For expressions for transformation in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a list of doubled numbers using a for expression.

Terraform

output "doubled" {
  value = [for num in var.numbers : num [1] 2]
}

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

A/

B*

C-

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using + instead of * will add 2 instead of doubling.

Using / or - will not double the numbers.

The for expression multiplies each number by 2 using the * operator.

2fill in blank

medium

Complete the code to create a map of instance names to their IDs using a for expression.

Terraform

output "instance_map" {
  value = {for inst in var.instances : inst.name => inst.[1]
}

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

Aname

Btype

Cid

Dcount

Attempts:

3 left

💡 Hint

Common Mistakes

Using inst.name as value duplicates the key.

Using inst.type or inst.count are not valid for IDs.

The for expression maps instance names to their IDs using inst.id.

3fill in blank

hard

Fix the error in the for expression to filter only even numbers.

Terraform

output "even_numbers" {
  value = [for n in var.numbers : n if n [1] 2 == 0]
}

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

A+

B*

C/

D%

Attempts:

3 left

💡 Hint

Common Mistakes

Using + or * will not filter even numbers.

Using / returns a quotient, not remainder.

The modulo operator % checks if a number is even by testing remainder 0.

4fill in blank

hard

Fill both blanks to create a map of server names to their IP addresses, filtering only active servers.

Terraform

output "active_servers" {
  value = {for s in var.servers : s.[1] => s.[2] if s.active}
}

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

Aname

Bip

Cid

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using id or status instead of name or ip.

Not filtering by active status.

The map uses server name as key and IP as value, filtering active servers.

5fill in blank

hard

Fill all three blanks to create a map of uppercase user names to their emails, filtering users with verified emails.

Terraform

output "verified_user_emails" {
  value = {for user in var.users : user.[1].[2]() => user.[3] if user.email_verified}
}

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

Aname

Bupper

Cemail

Dlower

Attempts:

3 left

💡 Hint

Common Mistakes

Using lower() instead of upper() for names.

Using email_verified as key instead of filtering condition.

The map uses uppercase user names as keys and emails as values, filtering verified emails.