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Initial Setup

By default, Jenkins starts on port number 8080

You can access the Jenkins by opening the ip-address:8080 E.g. localhost:8080 (if it's installed locally) from the browser

Get the initialAdminPassword from a file located in /var/lib/jenkins/secrets/initialAdminPassword

Change to root user and open the /var/lib/jenkins/secrets/initialAdminPassword file to get the password

cat /var/lib/jenkins/secrets/initialAdminPassword

ubuntu@jenkins-test:~$ sudo su
[sudo] password for ubuntu: 
root@jenkins-test:/home/ubuntu# cat /var/lib/jenkins/secrets/initialAdminPassword

783013afbc7346199ef273fbb8b831bb

After entering the password click on continue

Click on Install suggested plugins

This will automatically install the necessary plugins for Jenkins

Enter the username, password, Fullme, E-mail address and click on Save and Continue

Click on Save and Finish

Click on Start using Jenkins

Jenkins initial setup is complete, you should see the Jenkins Dashboard now

Important Tips

Tip

Suggested Plugins: For beginners, always choose "Install suggested plugins". It installs the most commonly used plugins (Git, Pipeline, Ant, Gradle, Mailer, etc.) which covers 90% of use cases.

Important

Admin User: Do not lose the password for the first admin user you create. If you skip user creation and continue as "admin", the password remains the initial temporary password found in the log/file.

🧠 Quick Quiz — Initial Setup

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Where is the initialAdminPassword file located on a standard Linux Jenkins installation?