Book Image

Simplifying Service Management with Consul

By : Robert E. Jackson
Book Image

Simplifying Service Management with Consul

By: Robert E. Jackson

Overview of this book

Within the elastic and dynamic nature of cloud computing, efficient and accurate service discovery provides the cornerstone for all communications. HashiCorp Consul facilitates this service discovery efficiently and securely, independent of the operating environment. This book will help you build a solid understanding of both the concepts and applications of HashiCorp Consul. You'll begin by finding out what you can do with Consul, focusing on the conceptual views of configuration samples along with Terraform code to expedite lab environment and hands-on experimentation, which will enable you to apply Consul effectively in your everyday lives. As you advance, you'll learn how to set up your own Consul cluster and agents in a single datacenter or location and understand how Consul utilizes RAFT and GOSSIP protocols for communication. You'll also explore the practical applications of primary Consul use cases, including communication flows and configuration and code examples. With that knowledge, you'll extend Consul across datacenters to discuss the applicability of multiple regions, multiple clouds, and hybrid cloud environments. By the end of this Consul book, you will have the tools needed to create and operate your own Consul cluster and be able to facilitate your service discovery and communication.
Table of Contents (12 chapters)
1
Section 1: Consul Use Cases and Architecture
6
Section 2: Use Cases Deep Dive

Chapter 4: Data Center (Not Trade) Federation

I'm very happy to tell you (and myself) that after that very challenging chapter dealing with Consul security aspects, our discussion about extending your Consul cluster will be much lighter. In fact, as many of the features we'll be discussing in this section are specific to Consul Enterprise, there won't be any exercises!

In the previous chapters, we focused primarily on setting up and securing our Consul clusters. However, as Consul is implemented in enterprise environments, we want to look at how to scale the Consul system itself and extend that Consul functionality across multiple data centers or regions. To understand the expansion of Consul, we'll be reviewing the following topics:

  • Scales – Nope, we won't be discussing reptilian or musical scales, but rather how to scale the Consul system. We've seen in earlier chapters how increasing server clusters can negatively impact the time...