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)

Exporting the output in JSON

We discussed in the Looping over object collections recipe of Chapter 3, Building Dynamic Environments with Terraform, the use of Terraform's outputs that allow you to have output values for the execution of the Terraform configuration. Indeed, we have seen how to declare an output in the Terraform configuration, and we learned that these outputs and their values were displayed at the end of the execution of the terraform apply command.

The advantage of these outputs is that they can be retrieved by a program and thus be used for another operation; for example, in a CI/CD pipeline.

In this recipe, we will see how the values of the outputs can be retrieved in JSON format so that they can be used in an external program.

Getting ready

For this recipe, we will use only the Terraform configuration that we studied in Chapter 3, Building Dynamic Environments with Terraform, and whose sources can be found here: