🚀 Terraform AWS Modular Infrastructure

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🌟 Project Overview

This project demonstrates a production-ready Infrastructure as Code (IaC) setup using Terraform on AWS. It uses a modular architecture to provision and manage:

• 👤 IAM (Users, Groups, Policies)
• 🌐 VPC (Networking, Subnets, Gateway)
• 💻 EC2 (Compute Instances)

With fully separated:

• 🧪 Development Environment
• 🚀 Production Environment

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🎯 Objective

✔ Build reusable Terraform modules

✔ Implement secure IAM structure

✔ Design scalable VPC architecture

✔ Deploy EC2 instances using variables

✔ Maintain separate Dev & Prod environments

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🏗️ Architecture

🔍 Architecture Highlights

• Terraform acts as the orchestrator
• AWS is the cloud provider
• Modules ensure reusability & scalability
• Separate environments ensure isolation

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📁 Project Structure

terraform-infra/
│
├── modules/                         # Reusable Terraform modules
│   │
│   ├── iam/                         # IAM Module (users, groups, policies)
│   │   ├── main.tf                  # Creates IAM users, group, attachments
│   │   ├── variables.tf             # Inputs: user_names, group_name, policies
│   │   └── outputs.tf               # Outputs: user info, credentials
│   │
│   ├── vpc/                         # VPC Module (network infrastructure)
│   │   ├── main.tf                  # Uses Terraform AWS VPC module
│   │   ├── variables.tf             # Inputs: CIDR, subnets, AZs
│   │   └── outputs.tf               # Outputs: vpc_id, subnet details
│   │
│   └── ec2/                         # EC2 Module (compute resources)
│       ├── main.tf                  # Launch EC2 instance
│       ├── variables.tf             # Inputs: AMI, instance type, subnet
│       └── outputs.tf               # Outputs: instance_id
│
├── development/                     # Development Environment
│   ├── main.tf                      # Calls IAM, VPC, EC2 modules
│   ├── variables.tf                 # Dev-specific configurations
│   └── outputs.tf                   # Final outputs (dev)
│
├── production/                      # Production Environment
│   ├── main.tf                      # Calls IAM, VPC, EC2 modules
│   ├── variables.tf                 # Prod-specific configurations
│   └── outputs.tf                   # Final outputs (prod)
│
├── README.md                        # Project documentation
└── LICENSE                          # License file

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⚙️ Tech Stack

Tool	Purpose
Terraform	Infrastructure as Code
AWS	Cloud Provider
Git	Version Control
GitHub	Code Hosting

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📦 Modules Breakdown

👤 IAM Module

• Creates IAM Users
• Manages Groups
• Attaches Policies
• Generates Login Profiles

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🌐 VPC Module

• Creates VPC
• Public & Private Subnets
• Internet Gateway
• Multi-AZ support

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💻 EC2 Module

• Launches EC2 instance
• Configurable AMI
• Instance Type selection
• Subnet-based deployment

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🌍 Environments

Environment	Purpose
🧪 Development	Testing & experimentation
🚀 Production	Live deployment

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🔄 Workflow

Start
  │
  ▼
Write Terraform Code (Modules + Environments)
  │
  ▼
Initialize Terraform (terraform init)
  │
  ▼
Validate Configuration (terraform validate)
  │
  ▼
Generate Execution Plan (terraform plan)
  │
  ▼
Apply Infrastructure (terraform apply)
  │
  ▼
Resources Created in AWS
  │
  ▼
Verify Resources (IAM, VPC, EC2)
  │
  ▼
Destroy Infrastructure (terraform destroy)
  │
  ▼
 End

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🚀 Getting Started

🔹 Initialize

terraform init

🔹 Validate

terraform validate

🔹 Plan

terraform plan -var="aws_region=us-east-1" -var="aws_access_key=YOUR_ACCESS_KEY" -var="aws_secret_key=YOUR_SECRET_KEY"

🔹 Apply

terraform apply -var="aws_region=us-east-1" -var="aws_access_key=YOUR_ACCESS_KEY" -var="aws_secret_key=YOUR_SECRET_KEY"

🔹 Destroy

terraform destroy -var="aws_region=us-east-1" -var="aws_access_key=YOUR_ACCESS_KEY" -var="aws_secret_key=YOUR_SECRET_KEY"

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📊 Outputs

✔ IAM User Credentials

1.IAM USER NAME

2.IAM PASSWORD

3.IAM CONSOLE LINK

✔ VPC ID

✔ Subnet Count

✔ EC2 Instance ID

✔ AWS Region

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🔐 Best Practices Followed

✅ Modular Design

✅ Reusable Code

✅ Environment Separation

✅ Secure IAM Policies

✅ Clean Git Structure

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🧠 Key Learnings

• Terraform modular architecture
• AWS infrastructure provisioning
• Dev vs Prod environment management
• Git-based workflow

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👨‍💻 Author

Chaitanya Bhosale

🔗 GitHub: https://github.com/Chaitanya5068

🔗 LinkedIn: https://www.linkedin.com/in/chaitanya-bhosale

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⭐ Support

If you found this project useful, consider giving it a ⭐ on GitHub!

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📌 Note

This project is created for educational purposes and demonstrates real-world Terraform practices.