Install Jenkins

Prerequisite

Download JDK from Official website.
# wget -O https://download.oracle.com/java/21/latest/jdk-21_linux-x64_bin.rpm

Install JDK & Jenkins

Install JDK RPM Package using yum.
# yum localinstall jdk-21_linux-x64_bin.rpm -y Dependencies resolved. ==================================================================================================================================================== Package Architecture Version Repository Size ==================================================================================================================================================== Installing: jdk-21 x86_64 2000:21.0.1-12 @commandline 188 M Transaction Summary ==================================================================================================================================================== Install 1 Package Total size: 188 M Installed size: 331 M Downloading Packages: Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : jdk-21-2000:21.0.1-12.x86_64 1/1 Running scriptlet: jdk-21-2000:21.0.1-12.x86_64 1/1 Verifying : jdk-21-2000:21.0.1-12.x86_64 1/1 Installed products updated. Installed: jdk-21-2000:21.0.1-12.x86_64 Complete!
Install Jenkins RPM Package using yum.
# yum localinstall jenkins-2.426.2-1.1.noarch.rpm -y Dependencies resolved. ==================================================================================================================================================== Package Architecture Version Repository Size ==================================================================================================================================================== Installing: jenkins noarch 2.426.2-1.1 @commandline 85 M Transaction Summary ==================================================================================================================================================== Install 1 Package Total size: 85 M Installed size: 85 M Downloading Packages: Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Running scriptlet: jenkins-2.426.2-1.1.noarch 1/1 Installing : jenkins-2.426.2-1.1.noarch 1/1 Running scriptlet: jenkins-2.426.2-1.1.noarch 1/1 Verifying : jenkins-2.426.2-1.1.noarch 1/1 Installed products updated. Installed: jenkins-2.426.2-1.1.noarch Complete!
Check Installed JDK Version.
# java --version java 21.0.1 2023-10-17 LTS Java(TM) SE Runtime Environment (build 21.0.1+12-LTS-29) Java HotSpot(TM) 64-Bit Server VM (build 21.0.1+12-LTS-29, mixed mode, sharing)
Check Installed Jenkins Version.
# jenkins --version 2.426.2

Start Jenkins Service

Start and Enable Jenkins Service using systemctl
# systemctl enable jenkins
# systemctl start jenkins
Check Status of Jenkins Service
# systemctl status jenkins ● jenkins.service - Jenkins Continuous Integration Server Loaded: loaded (/usr/lib/systemd/system/jenkins.service; disabled; vendor preset: disabled) Active: active (running) since Thu 2024-01-18 17:14:17 CST; 4min 18s ago Main PID: 4500 (java) Tasks: 44 (limit: 12357) Memory: 628.4M CGroup: /system.slice/jenkins.service └─4500 /usr/bin/java -Djava.awt.headless=true -jar /usr/share/java/jenkins.war --webroot=/var/cache/jenkins/war --httpPort=8080 Jan 18 17:13:03 jenkins-62.linuxtechspace.com jenkins[4500]: Jenkins initial setup is required. An admin user has been created and a password gener> Jan 18 17:13:03 jenkins-62.linuxtechspace.com jenkins[4500]: Please use the following password to proceed to installation: Jan 18 17:13:03 jenkins-62.linuxtechspace.com jenkins[4500]: 9c89e016cc204bc6a78567379f6a4122 Jan 18 17:13:03 jenkins-62.linuxtechspace.com jenkins[4500]: This may also be found at: /var/lib/jenkins/secrets/initialAdminPassword Jan 18 17:13:03 jenkins-62.linuxtechspace.com jenkins[4500]: ************************************************************* Jan 18 17:14:16 jenkins-62.linuxtechspace.com jenkins[4500]: 2024-01-18 23:14:16.888+0000 [id=39] INFO jenkins.InitReactorRunner$1#on> Jan 18 17:14:17 jenkins-62.linuxtechspace.com jenkins[4500]: 2024-01-18 23:14:17.026+0000 [id=31] INFO hudson.lifecycle.Lifecycle#onR> Jan 18 17:14:17 jenkins-62.linuxtechspace.com systemd[1]: Started Jenkins Continuous Integration Server. Jan 18 17:14:18 jenkins-62.linuxtechspace.com jenkins[4500]: 2024-01-18 23:14:18.140+0000 [id=56] INFO h.m.DownloadService$Downloadab> Jan 18 17:14:18 jenkins-62.linuxtechspace.com jenkins[4500]: 2024-01-18 23:14:18.142+0000 [id=56] INFO hudson.util.Retrier#start: Per>

Access Jenkins UI Dashboard

Get the initial Admin credentials from setup file.
# cat /var/lib/jenkins/secrets/initialAdminPassword
Open Jenkins URL in browser.

Note: Replace IP Address with your server IP Address

http://<IP_Address>:8080/
At first page, enter the initial Admin credential password that you collected from previous step. Click on Continue button.
Click on the "Install Suggested Plugin" option.
Wait for all the default plugin to install.
Optionally, create another Admin user account and click on "Save and Continue" button.
You can leave the default URL setting and click on "Save and Finish" button.
Now Jenkins initial setup is complete and its ready for use. Click on the "Start Using Jenkins" button.
You now have the Jenkins Dashboard.
Jenkins Install is complete.