Main

application.tf

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+# ECS cluster, service and load balancer for running the application
+
+resource "aws_ecs_cluster" "cluster" {
+  name = "testapp"
+}
+
+resource "aws_ecs_cluster_capacity_providers" "capacity_providers" {
+  cluster_name = aws_ecs_cluster.cluster.name
+}
+
+resource "aws_lb" "testapp" {
+  name               = aws_ecs_cluster.cluster.name
+  internal           = false
+  load_balancer_type = "application"
+  security_groups    = [ aws_security_group.testapp.id ]
+  subnets            = var.subnets
+}
+
+resource "aws_lb_listener" "testapp" {
+  load_balancer_arn = aws_lb.testapp.arn
+  port              = "80"
+  protocol          = "HTTP"
+
+  default_action {
+    type             = "forward"
+    target_group_arn = aws_lb_target_group.testapp.arn
+  }
+}
+
+resource "aws_lb_target_group" "testapp" {
+  name     = "testapp"
+  port     = 80
+  protocol = "HTTP"
+  target_type = "ip"
+  vpc_id   = aws_security_group.testapp.vpc_id
+
+  health_check {
+    matcher = "200"
+    path = "/"
+    port = 80
+  }
+}
+
+resource "aws_ecs_task_definition" "testapp" {
+  family = "testapp"
+
+  requires_compatibilities = ["FARGATE"]
+  cpu                      = 1024
+  memory                   = 2048
+
+  network_mode       = "awsvpc"
+
+  container_definitions = jsonencode([
+    {
+      name         = "testapp"
+
+      # this is a sample http container that responds on port 80
+      image        = "yeasy/simple-web:latest"
+      essential    = true
+      portMappings = [
+        {
+          containerPort = 80
+          hostPort      = 80
+        }
+      ]
+      environment = [
+        { name = "HTTPPORT", value = "80" },
+        { name = "MEM_MX", value = "2048m" },
+        { name = "DB_DEFAULT_URL", value = "jdbc:postgresql://${aws_db_instance.database.endpoint}/testapp" },
+        { name = "DB_DEFAULT_USER", value = "testapp" },
+        { name = "DB_DEFAULT_PASSWORD", value = "xw3489sf" },
+        { name = "S3_BUCKET", value = aws_s3_bucket.bucket.bucket }
+      ]
+    }
+  ])
+}
+
+resource "aws_ecs_service" "testapp" {
+  name            = "testapp"
+  cluster         = aws_ecs_cluster.cluster.name
+  task_definition = "${aws_ecs_task_definition.testapp.id}:${aws_ecs_task_definition.testapp.revision}"
+
+  health_check_grace_period_seconds = 30
+  desired_count = 1
+
+  load_balancer {
+    target_group_arn = aws_lb_target_group.testapp.arn
+    container_name   = "testapp"
+    container_port   = 80
+  }
+
+  capacity_provider_strategy {
+    capacity_provider = "FARGATE"
+    weight = 1
+  }
+
+  network_configuration {
+    subnets            = aws_lb.testapp.subnets
+    security_groups    = aws_lb.testapp.security_groups
+    assign_public_ip   = true
+  }
+
+}
+
+resource "aws_security_group" "testapp" {
+  name        = "testapp"
+  description = "Security group for testapp"
+  vpc_id      = var.vpc_id
+
+  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"]
+  }
+}

cdn.tf

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+# Cloudfront CDN serving the load balancer from the ECS service
+
+resource "aws_cloudfront_distribution" "cloudfront" {
+
+  comment                        = "testapp"
+  enabled                        = true
+  http_version                   = "http2"
+
+  default_cache_behavior {
+    target_origin_id         = aws_lb.testapp.dns_name
+    allowed_methods          = [ "DELETE", "GET", "HEAD", "OPTIONS", "PATCH", "POST", "PUT" ]
+    cached_methods           = [ "GET", "HEAD" ]
+    viewer_protocol_policy   = "redirect-to-https"
+
+    forwarded_values {
+      query_string            = true
+      cookies {
+        forward           = "all"
+      }
+    }
+  }
+
+  origin {
+    domain_name         = aws_lb.testapp.dns_name
+    origin_id           = aws_lb.testapp.dns_name
+    custom_origin_config {
+      http_port                = 80
+      https_port               = 443
+      origin_protocol_policy   = "http-only"
+      origin_ssl_protocols     = [ "TLSv1", "TLSv1.1", "TLSv1.2" ]
+    }
+  }
+
+  restrictions {
+    geo_restriction {
+      restriction_type = "none"
+    }
+  }
+
+  viewer_certificate {
+    cloudfront_default_certificate = true
+  }
+
+}

database.tf

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+
+# Postgres Database for the app
+resource "aws_db_instance" "database" {
+
+  db_name = "testappdb"
+  identifier = "testapp-db"
+
+  instance_class = "db.t3.micro"
+  engine = "postgres"
+  engine_version = "15.2"
+
+  multi_az = false
+  allocated_storage    = 10 # gibibytes
+
+  username = "root"
+  password = "xw3489sf"
+
+  apply_immediately = true
+  skip_final_snapshot = true
+}

provider.tf

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+provider "aws" {
+  region = "eu-west-1"
+}
+
+variable "vpc_id" { type = string }
+variable "subnets" { type = list(string) }

storage.tf

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+
+# Storage bucket for the app
+resource "aws_s3_bucket" "bucket" {
+  bucket = "testapp-files"
+}