Project Overview

Multi-Environment AWS Infrastructure with Terraform Modules

This project demonstrates advanced Infrastructure as Code (IaC) practices using Terraform modules to create and manage multiple environments (Development, Production, and Test) with consistent infrastructure patterns but environment-specific configurations.

Environment Strategy:

  • Development Environment: Lightweight setup for development and testing
  • Production Environment: High-availability setup with redundancy and scaling
  • Test Environment: Isolated environment for integration and performance testing

Key Features:

  • Modular Architecture: Reusable Terraform modules for consistent infrastructure
  • Environment-Specific Configuration: Customizable parameters for each environment
  • Resource Optimization: Cost-effective resource allocation per environment
  • Security Best Practices: Environment-specific security groups and access controls
  • Scalable Design: Easy to add new environments or modify existing ones
  • State Management: Proper Terraform state management and backend configuration

Infrastructure Components

Compute Resources

EC2 instances with environment-specific configurations, auto-scaling groups, and load balancers

Database Layer

RDS MySQL instances with automated backups, multi-AZ deployment for production

Storage Solutions

S3 buckets for object storage with environment-specific naming and access policies

Environment Configurations

DevelopmentCost-Optimized

  • 1 public t2.micro instance
  • 1 S3 bucket
  • 1 RDS instance (db.t3.micro)
  • Public subnet only

ProductionHigh-Availability

  • 1 public + 2 private instances
  • 2 S3 buckets
  • 2 RDS instances (Multi-AZ)
  • Public and private subnets

TestIsolated Testing

  • 1 public + 1 private instance
  • 1 S3 bucket
  • 1 RDS instance
  • Separate VPC for isolation

Technical Implementation

Module Structure:

  • main.tf: Environment definitions and module calls
  • mymodule/: Reusable infrastructure components
  • ec2.tf: EC2 instances and security groups
  • s3.tf: S3 bucket configurations
  • rds.tf: Database instance setup
  • vpc.tf: Network infrastructure
  • var.tf: Variable definitions

Key Benefits:

  • Consistency: Same infrastructure pattern across environments
  • Maintainability: Single module to update all environments
  • Cost Control: Environment-specific resource sizing
  • Security: Isolated networks and access controls
  • Scalability: Easy to add new environments
  • Version Control: Infrastructure changes tracked in Git

Networking Architecture:

  • VPC: Isolated virtual private cloud for each environment
  • Public Subnets: For resources requiring internet access
  • Private Subnets: For backend services and databases
  • Route Tables: Proper traffic routing and security
  • Security Groups: Firewall rules for SSH, HTTP, HTTPS, and database access

Security Implementation:

  • Environment-specific security groups
  • SSH key pair management
  • Database encryption at rest
  • VPC flow logs for monitoring
  • IAM roles and policies
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