Skip to content

Multi-Tier Architecture on AWS using Terraform

Deploy a scalable and resilient multi-tier architecture on AWS using Terraform.

🚀 Project Overview

This project allows us to deploy a highly available, scalable, and secure multi-tier architecture on Amazon Web Services (AWS) using Terraform. The architecture consists of the following three tiers:

  • Web Tier: This tier handles incoming user requests and can be horizontally scaled for increased capacity. It typically includes web servers and a load balancer for distributing traffic.

  • Application Tier: Application servers run our business logic and interact with the database tier. They can also be horizontally scaled to meet demand.

  • Database Tier: The database stores and manages our application data. In this architecture, we use Amazon RDS for a managed database service.

📌 Architecture Diagram

multi-tier-architecture

🚦 Getting Started

Prerequisites

Before you get started, make sure you have the following prerequisites in place:

  • Terraform installed.
  • AWS IAM credentials configured.
  • Git for cloning the repository.

📋 Table of Contents

✨ Features

  • High Availability: The architecture is designed for fault tolerance and redundancy.
  • Scalability: Easily scale the web and application tiers to handle varying workloads.
  • Security: Security groups and network ACLs are configured to ensure a secure environment.

🌟 Web Tier

The Web Tier is the entry point for incoming user requests. It typically includes:

  • Load Balancer: Distributes traffic across multiple web servers.
  • Auto Scaling: Automatically adjusts the number of web servers based on traffic.
  • Security Groups: Controls incoming and outgoing traffic to the web servers.

Web Tier Configuration

🚀 Application Tier

The Application Tier hosts the application servers responsible for running business logic and interacting with the database tier. Key components include:

  • Application Servers: These run your application code and can be horizontally scaled.
  • Load Balancer: Distributes traffic to the application servers.
  • Auto Scaling: Automatically adjusts the number of web servers based on traffic.
  • Security Groups: Controls incoming and outgoing traffic to the application servers.

Application Tier Configuration

💽 Database Tier

The Database Tier stores and manages our application data. We use Amazon RDS for a managed database service. Key components include:

  • Amazon RDS: A managed database service for MySQL/PostgreSQL/SQL Server databases.
  • Security Groups: Control incoming and outgoing traffic to the database.

Database Tier Configuration

🔧 Terraform Configuration

The Terraform configuration for this project is organized into different and resources to create the necessary AWS infrastructure components. Key resources include:

  • Virtual Private Cloud (VPC)
  • Subnets and Route Tables
  • Security Groups and Network ACLs
  • Load Balancers
  • Auto Scaling Groups
  • RDS Database Instances

🚀 Deployment

Follow these steps to deploy the architecture:

  1. Clone the repository:

bash git clone https://github.com/mathesh-me/multi-tier-architecture-using-terraform.git

  1. Make changes as per your needs.
  2. Initialize Terraform and apply the configuration: terraform init
  3. Review the changes and confirm.

💼 Usage

Scaling

  • To scale the Web or Application Tier, use Auto Scaling configurations provided in the respective Terraform files. Adjust the desired capacity to match your scaling requirements.

Database Management

  • Access the Amazon RDS instance in the Database Tier to manage your data.

Load Balancing

  • Configure the load balancer in the Web and Application Tiers to distribute traffic evenly.

Security Considerations

  • Review and customize the security groups and network ACLs to meet your specific security requirements.

🤝 Contributing

Contributions are Welcome! Please read my Contributing Guidelines to get started with contributing to this project.

📄 License

This project is licensed under the MIT License.