ECS with ALB integration in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define an ECS cluster.

AWS

resource "aws_ecs_cluster" "example" {
  name = "[1]"
}

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Amy-ecs-cluster

Becs-cluster-1

Cexample-cluster

Dcluster-ecs

Attempts:

3 left

💡 Hint

Common Mistakes

Leaving the name blank or using invalid characters.

Using a name that conflicts with existing resources.

The ECS cluster name is set to "example-cluster" to identify the cluster.

2fill in blank

medium

Complete the code to create an Application Load Balancer (ALB).

AWS

resource "aws_lb" "app_alb" {
  name               = "app-alb"
  internal           = false
  load_balancer_type = "[1]"
  subnets            = var.subnet_ids
}

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Anetwork

Bapplication

Cgateway

Dclassic

Attempts:

3 left

💡 Hint

Common Mistakes

Using "network" or "classic" instead of "application".

Leaving the load_balancer_type undefined.

The ALB type must be set to "application" for ECS integration.

3fill in blank

hard

Fix the error in the ECS task definition to specify the container port mapping.

AWS

container_definitions = jsonencode([
  {
    "name": "web",
    "image": "nginx",
    "portMappings": [
      {
        "containerPort": [1],
        "hostPort": 0,
        "protocol": "tcp"
      }
    ]
  }
])

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A22

B8080

C443

D80

Attempts:

3 left

💡 Hint

Common Mistakes

Using port 22 which is for SSH, not web traffic.

Using port 443 which is for HTTPS but nginx defaults to 80.

The container port for a web server like nginx is typically 80.

4fill in blank

hard

Fill both blanks to define a listener and target group for the ALB.

AWS

resource "aws_lb_target_group" "app_tg" {
  name     = "app-tg"
  port     = [1]
  protocol = "[2]"
  vpc_id   = var.vpc_id
}

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A80

B443

CHTTP

DHTTPS

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing port 443 with HTTP protocol.

Using HTTPS protocol without proper certificates.

The target group listens on port 80 using HTTP protocol for typical web traffic.

5fill in blank

hard

Fill all three blanks to configure the ECS service with ALB integration.

AWS

resource "aws_ecs_service" "app_service" {
  name            = "app-service"
  cluster         = aws_ecs_cluster.example.id
  task_definition = aws_ecs_task_definition.app_task.[1]
  desired_count   = 2
  launch_type     = "FARGATE"

  network_configuration {
    subnets         = var.subnet_ids
    security_groups = [aws_security_group.app_sg.id]
    assign_public_ip = true
  }

  load_balancer {
    target_group_arn = aws_lb_target_group.app_tg.[2]
    container_name   = "web"
    container_port   = [3]
  }
}

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Aarn

Bid

C80

Drevision

Attempts:

3 left

💡 Hint

Common Mistakes

Using task definition ARN instead of revision.

Using target group ID instead of ARN.

Setting container port to wrong value.

The ECS service requires the task definition revision, the target group ARN, and the container port 80 for ALB integration.