What is Jenkins? | Jenkins For Continuous Integration

Jenkins is the most commonly used continuous integration (CI) tool. It’s great for continuous delivery and development workflow automation. Jenkins can also be extended with plugins on demand. Today, I will be sharing the basics of Jenkins, its features, and its benefits with you.

Jenkins is an open-source automation server. Its basic purpose is to make the lives of developers and system administrators easier. Using Jenkins for continuous integration (CI) is a common practice that many companies use to automatically build software in every commit/push and run your unit tests.

What is Jenkins?

Jenkins is a free software project management tool. It is used by developers to keep track of their projects, teams, tasks, and modifications. It’s intended for use by software developers who need to computerize their workflow. The main idea is that you create a. Jenkins’s file in your home directory which describes what should be done on each of your project’s repositories.

Jenkins is a Docker-based open-source continuous integration server.CI (Completely contains): runs automated tests, downloads, builds, and runs the app, all while being automatically deployed to a remote host (and log file). Main services: webhooks for push notifications when code changes are pushed to the remote host, triggers for user sign-up, API gateway, allows unlimited plugins.

Jenkins, a software development and Continuous Delivery tool, is used by many companies to build and test their applications with tested functionality ahead of deployment to production. The project is maintained by Thought Works as a community effort, with contributions from many companies and individuals. A paid version exists as well, called Jenkins Enterprise. The goal of Jenkins is to make creating distributed systems as straightforward as possible for non-specialists.

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Jenkins Example 

Jenkins, a continuous integration tool, will test your project’s builds and show you the errors so as to allow you to fix them before they become too serious.

Examples of possible steps taken by Jenkins are:

  • Perform a software build by utilizing an Apache build system such as Gradle or Maven
  • Follow the shell script.
  • A build result archive.
  • Execute the software test

Workflow Phases

  • Using the repository
  •  Installing Jenkins
  •  Creating a plugin
  •  Testing the plugin
  •  Deploying the plugin
  •  Understanding Jenkinsfiles
  •  Creating a Jenkinsfile in Grafana setup
  •  Defining triggers and alerts in a Jenkinsfile (Advanced section)

History of Jenkins

The history of Jenkins is a tale of a distributed, loosely coupled, Build Automation System. From its humble beginnings as Hudson to its deployment as the leading open-source continuous integration software Jenkins was built around one guiding principle – make tooling simple.

The official Jenkins website has been around since 2011, but its backstory goes back to 2005. At that time, Kohsuke Kawaguchi began working for Sun Microsystems as a Java developer. He was dissatisfied with his limited ability to contribute to the core Java platform and the slow pace at which new features were being added. Inspired by Kevin Carson’s prose in The Essential Java Programming Guide, he began writing an automated testing framework known as Hudson. While Hudson wasn’t originally designed for unit testing, it quickly became the go-to tool for testing Java codebases due to its simplicity and robustness.

What is meant by Continuous Integration?

Continuous Integration (CI) is the process of automatically building, packaging, and uploading apps to a hosted instance of your software development tool of choice. CI can make your life easier by ensuring your application builds successfully against multiple different platform versions at once. It can also provide substantial value for your organization by streamlining development cycles and facilitating the sharing of build artifacts among team members faster than with traditional deployment methods.

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Continuous Integration with Jenkins

Continuous integration is a new way of integrating software development projects. It allows you to include source code for your software projects in other software projects, and automatically run tests on those projects. Jenkins is one tool that makes continuous integration possible.

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Pros and Cons of Jenkins


  • The key advantage of Jenkins over traditional text editors and IDEs is its extensibility. You can develop new plugins to extend its functionality.
  • You can use plugins to automate workflows that would otherwise require interaction with other teams.
  • Jenkins also provides a convenient way to package your code for delivery to other developers. This improves communication within your company because the code is already designed to work with other developers.
  • The main advantage of using Jenkins is that you end up with a stable project that can be used for several projects of your choice.


  • It’s hard to set up
  • It’s hard to maintain
  • It’s hard to run in a distributed environment
  • It’s hard to monitor and optimize
  • It is slower than other CI servers.

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