String interpolation in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to interpolate the variable 'name' inside the string.

Terraform

output "greeting" {
  value = "Hello, ${var.[1]!"
}

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

Ausername

Buser

Cname

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name that does not exist like 'username' or 'user'.

Forgetting to use the 'var.' prefix inside interpolation.

The variable 'name' is referenced as var.name inside the interpolation syntax ${}.

2fill in blank

medium

Complete the code to concatenate the variable 'region' with a string using interpolation.

Terraform

resource "aws_instance" "example" {
  tags = {
    Name = "web-server-[1]"
  }
}

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

A${var.region}

Bvar.region

C${region}

Dregion

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the interpolation syntax and writing just 'var.region'.

Using the variable name without the 'var.' prefix.

To interpolate a variable in Terraform, use ${var.variable_name}. Here, ${var.region} correctly inserts the region value.

3fill in blank

hard

Fix the error in the interpolation syntax to correctly reference the 'environment' variable.

Terraform

output "env_name" {
  value = "Current environment is ${var.[1]"
}

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Aenvironment}

Benvironment

Cenvironment}}

D{environment}

Attempts:

3 left

💡 Hint

Common Mistakes

Leaving out the closing brace '}' in the interpolation.

Adding extra braces or missing the variable prefix.

The interpolation syntax must be closed properly with a closing brace }. The correct reference is ${var.environment}.

4fill in blank

hard

Fill both blanks to create a tag that combines 'app' and 'version' variables with a dash.

Terraform

resource "aws_s3_bucket" "bucket" {
  tags = {
    Name = "${var.[1]-${var.[2]"
  }
}

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

Aapp

Bversion

Cenv

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using variables that do not exist like 'env' or 'name'.

Forgetting to use the 'var.' prefix.

The tag combines the 'app' and 'version' variables separated by a dash. Both variables must be referenced with var. inside interpolation.

5fill in blank

hard

Fill all three blanks to create an output that shows the full resource ID with region and environment.

Terraform

output "resource_id" {
  value = "arn:aws:ec2:${var.[1]:${var.[2]:instance/${var.[3]"
}

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

Aregion

Baccount_id

Cinstance_id

Denvironment

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up variable names or missing the 'var.' prefix.

Using 'environment' instead of 'account_id' or 'instance_id'.

The ARN format requires region, account ID, and instance ID. Each variable is referenced with var. inside interpolation.