Jenkins in becoming more and more the tool of choice in most continuos integration and DevOps environments.
Jenkins is an open source automation server written in Java. Jenkins helps to automate the non-human part of the whole software development process, with now common things like continuous integration, but by further empowering teams to implement the technical part of a Continuous Delivery.
It is a server-based system running in a servlet container such as Apache Tomcat. It supports SCM tools including AccuRev, CVS, Subversion, Git, Mercurial, Perforce, Clearcase and RTC, and can execute Apache Ant, Apache Maven and sbt based projects as well as arbitrary shell scripts and Windows batch commands. The creator of Jenkins is Kohsuke Kawaguchi. Released under the MIT License, Jenkins is free software.
Installing Jenkins on Oracle Linux is relative easy and only includes a small number of steps as outlined below;
First step is to ensure you have the Jenkins YUM repository available on your Oracle Linux instance so you can do the installation. This includes the following 3 steps
sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo sudo rpm --import https://jenkins-ci.org/redhat/jenkins-ci.org.key sudo yum install jenkins
As soon as you have completed those steps you are able to issue a simple yum install to install Jenkins on your Oracle Linux instance
yum install java
When the installation is done you will have to ensure that Jenkins is started and that it will start every time you reboot your system. The following two commands will make sure that Jenkins is started and that it is included in the startup routine of your Oracle Linux instance
service jenkins start/stop/restart chkconfig jenkins on
If all completed without any issues you should now have a running Jenkins server on your Oracle Linux instance. This means that you should be able to access the server with a browser on port 8080. That is, if you have ensured that your local firewall will allow so if you have one installed.
If you have ensured you can access Jenkins on port 8080 you will see the below screen the first time you access it.
This means that your Jenkins server is running and you have to ensure you follow the instructions on the screen to unlock Jenkins. This is to ensure that you are the only one that can make the initial setup steps.
you should now be ready to start enjoying Jenkins on Oracle Linux.