DevOps Certificate Generator

This project focuses on creating a streamlined solution for generating Internship Certificates from user-selected Template. It features a user-friendly React.js front end for template selections and details input, a robust GO backend for certificate generation, and a secure storage system for saving the generated codes. The application is split into decoupled components to ensure scalability and ease of deployment:

Project Architecture

Frontend (React.js): A user-friendly interface for selecting templates and inputting intern details.

Backend (Go Microservice): A high-concurrency API responsible for processing data and generating PDF/Image certificates.

Storage (AWS S3): Secure, persistent storage for generated certificates and assets.

Infrastructure: Automated provisioning and orchestration using Terraform and Kubernetes (EKS/KIND/MicroK8s).

Cloud & DevOps Practices

• Docker: Used for containerizing the front-end (React.js) and API (Go) to ensure consistent deployment across environments.

• GitHub Actions: Implements CI/CD pipelines to automate the deployment of containers when source code changes occur.

• Terraform: Manages and provisions cloud infrastructure, specifically creating a Kubernetes cluster using Infrastructure as Code (IaC).

• Kubernetes: Orchestrates the deployment and management of containerized applications, ensuring scalability and high availability.

  • KIND(Kubernetes in Docker) Deploying application to test the functionality localy using Kind Cluster.
  • AWS EKS: Deploying the application on prodcution using AWS EKS cluster.
  • K3s: Deploying the application on lightweight, single-node Kubernetes using MicroK8s for local development or edge environments.

• AWS S3: Provides secure storage for generated QR codes, allowing for persistent data storage and easy accessibility.

• Prometheus: Monitors container and system metrics, offering real-time insights for performance and operational monitoring.

• Grafana: Visualizes metrics collected from Prometheus and other sources, enhancing observability and aiding in performance monitoring and troubleshooting.

Project Workflow

End to End CI/CD Pipeline

Blue Deployment

Quick Start with Docker

This is the fastest way to get the application running on your local machine.

Prerequisites

• Docker Desktop / Docker Daemon installed on your machine
• Git (to clone the repository)

Steps to Run with Docker

1. Clone the repository

   git clone <repository-url>
   cd DevOps-Certificate-Generator

2. First-time setup

   docker compose up --build

   This command will:

   • Build all container images
   • Create necessary networks
   • Start all services
   • The frontend will be available at http://localhost:80
   • The backend API will be available at http://localhost:8081 and http://localhost:8082

3. Subsequent runs

   docker compose up

   Use this command when you haven't made any changes to the Dockerfile or dependencies.

4. Stop the application

   docker compose down

   This will stop and remove all containers, but preserve your images.

Additional Docker Commands

• To view logs of a specific service:

  docker compose logs frontend  # For frontend logs
  docker compose logs api-gateway   # For backend logs
  docker compose logs pdf-generator   # For backend logs

• To rebuild a specific service:

  docker compose up --build frontend  # Rebuild frontend only
  docker compose up --build pdf-generator   # Rebuild pdf-generator microservice only
  docker compose up --build api-gateway   # Rebuild api-gateway only

• To remove all containers and images (clean slate):

  docker compose down --rmi all