Why dynamic blocks reduce repetition in Terraform - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a dynamic block in Terraform.

Terraform

dynamic "[1]" {
  for_each = var.items
  content {
    cidr_blocks = [each.value]
  }
}

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

Aresource

Bitem

Cblock

Dingress

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'resource' instead of the block name.

Using 'block' which is not a valid block name.

Using 'item' which is a variable name, not a block.

The dynamic block name should match the block you want to repeat, such as ingress for security group rules.

2fill in blank

medium

Complete the code to access each item in the dynamic block.

Terraform

content {
  cidr_blocks = [each.value.[1]]
}

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

Acidr_block

Bcidr

Ccidr_blocks

Dcidrblock

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'cidr' which is incomplete.

Using 'cidr_blocks' which is the list, not the property.

Using 'cidrblock' which is misspelled.

Each item in the list should have a property named cidr_block to access the CIDR range.

3fill in blank

hard

Fix the error in the dynamic block to correctly iterate over a list.

Terraform

dynamic "ingress" {
  for_each = [1]
  content {
    from_port   = each.value.from_port
    to_port     = each.value.to_port
    protocol    = each.value.protocol
  }
}

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

Avar.ingress_rules

Bvar.ingress_rule

Cvar.ingress

Dvar.rules

Attempts:

3 left

💡 Hint

Common Mistakes

Using singular 'ingress_rule' which is not a list.

Using a generic 'rules' which may not exist.

Using 'ingress' which may be a block name, not a variable.

The variable should be the list of ingress rules, typically named ingress_rules.

4fill in blank

hard

Fill both blanks to add the Name tag to the resource.

Terraform

resource "aws_instance" "example" {
  ami           = var.ami
  instance_type = var.instance_type

  tags = {
    [1] = [2]
  }
}

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

AName

Bvar.name

CEnvironment

Dvar.environment

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names as keys instead of strings.

Mixing up keys and values.

Using incorrect variable names.

The tag key is 'Name' and its value comes from var.name.

5fill in blank

hard

Fill all three blanks to define a dynamic block for multiple security group egress rules.

Terraform

dynamic "egress" {
  for_each = [1]
  content {
    from_port   = each.value.[2]
    to_port     = each.value.[3]
    protocol    = each.value.protocol
  }
}

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

Avar.egress_rules

Bfrom_port

Cto_port

Dvar.rules

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable that is not a list.

Swapping 'from_port' and 'to_port' names.

Using generic variable names like 'rules' without context.

The dynamic block iterates over var.egress_rules, accessing from_port and to_port properties for each rule.