NodeJS-Todo-List-App 📌

Project Overview.

• Deploy a Node.js application to manage our todo list.
• Implement a CI/CD pipeline using Jenkins, Docker, GitHub Webhooks, and Docker Hub.
• Provision Jenkins server and Docker agent on AWS cloud.

Project Description.

1- Provisioning Instances on AWS Cloud

• Initially, we provisioned two instances on AWS, one for running Jenkins and another for Docker.
• We utilized the userdata option to execute a script during system boot. This script installed OpenJDK 17 and set up the Jenkins server on the first instance. Similarly, we installed Docker on the second instance.
• Security groups were configured to allow specific ports: 8080 (Jenkins server), 50000 (Jenkins agent), and 8000 (our application).

2- Configuring Jenkins Server

• After provisioning, we established webhooks between GitHub and Jenkins to trigger our pipeline on every push or commit change on the main branch.
• Additionally, we added our Docker server as an agent in Jenkins. To ensure connectivity, we allowed the “security -> agents -> tcp” option.

3- Configuring the Pipeline

Our Jenkinsfile consists of four stages:

• Code Stage: Ensures that our Jenkins server reacts to events on the main branch of our repository.
• Build and Test stage: Establishes our build process using a Dockerfile to create our image.
• Login and Push: Logs in to Docker Hub and pushes our image with a specific tag.
• Deploy: Runs our application using an HTTP URL.