How to install and configure Jenkins on Ubuntu 18.04?

Jenkins is a popular open-source automation server that helps to automate the building, testing, and deployment of software applications. It provides a variety of plugins that support the integration of various tools and technologies into the development pipeline. In this article, we will learn how to install and configure Jenkins on Ubuntu 18.04.

Prerequisites

Before we begin, make sure you have a user account with sudo privileges. If you don't have one, create one using the following command

sudo adduser your_username

After adding the user account, add the user to the sudo group using the following command

sudo usermod -aG sudo your_username

Step 1: Install Java

Jenkins requires Java to be installed on the system. Run the following command to install Java on Ubuntu

sudo apt-get update

sudo apt-get install default-jdk

Step 2: Add the Jenkins repository key

To install Jenkins, we need to add its repository key to the apt package manager. Run the following command to add the key

wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -

Step 3: Add the Jenkins repository

After adding the key, we need to add the Jenkins repository to the apt sources list. Run the following command to add the repository

sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'

Step 4: Install Jenkins

To install Jenkins, run the following command

sudo apt-get update

sudo apt-get install jenkins

Step 5: Start Jenkins

After installing Jenkins, start the service using the following command

sudo systemctl start jenkins

Step 6: Verify the installation

To verify that Jenkins is running, open a web browser and enter the following URL

http://your_server_ip:8080

If everything works fine, you should see the Jenkins login page.

Step 7: Configure Jenkins

After verifying the installation, you need to configure Jenkins. Follow the steps below,

Copy the initial administrator password from the following file

sudo cat /var/lib/jenkins/secrets/initialAdminPassword

Paste the password into the Jenkins login page and click "Continue."

Choose "Install suggested plugins" and wait for the plugins to install.

Create an administrator user account.

Choose the URL for Jenkins and click "Save and Finish."

Finally, click "Start using Jenkins" to access the Jenkins dashboard.

Conclusion

In this article, we learned how to install and configure Jenkins on Ubuntu 18.04. Jenkins is a powerful tool that can automate the development pipeline and improve the efficiency of your development process. With Jenkins, you can easily integrate various tools and technologies into your pipeline and ensure that your applications are built, tested, and deployed consistently.


How to install and configure Jenkins on Ubuntu 20.04?

How to install and configure Jenkins on Ubuntu 22.04?

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