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

Immutable Infrastructure

When we had bare metal servers, it took a bit of time to provision them. Even today, if you want to get new hardware, it can take days to get them connected and running. Needless to say that you would want to keep them running as long as possible, given the cost of replacement or adding a new one. Then, as automation is a must, instead of configuring this bare metal servers by hand, a set of configuration management tools appeared.

Even with these tools, though, servers are prone to configuration drift, they can diverge a lot from one another and people would still go via SSH and perform changes not captured into infrastructure code.

Don't get me wrong: configuration management is still a must. But context changed a bit after virtualization got a huge adoption in the form of Cloud providers. The time required to create a server was cut down to few minutes, instead of hours and days. More importantly, time required to recreate a server is also really low, compared with...