🌍 Autonomous Self-Healing Infrastructure using AWS + Terraform + Nginx

This project showcases how to build a fully automated and self-healing web server infrastructure on Amazon Web Services (AWS) using Terraform. If any EC2 instance fails or is terminated, the Auto Scaling Group (ASG) automatically recreates it — ensuring zero downtime and high availability.

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🚀 Features

✅ Fully automated AWS infrastructure provisioning via Terraform ✅ Self-healing EC2 instances using Auto Scaling Groups ✅ Application Load Balancer (ALB) for traffic distribution ✅ Nginx web server auto-installed using a user data script ✅ Built entirely as Infrastructure as Code (IaC) ✅ Modular, reusable Terraform configuration

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🧩 Project Structure

Autonomous-SelfHealing-Infrastructure/
│
├── main.tf            # Core infrastructure definitions
├── provider.tf        # AWS provider configuration
├── variables.tf       # Input variables (region, AMI, instance type, etc.)
├── security.tf        # Security group and firewall rules
├── vpc.tf             # VPC, subnets, and networking configuration
├── userdata.tpl       # Nginx auto-installation and sample HTML page
├── outputs.tf         # ALB DNS output after deployment
├── .terraform.lock.hcl# Terraform dependency lock file
└── README.md          # Project documentation

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⚙️ Prerequisites

Before you begin, make sure you have the following:

• ☁️ AWS Account (with administrative permissions)
• 💻 AWS CLI installed and configured locally
• 🧱 Terraform v1.x installed
• 🔗 Git installed

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🪜 Setup Instructions

Step 1: Clone the Repository

git clone https://github.com/AhmadProjects-git/Autonomous-SelfHealing-Infrastructure.git
cd Autonomous-SelfHealing-Infrastructure

Step 2: Initialize Terraform

terraform init

Step 3: Review the Plan

terraform plan

Step 4: Deploy the Infrastructure

terraform apply -auto-approve

✅ Terraform will:

• Create a VPC, subnets, and security groups
• Launch an EC2 Auto Scaling Group with Nginx installed
• Configure and attach an Application Load Balancer
• Output the ALB DNS endpoint

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🌐 Step 5: Access Your Application

Once deployment completes, Terraform will output something like:

alb_dns_name = selfheal-alb-1234567890.us-east-1.elb.amazonaws.com

Open that URL in your browser 🌍 You’ll see a green “Nginx + Terraform + AWS” webpage — confirming successful deployment ✅

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🧠 Step 6: Test the Self-Healing Capability

1. Log in to the AWS Console → EC2 → Instances
2. Manually terminate the running instance 🧨
3. Watch the Auto Scaling Group automatically launch a new instance 🎯

Your application will remain available throughout — no downtime!

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🧹 Step 7: Clean Up Resources

When you’re done testing, destroy all resources to avoid costs:

terraform destroy -auto-approve

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🧰 Technologies Used

• AWS EC2, VPC, ALB, Auto Scaling Groups
• Terraform (IaC)
• Nginx Web Server
• User Data scripting

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👨‍💻 Maintainer

Developed by: @AhmadProjects-git 🌐 GitHub Repository: Autonomous-SelfHealing-Infrastructure

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💬 Support & Contributions

💡 Found an issue or have ideas to improve?

• Open an Issue
• Or submit a Pull Request

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Happy Automating! 🤖⚙️ Build resilient, self-healing, and autonomous cloud systems — the DevOps way! 🌩️

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🏁 License

This project is licensed under the MIT License. You’re free to use, modify, and distribute it — just give credit 💙

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