This tutorial will guide you through the steps of installing Jenkins on a CentOS 7 system using the official Jenkins repository.
Before continuing with this tutorial, make sure you have logged in as a sudo user.
Installation of Jenkins
To install Jenkins on your CentOS system, follow these steps:
Jenkins is a Java application, so the first step is to install Java. A The following command to install the OpenJDK 8 package:
sudo yum installs java-1.8.0-openjdk-devel
The current version of Jenkins does not yet support Java 10 (and Java 11). If you have multiple versions of Java installed on your computer, make sure that Java 8 is the default Java version.
The next step is to enable the Jenkins repository. To do so, import the GPG key using the following
curl --silent --location http://pkg.jenkins-ci.org/redhat-stable/jenkins.repo | sudo tee /etc/yum.repos.d/jenkins.repo
And add the repository to your system with:
sudo rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key
Once the repository is enabled, install the latest stable version of Jenkins by typing:
At the end of the installation process, start the Jenkins service with:
sudo systemctl start jenkins
To check if it started correctly:
You should see something like this:
sudo systemctl to enable Jenkins
jenkins.service is not a native service, redirecting to / sbin / chkconfig. Running / sbin / chkconfig jenkins on
Adjust the firewall
If you install Jenkins on a remote CentOS server that is protected by a firewall, you need to port it
Use the following commands to open the necessary port:
sudo firewall-cmd --permanent --zone=public --add-port=8080/ tcp sudo firewall-cmd --reload
Set up Jenkins
To configure your new installation of Jenkins, open your browser and type in your domain or IP address followed by the port
http: // your_ip_or_domain: 8080
A screen similar to the following will appear, asking you to enter the administrator password that is created during the installation:
Use the following command to print the password on the terminal:
sudo cat / var / lib / jenkins / secrets / initialAdminPassword
You should see a long 32-character alphanumeric password as shown below:
Copy the password from your terminal, paste it in the Administrator password field and click
On the next screen, you'll be asked if you'd like to install the recommended plug-ins or select specific plug-ins. Click on
Install the suggested plugins box, and the installation process will start immediately.
Once the installation is complete, you will be prompted to configure the first administrative user. Fill in all the required information and click
Save and continue.
On the next page you will be asked to set the URL for the Jenkins instance. The archived URL will be populated with an automatically generated URL.
To complete the configuration, confirm the URL by clicking on the
Save and Finish button.
Finally, click on
Start using Jenkins button and you will be redirected to the Jenkins dashboard registered as an admin user you created in one of the previous steps.
If you've reached this point, you've successfully installed Jenkins on your CentOS system.
In this tutorial, you learned how to install and complete the initial Jenkins setup on CentOS / RHEL-based systems. You can now visit the official Jenkins documentation page and start exploring Jenkins' workflow and plug-in model.
If you have any questions, please leave a comment below.