jenkinsci/jenkins

Analysis updated 2026-06-21

★ 25,250JavaAudience · ops devopsComplexity · 4/5Setup · hard

Mindmap

mindmap
  root((Jenkins))
    What it does
      Automates builds
      Runs tests
      Deploys software
    Key concepts
      CI CD pipeline
      Plugins 2000 plus
      Jenkinsfile
    Use cases
      Pull request checks
      Nightly builds
      Docker deployments
    Setup options
      Docker container
      WAR file
      Linux installer
    Audience
      DevOps teams
      Software engineers

mindmap root((Jenkins)) What it does Automates builds Runs tests Deploys software Key concepts CI CD pipeline Plugins 2000 plus Jenkinsfile Use cases Pull request checks Nightly builds Docker deployments Setup options Docker container WAR file Linux installer Audience DevOps teams Software engineers

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What do people build with it?

USE CASE 1

Automatically run tests every time a developer pushes code and alert the team immediately if something breaks.

USE CASE 2

Set up a pipeline that builds a Docker image, runs integration tests, and deploys to staging on every merge to main.

USE CASE 3

Schedule nightly builds of a large Java project and email the team a summary of failures.

USE CASE 4

Connect Jenkins to GitHub to block pull request merges until all CI checks pass.

What is it built with?

Java

How does it compare?

	jenkinsci/jenkins	scwang90/smartrefreshlayout	bazelbuild/bazel
Stars	25,250	25,160	25,359
Language	Java	Java	Java
Setup difficulty	hard	easy	hard
Complexity	4/5	2/5	4/5
Audience	ops devops	developer	ops devops

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · hard Time to first run · 1h+

Requires a Java runtime, initial server setup, and plugin configuration before the first pipeline runs.

In plain English

Jenkins is a widely-used open-source automation server written in Java. The problem it solves is the repetitive, error-prone manual work involved in building, testing, and deploying software. Every time a developer saves code, someone (or something) needs to compile it, run the tests, check for issues, and if everything passes, put it on a server. Jenkins automates that entire chain, which is commonly called a CI/CD pipeline (Continuous Integration and Continuous Delivery). Jenkins watches a code repository for changes, then automatically triggers a sequence of steps: compiling the code, running automated tests, scanning for common mistakes, and deploying the result. If any step fails, it alerts the team immediately rather than letting problems accumulate. Jenkins supports over 2,000 plugins, which are add-ons that let it work with virtually any tool, programming language, or cloud platform. You would use Jenkins if your team ships software frequently and wants every code change validated automatically before it reaches users. It can run as a WAR file (a packaged Java application), a Docker container, or an installer on Linux or Windows. Teams of all sizes use it, from startups to enterprises handling large-scale deployments. The two release tracks are a weekly release for the latest features and a Long-Term Support release for teams that prioritize stability.

Copy-paste prompts

Prompt 1

Write a Jenkins Declarative Pipeline Jenkinsfile that checks out a Node.js app, runs npm test, and deploys to a staging server on success.

Prompt 2

Show me how to configure a Jenkins multibranch pipeline for a GitHub repo so each branch gets its own automatic build.

Prompt 3

How do I set up Jenkins to send a Slack notification when a build fails, including the relevant error output?

Prompt 4

Write a Jenkins pipeline that builds a Docker image, pushes it to Docker Hub, and deploys it to a Kubernetes cluster.

Prompt 5

How do I install the Blue Ocean plugin in Jenkins to get a modern visual view of my pipeline runs?

Frequently asked questions

What is jenkins?

Jenkins is an open-source automation server that watches your code repository and automatically builds, tests, and deploys software on every change, eliminating manual and error-prone release steps.

What language is jenkins written in?

Mainly Java. The stack also includes Java.

How hard is jenkins to set up?

Setup difficulty is rated hard, with roughly 1h+ to a first successful run.

Who is jenkins for?

Mainly ops devops.

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