What Is Jenkins? Key Concepts, Architecture & Pros Cons

Its architecture, technology and pipeline language are completely different from Jenkins. Jenkins X is designed for Kubernetes and uses it in its own implementation. Other cloud native technology that Jenkins X uses are Helm and Tekton.

jenkins build server

The Webhook is now ready to receive notifications from the Jenkins server when a build runs and is complete. In the Webhooks page, select the Webhook and click the Test button to test whether the configuration is correct. Click the Build tab at the top of the page and configure the POM file path and the Maven goals. Open the Jenkins Dashboard page and click create new jobs to create a job. So far around 280 tickets are closed, and the project publishes stable release every three months.

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Prefix works with .NET, Java, PHP, Node.js, Ruby, and Python. We advise using the «declarative» syntax of Jenkinsfile, as it’s just simpler. As you can see, each build can use a different FPC version, if you want to.

jenkins build server

(Or, put it in an Easter Egg if you don’t want it visible to users.) The way you obtain the version, specifically, will depend greatly on the language of your app and the platform you use to run it. Also note that Jenkins has its own “pipeline” concept (formerly known as “workflows”) that are for long-running, complicated build tasks spanning multiple build slaves. This article strives to keep things as simple as possible using backwards-compatible freestyle jobs. The idea is to use the power and simplicity of Git rather than introduce complexity from – and coupling to – Jenkins. As a simple tool operated from the command-line, it nicely works as part of Jenkins job execution.

Configure the GitLab project

Jenkins can be extended via its plugin architecture, providing nearly infinite possibilities for what Jenkins can do.

  • Around 2007 Hudson became known as a better alternative to Cruise Control and other open-source build-servers.
  • A build agent (or “slave”) is simply another computer that Jenkins can use to run some of its builds.
  • A good name has to be unique to Jenkins, but also describes quickly what task it is doing on which project.
  • We’ve already seen that Jenkins supports building with Maven; it also works with Ant, Gradle, JUnit, Nexus, and Artifactory.
  • Next, the file defines two stages, i.e., logical divisions of work.

Jenkins can operate on Windows, macOS, many Unix distributions, and Linux. You can use the Oracle JRE or OpenJDK if you have a Java 8 virtual machine. A Jetty application server often hosts Jenkins as a Java servlet. Not only that, but you can also use the Apache Tomcat Java application server. In recent years, Jenkins has been able to operate in a Docker container. However, there are read-only Jenkins images found in the Docker Hub repository.

Setting up Jenkins

Then provide the URL and the required credentials to create a pipeline from one repository or scan all company repositories. 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 https://globalcloudteam.com/ 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.

Email is Jenkins’s more fundamental notification technique—when a build fails, it will send an email message to the developer who committed the changes, and optionally to other team members as well. So Jenkins needs to know about your email server (see Figure 4-10). Jenkins comes preinstalled with plugins for CVS and Subversion. Other version control systems are supported by plugins that you can download from the Manage Plugins screen.

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For instance, suppose you create the jar/HTML/js file, which is crucial for deployment. While it is easy to install , production Jenkins can be difficult to implement. Developing production pipelines using Jenkinsfiles requires coding in either its declarative or scripting language. Complex pipelines, especially, can be difficult to code, debug and maintain. Jenkins has been around much longer than other solutions in this space. This, plus its flexibility, has led to it being widely deployed.

On self-managed GitLab instances, you can fix this issue by increasing the webhook timeout value. Configure the Jenkins project, including the ‘Publish build status to GitLab’ post-build action. You might get the Could not what is jenkins connect to the CI server error if GitLab did not receive a build status update from Jenkins via the Commit Status API. The Jenkins instance is at a local address and is not included in theGitLab installation’s allowlist.

Building a Continuous Delivery Pipeline with Git & Jenkins

While the dev and prod environments are clearly linked to a Git branch, you might be wondering about the QA environment, which is less clear. While I personally prefer continuous deployments that release features as soon as they’re ready, this isn’t always feasible due to business reasons. For the purpose of the example we’ll explore here, consider a typical team of 3-8 regular code contributors working in a single Git repository. If you have more than 8 developers on one project, you may want to consider breaking the application into smaller, responsibility-driven repositories.

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