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)

Executing ARM templates in Terraform

Among all the Infrastructure as Code (IaC) tools and languages, there is one provided by Azure called Azure Resource Manager (ARM), based on JSON format files, that contains the description of the resources to be provisioned.

To learn more about ARM templates, read the following documentation: https://docs.microsoft.com/en-us/azure/azure-resource-manager/templates/overview

When using Terraform to provision resources in Azure, you may need to use resources that are not yet available in the Terraform azurerm provider. Indeed, the azurerm provider is open source and community-based on GitHub, and has a large community of contributors, but this is not enough to keep up with all the changes in Azure's functionalities in real time. This is due to several reasons:

  • New releases of Azure resources are very frequent.
  • The Terraform azurerm provider is highly dependent on the Azure Go SDK (https://github.com/Azure/azure-sdk-for-go), which does not contain...