Resource arguments and attributes in Terraform - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define an AWS S3 bucket with a name.

Terraform

resource "aws_s3_bucket" "my_bucket" {
  bucket = "[1]"
}

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

Amy-unique-bucket-123

Baws_bucket

Cbucket_name

Ds3_bucket

Attempts:

3 left

💡 Hint

Common Mistakes

Using variable names instead of actual bucket names.

Leaving the bucket name empty.

The bucket argument requires the actual bucket name as a string. Here, "my-unique-bucket-123" is a valid bucket name.

2fill in blank

medium

Complete the code to reference the ARN attribute of the AWS S3 bucket resource.

Terraform

output "bucket_arn" {
  value = aws_s3_bucket.my_bucket.[1]
}

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

Aurl

Bid

Cname

Darn

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'id' instead of 'arn' for the bucket ARN.

Using 'name' which only gives the bucket name.

The arn attribute gives the Amazon Resource Name of the bucket, which uniquely identifies it.

3fill in blank

hard

Fix the error in the resource block by completing the missing argument for versioning configuration.

Terraform

resource "aws_s3_bucket" "my_bucket" {
  bucket = "my-versioned-bucket"

  versioning {
    [1] = "Enabled"
  }
}

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

Astatus

Bactive

Cversioning_enabled

Denabled

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'enabled' instead of 'status'.

Using boolean true instead of string "Enabled".

Using incorrect argument names like 'versioning_enabled'.

The correct argument to enable versioning inside the versioning block is status set to "Enabled".

4fill in blank

hard

Fill both blanks to create a resource with tags and a lifecycle block to prevent deletion.

Terraform

resource "aws_s3_bucket" "my_bucket" {
  bucket = "my-tagged-bucket"

  tags = {
    [1] = "Production"
  }

  lifecycle {
    [2] = true
  }
}

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

AEnvironment

Bstatus

Cprevent_destroy

Dtag

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'tag' instead of 'Environment' as tag key.

Using 'status' instead of 'prevent_destroy'.

The tag key should be 'Environment' to label the bucket. The lifecycle block uses 'prevent_destroy' = true to prevent Terraform from deleting the bucket.

5fill in blank

hard

Fill all three blanks to output the bucket name, ARN, and region attributes.

Terraform

output "bucket_info" {
  value = {
    name   = aws_s3_bucket.my_bucket.[1],
    arn    = aws_s3_bucket.my_bucket.[2],
    region = aws_s3_bucket.my_bucket.[3]
  }
}

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

Abucket

Barn

Cregion

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'id' instead of 'bucket' for the name.

Confusing 'region' with other attributes.

The bucket's name is accessed with 'bucket', the ARN with 'arn', and the region with 'region' attributes.

Practice

1. In Terraform, what is the main purpose of resource arguments inside a resource block?

easy

A. To delete the resource from the cloud provider

B. To display information about the resource after creation

C. To output the resource's ID automatically

D. To specify the settings needed to create the resource

Solution

1. Step 1: Understand resource arguments

   Resource arguments define the configuration details needed to create the resource, like size or name.

2. Step 2: Differentiate arguments from attributes

   Attributes provide info after creation, but arguments tell Terraform what to build.

3. Final Answer:

   To specify the settings needed to create the resource -> Option D

4. Quick Check:

   Arguments configure resources = C [OK]

Hint: Arguments set resource details; attributes show info after creation [OK]

Common Mistakes:

• Confusing arguments with attributes
• Thinking arguments output resource info
• Assuming arguments delete resources

2. Which of the following is the correct syntax to define a resource argument in Terraform?

easy

A. resource "aws_instance" "example" { name = "my-instance" }

B. resource aws_instance example { name: "my-instance" }

C. resource "aws_instance" "example" (name = "my-instance")

D. resource "aws_instance" "example" [name = "my-instance"]

Solution

1. Step 1: Review Terraform resource block syntax

   Terraform uses curly braces {} to define resource arguments inside a resource block.

2. Step 2: Check correct key-value assignment

   Arguments use equals sign (=) with quoted strings for values inside the braces.

3. Final Answer:

   resource "aws_instance" "example" { name = "my-instance" } -> Option A

4. Quick Check:

   Curly braces and = sign = A [OK]

Hint: Use braces {} and = for arguments in resource blocks [OK]

Common Mistakes:

• Using parentheses or brackets instead of braces
• Using colon (:) instead of equals (=)
• Omitting quotes around strings

3. Given this Terraform resource snippet:

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

output "instance_id" {
  value = aws_instance.web.id
}

What will the output value show after deployment?

medium

A. The instance type of the created instance

B. The unique ID assigned to the created instance

C. The AMI ID used to create the instance

D. An error because output cannot access resource attributes

Solution

1. Step 1: Identify the output value expression

   The output uses aws_instance.web.id which is the attribute for the instance's unique ID.

2. Step 2: Understand resource attributes

   Attributes like id provide info about the created resource, here the instance ID.

3. Final Answer:

   The unique ID assigned to the created instance -> Option B

4. Quick Check:

   Output shows resource attribute id = A [OK]

Hint: Output value = resource.attribute (id is unique ID) [OK]

Common Mistakes:

• Confusing arguments with attributes
• Thinking output shows argument values
• Assuming output cannot access resource attributes

4. You wrote this Terraform resource:

resource "aws_s3_bucket" "mybucket" {
  bucket = my-bucket-name
  acl    = "private"
}

Terraform plan fails with an error. What is the problem?

medium

A. The bucket name must be in quotes as a string

B. The acl argument is invalid for S3 buckets

C. Resource type aws_s3_bucket is incorrect

D. Missing required provider block

Solution

1. Step 1: Check argument value types

   The bucket argument value my-bucket-name is not quoted, so Terraform treats it as a variable or error.

2. Step 2: Confirm correct string syntax

   Bucket names must be strings, so they need quotes like "my-bucket-name".

3. Final Answer:

   The bucket name must be in quotes as a string -> Option A

4. Quick Check:

   String values need quotes = D [OK]

Hint: Always quote string argument values in resource blocks [OK]

Common Mistakes:

• Forgetting quotes around string values
• Assuming acl is invalid for S3 buckets
• Thinking provider block is always required in snippet

5. You want to create multiple AWS EC2 instances with different names and instance types using a single resource block. Which Terraform feature lets you define arguments dynamically for each instance?

hard

A. Defining multiple resource blocks manually

B. Using output blocks to set arguments

C. Using resource count with indexed arguments

D. Using provider alias for each instance

Solution

1. Step 1: Understand dynamic resource creation

   Terraform's count argument allows creating multiple instances of a resource with indexed arguments.

2. Step 2: Apply count with argument interpolation

   You can use count.index to assign different names and types dynamically in one resource block.

3. Final Answer:

   Using resource count with indexed arguments -> Option C

4. Quick Check:

   Count enables multiple dynamic resources = B [OK]

Hint: Use count and count.index to create multiple resources dynamically [OK]

Common Mistakes:

• Manually duplicating resource blocks instead of using count
• Trying to set arguments via outputs
• Misusing provider aliases for resource count