Book Image

Mastering SaltStack - Second Edition

Book Image

Mastering SaltStack - Second Edition

Overview of this book

SaltStack is a powerful configuration management and automation suite designed to manage servers and tens of thousands of nodes. This book showcases Salt as a very powerful automation framework. We will review the fundamental concepts to get you in the right frame of mind, and then explore Salt in much greater depth. You will explore Salt SSH as a powerful tool and take Salt Cloud to the next level. Next, you’ll master using Salt services with ease in your infrastructure. You will discover methods and strategies to scale your infrastructure properly. You will also learn how to use Salt as a powerful monitoring tool. By the end of this book, you will have learned troubleshooting tips and best practices to make the entire process of using Salt pain-free and easy.
Table of Contents (20 chapters)
Mastering SaltStack Second Edition
Credits
Foreword
About the Author
About the Reviewer
www.PacktPub.com
Preface

Using the TCP transport


Unlike RAET, which uses a different type of keys, the TCP transport uses the same keys as the ZeroMQ transport. This means that you can switch from ZeroMQ to TCP and back as you wish, bearing in mind that the master and minions must also be restarted to pick up the change.

Both master and minion use the same setting to switch to the TCP transport:

transport: tcp 

However, as of the Carbon release of Salt, minions may instead be configured to use a setting of detect:

transport: detect 

When a minion is configured this way, it will check with the master while starting up to see which transport it is configured to use. It will first check to see whether the master is configured to use zeromq. If it can't connect that way, then it will attempt to connect using tcp. If that also fails, then the minion will behave as if the master is unavailable.

Whether you expect to use tcp in the future or stick with zeromq, I recommend you give the detect option a trial run and keep it...