A collection of Terraform modules demonstrating various AWS infrastructure patterns and best practices.

This repository contains example Terraform configurations for provisioning different AWS resources. Each directory contains a standalone module that can be used as a reference for implementing specific AWS infrastructure patterns.

• Path: auto-scaling-group/
• Description: Demonstrates how to create an Auto Scaling Group with launch templates and scaling policies.

• Path: ec2/
• Description: Basic EC2 instance provisioning with security groups and SSH key management.

• Path: ec2-ebs/
• Description: Provisions an EC2 instance with an additional EBS volume, including Ansible integration for automated volume mounting.
• Features:
  • Attaches and mounts a 20GB EBS volume to /data
  • Includes automated formatting and mounting via Ansible playbooks
  • Configures logging for deployment processes
  • Uses SSM for secure instance management

• Path: eks-fargate/
• Description: Sets up an Amazon EKS cluster using Fargate profiles for serverless container deployment.
• Features:
  • Serverless Kubernetes cluster without managing EC2 instances
  • Custom VPC configuration with private and public subnets
  • Includes example Nginx deployment

• Path: eks-fargate-lb/
• Description: Extends the basic EKS Fargate setup with an Application Load Balancer for external access.
• Features:
  • Application Load Balancer with security groups
  • Target group configuration for Nginx service
  • Public endpoint for accessing containerized applications
  • Health check configuration

• Path: elasticsearch-multi-az/
• Description: Deploys an Elasticsearch cluster across multiple availability zones for high availability.

• Path: elasticsearch-single-az/
• Description: Sets up a single-AZ Elasticsearch deployment with security groups and SSM integration.

This project uses devbox to create a consistent development environment with all necessary tools.

• Install devbox: https://www.jetpack.io/devbox/docs/installing_devbox/

The devbox environment includes:

• OpenTofu (Terraform compatible)
• kubectl
• Helm
• k9s

1. Initialize the devbox environment:

   devbox shell
   

2. This will automatically install all required tools and dependencies

3. Verify installations:

   tofu --version
   kubectl version --client
   helm version
   k9s version
   

• AWS CLI configured with appropriate credentials
• Terraform/OpenTofu v0.19+ installed
• Basic understanding of AWS services and Terraform

Each module is independent and can be used separately. To use a specific module:

1. Navigate to the module directory
2. Initialize the Terraform configuration:

   tofu init
   

3. Review and modify the configuration as needed
4. Apply the Terraform configuration:

   tofu apply
   

Each module typically includes:

• main.tf - Main Terraform configuration
• variables.tf - Input variables
• outputs.tf - Output values
• data.tf or data-source.tf - Data sources
• Specific resource configurations (e.g., ec2-sg.tf, elasticsearch.tf)
• README.md - Module-specific documentation

• Resource organization and module structure
• Security group configuration
• IAM role management
• Data encryption
• High availability patterns
• Infrastructure automation

This project is provided for educational and reference purposes. Review and customize the configurations before using in production environments.