What Is Jenkins? Key Concepts, Architecture & Pros Cons

The Jenkins Pipeline executes on a node block that is usually a part of the Scripted Pipeline syntax. The implementation in a Pipeline can be reviewed like normal source code. Single Jenkinsfile can be used for creating a Pipeline build process for all the branches and executing pull requests.

Furthermore, the backbone of this tool is the Jenkins community. This incredible community supports the project and plays a significant role in its success. At present, there are millions of downloads and active users of Jenkins. Continuous integration is a procedure to integrate all the code changes done by several developers in one project. A code is repeatedly tested after a commit to guarantee the code is error and bug-free. Written in Java, Jenkins allows continuous development, testing, and deployment of newly created codes.

What is the Jenkins Pipeline?

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. It’s a server-based application that necessitates using a web server such as Apache Tomcat. It is evident from the above-stated problems that not only the software what is jenkins 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 is the most mature CI tool available so let us see how Continuous Integration with Jenkins overcame the above shortcomings.

CloudBees has also supported the growth of Jenkins Area Meetups around the world and recently contributed the JAMS to the CDF where they can continue to grow. A next generation CI/CD platform designed for cloud-native applications, offering dynamic builds, progressive delivery, and much more. 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. Jenkins optionally deploys the changes to the production server if the code has no issues. The build server builds the code and generates an artifact.

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If the tests do not pass, the developer can be immediately notified to take corrective action. ” as it is easy to determine which commit caused the build to fail. If all the unit tests pass, then the build pipeline can proceed to the next phase with integration tests which typically take longer to run. Used by many advanced DevOps teams delivering cutting-edge, cloud-native applications, Jenkins has been around for quite a while.

If a plugin does not exist, you can code it and share it with the community. You can run the Jenkins WAR standalone or as a servlet in a Java application server such as Tomcat. In either case, it produces a web user interface and accepts calls to its REST API. In March 2018 Jenkins X software project for Kubernetes was publicly presented, with support for different cloud providers including AWS EKS among others.

Real-world Applications of Jenkins

A node is a machine on which you can build projects and pipelines. Jenkins automatically monitors the health of all connected nodes, and if metrics go below a threshold, it takes the node offline. DevOps toolsand notify users https://globalcloudteam.com/ when a merge request is ready to merge. This is typically the case when all tests have been passed and all other conditions have been satisfied. Furthermore, the merging request may indicate the difference in code coverage.

  • Jenkins is well-known, with an extensive knowledge base, comprehensive documentation, and a thriving community.
  • The basic installation of Jenkins operating along is called a “master” or “controller.” The controller handles all tasks for your build system in this configuration.
  • Software Deployment Fix deployment problems using modern strategies and best practices.
  • Jenkins is distributed as a WAR archive and as installer packages for the major operating systems, as a Homebrew package, as a Docker image, and as source code.
  • These tools help in information sharing, process automation, reduction in deployment time, in continuous deployment, etc.
  • Depending on the project and build requirements, you could opt for ‘N’ number of agents.

A centralized communication platform is a must-have for large teams, and one of the most popular platforms for this purpose is Slack. Jenkins may be integrated with Slack, allowing communication such as triggered activities, their times, users’ names, and outcomes to be shared with others. Jenkins dramatically improves the efficiency of the development process. For example, a command prompt code may be converted into a GUI button click using Jenkins.

Community & Support

Meanwhile, the Jenkins server checks the repository at regular intervals for changes. Jenkins is interconnected with well over 1,000 plugins that allow it to integrate with most of the development, testing and deployment tools. The Jenkins Pipeline plugin we’ve been using supports a general continuous integration/continuous delivery use case, which is probably the most common use for Jenkins. There are specialized considerations for some other use cases. A declarative pipeline, the simpler of the two, uses Groovy-compatible syntax—and if you want, you can start the file with #! A declarative pipeline starts with a pipeline block, defines an agent, and defines stages that include executable steps, as in the three-stage example below.

what is jenkins software

Before settling for Jenkins, I would carefully examine more modern products in this space such as GitLab CI. Automation, including CI/CD andtest automation, is one of the key practices that allow DevOps teams to deliver “faster, better, cheaper” technology solutions. Jenkins Pipelines can be extremely useful for realizing CD requirements for large-scale projects.

DevOps Tutorial For Beginners

It is possible to escalate the software development process with Jenkins automation. Throughout the life cycle, it helps you manage software delivery processes. Various life cycle stages include building, testing, documenting, packaging, staging, deployment, and more. Developers commit code to a git repo, Jenkins looks for changes, tests changes, and informs developers. Jenkins is an open source automation server written in Java. It is used to continuously build and test software projects, enabling developers to set up a CI/CD environment.

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