Book Image

Learning SaltStack - Second Edition

By : Colton Myers
Book Image

Learning SaltStack - Second Edition

By: Colton Myers

Overview of this book

SaltStack is one of the best infrastructure management platforms available. It provides powerful tools for defining and enforcing the state of your infrastructure in a clear, concise way. With this book learn how to use these tools for your own infrastructure by understanding the core pieces of Salt. In this book we will take you from the initial installation of Salt, through running their first commands, and then talk about extending Salt for individual use cases. From there you will explore the state system inside of Salt, learning to define the desired state of our infrastructure in such a way that Salt can enforce that state with a single command. Finally, you will learn about some of the additional tools that salt provides, including salt-cloud, the reactor, and the event system. We?ll finish by exploring how to get involved with salt and what'?s new in the salt community. Finally, by the end of the book, you'll be able to build a reliable, scalable, secure, high-performance infrastructure and fully utilize the power of cloud computing.
Table of Contents (17 chapters)
Learning SaltStack Second Edition
About the Author
About the Reviewer

Exploring the source

By design, Salt makes it very easy to write your own custom execution modules and functions. It abstracts away much of the nitty-gritty about writing Python for system administration, yet leaves you with all the power of Python to get things done.

This means that we can write Salt modules that integrate with our own internal tools or proprietary software. We can even write quick modules just to reorganize or reformat data for use in other parts of Salt.

There will be more on that later. For now, let's inspect our first remote execution function in Salt, which is as follows:

def sleep(length):
    Instruct the minion to initiate a process that will sleep
    for a given period of time.

    CLI Example:

    .. code-block:: bash

        salt '*' test.sleep 20
    return True

This is the code for test.sleep, a function that we ran in the previous chapter. (Remember that execution modules take the form <module>.<function...