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Simplifying Service Management with Consul

You're reading from Simplifying Service Management with Consul

Product type Book

Published in Nov 2021

Publisher Packt

ISBN-13 9781800202627

Pages 234 pages

Edition 1st Edition

Languages

Concepts

Author (1):

Robert E. Jackson

Table of Contents (12) Chapters

Preface

1. Section 1: Consul Use Cases and Architecture

2. Chapter 1: Consul Overview – Operation and Use Cases

3. Chapter 2: Architecture – How Does It Work?

4. Chapter 3: Keep It Safe, Stupid, and Secure Your Cluster!

5. Chapter 4: Data Center (Not Trade) Federation

6. Section 2: Use Cases Deep Dive

7. Chapter 5: Little Bo Peep Lost Her Service

8. Chapter 6: Connect Four or More

9. Chapter 7: Animate Me

10. Chapter 8: Where Do We Go Now?

11. Other Books You May Enjoy

Methods of discovery – no lawyers required

Whenever I hear the term discovery, I can't help but think about all of the lawyer shows and movies that reference the process. Thankfully, we don't require lawyers as part of the discovery process, but there are several methods available to discover what services our catalog offers. Let's see some of them in the following sections.

DNS

The easiest way for any application to discover the location of services is the same way they've been doing it for years, utilizing DNS. By default, Consul offers DNS on port 8600 on every agent within the Consul cluster. Every node and service can be queried utilizing a Consul domain. For example, if we want to find the address(es) for the nodes hosting the httpd service, we can execute the following command (using the IP address of a Consul node, of course):

$ dig @192.168.100.20 -p 8600 httpd.service.consul

Focusing on the answer section of the query, we can validate...

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Authors (1)

Robert E. Jackson

Robert E. Jackson earned his bachelor of science in electrical engineering from Purdue University in 1997, and since then has found himself in a multitude of pre- and post-sales positions with various successful start-ups, mostly in the network access technology space. He has played multiple roles over the course of his career, including sales engineer, solutions engineer, integration engineer, network engineer, and product manager. Throughout all of these engineering positions he never learned to drive a train, but he was able to experience the digital transformation from traditional data centers to cloud computing from multiple viewpoints. He is currently employed at HashiCorp as a senior solutions engineer, based in the northeast area of the United States.

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