Book Image

Getting Started with Terraform - Second Edition

By : Kirill Shirinkin
1 (1)
Book Image

Getting Started with Terraform - Second Edition

1 (1)
By: Kirill Shirinkin

Overview of this book

Terraform is a tool used to efficiently build, configure, and improve the production infrastructure. It can manage the 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 the complete management of infrastructure with Terraform, starting with the basics of using providers and resources. It 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. The book ends with the complete workflow of managing a production infrastructure as code—this is achieved with the help of version control and continuous integration. The readers will also learn how to combine multiple providers in a single template and manage different code bases with many complex modules. It focuses on how to set up continuous integration for the infrastructure code. The readers will be able to use Terraform to build, change, and combine infrastructure safely and efficiently.
Table of Contents (15 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Chapter 6. Scaling and Updating Infrastructure

Honestly, you already know almost everything about Terraform now. Creating networks in the Cloud? Easy. Starting a new virtual server and provisioning it with your favorite configuration management tool? Isn't it a piece of cake?! You know how to write a beautiful template, refactor it into modules, and configure it with the many ways that there are to configure a template.

Perhaps you even moved your whole infrastructure to Terraform. But then you realize that creating infrastructure with Terraform is just the beginning; that is, your infrastructure is there to stay, and it needs to be updated continuously as your business requirements change.

There are many challenges in managing the resources you have. We need to figure out how to perform changes without interrupting the service. We will take a look at the following and some other topics in this chapter:

  • The means of scaling the service up and down with Terraform
  • Performing an in-place upgrade...