May 2017
Beginner
268 pages
6h 1m
English
Content preview from Puppet 4.10 Beginner's Guide - Second Edition
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Chapter 5. Variables, expressions, and facts
It is impossible to begin to learn that which one thinks one already knows.
—Epictetus
In this chapter, you will learn about Puppet variables and data types, expressions, and conditional statements. You will also learn how Puppet manifests can get data about the node using Facter, find out which are the most important standard facts, and see how to create your own external facts. Finally, you will use Puppet's each function to iterate over arrays and hashes, including Facter data.
Introducing variables
A variable in Puppet is simply a way of giving a name to a particular value, which we can then use wherever ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.