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)

Looping over object collections

We have seen in the previous recipes of the chapter the use of the count property, which allows us to provision N identical resources, as well as the use of map variables, which allow key-value objects.

In this recipe, we will discuss how to provision N resources of the same type but with different properties using the loop functionalities included in Terraform since version 0.12.

Getting ready

To get started, we start with a basic Terraform configuration that allows you to deploy a single App Service in Azure.

The basic Terraform configuration is as follows:

resource "azurerm_app_service" "app" {
name = "${var.app_name}-${var.environement}"
location = azurerm_resource_group.rg-app.location
resource_group_name =
app_service_plan_id =

The source code for this recipe is available at