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Mastering Chef

You're reading from   Mastering Chef Build, deploy, and manage your IT infrastructure to deliver a successful automated system with Chef in any environment

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Product type Paperback
Published in Jun 2015
Publisher
ISBN-13 9781783981564
Length 374 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Mayank Joshi Mayank Joshi
Author Profile Icon Mayank Joshi
Mayank Joshi
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Toc

Table of Contents (15) Chapters Close

Preface 1. Introduction to the Chef Ecosystem FREE CHAPTER 2. Knife and Its Associated Plugins 3. Chef and Ruby 4. Controlling Access to Resources 5. Starting the Journey to the World of Recipes 6. Cookbooks and LWRPs 7. Roles and Environments 8. Attributes and Their Uses 9. Ohai and Its Plugin Ecosystem 10. Data Bags and Templates 11. Chef API and Search 12. Extending Chef 13. (Ab)Using Chef Index

Ohai plugins


Ohai comes with a few plugins by default. These plugins form the ecosystem of Ohai and help collect diverse information about the machine. Some of the plugins provide information specific to an operating system, while some of the plugins are specific to languages, and some are specific to platforms. Let's look at a few of them before we move ahead into writing our own custom plugins.

Take a sneak peek into the plugins directory (usually, found in $GEMS_PATH/gems/ohai-xxx/lib/ohai/plugins) and you'll find a bunch of Ruby files lying around.

Some of the useful plugins are kernel, hostname, platform, network, ohai, cloud, ec2, azure, virtualization, languages, and more.

All these plugins are meant to perform a certain task and emit attributes that can be useful for the purpose of the chef-client run.

These plugins are loaded by $GEMS_PATH/gems/ohai-xxx/lib/ohai/system.rb when we invoke the ohai command.

Some of these plugins are meant to perform different actions, depending on the platform...

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