How to Install and configure Jenkins on CentOS Stream 9

To install Jenkins on CentOS Stream 9, follow the steps below.

Step 1 : Ensure your system is up to date by running the following command:

sudo dnf update

Step 2 :Install OpenJDK using the following command:

sudo dnf install java-17-openjdk

Step 3 : Add the Jenkins repository key to your system:

sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io-2023.key

Step 4 : Add the Jenkins repository to your system:

sudo wget -O /etc/yum.repos.d/jenkins.repo \
    https://pkg.jenkins.io/redhat-stable/jenkins.repo

Step 5 : Install Jenkins using the following command:

sudo dnf install jenkins

Step 6 : Start the Jenkins service:

sudo systemctl start jenkins

Step 7 : Enable Jenkins to start on boot:

sudo systemctl enable jenkins

Step 8 : Check the status of the Jenkins service:

sudo systemctl status jenkins

Step 9 : If you are using a firewall, allow traffic to Jenkins:

sudo firewall-cmd --add-port=8080/tcp --permanent
sudo firewall-cmd --reload

Step 10 : Retrieve the initial admin password from the following file:

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

Step 11 : Access Jenkins in your web browser using the server's IP address or domain followed by port 8080.

Step 12 : Log in to Jenkins using the initial admin password obtained in Step 10.

Step 13 : Choose to install suggested plugins.

Step 14 : Wait for the plugin installation process to complete.

Step 15 : Create an admin user for Jenkins.

Step 16 : Configure the Jenkins URL in the Jenkins settings.

Congratulations, you have successfully installed and configured Jenkins on CentOS Stream 9.