Pipeline_Example.md

Step 1: Create a New Pipeline Job in Jenkins

1. Go to Jenkins Dashboard.

2. Create a New Job:

   • Click New Item.
   • Enter a name for your pipeline (e.g., GroovyPipelineFromGitHub).
   • Select Pipeline as the job type and click OK.

3. Configure the Pipeline Job:

   • In the configuration page, scroll down to the Pipeline section.
   • Set Definition to Pipeline script from SCM (Source Control Management).
   • Set SCM to Git.
   • In the Repository URL, enter the URL of your GitHub repository (e.g., https://github.com/<your-username>/jenkins-pipeline-demo.git).

4. Credentials:

   • If your repository is private, add your GitHub credentials by clicking Add → Jenkins, then enter your GitHub username and password or token.

5. Branch:

   • By default, Jenkins uses the master branch. You can specify another branch if needed.

6. Script Path:

   • Ensure that the Script Path is set to Jenkinsfile (if your file is named something else, specify that here).

7. Save the Job.

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Step 2: Build the Pipeline

1. Run the Job:

   • On the job's page, click Build Now to trigger the pipeline.

2. Check Build Progress:

   • You will see the build in the Build History section on the left.
   • Click the build number to view the progress and output.

3. Console Output:

   • Check the Console Output to see each stage of the pipeline as it executes:
     • Apache (httpd) installation.
     • Status check.
     • Success message indicating the website is live.

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Step 3: Modify the Pipeline

1. Update Jenkinsfile in GitHub:

   • You can modify the Jenkinsfile in your GitHub repository to add more stages, steps, or logic.

2. Trigger the Job Automatically:

   • To automatically trigger the Jenkins job when you push changes to GitHub, you can configure a Webhook in GitHub under Settings → Webhooks.

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