README.md

Terraform Modules

Terraform Modules

Terraform modules are self-contained, reusable units of infrastructure configuration.
Terraform modules encapsulate a collection of Terraform configuration files (typically .tf files) within a single directory.
They act as reusable building blocks for your infrastructure.

Benefits of modules:

Code reusability: Define infrastructure components once and reuse them throughout your configurations or across projects.
Improved organization: Break down complex configurations into smaller, manageable modules for better readability and maintainability.
Collaboration: Share modules with colleagues or within a team, promoting consistency and reducing duplication of effort.

Module Structure:

A typical Terraform module directory may contain:

main.tf : The main configuration file defining the module's resources using providers.
variables.tf : Defines variables that can be customized when using the module.
outputs.tf : Defines values that the module can expose to the calling configuration.
README.md : optional file for documentation

Using Modules:

Modules are called (or instantiated) within other Terraform configurations using the module block.
You can provide values for the module's variables during instantiation, customizing its behavior.
Outputs from a module can be referenced in the calling configuration to use the module's results.
Module arguments: You can specify constraints on variable types and allowed values to ensure proper usage.
Local vs. Remote Modules: Modules can reside in the local filesystem (local modules) or be fetched from external sources like the Terraform Registry (remote modules) for sharing and collaboration.

Benefits of Using Modules:

Reduced code duplication: Write code once and reuse it across your infrastructure.
Improved maintainability: Easier to update and manage infrastructure components in one place.
Modular design: Promotes a more modular and scalable approach to infrastructure configuration.