3 Tier Deployment
K8s deployment of Web App
This project demonstrates the deployment of a scalable and modular three-tier web application using Docker, Kubernetes, and CI/CD automation. The architecture follows a structured separation of concerns, ensuring that the frontend, backend, and database layers are independently scalable and maintainable.
Prerequisites
Linux and basic commands.
General knowledge of the cloud, containerization and the AWS foundations EC2, ECR. (No issues if you are new to it, you will learn in the way. You got this Champ!)
What is 3-tier Architecture ?
A three-tier architecture divides an application into three independent layers, improving scalability, security, and maintainability.
Presentation Layer (Frontend)
Handles user interface and interactions.
Built with technologies like React.js, Angular, or Vue.js.
Application Layer (Backend)
Manages business logic and API requests.
Developed using Node.js, Django, Flask, or Spring Boot.
Data Layer (Database)
Stores and retrieves application data.
Uses databases like MySQL, PostgreSQL, or MongoDB.
Each layer runs independently, allowing for modular development, better security, and easier scaling in cloud-native environments. 🚀
Deployment Architecture
The diagram above represents the three-tier deployment architecture for a web application using Docker, Kubernetes, and AWS ECR. The frontend, built with React.js, is containerized and deployed as a Kubernetes pod, making it highly scalable and accessible via an Ingress Controller. The backend, developed in Node.js, handles API requests and business logic, running in its own Kubernetes pod while securely communicating with the database. The database layer utilizes MongoDB, deployed as a stateful Kubernetes service for persistent data storage. Docker images for each tier are stored in AWS ECR, ensuring a seamless CI/CD pipeline. The Ingress Controller routes external traffic to the application through a Load Balancer, ensuring reliability, scalability, and security for end users.
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