July 2014
Beginner
280 pages
5h 36m
English
Content preview from Mastering PuppetBecome 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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Defined types
A situation where you have a block of code that is repeated within a single node can be managed with defined types. You create a defined type with a call to define. define is a block of Puppet code that receives a set of parameters when instantiated. Our previous database example could be rewritten as a defined type to allow more than one type of database server to be installed on a single node.
Another example of where a defined type is useful is building filesystems with the LVM module. When we used the LVM module to build a filesystem, there were three steps required: we needed a filesystem (a logical volume or LVM resource), a location to mount the filesystem (a file resource), and a mount command (a mount resource). Every time ...
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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.