Answer:- Jenkins, by default, runs on port number 8080. For changing the existing port from 8080 to the desired port number, we can take the following steps: 1. Run Jenkins using the command line 2. Execute the command, java -jar -httpPort=desired_port jenkins.war If Jenkins is installed using the Windows package, then: 1. Go to Program Files/Jenkins directory 2. Open Jenkins.xml in the editor Find –httpPort=8080 and replace the port 8080 with the new port number

Answer:- The software prerequisites for installing Jenkins are that first we need to install Java Development Kit. We also need to install the Jakarta Enterprise Edition. Jenkins also comes with an embedded Jetty Runtime that can be used if WebSphere or Tomcat is not available.

Answer:- These are the steps used for working with a third-party tool in Jenkins: • First, we have to install the third-party software. • We need to have the plugin that supports the third-party tool. • Then, we must configure the third-party tool in the admin console. • We can then use the plug-in from the Jenkins build job.

Answer:- First, we need to create a Jenkins job by going to the Jenkins top page and then selecting a ‘New Job’ and building a freestyle software project. Some of the elements of a freestyle project include the following: • We need a CVS or a subversion where our source code will reside. • When Jenkins performs the builds, we will need the optional triggers. • We need a build script like a Maven or Ant where the script is actually built.

Answer:- Within the XML configuration, each Jenkins build is stored. When this folder is copied, the configuration of all the build jobs that are managed by the Jenkins master is backed up. If we can perform a Jenkins Git integration, then it is good. When we copy the contents of the folder, we will see that the build jobs described in the folder will be restored when the Jenkins server is started the next time.

Answer:- A complete Jenkins pipeline includes building a project from the source code, putting it through a variety of units, integrating, testing for user acceptance and performance, and then finally deploying the packaged application on an application server. So, the steps in a Jenkins pipeline can be listed as below: • Build • Test • Deploy

Answer:- If we want to create a backup for our file, then we need to regularly backup our Jenkins_Home directory. This will include all the build jobs configuration, all the slave node configuration, and the build history. If we want to create a Jenkins backup, we can copy a job directory to a clone or can rename the directory.

Answer:- Here are some of the most important advantages of Jenkins: • We will get an automated build report every time a change is made to the source code. • We will be able to achieve continuous integration with agile methodology principles. • We can automate the maven release project with a few simple steps. • Bugs can be easily tracked at an early development stage.

Answer:- Here are some of the most important advantages of Jenkins: • We will get an automated build report every time a change is made to the source code. • We will be able to achieve continuous integration with agile methodology principles. • We can automate the maven release project with a few simple steps. • Bugs can be easily tracked at an early development stage.

Answer:- Some of the requirements for using Jenkins are as follows: A source code repository like a Git repository A build script like a Maven script that is checked into the repository

Answer:- Some of the important plugins that are used with Jenkins are: • Git repository • Amazon EC2 • HTML Publisher • JDK Parameter Plugin • Configuration Slicing Plugin

Answer:- The Jenkins Pipeline code is written into a text file called Jenkinsfile, which in turn is checked into a project’s source control repository. 1. Click on the New Item option on the Jenkins dashboard 2. Create a name for the new item 3. Choose the ‘Pipeline’ project, and click on OK 4. In the Pipeline tab, put the Jenkinsfile code 5. Click on Apply and Save 6. Select Build Now, which will start building the Pipeline After the Pipeline is set up, any new branches or pull requests that are created in the repository will be automatically detected by Jenkins, and it will start running Pipelines for them.

Answer:- To configure Docker in Jenkins, we have to follow the below steps: 1. First, we need to click on Manage Jenkins on the Jenkins dashboard. 2. We will then select Manage Plugins on the Configuration page. 3. Next, we need to click on Available once in the tabbed interface, and this will show all the Jenkins plugins available for installation. 4. Then, we will search for a Docker plugin in the search box. There are multiple Docker plugins to choose from. 5. Finally, we will select the Docker plugin.

Answer:- Whenever one wants to integrate Jenkins with GitHub projects, the GitHub plugin can be used. It is used to enable the scheduling of a build, pulling data and code files from the GitHub repository to the Jenkins machine, and triggering every build automatically on the Jenkins server after each commit on the Git repository. This saves time and allows one to incorporate the specific project into the CI process.