How to Install and configure Jenkins on CentOS Stream 10

To install Jenkins on CentOS Stream 10, follow the steps below:

Step 1 : Update your system to ensure all packages are up to date:

sudo dnf update -y

Step 2 : Jenkins requires Java. Install OpenJDK with:

sudo dnf install -y java-21-openjdk

Step 3 : Import the Jenkins repository GPG key:

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

Step 4 : Add the Jenkins repository using the following command:

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 -y 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 : Verify if Jenkins is running properly:

sudo systemctl status jenkins

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

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

Step 10 : To set up Jenkins for the first time, retrieve the initial admin password:

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

Step 11 : Open your browser and navigate to Jenkins:

http://<your-server-ip>:8080

Step 12 : Log in with the initial admin password retrieved earlier.

Step 13 : After logging in, select Install suggested plugins to get started with the recommended setup.

Step 14 : Wait for Jenkins to finish installing the plugins.

Step 15 : Create your Jenkins admin user by filling out the required fields.

Step 16 : Set the Jenkins URL to match your server's domain or IP.

Step 17 : Click Start using Jenkins to complete the setup.

Congratulations! You have successfully installed and configured Jenkins on CentOS Stream 10.