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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 the self_link attribute

Note

The code for this section is under chap02/self-link in the GitHub repo of this book.

In the for_each example, we used the name attribute of the subnetwork resource to specify the subnet for our VM:

subnetwork = google_compute_subnetwork.this['iowa'].name

In Google Cloud, nearly every resource has a unique name, but it is better to use the self_link attribute, which is a unique Google Cloud construct. To understand self_link, let’s look at the details of the Iowa subnet using the gcloud command:

$ gcloud compute networks subnets describe iowa \
--region us-central1
..
gatewayAddress: 192.168.1.1
id: '4434945742234922953'
ipCidrRange: 192.168.1.0/24
..
selfLink: https://www.googleapis.com/compute/v1/projects/tf-gcp-01/regions/us-central1/subnetworks/iowa
stackType: IPV4_ONLY

Then look at the same resource using the terraform state show command:

$ terraform state show   'google_compute_subnetwork...

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