What Is Jenkins and How Does it Work? Intro and Tutorial

Jenkins X is useful regardless of your familiarity with Kubernetes, providing a CI/CD process to facilitate cloud migration. It supports bootstrapping onto your chosen cloud, which is crucial for a hybrid setup. You can use multiple Jenkins Agents to balance build load, improve performance, and create a secure environment independent of the Controller. The “Security Realm” and the “Authorization Realm” are the two security realms that Jenkins supports.

Jenkins is an open-source automation server written in java that automates parts of the software development process. It is used to build, test and deploy software continuously which makes it easier for developers to integrate changes to the project and makes it easier for users to obtain a fresh build. Jenkins provides hundreds of plugins to support building, deploying and automating any project. Jenkins is a continuous integration tool which means that it creates build jobs to perform multiple different tasks in different phases.

What Is Jenkins Used For?

If all of the tests developed for a feature or release branch are green, Jenkins or another CI system may automatically publish code to staging or production. Then it’s distributed to a central what is jenkins? staging system, a pre-production system, or even a production environment when combined. Once you have Jenkins configured, it’s time to create some projects that Jenkins can build for you.

Access to where it resides, such as a VM or bare metal server, is configured to allow for the fewest number of processes to communicate with the server. This is accomplished through typical server OS and networking security features. They help extend Jenkins capabilities and integrated Jenkins with other software. Plugins can be downloaded from the online Jenkins Plugin repository and loaded using the Jenkins Web UI or CLI.

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The Pipeline incorporates various plugins that help define procedure steps from version control to the users. Jenkins is widely used in automation due to its versatility and reliability. With its robust features, Jenkins enables seamless integration, continuous delivery, and efficient testing. Its extensive plugin ecosystem and strong community support make it an essential tool for achieving automation goals effectively.

In this section of the What is Jenkins blog, we look at the internal functioning of Jenkins i.e. what happens once the developer commits changes to the repository and how CI/CD is realized in Jenkins. 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. In this blog as we try to answer ‘what is Jenkins’, we also deep dive into what is Jenkins pipeline, how does Jenkins work, and more. We would also demonstrate continuous testing with Jenkins using the Jenkins Maven project and Jenkins pipelines.

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A pipeline is a set of actions that Jenkins will take to complete the CI/CD tasks. In other words, we can say that a Jenkins pipeline is a collection of interconnected tasks that need to be accomplished in a particular order. You can use both the web interface and the command line to load and unload plugins. Using these services, you may enhance Jenkins’ functionality and make it work with other programs. The Jenkins community already has more than 1600 plugins available for usage in a variety of scenarios.

The Jenkins CI server can be run as a standalone application with a built-in Java servlet container, or as a servlet in other Java servlet containers such as Apache Tomcat. Geosley is a Test Automation Evangelist and Community builder at ACCELQ. Being passionate about continuous learning, Geosley helps ACCELQ with innovative solutions to transform test automation to be simpler, more reliable, and sustainable for the real world. Currently, Jenkins is one of the best CI/CD tools and is essential for DevOps and agile teams. For more DevOps topics, check out our list of the best DevOps tools. Therefore, a build is one run of a defined project with various steps.

Jenkins plugins

CloudBees is an active participant in the Jenkins community and plays a significant role in supporting the project. A number of key contributors to the Jenkins project are employed by CloudBees. In support of the community, CloudBees is the lead sponsor of DevOps World | Jenkins World, the annual user conference for the Jenkins community. Jenkins World enables the community to gather together, fosters a sense of community, allows users to learn from each other and supports community growth. CloudBees has also supported the growth of Jenkins Area Meetups (JAMs) around the world and recently contributed the JAMS to the CDF where they can continue to grow. Some steps can be used alongside other steps to make it easier to address issues such as retrying steps or timing out.

Jenkins, as an all-around orchestration tool, has many advantages when used for automation. In the example above, the three stages are Build, Test, and Deploy. Jenkins can be extended via its plugin architecture, providing
nearly infinite possibilities for what Jenkins can do.

What Is a Jenkins Pipeline?

Hudson became popular at Sun, and spread to other companies as open source. The Dev in the name coming from Developer and the ops coming from operations. As the name implies the DevOps field is something that bridges the gap between developer and operations teams. The Jenkins Pipeline is a user-made model for the continuous delivery pipeline.

• Jenkins security is concerned with both the server and the user.
• Enthusiastic and dedicated person in the field of Computer Science.
• While nothing is better than a great free product, sometimes there is a little bit of truth to the old adage, “you get what you pay for”.
• Being passionate about continuous learning, Geosley helps ACCELQ with innovative solutions to transform test automation to be simpler, more reliable, and sustainable for the real world.
• Now we will go ahead
  and add the key to the Jenkins repository, without this we cannot install Jenkins.
• For instance, suppose you create the jar/HTML/js file, which is crucial for deployment.
• Integration takes longer and requires testing the code against multiple system configurations.

Jenkins supports a transparent development process among team members by reducing the time it takes to review a code. In 2004, Kohsuke Kawaguchi was a Java developer at Sun Microsystems. Kawaguchi was tired of breaking builds in https://www.globalcloudteam.com/ his development work and wanted to find a way to know, before committing code to the repository, whether the code was going to work. So Kawaguchi built an automation server in and for Java to make that possible, called Hudson.

What is Jenkins? How It Works, Top Features, Pros and Cons

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. Jenkins is one of the top DevOps tools because it is free, open-source and modular, and can integrate with pretty much every other DevOps tool out there.