Book Image

Terraform Cookbook

By : Mikael Krief
Book Image

Terraform Cookbook

By: Mikael Krief

Overview of this book

HashiCorp Configuration Language (HCL) has changed how we define and provision a data center infrastructure with the launch of Terraform—one of the most popular and powerful products for building Infrastructure as Code. This practical guide will show you how to leverage HashiCorp's Terraform tool to manage a complex infrastructure with ease. Starting with recipes for setting up the environment, this book will gradually guide you in configuring, provisioning, collaborating, and building a multi-environment architecture. Unlike other books, you’ll also be able to explore recipes with real-world examples to provision your Azure infrastructure with Terraform. Once you’ve covered topics such as Azure Template, Azure CLI, Terraform configuration, and Terragrunt, you’ll delve into manual and automated testing with Terraform configurations. The next set of chapters will show you how to manage a balanced and efficient infrastructure and create reusable infrastructure with Terraform modules. Finally, you’ll explore the latest DevOps trends such as continuous integration and continuous delivery (CI/CD) and zero-downtime deployments. By the end of this book, you’ll have developed the skills you need to get the most value out of Terraform and manage your infrastructure effectively.
Table of Contents (10 chapters)

Using the Terraform module generator

We learned how to create, use, and share a Terraform module and we studied the module's files structure good practices, which consists of having a main file, another for variables, and another that contains the outputs of the module. In the Sharing a Terraform module using GitHub recipe, we also discussed that we could document the use of the module with a file.

Apart from these standard files for the operation of the module, we can also add scripts, tests (which we will see in the Testing Terraform module code with Terratest recipe), and other files.

For company projects with large infrastructures and a lot of resources to be provided with Terraform, we will need to create a lot of Terraform modules.

To facilitate the creation of the structure of the modules, Microsoft has published a tool that allows us to generate the basic structure (also called a template) of a Terraform module.

In this recipe, we will see how to create the base...