Automating CI CD and GitOps with Jenkins

Jenkins runs as a server on a variety of platforms including Windows, MacOS, Unix variants and especially, Linux. It requires a Java 8 VM and above and can be run on the Oracle JRE or OpenJDK. Usually, Jenkins runs as a Java servlet within a Jetty application server. It can be run on other Java application servers such as Apache Tomcat. More recently, Jenkins has been adapted to run in a Docker container. There are read-only Jenkins images available in the Docker Hub online repository.

Carbon is an experimental programming language built to stand on the shoulders of C++ — but with a new outlook on memory safety,… 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.

Jenkins pipeline agent

Follow the contributing guidelines if you want to propose a change in the Jenkins core. For more information about participating in the community and contributing to the Jenkins project, see this page. You can implement a serverless installation without a Master, which consumes excessive resources.

jenkins development

GitOps has a lot to offer developers who want to automate their deployment processes using scripts that are stored as a single source of truth in a version control management system. Such control and reliability are compelling reasons to make the move. It has all the features that are required for implementing a viable GitOps-focused deployment process. For companies already using Jenkins, making the leap to GitOps using a Jenkinsfile is much easier than starting from scratch. And for companies not yet using Jenkins, the learning curve is acceptable.

Jenkins Core Concepts

A pipeline is a set of steps the Jenkins server will execute to complete the CI/CD process’s necessary tasks. In the context of Jenkins, a pipeline refers to a collection of jobs connected in a specific order. It is a collection of plugins that allow the creation and integration of Continuous Delivery pipelines in Jenkins. DevOps engineersto integrate changes to the project and for consumers to get a new build. It also enables you to release your software continuously by interacting with various testing and deployment methods. Jenkins is a widely used application around the world that has around 300k installations and growing day by day.

jenkins development

Have a good understanding of programming languages, operating systems, and databases. I have good communication skills and interested in staying updated with technology and learning new things. Jenkins ensures automated integration work where integration issues are minimized. Let us know see how the syntax of Scripted and declarative pipelines differ. Groovy is a programming language based on the Java Virtual Machine.

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Jenkins does have official documentation for setting up the environment — Check this. I have used Ubuntu 16.04 for this environment, but the steps remain identical for other flavors. The only difference will be in the commands used for each operating system. Nowadays, the Jenkins community reports that there are around 1,500 plugins available for a variety of applications. A major Jenkins use case is its interoperability with Slack.

jenkins development

This allows pipelines to take advantage of the distributed architecture of Kubernetes to easily scale both on the number of running workflows and within each workflow itself. You can create pipelines directly in the user interface, or create a “Jenkinsfile” which represents a pipeline as code. Jenkinsfiles use a Groovy-compatible text-based format to define pipeline processes, and can be either declarative or scripted.

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The Android emulator plugin allows you to build and test on as many emulated devices as you care to define. The Google Play Publisher plugin lets you send builds to an alpha channel in Google Play for release or further testing on actual devices. Jenkins relies on older Java architectures and technology, specifically servlets and Maven. Even the Jenkins Docker installation still requires that the Jenkins code and servlet middleware be packaged into a container together, maintaining its monolithic architecture. In addition, it is not designed to be implemented using newer Java technology such as Spring Boot or GraalVM. The Jenkins X project was formerly launched in 2018 with the goal of creating a modern, cloud native Jenkins.

  • In 2011, the Hudson community unanimously accepted a referendum to alter the project name from Hudson to Jenkins, resulting in the creation of the first “Jenkins” project.
  • 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.
  • This DataBoundConstructor annotation tells Jenkins to bind the value of jelly fields.
  • The value of this variable is then not fixed for the test run.
  • This is done from within the Jenkins UI, as described in the next section.
  • Other plugins can specify different branches, such as a Git branch, a Subversion branch, a GitHub Pull Request, and so on.

The declarative pipeline is relatively new, so there are limitations on the size of code within the pipeline block. The Jenkins declarative pipeline was recently added to the Jenkins pipeline. what is jenkins It follows a very simple syntax on top of the Pipeline sub-systems. Jenkins pipelines are robust and pipelines will be secure even if the server undergoes an unpredicted restart.


ManekTech has a skilled team of Jenkins app testers that work hard to provide test automation services. We are well-known as one of the best robotic process automation businesses, providing excellent Jenkins solutions. We use Jenkins to provide organizations with low-cost, high-quality solutions.