Browse Library
Sign In Start Free Trial
Close icon Search icon
Account
Browse Library Sign In Start Free Trial

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Learning SaltStack
  • Table Of Contents Toc
Learning SaltStack

Learning SaltStack

By : Myers
4.3 (18)
Buy this Book
close
close
Learning SaltStack

Learning SaltStack

4.3 (18)
By: Myers
Buy this Book

Overview of this book

If you are a system administrator who manages multiple servers, then you know how difficult it is to keep your infrastructure in line. If you've been searching for an easier way, this book is for you. No prior experience with SaltStack is required.
Table of Contents (10 chapters)
close
close
close
Preface
Icon
Preface
Icon
What this book covers
Icon
What you need for this book
Icon
Who this book is for
Icon
Conventions
Icon
Reader feedback
Icon
Customer support
Lock Free Chapter
1
1. Diving In – Our First Salt Commands
Icon
1. Diving In – Our First Salt Commands
Icon
Introducing Salt
Icon
Installing Salt
Icon
Configuring Salt
Icon
A game of ping pong
Icon
Masterless Salt
Icon
Summary
2
2. Controlling Your Minions with Remote Execution
Icon
2. Controlling Your Minions with Remote Execution
Icon
The structure of a remote execution command
Icon
Summary
3
3. Execution Modules – Write Your Own Solution
Icon
3. Execution Modules – Write Your Own Solution
Icon
Exploring the source
Icon
An advanced example
Icon
Summary
4
4. Defining the State of Your Infrastructure
Icon
4. Defining the State of Your Infrastructure
Icon
Our first state
Icon
The pieces of a state declaration
Icon
Expanding to encompass multiple pieces of state
Icon
Dependencies using requisites
Icon
Summary
5
5. Expanding Our States with Jinja2 and Pillar
Icon
5. Expanding Our States with Jinja2 and Pillar
Icon
Adding a new minion
Icon
Jinja2
Icon
Defining secure minion-specific data in pillar
Icon
Summary
6
6. The Highstate and Environments
Icon
6. The Highstate and Environments
Icon
The highstate
Icon
Storing our states in Git with GitFS
Icon
Summary
7
7. Using Salt Cloud to Manage Virtual Minions
Icon
7. Using Salt Cloud to Manage Virtual Minions
Icon
Setting up Salt Cloud
Icon
Managing groups of VMs with map files
Icon
Summary
8
8. The Reactor and the Event System
chevron up
Icon
8. The Reactor and the Event System
Icon
The Salt event system
Icon
Reacting to events
Icon
Summary
9
Index
Icon
Index

The Salt event system

Events are an integral part of almost everything Salt does. However, for the most part, these events are designed to be invisible, to work behind the scenes to provide interprocess communication and make an asynchronous platform feel synchronous in practice.

However, we can also leverage the event system for our own purposes.

Listening for events

Before you learn about reacting to events or firing our own, let's inspect some of these events that are happening all the time in Salt. A script is provided in the Salt source for just this purpose. You can find it on Github at https://github.com/saltstack/salt/blob/develop/tests/eventlisten.py.

Download the script and place it somewhere on your master server. I am going to download it to the /root/ directory on my server, as follows:

# pwd
/root
# wget https://raw.githubusercontent.com/saltstack/salt/v2014.7.0/tests/eventlisten.py
--2014-11-27 00:07:19--  https://raw.githubusercontent.com/saltstack/salt/v2014.7.0/tests/eventlisten...
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Learning SaltStack
End of Section 8
Next Section
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected
Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful
Order Page Read Now

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon