How to Integrate Git with Jenkins?

Follow the steps below to integrate Git with Jenkins:

1. Install necessary plugins:

   • In Jenkins, ensure that the 'Git plugin' is installed. This plugin enables Jenkins to interact with Git repositories. You can search for and install it in Jenkins' Manage Plugins section.

2. Configure system settings:

   • In Jenkins' system configuration (or global tool configuration), set the path to Git. This is typically configured under 'Global Tool Configuration'.

3. Create a new job or project:

   • Create a new Freestyle or Pipeline job in Jenkins.

4. Configure source code management:

   • In the project configuration, select 'Source Code Management', then choose 'Git'.
   • Enter the URL of your Git repository. If the repository is private, you must configure credentials (username and password or private key).

5. Configure build triggers:

   • Set how to trigger builds. Common triggering methods include:
     • Poll SCM: Jenkins periodically checks for changes in the Git repository.
     • Trigger via Webhook: Set up a webhook in the Git repository; whenever a push operation occurs, the webhook notifies Jenkins to initiate a build. To do this, configure the webhook in your Git hosting service (e.g., GitHub, GitLab) and point it to your Jenkins server.

6. Configure build scripts:

   • Configure build steps based on project requirements. For example, add a shell script execution step in a Freestyle project, or write a Jenkinsfile in a Pipeline project.

7. Save and test the configuration:

   • After saving the configuration, you can manually trigger a build or trigger it via Git operations to test if the integration is successful.

By following these steps, you can effectively integrate Git with Jenkins, enabling automatic builds and tests upon code updates, thereby improving the efficiency and quality of software development.