Block syntax and structure in Terraform - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a block in Terraform?

A block is a container in Terraform configuration that groups related settings together, like resources, variables, or providers.

beginner

Name the three main parts of a Terraform block.

1. Block type (like resource or variable)<br>2. Block label(s) (like resource name)<br>3. Block body (the settings inside curly braces {}).

beginner

How do you write a resource block for an AWS S3 bucket named 'mybucket'?

resource "aws_s3_bucket" "mybucket" { bucket = "mybucket" acl = "private" }

intermediate

What is the purpose of labels in a Terraform block?

Labels identify the block uniquely within its type, like naming a resource so Terraform can track it.

intermediate

Can blocks be nested inside other blocks in Terraform? Give an example.

Yes, for example, a resource block can contain nested blocks like 'lifecycle' or 'provisioner' to add extra settings.

What symbol encloses the body of a Terraform block?

A <>

B []

C ()

D {}

Terraform block bodies are enclosed in curly braces {}.

Which part of a Terraform block uniquely identifies a resource?

A Block label

B Block type

C Block body

D Block comment

Block labels uniquely identify resources within their block type.

Which of these is NOT a valid Terraform block type?

A function

B resource

C variable

D provider

'function' is not a Terraform block type; resource, variable, and provider are valid.

How many labels can a resource block have at minimum?

A One

B Two

C Zero

D Three

A resource block requires two labels: the resource type (e.g., aws_s3_bucket) and the name (e.g., mybucket).

What is the correct order of parts in a Terraform block?

A Block body, block type, labels

B Labels, block type, block body

C Block type, labels, block body

D Labels, block body, block type

The order is block type, then labels, then block body.

Describe the structure of a Terraform block and explain the role of each part.

Think about how Terraform groups settings and identifies resources.

Explain how nested blocks work in Terraform and give an example of when you might use one.

Consider extra settings inside a resource.