Creating a child module in Terraform - Quick Revision & Summary

Recall & Review

beginner

What is a child module in Terraform?

A child module is a reusable set of Terraform configuration files that can be called from another module or root configuration to organize and share infrastructure code.

beginner

How do you call a child module in Terraform?

You use the module block with a source attribute pointing to the child module's directory or repository.

beginner

Why use child modules in Terraform?

Child modules help organize code, promote reuse, reduce duplication, and make infrastructure easier to manage and maintain.

intermediate

What files are typically included in a Terraform child module?

A child module usually contains main.tf for resources, variables.tf for inputs, outputs.tf for outputs, and optionally versions.tf for provider versions.

intermediate

How do you pass variables to a child module?

You define variables in the child module and pass values to them in the parent module's module block using key-value pairs matching the variable names.

What attribute specifies the location of a child module in Terraform?

A source

B path

C location

D module_path

The source attribute tells Terraform where to find the child module's code.

Which file usually contains resource definitions in a child module?

A variables.tf

B outputs.tf

C main.tf

D providers.tf

main.tf typically holds the resource definitions.

How do you reuse infrastructure code in Terraform?

A By copying and pasting code

B By creating child modules

C By using environment variables

D By running terraform init

Child modules allow you to reuse and organize infrastructure code efficiently.

What is the purpose of variables.tf in a child module?

A To define input variables for the module

B To output values from the module

C To configure providers

D To store backend configuration

variables.tf defines inputs that the module expects.

Which block do you use in the root module to include a child module?

A resource

B output

C provider

D module

The module block is used to call child modules.

Explain how to create and use a child module in Terraform.

Think about folder structure and how to connect modules.

Describe the benefits of using child modules in Terraform projects.

Consider how modular code helps in software projects.