Jenkins Interview Questions and Answers




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Top Jenkins Interview Questions and Answers - 2021 [UPDATED]

Are you looking for Jenkins Interview Questions and Answers? Than you are at the Right Place. Browse through Popular and Most Asked Interview Questions for Jenkins.  There is a Huge Demand for Jenkins Professionals in the Market. These Questions are suitable for both Freshers and Experienced Professionals and are based on Trending Topics and as per Current Industry Requirements.

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Jenkins Interview Questions and Answers

  • 49 Questions

Jenkins is an open source application developed for CI (continuous integration) and delivery using java language.

Jenkins can act as tool for both CI and CD. The pipeline helps in identifying the problem in the project quickly and efficiently using LDAP email.

CircleCI, Teamcity, codeship

Continuous Integration (CI) is defined as Building software and taking it through as many tests as possible with every change.

Jenkins can integrate with various version control system and check for the build with every change in the code.

Plugins are the primary means of improving the functionality of a Jenkins environment to suit organization or user specific needs.

There are two ways to install plugins in jenkins

1> Using the “Plugin Manager” in the wen UI 2> Using the Jenkins CLI install-plugin command.

There are almost 100s of plugins in Jenkins few important plugins include. Build monitor Corbetura Email SSH

Yes it is possible to install a custom plugin.

To uninstall a plugin do the following Go to Manage Jenkins ? Manage plugins. Click on the Installed tab. Some of the plugins will have an Uninstall option.

Minimum hardware requirements for Jenkins Usages is : 256 MB of RAM. 1 GB of drive space.

Maven Jenkins 1. Maven is a build tool, in short, a successor of ant. 2. It helps in build and version control 1. Jenkins is continuous integration system, where in maven is used for build. 2. Jenkins can be used to automate the deployment process.

A Jenkins project is a repeatable build work that contains steps and post builds activities. The kinds of activities you can perform in a build step or post-build activity are very constrained.

A downstream activity is an arranged project that is activated as a feature of an execution of pipeline.

An upstream activity is an arranged project that triggers a project as of its execution.

An upstream activity is an arranged project that triggers a project as of its execution.

Jenkins Pipeline is a mix of modules that help the mix and usage of ceaseless conveyance pipelines utilizing Jenkins.

A Jenkins file can be written using two types of syntax – Declarative and Scripted.

Declarative pipeline linguistic structure offers a simple method to make pipelines. It contains a predefined progressive system to make Jenkins pipelines. It enables you to control all parts of a pipeline execution in a basic, clear way.

Scripted Jenkins pipeline keeps running on the Jenkins ace with the assistance of a lightweight agent. It utilizes not many assets to make an interpretation of the pipeline into nuclear directions. Both declarative and scripted language structure is unique in relation to one another and are characterized absolutely in an unexpected way.

The default port in Jenkins in 8080

Using the CLI and running java -jar Jenkins.war –httpPort=8282 can change the default port.

Edit the file in the default directory /etc/default/Jenkins. And change the HTTP_PORT= 8001 and restart.

Jenkins underpins the master-slave design, numerous slaves work for a master. It is otherwise called Jenkins Distributed Builds. It additionally enables you to run occupations on various situations like Linux, macOS, Windows, etc. We can likewise run a similar experiment on various conditions in parallel utilizing Jenkins Distributed Builds, which thus causes you to accomplish the ideal outcomes rapidly utilizing this dispersed methodology. The majority of the activity results are gathered and consolidated on the master hub for observing.

Scheduling build jobs. Dispatching builds to the slaves for the execution. Monitor the slaves. Recording and presenting the build results. It can also execute build jobs directly.

It hears demands from the Jenkins Master case. Slaves can keep running on an assortment of working frameworks. The activity of a Slave is to do as they are advised to, which includes executing fabricate occupations dispatched by the Master. We can arrange an undertaking to dependably keep running on a specific Slave machine or a specific sort of Slave machine, or essentially let Jenkins pick the following accessible Slave.

Running Selenium tests in Jenkins enables you to run your tests each time your software changes and send the software to another environment when the tests pass. Jenkins can plan your tests to keep running at explicit time. You can spare the execution history and Test Reports.

Jenkins has a worked in direction line interface that enables you to get to Jenkins from the content or from your shell. This is helpful for mechanization of routine errands, mass updates, inconvenience determination, etc. This interface is gotten through the Jenkins CLI customer, which is a Java JAR document disseminated with Jenkins.

Jenkins has a worked in direction line interface that enables you to get to Jenkins from the content or from your shell. This is helpful for the computerization of routine errands, mass updates, inconvenience analysis, etc. This interface is gotten to by means of the Jenkins CLI client, which is a Java JAR file circulated with Jenkins.

Matrix-based security is one of the approval techniques accessible for verifying Jenkins. It enables you to give explicit consent to clients and gatherings. The accessible authorizations are recorded beneath with their portrayals and are additionally accessible by floating over the consent heading in the Jenkins UI.

Yes we can delete the workspace.

Easy Upgrade Open Source (Free) Easily Build Pipe line Support Configuration Setup is Very Easy

HTML Publisher Git Join Green Balls Amazon EC2

Start with Command Prompt D:\>Java –jar Jenkins.war Type the above command and Start the Jenkins

Scripted Pipelines is Given by the Below Syntax Node { }

Git AccuRev Clearcase RTC CVS Perforce Subversion Mercurial What are the CT tools Used in Jenkins GitLab CI,Go CD,Bamboo,Jenkins,Travis CI,,CircleCI, Codeship, TeamCity The Above mentioned tools are common Ct tools Used in Jenkins.

In Jenkins Flow control follows the pipeline scripted pipeline that are being implemented from the top to bottom of the Jenkins file.

After the finishing of different forms. By source code, the executives (adjustments) submit. At a particular time. By mentioning manual forms.

To protect Jenkins from a user with local access, the Configuration of Jenkins_Home is good. Protect Jenkins’s master from malicious build agents- Master-Slave Architecture.

Nexus, JFrog, and s3- The purpose of artifactory is that we can create our own repository to maintain multiple versions of the delivery of the project.

Default. Jenkins local folder

Discard Old Build option is used

Slave server for the Jenkins user launch Slave agent via SSH

With the use of PREFIX to configure to install Jenkins it into your home directory with non root access in Linux

Cron Expression is a utility to schedule job periodically as per the user requirement in Jenkins

How to write the shell script command to deploy or move the any builld war file to destination folder select SH shell script and give like below. cp -r “source path” “destination path”

Using Parameters, the project can be parameterized.

Pipeline Jenkins File is used for Jenkins Pipeline which is a text file