What Is Jenkins in CI CD Everything You Need To Know

Hence, the development and operations teams can reduce the stress of constantly integrating and deploying changes with Jenkins. A user-defined block, which contains all the processes such as build, test, deploy, etc. Jenkinsfile can also be committed to the source control repository of the project. With Jenkinsfile, the CD Pipeline is also treated as a part of the application that is versioned, committed, and reviewed like any other piece of code. The Pipeline also provides a set of tools that are useful for modeling simple as well as complex delivery pipelines ‘as code’ through ‘Pipeline Domain-Specific Language ’ syntax. At the time of what is Jenkins blog, it had close to 1500+ plugins contributed by the community.

How Jenkins works

The above-performed UAT tests are automated for continuous delivery with a tool known as Selenium. The code is appended to the master branch to create a golden build if the test is passed. It is then directly deployed into the production pipeline. It is evident from the above-stated problems that not only the software delivery process became slow but the quality of software also went down. So to overcome such chaos there was a dire need for a system to exist where developers can continuously trigger a build and test for every change made in the source code.

Jenkins for CI/CD

As developers keep pushing code, Jenkins Agents can run different builds versions of the code for different platforms. Jenkins Master controls how the respective builds should operate. If there are no build, integration, and testing issues with the checked-in code, the changes and tested application are automatically deployed to the Prod/Production server. Jenkins is designed in such a manner that makes it relatively easy to distribute work across multiple machines and platforms for the accelerated build, testing, and deployment. Jenkins is an open-source automation server used for automating code development.

How Jenkins works

Jenkins can be used to schedule and monitor the running of a shell script via user interface instead of command prompt. Provides a standardized API for other plugins to store and retrieve different types of credentials. The Jenkins project was originally named Hudson, and was renamed in 2011 after a dispute with Oracle, which had forked the project and claimed rights to the project name. The Oracle fork, Hudson, continued to be developed for a time before being donated to the Eclipse Foundation.

Jenkins Automation

Continuous integration requires the developers to have regular builds. The general practice is that whenever a code commit occurs, a build what is jenkins should be triggered. Jenkins is an open source automation tool written in Java programming language that allows continuous integration.

How Jenkins works

Jenkins takes the development steps from integration to deployment, automating every step of the way. Jenkins X combines Jenkins with open source tools like Helm, Docker, Nexus, and KSync. It automatically installs, configures, and upgrades these tools to integrate them into your CI/CD process.

What is a Jenkins pipeline?

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. Learn Jenkins through tutorials and lessons online, paced to the speed of your learning. The process to install and configure Jenkins is pretty tedious.

How Jenkins works

This Jenkins Tutorial for beginners and professionals will help you learn how to use Jenkins, one of the most popular CI/CD tools used in DevOps. Like other open-source projects, Jenkins also produces two release lines – LTS (Long-Term Support) and Weekly releases. Jenkins is very good with releases, as stable releases happen every four weeks. Though Hudson and Jenkins were being developed independently, Jenkins acquired significantly more projects & contributors than Hudson. Consequently, Hudson is no longer maintained by the community. Continuous Integration & Continuous Delivery are integral parts of DevOps, as they are used for integrating multiple stages of the methodology.

Declarative Pipeline Sample

Jenkins is an open-source automation platform that enables a digital application’s continuous development and deployment. It is written in Java and has plugins that cater to various facets and characteristics of continuous integration. It can help enterprises accelerate their software or app development initiatives significantly. All development life-cycle elements can be easily integrated into the product for every new feature or customization. This includes the creation of new builds, documents, packaging, staging, deployment, analysis, etc. After Circle CI is authorized on GitHub or Bitbucket, every code change triggers tests in a clean container or VM.

  • Also, for heavier, more extensive projects, one Jenkins server would quickly be overwhelmed.
  • Blue Ocean is still at the alpha stage of development, but the goal is for Jenkins users to be able to install it alongside the Jenkins Classic UI through a plugin.
  • Therefore, a build is one run of a defined project with various steps.
  • Plugins, extensibility, and online community are the core USPs of Jenkins.
  • You can create your CI/CD code libraries, which can be referenced in your pipeline script.
  • It is with the support of multiple plugins that Jenkins makes everything possible, from builds to deployments, post-build email notifications and report generation.

The build process will proceed to the next stage if all unit tests pass. Also, the tool uses many servers to execute parallel builds to reduce the time it takes to accomplish other tasks. Continuous development refers to the process of automating the development and packaging of source code and https://globalcloudteam.com/ deploying it to testing and production environments. Continuous deployment is the process of automating the deployment of the source code to its desired destination. Jenkins automates the software builds in a continuous manner and lets the developers know about the errors at an early stage.


Other plugins can specify different branches, such as a Git branch, a Subversion branch, a GitHub Pull Request, and so on. Jenkins is a widely used program with over 300,000 installations worldwide and rising daily. Software firms may speed up their software development process by adopting Jenkins, which can automate test and build at a high pace.

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