installing it) and wait until the Unlock Jenkins page appears.

Pastedimage20240705095911.png

  • The command: sudo cat /var/lib/jenkins/secrets/initialAdminPassword will print the password at console.

  • Install suggested plugins - to install the recommended set of plugins, which are based on most common use cases.

  • When the Create First Admin User page appears, specify the details for your administrator user in the respective fields and click Save and Finish.