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Terraform for Google Cloud Essential Guide

Terraform for Google Cloud Essential Guide

By : Bernd Nordhausen
4.7 (11)
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Terraform for Google Cloud Essential Guide

Terraform for Google Cloud Essential Guide

4.7 (11)
By: Bernd Nordhausen

Overview of this book

Google Cloud has adopted Terraform as the standard Infrastructure as Code tool. This necessitates a solid understanding of Terraform for any cloud architect or engineer working on Google Cloud. Yet no specific resources are available that focus on how to use Terraform on Google Cloud. This is the first book that teaches Terraform specifically for Google Cloud. You will take a journey from the basic concepts through to deploying complex architectures using Terraform. Using extensive code examples, you will receive guidance on how to authenticate Terraform in Google Cloud. As you advance, you’ll get to grips with all the essential concepts of the Terraform language as applied to Google Cloud and deploy complete working architectures at the push of a button. Finally, you’ll also be able to improve your Terraform workflow using Google Cloud native and third-party tools. By the end of this Terraform book, you will have gained a thorough understanding of Terraform and how to use it on Google Cloud, and be able to develop effective Terraform code, build reusable code, and utilize public domain Terraform modules to deploy on Google Cloud faster and more securely.
Table of Contents (16 chapters)
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1
Part 1: Getting Started: Learning the Fundamentals
7
Part 2: Completing the Picture: Provisioning Infrastructure on Google Cloud
11
Part 3: Wrapping It Up: Integrating Terraform with Google Cloud

Summary

In this chapter, we introduced Terraform modules. Modules are at the heart of IaC as they are the key component to reusing code quickly and efficiently. The structure of a module follows the same structure we have been using to write Terraform code. We declare variables in variables.tf, place our main code in main.tf, and use the outputs.tf file to expose information to the root module.

However, it’s important to use modules wisely. A module should not be a thin wrapper to existing resource definitions. A well-designed module adds value by providing a layer of abstraction. This can include provisioning multiple resources in a single module and adding organizational patterns and policies. In our albeit simple example, we provisioned not only a server but also a static IP address, and we added a layer of abstraction by providing a mapping of simple server size to instance types.

When you start writing Terraform code, always think about modules. Local modules help...

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