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Jenkins Tool

Jenkins Tool is a software that allows continuous integration. Jenkins tool will be installed on a server where the central build will take place. The following flowchart demonstrates a very simple workflow of how Jenkins works.

Why Jenkins

Along with Jenkins tool, sometimes, one might also see the association of Hudson. Hudson is a very popular open-source Java-based continuous integration tool developed by Sun Microsystems which was later acquired by Oracle. After the acquisition of Sun by Oracle, a fork was created from the Hudson source code, which brought about the introduction of Jenkins.

What is Continuous Integration?

Continuous Integration is a development practice that requires developers to integrate code into a shared repository at regular intervals. This concept was meant to remove the problem of finding later occurrence of issues in the build lifecycle. Continuous integration requires the developers to have frequent builds. The common practice is that whenever a code commit occurs, a build should be triggered.

Install Jenkins Tool

Download only the war file and copy the war file to your TOMCAT/webapp folder. It will automatically get installed. Now your Jenkins is available to you at localhost:8080/jenkin

unlock jenkins

Install the recommended pluggins

Install suggested pluggin - jenkins

Create First Admin User in Jenkins Tool

Create First Admin User on Jenkins

Now Configure Jenkins tool using the Manage Jenkins menu

Once Jenkins is up and running, one can access Jenkins from the link − http://localhost:8080

This link will bring up the Jenkins dashboard.

Configure Jenkins

Jenkins dependency errors

Configure Jenkins

Check Installed Pluggins

Installed Pluggins

Jenkins and Tomcat Setup

Copy the Jenkis.war file which was downloaded from the previous section and copy it to the webapps folder in the tomcat folder.

Now open the command prompt. From the command prompt, browse to the directory where the tomcat7 folder is location. Browse to the bin directory in this folder and run the start.bat file


Once the processing is complete without major errors, the following line will come in the output of the command prompt.

INFO: Server startup in 1302 ms

Open the browser and go to the link − http://localhost:8080/jenkins. Jenkins will be up and running on tomcat.

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