gauch0 / test-interns-endava-2

New Test to work on

AWS Infrastructure Deployment with Terraform 🌟

🚀 Overview:

This repository showcases a Terraform-based deployment of a scalable and secure AWS infrastructure, designed as a practical test for DevOps skills in Infrastructure as Code (IaC) and AWS Cloud services.

💡 Objective:

The aim is to automate the deployment of a multi-server environment on AWS using Terraform, focusing on cost-efficiency by leveraging AWS's free tier resources. This project tests the candidate's ability to create a functional and secure cloud infrastructure within specified constraints.

🛠️ Technology Stack:

• Terraform: 🌐 For provisioning and managing AWS resources as code.
• AWS EC2: 💻 Two instances, one with Nginx and another with Apache, to demonstrate a multi-server setup.
• AWS Application Load Balancer (ALB): 🔄 To distribute incoming traffic between the two EC2 instances.
• AWS Security Groups: 🔒 To define traffic rules for the EC2 instances and the ALB, ensuring security best practices.

📚 Documentation

This README offers a step-by-step guide on deploying the infrastructure, with detailed explanations of the Terraform configurations used.

📖 Index

• 🏗️ Solution Architecture
  • 🔧 Infrastructure Components
• ⚙️ Terraform Configuration
• 🚀 Provisioning and Deployment
  • 🔑 Prerequisites
  • 🛠️ Deployment Steps
• 🧪 Testing the Infrastructure

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🏗️ Solution Architecture

The designed infrastructure aims to provide a basic, scalable, and secure web application environment on AWS.

🔧 Infrastructure Components

1. Application Load Balancer (ALB): 🔄 Directs traffic to EC2 instances based on rules.
2. EC2 Instances:
   • Server 01: 🟢 Runs Nginx.
   • Server 02: 🔵 Runs Apache.
3. Security Groups: 🔒 Separate groups for ALB and EC2 instances to adhere to the principle of least privilege.

⚙️ Terraform Configuration

The Terraform setup is organized into multiple files for better manageability:

• ALB-application.tf: Configures the ALB.
• ec2instance-apache.tf & ec2instance-nginx.tf: Provisions the EC2 instances.
• security-group-*.tf: Defines the security groups and their rules.

🚀 Provisioning and Deployment

🔑 Prerequisites

• AWS Account 🌐
• Terraform installed 🛠️
• AWS CLI configured 🔧

🛠️ Deployment Steps

1. Initialize Terraform: 🌱

   terraform init

2. Plan the Deployment: 📈:

   terraform plan

3. Apply the Configuration: ✅

   terraform apply

🧪 Testing the Infrastructure

After deployment, the ALB's DNS name, provided as a Terraform output, serves as the entry point for testing.

🕵️‍♂️ Access the ALB URL:

The ALB URL is output by Terraform upon successful deployment. Look for an output variable named something like alb_dns_name.

🚀 Test the Load Balancing:

Use a browser or a tool like curl to make requests to the ALB URL. You should see responses alternately from the Nginx and Apache servers, indicating successful load balancing.

curl -X GET <alb_dns_name>