June 2023
Intermediate to advanced
416 pages
11h 5m
English
Content preview from Puppet 8 for DevOps Engineers
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4
Variables and Data Types
This chapter will cover how Puppet handles variables and, in particular, how Puppet differs from most declarative languages in terms of how they are used and declared. We will look at the core data types that are used to define what the value of a variable can contain and how it can be interacted with. Then, we will look at how data types and variables allow the classes we discussed in Chapter 3 to receive external data and handle default values.
Arrays and hashes will be discussed in detail, including how to declare them, access values, and manipulate them with operations. The Sensitive data type will be shown, which you can use to secure values in logs and reports while making the limitations of this data type and ...
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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.