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

Taking a quick look at Consul

If we just count stars on GitHub, then Consul is probably the most popular HashiCorp tool. It's one of the few service discovery tools on the market and probably the only one that can be considered modern. The closest alternatives are ZooKeeper and etcd. ZooKeeper is known for being hard to set up and maintain and for being kind of too slow (written in Java) and old already (and you don't want to use anything older than few years these days, do you?). The etcd, though, is a very popular choice, lacks most of the features required for service discovery, and is just a storage rather than a complete solution.

Consul is both service discovery tool and a key/value storage. You need to install Consul agent on each node in order to get it working. As Consul is written in Go, the installation is not very complex: drop the binary and few configuration files to the server and configure system service (systemd, upstart or whatever you prefer) to run it. No other prerequisites...