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.

Answer:- Before we begin, we need to first have the GitHub Jenkins plugin installed. 1. Go to Manage Jenkins on the Jenkins dashboard, and then select Configure System 2. Choose Add GitHub Server in the GitHub section 3. Add the GitHub token as credentials, and Save 4. Open the Jenkins project 5. Tick off the GitHub project checkbox, and give the GitHub Repository path for the Project URL 6. Under Source Code Management, check the Git box, and in Repositories, give the GitHub Repository URL 7. Under Build Triggers, check the ‘Build when a change is pushed to GitHub’ box 8. Set a webhook to Jenkins after the plugin installation is done 9. Go to Settings and then to Integrations & Services from the GitHub repository 10. Select Add Service, and then add Jenkins (GitHub plugin) 11. The URL of the Jenkins machine should be given as Jenkins Hook URL. Add /github-webhook/

Answer:- Some of the important SCM tools that are supported by Jenkins include: Git Subversion CVS Mercurial

Answer:- These are the mechanisms for starting a Jenkins node agent: From the browser window, launch a Jenkins node agent From the command line, launch a Jenkins node agent When we launch a Jenkins node agent, it will download a JNLP file. A new process is launched on the client machine by JNLP when it runs.

Answer:- There is a folder that contains a file named config.xml. We need to change the settings to false for the security to be disabled when Jenkins is started the next time.

Answer:- First, we need to ensure global security. Then, we have to make sure that Jenkins is integrated with the user directory through an appropriate plugin. The project matrix is enabled for fine tuning the access using the custom version-controlled script for automating the process of rights and privileges in Jenkins. The access to Jenkins data or folder is limited. We will run security audits on it.

Answer:- Initially, Jenkins was called Hudson. However, due to some reasons, the name was changed from Hudson to Jenkins.

Answer:- First, we need to open the console output where the broken build is created and then see if there are any file changes that were missed. If we do not find any issues in this manner, then we can update our local workspace and replicate the problem and then try to solve it.

Answer:- First, we need to copy our jobs directory from the old to the new server. There are multiple ways to do it. We can either move the job from the installation by simply copying the corresponding job directory or we can make a clone of the job directory by making an existing job’s copy. For this, we need to have a different name, which we can rename later.

Answer:- Some steps for scheduling builds in Jenkins are as follows: • First, we should have a source code management commit. • We have to complete the other builds. • Then, we have to schedule it to run at a specified time. • We need to then give a manual build request.

Answer:- To configure Jenkins with Maven: 1. On the Jenkins dashboard, go to Manage Jenkins, and select Configure System 2. Scroll down until the Maven section is seen, and then go to Add Maven 3. Uncheck the ‘Install automatically’ box 4. Add any name for the setting and the location of the MAVEN_HOME 5. After saving, one can create a job with the ‘Maven project’ option

Answer:- To create a slave node in Jenkins: 1. Go to Manage Jenkins, and scroll down to Manage Nodes 2. Click on New Node 3. Set the node name, choose the Dumb slave option, and then click on OK 4. Enter the node slave machine details, and click on Save

Answer:- On the Jenkins dashboard, go to Manage Jenkins and then to Manage Plugins. In the Available section, tick off the ‘Deploy to Container Plugin’ box and install it. Then, restart the Jenkins server The next step is to go to the Build project and click on Configure. Choose the ‘Deploy war/ear to a container’ option In the Deploy war/ear to a container section, enter the server details on which the files need to be deployed, and press Save After a successful build, the necessary files will get deployed to the required container.

Answer:- The Puppet is a configuration management tool that is extensively used for automating the administration tasks. Puppet tool helps you deploy, manage and configure your servers.