June 2023
Intermediate to advanced
416 pages
11h 5m
English
Content preview from Puppet 8 for DevOps Engineers
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9
Handling Data with Puppet
This chapter will focus on how to handle data using Puppet. It will look at Hiera, Puppet’s key-value data lookup tool, and how it ensures that Puppet’s reusable code is made more configurable without burdening it with excessive logic and variables. The basic structure of Hiera will be reviewed, showing how it stores data in hierarchies that provide a rules-based key lookup without a lot of fuss and how it can look up keys in this data to return values using different backends, which are implementations such as YAML files of data or API calls to applications. The use of automatic parameter lookup will be discussed showing how this allows the parameterized profiles to receive data automatically and how the lookup function ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.