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Getting Started with Terraform

Getting Started with Terraform

By : Kirill Shirinkin
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Getting Started with Terraform

Getting Started with Terraform

2 (1)
By: Kirill Shirinkin

Overview of this book

Terraform is a tool used to efficiently build, configure, and improve production infrastructure. It can manage existing infrastructure as well as create custom in-house solutions. This book shows you when and how to implement infrastructure as a code practices with Terraform. It covers everything necessary to set up complete management of infrastructure with Terraform, starting with the basics of using providers and resources. This book is a comprehensive guide that begins with very small infrastructure templates and takes you all the way to managing complex systems, all using concrete examples that evolve over the course of the book. It finishes with the complete workflow of managing a production infrastructure as code – this is achieved with the help of version control and continuous integration. At the end of this book, you will be familiar with advanced techniques such as multi-provider support and multiple remote modules.
Table of Contents (9 chapters)
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Chapter 4.  Storing and Supplying Configuration

So far, we know how to codify our infrastructure into Terraform templates of varying sizes. We know how to structure templates and how to split and reuse them with modules. More that this, we already figured out important concepts behind how Terraform works. But there is an important piece we almost didn't look at: configuration.

A template with only hardcoded data in it is a bad template. You can't reuse it in other projects without modifying it. You always have to update it by hand if some value changes. And you have to store a lot of information that doesn't really belong to the infrastructure template.

In this chapter, we will learn how to make Terraform templates more configurable. First, we will take a lookup variables and all the possible ways to use them. Then, we will learn how to use data resources to retrieve information from outside Terraform template. Finally, we will use built-in provider's capabilities...

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