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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

Using template files

Note

The code for this section is under the chap05/remote-state directory in the GitHub repo of this book.

Terraform provides a built-in function called templatefile (read more about it here: https://developer.hashicorp.com/terraform/language/functions/templatefile).

This function takes a file that uses Terraform expressions and evaluates them. We can use variables, resource attributes, and other expressions in the file, and Terraform evaluates those expressions and replaces them with the values in the files. Let’s see this in practice. First, we define a template file. By convention, template files use the *.tftpl extension:

chap05/compute-instance/startup.tftpl

#! /bin/bash
apt update
apt -y install apache2
cat <<EOF > /var/www/html/index.html
<html><body><p>Hello World!</p>
<p>The CloudSQL connection name is: ${connection_name}</body></html>

During runtime, Terraform evaluates the data...

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