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Jenkins in a Nutshell

Hi All, we have heard a lot about CI/CD tools and must have read different articles about it. Today, let’s try to learn about it in a very simple manner. This article will cover the overview, features and few use cases of Jenkins.

Quick Overview:

Jenkins is one of the leading open-source automation server which provides hundreds of plugins to support building, deploying and automating any project which in turns helps in continuous integration and build automation. The basic functionality of Jenkins is to execute a predefined list of tasks i.e. as soon as there is a change in repository, triggers a pipeline that executes different jobs and performs the tasks.

Every phase is monitored, and a notification will be triggered to the user if anything breaks. Even you have the privilege to stop the entire process in between. This process will be helpful for a large project where multiple teamwork on the same code without knowing what changes their colleagues are making due to which we get errors and bug when the codes are integrated into the branch. Here comes the role of Jenkins which detects the bug after every commit and notify the developers of the issue.

Jenkins can be installed through https://jenkins.io/ or via any native system package, Docker, just a prerequisite is that Java should be installed on the machine.

 

Features of Jenkins:

  1. Continuous Integration & Continuous Delivery – As an extensible automation server, Jenkins can be used as a simple CI server or turned into the continuous delivery hub for any project.
  2. Easy Installation – Jenkins is a self-contained Java-based program, ready to run out-of-the-box, with packages for Windows, Mac, and other Unix operating systems.
  3. Easy Configuration – Jenkins can be easily set up and configured via its web interface.
  4. Plugins – Hundreds of plugins are available in its marketplace to easily integrate Jenkins with any tool.
  5. Extensible – It can be extended via its plugin architecture, providing nearly infinite possibilities for what Jenkins can do.
  6. Distributed – It can be easily distributed across multiple machines, helping drive builds, tests and deployments across multiple platforms faster.

 

Jenkins Use Cases:

Continuous Integration – It is a practice that forces developers to integrate their code into a central repository. Instead of building out new features to the end without any quality checks, each change is tested at the central repo in order to identify the errors. With this process, as soon as the developer commits the code, it triggers a Jenkins automated job to build and test the application. If it fails, the developer will be notified immediately and fix the code without compromising the whole project or workflow.

Continuous Delivery – It is the process where you can bring all the changes such as new features, configuration changes, error fixes or moving the code into production in a safe and efficient manner. Its main aim is to make deployments successful and as a routine activity.

With the introduction of Jenkins Pipeline, it helps in building complex delivery with Pipeline features user-friendly declarative syntax for pipeline modeling and ephemeral build agents.

Continuous Deployment – It is also known as continuous implementation i.e. once the deployment is completed there will be automated testing implemented at the production server level. Sometimes, it’s difficult to automate each and every test hence we use different orchestration methodologies such as Kubernetes which allow new versions to slowly deployed to users until the entire application is rolled out.

Java – Jenkins support Java and the best part is that the tool itself is written in Java language, hence it provides a bunch of different options. The most typical ones nowadays are Apache Maven or Gradle.

Docker – Combining Jenkins and Docker together can bring improved speed and consistency to your automation tasks.

There are a lot of use cases where Jenkins can fit in. Keep visiting our site for more use cases…

Conclusion:

Integrated solutions are important steps for delivery. There are a lot of other options available in the market for CI/CD such as GitLab CI/CD, Bamboo CI, Circle CI but Jenkins having one of the oldest open-source automation tools and extremely reliable is great for CI/CD or build automation.

Keep Visiting our site, for more blogs on Jenkins. Please feel free to write at contact@beingdatum.com for any queries or questions.

January 15, 2020

3 responses on "Jenkins in a Nutshell"

  1. Great Article

  2. I really wanted an overview of Jenkins and this article provided it so well and so concisely.

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