Comprehensive Guide to Jenkins Multibranch Pipeline for CI/CD

This article provides a complete tutorial on using Jenkins multibranch pipelines to automate CI/CD workflows based on Git branches and pull requests. It starts with an overview of multibranch pipelines, explaining how they automatically discover new branches in SCM repositories such as GitHub, Bitbucket, or GitLab and create pipelines using a Jenkinsfile.

The guide describes how to configure conditional logic in the Jenkinsfile to run specific stages (e.g., unit tests, Sonar analysis) for feature branches while skipping deployment, and how PR‑based branch discovery can trigger builds only when a pull request is opened.

It includes a full Jenkinsfile example that defines agent settings, cleanup, checkout, testing, code analysis, and conditional build/deploy stages. The code is presented unchanged within a pipeline { ... } block.

Step‑by‑step instructions show how to create a new multibranch pipeline project in Jenkins, add a GitHub source, configure credentials, select branch discovery options (including regex or wildcard filters), set the script path, and enable log rotation. Screenshots illustrate each UI action.

The article also covers configuring a GitHub webhook to send events to Jenkins, selecting payload URL, content type, and event filters (e.g., PR events only). It explains how to verify webhook delivery and troubleshoot failures using Jenkins system logs.

Testing instructions demonstrate how to trigger the pipeline by creating a PR from a feature branch, observing the build status on GitHub, and reviewing the Blue Ocean visualization of pipeline stages, including skipped deployment for non‑development branches.

Finally, common troubleshooting scenarios are discussed, such as branch discovery issues and webhook failures, with recommendations to manually scan the repository, check webhook delivery status, and review Jenkins logs.