Data source dependencies in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to reference the AWS VPC data source.

Terraform

data "aws_vpc" "main" {
  id = [1]
}

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

Aaws_vpc.main.id

Bvar.vpc_id

Cvpc-123456

Dlocal.vpc_id

Attempts:

3 left

💡 Hint

Common Mistakes

Using the data source name instead of a variable.

Hardcoding the VPC ID directly in the code.

The id attribute should reference a variable holding the VPC ID, such as var.vpc_id.

2fill in blank

medium

Complete the code to create a subnet using the VPC ID from the data source.

Terraform

resource "aws_subnet" "example" {
  vpc_id = [1]
  cidr_block = "10.0.1.0/24"
}

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Alocal.vpc_id

Bvar.vpc_id

Caws_vpc.main.id

Ddata.aws_vpc.main.id

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable instead of the data source.

Referencing the resource instead of the data source.

The subnet's vpc_id should reference the ID from the data source: data.aws_vpc.main.id.

3fill in blank

hard

Fix the error in the data source dependency to correctly get the subnet IDs.

Terraform

data "aws_subnet_ids" "selected" {
  vpc_id = [1]
}

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Adata.aws_vpc.main.id

Bvar.vpc_id

Clocal.vpc_id

Daws_vpc.main.id

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the data. prefix.

Using a variable instead of the data source.

The vpc_id must reference the data source with data.aws_vpc.main.id to ensure proper dependency.

4fill in blank

hard

Fill both blanks to create a security group that depends on the VPC data source.

Terraform

resource "aws_security_group" "example" {
  name        = "example-sg"
  description = "Example security group"
  vpc_id      = [1]

  ingress {
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = [[2]]
  }
}

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

Adata.aws_vpc.main.id

B"0.0.0.0/0"

Cvar.vpc_id

D"10.0.0.0/16"

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable instead of the data source for VPC ID.

Not quoting the CIDR block string.

The vpc_id should come from the data source data.aws_vpc.main.id. The ingress cidr_blocks should allow traffic from "0.0.0.0/0" for public access.

5fill in blank

hard

Fill all three blanks to output the subnet IDs from the data source with a condition.

Terraform

output "public_subnet_ids" {
  value = [for id in [1] : id if [2](id, [3])]
}

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Adata.aws_subnet_ids.selected.ids

Bstarts_with

C"subnet-"

Dvar.subnet_ids

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable instead of the data source for subnet IDs.

Incorrect syntax for the filter condition.

The output iterates over subnet IDs from the data source data.aws_subnet_ids.selected.ids, filtering IDs that start with "subnet-" using the starts_with function.