End-to-End DevOps Project on AWS with CI/CD Pipeline

This is a simple Node.js web application that responds with "Hello World" when accessed.

Project Overview

• In this project, we use Amazon Web Services (AWS) as our cloud provider to deploy a containerized application in a scalable and automated environment.

• We leverage Terraform to implement Infrastructure as Code (IaC) for provisioning AWS resources such as the VPC, EKS cluster, and S3 backend for state management.

• The application is deployed on Amazon EKS (Elastic Kubernetes Service) using Kubernetes Deployment and Service resources to achieve features like auto-healing, scalability, and internet connectivity through a load balancer.

• For continuous deployment, we integrate Argo CD, which automatically synchronizes and deploys the latest changes from the source code repository to the EKS cluster. This ensures seamless, zero-downtime deployments and maintains the desired state of the application in production.

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Project Architecture

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Project Structure

hello-world-node-app/
├── .github/
│   └── workflows/                  # (GitHub Actions workflow files)
│
├── Kubernetes/                     # (K8s manifests for ArgoCD deployments)
│   ├── deployment.yaml
│   └── service.yaml
│
├── src/
│   └── app.js                      # (Node.js application source)
│
├── Terraform/                      # (Infrastructure as Code)
│   ├── Backend/                    # (Terraform backend configuration)
│   │   └── s3_backend.tf           # (S3 backend config for state storage)
│   │
│   ├── Modules/                    # (Reusable modules)
│   │   ├── EKS/                    # (EKS cluster setup)
│   │   └── VPC/                    # (VPC networking setup)
│   │
│   ├── main.tf                     # (Main Terraform configuration)
│   ├── output.tf                   # (Outputs for VPC, EKS, etc.)
│   └── variable.tf                 # (Input variables)
│
├── Dockerfile                      # (Build instructions for Node.js app)
├── package.json                    # (App dependencies and scripts)
└── README.md                       # (Optional — add documentation)

🧱 Project Components

👉 Note: follow the readme.md file of each components to run the project.

🚀 Terraform (Infrastructure as Code)

Automates provisioning of:

• VPC, subnets, internet gateway
• EKS Cluster
• S3 bucket for state management

📄 Terraform README →

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🐳 Docker set up

• Runs the project locally
• Helps test the application before deploying.

📄 Docker README →

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☸️ Kubernetes (Container Orchestration)

• Deployments, Services and LoadBalancer services.
• Ec2 as a bastion host connecting to EKS setup.
• Manifests are automatically updated by GitHub Actions.

📄 Kubernetes README →

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🚀 ArgoCD (GitOps Continuous Deployment)

• Auto-syncs Kubernetes manifests from GitHub.
• Deploys the app to the EKS cluster continuously.

📄 ArgoCD README →

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🛠️ GitHub Actions (CI/CD)

Defines the pipeline with:

• Code checkout
• Build & push Docker images
• Kubernetes manifest updates

📄 Github Actions README →

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👨‍💻 Author

Nandkishor Khandare
Cloud & DevOps / SRE Engineer

📬 Contact:

LinkedIn | Email