May 2017
Beginner
268 pages
6h 1m
English
Content preview from Puppet 4.10 Beginner's Guide - Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Writing Hiera data
As we've seen, Hiera data is stored in text files that are structured using the format called YAML (short for YAML Ain't Markup Language), which is a common way of organizing data. Here's another snippet from our sample Hiera data file (hiera_sample.yaml):
---
...
syslog_server: '10.170.81.32'
monitor_ips:
- '10.179.203.46'
- '212.100.235.160'
- '10.181.120.77'
- '94.236.56.148'
cobbler_config:
manage_dhcp: 1
pxe_just_once: 1There are actually three different kinds of Hiera data structures present: single values, arrays, and hashes. We'll examine these in detail in a moment.
File header
YAML files begin, like the previous example, with three dashes and a newline (---). This is part of the YAML format, not a Hiera feature; it's ...
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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.
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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.