Book Image

Mastering SaltStack - Second Edition

By : Joseph Hall
Book Image

Mastering SaltStack - Second Edition

By: Joseph Hall

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
About the Author
About the Reviewer

Examining the TCP transport

The previous example illustrates how a complex set of processes can make use of a number of different concepts at once. If you consider that each cook must follow a set of tasks (a recipe) in the correct order in order to produce a dish, our example makes use of asynchronous, parallel, concurrent, and synchronous task management, combined with queue-based task distribution, all flowing together harmoniously.

The TCP transport makes use of most of these concepts, though the concurrent nature of RAET has been replaced with an asynchronous model.

The TCP transport makes use of a Python library called Tornado, which is an asynchronous networking library. With the introduction of the TCP transport, the ZeroMQ transport was also retrofitted to be managed by the Tornado library. To sum up, this means that while SSH is synchronous and RAET is concurrent, ZeroMQ and TCP are both asynchronous. However, while the ZeroMQ transport uses ZeroMQ to handle queuing and communication...