What Is Jenkins and Why Should You Be Using It?

December 6, 2022
- by mix

As a result, every commit made to the source code in the repository was built. If the build result shows that there is a bug in the code, then the developers only need to check that particular commit. This significantly reduced the time required to release https://www.globalcloudteam.com/ new software. You can even get skilled in server automation, continuous integration, continuous deployment, build pipelines, and more. The main purpose of Jenkins is to automate the continuous integration and delivery processes in software development.

What is Jenkins and why we use it

It continuously pulls, builds, and tests any code commits made by a developer with the help of plugins; hence it is preferably installed on a server. Jenkins has a long history, stretching back to 2011, and its roots extend back even further to 2004. That was the year that Kohsuke Kawaguchi, a Java developer at Sun Microsystems, built an automation tool to help him answer the question of whether his code would break the build before he committed it. The open source tool he built, called Hudson, automated tests and builds and helped him understand whether his code would work much sooner.

Easy to Set Up

Your team can write more complex tests to cover other bases as well, including unit, integration, stress, regression testing, etc. As a job executor, Jenkins can be used to automate repetitive tasks like backup/restore databases, turn on or turn off machines, collect statistics about a service and other tasks. Since every job can be scheduled, repetitive tasks can have a desired time interval (like once a day, once a week, every fifth day of hire jenkins developers the month, and so forth). Continuous delivery is the ability to make changes of all types—such as new features, configuration changes, error fixes, experiments—into production in a safe and efficient manner using short work cycles. To use Jenkins through a Docker image, you must select the SCM type in the first step. Then provide the URL and the required credentials to create a pipeline from one repository or scan all company repositories.

It has a thriving, active community, it’s easy to deploy, and supports most environments. It’s a free, open-source solution, and you can customize your Jenkins distribution to your needs. The declarative pipeline can express most of what you need to define pipelines, and is much easier to learn than the scripted pipeline syntax, which is a Groovy-based DSL. The scripted pipeline is in fact a full-blown programming environment. Before Jenkins, the best a developer could do to avoid breaking the nightly build was to write and test their code carefully and successfully on a local machine before committing it.

Most commonly used Jenkins Plugins

Java is a proven enterprise development language with a broad ecosystem. This places Jenkins on a solid base that can be extended using common design patterns and frameworks. Learn how to create a Jenkins project and run the resulting build job. The need for Jenkins becomes especially acute when deploying to a microservices architecture. Since one of the goals of microservices is to frequently update applications and services, the ability to do so cannot be bounded by release bandwidth. More and smaller services with faster update intervals can only be achieved by the type of automation Jenkins provides.

What is Jenkins and why we use it

To improve the usability and functionality of tools like Jenkins, you can use cloud-based cross browser testing platforms. One such platform is LambdaTest that also offers a Jenkins Plugin to accelerate your automated browser testing activities. With LambdaTest, you can perform tests on 3000+ combinations of browsers, operating systems, and devices.

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It is a process where there is continuous testing of source code after it is committed to making sure that it is free from bugs or errors. As a continuous integration tool, Jenkins helps development teams identify errors in the early stages of a project, and automate the integration process of new code. CI/CD is a significant part of the DevOps process and plays an important role in everything from startups to the largest tech companies like Netflix.


In this method, every integration is checked by an automated build to search the error. Every phase is monitored, and a notification will be triggered to the user if anything breaks. Even you have the privilege to stop the entire process in between.

  • It integrates all the different parts of the development in one place,
    this makes it easier to handle all the different parts of the software
    development process.
  • Maybe the wasted effort gave your boss a bad impression about it.
  • CD builds are automatically deployed through to the production environment and can also be used for broader beta testing.
  • Jenkins is an open-source Continuous Integration server written in Java for orchestrating a chain of actions to achieve the Continuous Integration process in an automated fashion.
  • In the context of Jenkins, a pipeline refers to a collection of jobs (or events) connected in a specific order.

There is no difference in the performance and problem solvability perspective. Scripted and declarative are the two types of Jenkins pipelines. When a DevOps engineer writes a Jenkins pipeline, they choose either to create in the scripted syntax or the declarative one. This process gets repeated endlessly through the whole development cycle. Davinder Passed his post-graduation with merit, he was the first one to submit his project on time, He is highly skilled in typing and research work. He is having more than 16 years of working experience as a freelance technical writer on creating keyword-rich content for clients in various technology.

Unraveling Static in Java: Understanding its Purpose and Use

Continuous deployment automates the final step of deploying the code to its final destination. The original version of Jenkins is non-opinionated, making it an excellent tool for many uses. Jenkins 2 has since been released with increased usability, built-in support for delivery pipelines, and backwards compatibility with Jenkins installations.

What is Jenkins and why we use it

Jenkins Pipeline includes several plugins that support the implementation and integration of CI pipelines in Jenkins. This tool suite is extensible and can be used to model continuous delivery pipelines as codes, regardless of their complexity. You write the pipeline’s definition in a Jenkinsfile, which is a text file used in the project’s repository. Continuous Integration is a process of integrating code changes from multiple developers in a single project many times. If the deployment is successful, the code is pushed to production. Jenkins was created by Kohsuke Kawaguchi, a developer at Sun MicroSystems.

Jenkins Release Cycle

But that meant testing one’s changes in isolation, without everyone else’s daily commits. There was no firm guarantee that the nightly build would survive the latest commit. In this example, the flakey-deploy.shscript will be retried five times. If the health-check.shscript fails to execute within five minutes, Jenkins will mark the pipeline’s “Deploy” stage as failed. A Jenkins node is an umbrella term for Agents and Controllers, regardless of their actual roles.

Jenkins Automation

It is used for continuous integration and providing technical aspects for the facilitation of continuous delivery. Jenkins is usually installed on the server where the central build takes place. The usually followed practice ensures that as soon as code commit is done, a build is triggered. This article explains how Jenkins works, its key features and use cases, and the functionality of a Jenkins pipeline. Jenkins works by enabling developers to run builds of the new or updated source code fragments in parallel.

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