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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
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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

Resources


A resource is nothing but a Ruby block with four components – a type, a name, one or more attributes, and one or more actions. The following is a typical way to declare a resource in a Chef recipe:

type "name" do
   attribute "value"
   action :type_of_action
end

All actions have a default value. For example, the package resource's default action is :install and hence, if we just want to install a package, we can just say:

package "package_name"

This will take care of the installation of the latest available version of the package called package_name.

The chef-client handles the processing of recipes in two phases. In the first phase, resource collection is built. In this phase, all the recipes mentioned in run_list are evaluated in the order specified. All the resources described in the recipes are identified and collected into a collection. All the libraries are loaded first to ensure that all Ruby classes and language extensions are available. This is followed by the loading of attributes...

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