Book Image

Getting Started with Terraform

By : Kirill Shirinkin
Book Image

Getting Started with Terraform

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 (15 chapters)
Getting Started with Terraform
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 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 many ways that are there to configure the 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 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 of a server...