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)

Creating a Terraform module and using it locally

A Terraform module is a Terraform configuration that contains one or more Terraform resource. Once created, this module can be used in several Terraform configuration files either locally or even remotely.

In this recipe, we will look at the basics of a Terraform module with the steps involved in creating a module and using it locally.

Getting ready

To start this recipe, we will use the Terraform configuration that we have already written in the Provisioning infrastructure in multiple environments recipe in Chapter 2, Writing Terraform Configuration, and whose sources can be found at https://github.com/PacktPublishing/Terraform-Cookbook/tree/master/CHAP05/sample-app.

The module we will create in this recipe will be in charge of providing a Service Plan, one App Service, and an Application Insights resource in Azure. Its source code is available here: https://github.com/PacktPublishing/Terraform-Cookbook/tree/master/CHAP05/moduledemo/Modules...