Module sources (local, registry, git) in Terraform - Mini Project: Build & Apply

Using Terraform Module Sources: Local, Registry, and Git

📖 Scenario: You are managing infrastructure with Terraform. You want to reuse code by using modules from different sources: a local folder, the Terraform Registry, and a Git repository.

🎯 Goal: Build a Terraform configuration that uses three modules: one from a local path, one from the Terraform Registry, and one from a Git repository. This will help you organize and reuse your infrastructure code efficiently.

📋 What You'll Learn

Create a Terraform configuration file named main.tf.

Add a module named local_module sourced from a local folder ./modules/local_module.

Add a module named registry_module sourced from the Terraform Registry terraform-aws-modules/vpc/aws with version 3.14.2.

Add a module named git_module sourced from a Git repository https://github.com/hashicorp/example.git using the main branch.

💡 Why This Matters

🌍 Real World

Terraform modules help organize and reuse infrastructure code efficiently across projects and teams. Using different module sources allows flexibility in managing infrastructure components.

💼 Career

Understanding how to use modules from local paths, registries, and Git repositories is essential for infrastructure engineers and DevOps professionals working with Terraform.

1

Create the initial Terraform configuration with a local module source

Create a file named main.tf and add a module block named local_module with the source set to ./modules/local_module.

Terraform

# Your code here

Need a hint?

Use the module block with the exact name local_module and set source to ./modules/local_module.

2

Add a module from the Terraform Registry

In main.tf, add a module block named registry_module with the source set to terraform-aws-modules/vpc/aws and version set to 3.14.2.

Terraform

module "local_module" {
  source = "./modules/local_module"
}

# Your code here

Need a hint?

Use the exact module name registry_module, set source to the registry path, and specify version as 3.14.2.

3

Add a module sourced from a Git repository

In main.tf, add a module block named git_module with the source set to git::https://github.com/hashicorp/example.git?ref=main.

Terraform

module "local_module" {
  source = "./modules/local_module"
}

module "registry_module" {
  source  = "terraform-aws-modules/vpc/aws"
  version = "3.14.2"
}

# Your code here

Need a hint?

Use the exact module name git_module and set source to the Git URL with git:: prefix and ?ref=main to specify the branch.

4

Complete the Terraform configuration with required Terraform block

Add a terraform block at the top of main.tf specifying required_version as >= 1.0.0 and a required_providers block with aws provider source hashicorp/aws and version ~> 4.0.

Terraform

# Your code here
module "local_module" {
  source = "./modules/local_module"
}

module "registry_module" {
  source  = "terraform-aws-modules/vpc/aws"
  version = "3.14.2"
}

module "git_module" {
  source = "git::https://github.com/hashicorp/example.git?ref=main"
}

Need a hint?

Start your file with a terraform block specifying the required Terraform version and the AWS provider source and version.