Production Ready Terraform Configuration for AWS

Multi-environment infrastructure as code for AWS with modular, reusable Terraform configurations supporting development, staging, and production workloads.

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📁 Project Structure

terraform/
├── environments/
│   ├── dev/          # Development environment
│   ├── staging/      # Staging environment
│   └── prod/         # Production environment
└── modules/
    ├── common/       # Shared resources
    ├── ec2/          # EC2 instances & security groups
    ├── ecr/          # Elastic Container Registry
    ├── eks/          # Elastic Kubernetes Service
    ├── iam/          # IAM roles & policies
    ├── keypair/      # SSH key management
    ├── s3/           # S3 storage buckets
    └── vpc/          # Network infrastructure

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🔧 Prerequisites

• Terraform v1.0+
• AWS CLI configured with appropriate credentials
• AWS account with necessary permissions

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🏗️ Modules

Module	Description
common	Shared resources and configurations
ec2	Instance and security group management
ecr	Elastic Container Registry for Docker images
eks	Elastic Kubernetes Service cluster management
iam	Identity and Access Management roles/policies
keypair	SSH key pair management
s3	Storage bucket with security features
vpc	Network infrastructure and routing

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🌍 Environment Specifications

Environment	Instance Type	CIDR Block	Purpose
dev	t2.micro	10.0.0.0/16	Feature development & testing
staging	t2.small	10.1.0.0/16	Pre-production testing
prod	t2.medium	10.2.0.0/16	Live workloads

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🚀 Quick Start

# 1. Navigate to environment
cd environments/<env>   # dev, staging, or prod

# 2. Initialize Terraform
terraform init

# 3. Review changes
terraform plan

# 4. Apply infrastructure
terraform apply

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🔑 Key Features

Infrastructure Components

• VPC with public/private subnets
• EC2 instances for web and application servers
• EKS clusters for container orchestration
• ECR repositories for Docker images
• S3 buckets for storage
• IAM roles and policies

Security Measures

• Network isolation with security groups
• IAM role-based access control
• Encryption at rest
• Public access blocking
• Least privilege principle

Scalability

• Environment-specific resource sizing
• Modular, reusable design
• Expandable CIDR ranges

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📋 Common Commands

Command	Description
terraform init	Initialize working directory
terraform plan	Preview infrastructure changes
terraform apply	Create/update infrastructure
terraform destroy	Destroy all resources
terraform destroy -target=TYPE.NAME	Destroy specific resource

⚠️ Warning: Avoid using terraform destroy --auto-approve in production environments.

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✅ Best Practices

Code Organization

• Modular structure with DRY principles
• Clear separation of concerns
• Environment isolation

Security

• Network segmentation
• Resource isolation
• Access controls with encryption

Maintainability

• Consistent naming conventions
• Environment-specific state files
• Remote backend for production