Continuous Integration (CI) and Continuous Delivery (CD) are two software development practices that work together to improve the speed and quality of software delivery.

CI is the practice of automating the process of building, testing, and deploying code changes. This ensures that every change to the code is tested and deployed quickly and reliably.

CD is the practice of automating the process of delivering software to production. This ensures that software can be released to users quickly and easily, without the need for manual intervention.

By implementing CI/CD, teams can release software more frequently with fewer errors. This can lead to a number of benefits, including:

  • Increased customer satisfaction
  • Reduced development costs
  • Improved time to market
  • Increased developer productivity

What is Jenkins?

Jenkins is an open source automation server that can be used to automate CI/CD pipelines. It is a popular choice for CI/CD because it is easy to use, extensible, and has a large community of users and contributors.

Jenkins can be used to automate a wide variety of tasks, including:

  • Building and testing code
  • Deploying code to production
  • Provisioning infrastructure
  • Monitoring applications

Building CI/CD Pipeline with Jenkins

To build a CI/CD pipeline with Jenkins, you will need to:

  1. Install Jenkins
  2. Configure Jenkins to connect to your source control repository
  3. Create a Jenkins job that defines the steps in your CI/CD pipeline
  4. Configure a webhook in your source control repository to trigger the Jenkins job when new code is pushed
  5. Execute the Jenkins job

Prerequisites

Before you can build a CI/CD pipeline with Jenkins, you will need to:

  • Install Jenkins
  • Install the Jenkins Git plugin
  • Install the Jenkins GitHub integration plugin
  • Configure Jenkins to connect to your source control repository

Creating a Jenkins CI/CD Pipeline

Once you have installed Jenkins and configured it to connect to your source control repository, you can create a Jenkins job that defines the steps in your CI/CD pipeline.

A Jenkins job is a unit of work that can be automated. It can be used to build, test, deploy, or perform any other task that you want to automate.

To create a Jenkins job, you will need to:

  1. Go to the Jenkins dashboard
  2. Click on “New Item”
  3. Select “Pipeline”
  4. Give your job a name
  5. Select “Git” as the SCM
  6. Enter the URL of your source control repository
  7. Click on “Save”

Your Jenkins job will now be created. You can edit the job to add steps to your CI/CD pipeline.

Configuring a Webhook in GitHub

A webhook is a way to send notifications from one application to another. In the context of CI/CD, a webhook can be used to trigger a Jenkins job when new code is pushed to a GitHub repository.

To configure a webhook in GitHub, you will need to:

  1. Go to the settings page for your GitHub repository
  2. Click on “Webhooks”
  3. Click on “Add webhook”
  4. Enter the URL of your Jenkins job
  5. Select the events that you want to trigger the webhook
  6. Click on “Create webhook”

Your webhook will now be configured. When new code is pushed to your GitHub repository, the webhook will be triggered and the Jenkins job will be executed.

Executing the Jenkins CI/CD Pipeline Job

Once you have created a Jenkins job and configured a webhook in GitHub, you can execute the Jenkins job by pushing new code to your GitHub repository.

When you push new code to your GitHub repository, the webhook will be triggered and the Jenkins job will be executed. The Jenkins job will build, test, and deploy your code to production and notify you of the results.

Conclusion

CI/CD is a valuable practice for software development teams. It can help teams release software more frequently with fewer errors. Jenkins is a popular tool for implementing CI/CD. It is easy to use, extensible, and has a large community of users and contributors.

By following the steps in this blog post, you can learn how to build a CI/CD pipeline with Jenkins. This will help you to improve the speed and quality of your software delivery.