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)

Getting a list of Azure resources in Terraform

In the previous recipe, we learned the practical case of using a data block to obtain the properties of an Azure resource.

We will look in this recipe at a data source in the azurerm provider that is generic and allows you to get information about any provisioned resource in Azure.

Getting ready

In this recipe, we will write a Terraform configuration that adds security rules to several Azure Network Security Groups (NSGs) already provisioned (manually or by Terraform). Its purpose is to add these rules to all NSGs that have the tag DEFAULTRULES=TRUE.

In addition, we have already created three NSGs in the Resource Group called RG-DEMO. Among these NSGs, only NSG1 and NSG2 have the tag DEFAULTRULES=TRUE.

The source code for this recipe is available here:

How to do it…

Perform the following steps in order to get Azure resources:

  1. In the file...