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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

Managing roles


There are multiple ways to manage roles in the Chef ecosystem.

Using Knife

Knife can be used to create, edit, delete, edit, or show a particular role; alternatively, it can be used to push a role file created using Ruby DSL to the Chef server. Knife can also be used to get a list of all roles defined on the Chef server.

Creating a new role

The knife role create ROLE command can be used to create a new role. Let's use it to create a role called webserver and see the command in action:

$ knife role create webserver

As soon as you issue this command, an editor will open up. The choice of which editor to make use of can be specified by editing the value of the knife[:editor] attribute in your knife.rb file.

The file will look like the following:

{
   "name": "webserver",
   "description": "",
   "json_class": "Chef::Role",
   "default_attributes": {
   },
   "override_attributes": {
   },
   "chef_type": "role",
   "run_list": [
   ],
   "env_run_list": [
   ]
}

This is a simple JSON...

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