Lifecycle customization in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to prevent Terraform from deleting the resource.

Terraform

resource "aws_s3_bucket" "example" {
  bucket = "my-bucket"

  lifecycle {
    prevent_destroy = [1]
  }
}

Drag options to blanks, or click blank then click option'

A"true"

Btrue

Cfalse

Dnull

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around true makes it a string, not a boolean.

Setting prevent_destroy to false allows deletion.

Setting prevent_destroy = true tells Terraform to block deletion of the resource.

2fill in blank

medium

Complete the code to ignore changes to the 'tags' attribute.

Terraform

resource "aws_instance" "web" {
  ami           = "ami-123456"
  instance_type = "t2.micro"

  lifecycle {
    ignore_changes = [[1]]
  }
}

Drag options to blanks, or click blank then click option'

A"tags"

B"ami"

C"instance_type"

D"user_data"

Attempts:

3 left

💡 Hint

Common Mistakes

Ignoring 'ami' would prevent updates to the image.

Ignoring 'instance_type' would block resizing the instance.

Ignoring changes to tags means Terraform won't update the resource if tags change outside Terraform.

3fill in blank

hard

Fix the error in the lifecycle block to properly ignore changes to multiple attributes.

Terraform

resource "aws_db_instance" "db" {
  allocated_storage = 20
  engine            = "mysql"

  lifecycle {
    ignore_changes = [1]
  }
}

Drag options to blanks, or click blank then click option'

A[allocated_storage, engine]

B"allocated_storage, engine"

C["allocated_storage", "engine"]

D"[allocated_storage, engine]"

Attempts:

3 left

💡 Hint

Common Mistakes

Using a single string with commas is invalid syntax.

Not quoting attribute names causes errors.

The ignore_changes attribute expects a list of strings. Option C correctly provides a list of attribute names as strings.

4fill in blank

hard

Fill both blanks to create a lifecycle rule that ignores changes to 'tags' and prevents resource replacement.

Terraform

resource "aws_lambda_function" "func" {
  function_name = "my-function"
  runtime       = "python3.8"

  lifecycle {
    ignore_changes = [[1]]
    [2] = true
  }
}

Drag options to blanks, or click blank then click option'

A"tags"

Bprevent_destroy

Ccreate_before_destroy

D"runtime"

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'create_before_destroy' instead of 'prevent_destroy' for deletion prevention.

Not quoting 'tags' in the list.

Ignoring changes to tags avoids updates on tag changes. Setting prevent_destroy = true blocks resource deletion.

5fill in blank

hard

Fill all three blanks to create a lifecycle block that ignores changes to 'environment', prevents destroy, and enables create before destroy.

Terraform

resource "aws_ecs_service" "service" {
  name            = "my-service"
  desired_count   = 2

  lifecycle {
    ignore_changes     = [[1]]
    [2] = true
    [3] = true
  }
}

Drag options to blanks, or click blank then click option'

A"environment"

Bprevent_destroy

Ccreate_before_destroy

D"desired_count"

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up 'prevent_destroy' and 'create_before_destroy' settings.

Not quoting the attribute name in the ignore_changes list.

This lifecycle block ignores changes to the environment attribute, prevents resource deletion, and ensures the new resource is created before the old one is destroyed.