feat: add terraform iac

infra/main.tf

@@ -0,0 +1,109 @@
+terraform {
+  required_version = ">= 1.0"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 5.0"
+    }
+  }
+}
+
+# Data source for available AZs in the region
+data "aws_availability_zones" "available" {}
+
+# Security group for both instances and ELB
+resource "aws_security_group" "default" {
+  name = "${var.PROJECT_NAME}-${var.ENVIRONMENT}-sg"
+
+  ingress {
+    from_port   = 80
+    to_port     = 80
+    protocol    = "tcp"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+
+  egress {
+    from_port   = 0
+    to_port     = 0
+    protocol    = "-1"
+    cidr_blocks = ["0.0.0.0/0"]
+  }
+
+  tags = {
+    Name        = "${var.PROJECT_NAME}-${var.ENVIRONMENT}-sg"
+    Environment = var.ENVIRONMENT
+  }
+}
+
+# Launch configuration for the autoscaling group
+resource "aws_launch_configuration" "example" {
+  image_id        = "ami-58d7e821"
+  instance_type   = "t2.micro"
+  security_groups = [aws_security_group.default.id]
+
+  user_data = <<-EOF
+              #!/bin/bash
+              echo "Hello, World" > index.html
+              nohup busybox httpd -f -p 80 &
+              EOF
+
+  lifecycle {
+    create_before_destroy = true
+  }
+}
+
+# Autoscaling group for high availability
+resource "aws_autoscaling_group" "example" {
+  launch_configuration = aws_launch_configuration.example.id
+  availability_zones   = data.aws_availability_zones.available.names
+  min_size             = 2
+  max_size             = 5
+  desired_capacity     = 3
+
+  target_group_arns = [aws_lb_target_group.example.arn]
+
+  tag {
+    key                 = "Name"
+    value               = "${var.PROJECT_NAME}-${var.ENVIRONMENT}-asg"
+    propagate_at_launch = true
+  }
+}
+
+# Load balancer for distributing traffic
+resource "aws_lb" "example" {
+  name                       = "${var.PROJECT_NAME}-${var.ENVIRONMENT}-lb"
+  internal                   = false
+  load_balancer_type         = "application"
+  security_groups            = [aws_security_group.default.id]
+  subnets                    = data.aws_availability_zones.available.names
+  enable_deletion_protection = false
+
+  tags = {
+    Name        = "${var.PROJECT_NAME}-${var.ENVIRONMENT}-lb"
+    Environment = var.ENVIRONMENT
+  }
+}
+
+# Target group for the load balancer
+resource "aws_lb_target_group" "example" {
+  name        = "${var.PROJECT_NAME}-${var.ENVIRONMENT}-tg"
+  target_type = "instance"
+  port        = 80
+  protocol    = "HTTP"
+  vpc_id      = var.VPC_ID
+
+  health_check {
+    interval            = 30
+    timeout             = 5
+    healthy_threshold   = 2
+    unhealthy_threshold = 2
+    path                = "/"
+    protocol            = "HTTP"
+  }
+
+  tags = {
+    Name        = "${var.PROJECT_NAME}-${var.ENVIRONMENT}-tg"
+    Environment = var.ENVIRONMENT
+  }
+}

infra/output.tf

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+# Output for the load balancer DNS name
+output "elb_dns_name" {
+  value = aws_lb.example.dns_name
+}

infra/provider.tf

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+terraform {
+  required_version = ">= 1.0"
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 5.0"
+    }
+  }
+}
+
+provider "aws" {
+  region = var.REGION
+}

infra/terraform.tfvars

@@ -0,0 +1 @@
+REGION = "ap-southeast-2"

infra/variables.tf

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+variable "REGION" {
+  description = "AWS region"
+  type        = string
+  default     = "ap-southeast-2"
+}
+
+# Variables for dynamic naming
+variable "PROJECT_NAME" {
+  description = "Name of the project"
+  default     = "droneshield"
+}
+
+variable "ENVIRONMENT" {
+  description = "Deployment environment (e.g., dev, staging, prod)"
+  default     = "dev"
+}
+
+variable "VPC_ID" {
+  description = "ID of the VPC"
+  type        = string
+}