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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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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

Authentication

Communication with the Chef server can be initiated by different mechanisms such as chef-client, Knife, and using API in code. Let's see how authentication works under different circumstances.

chef-client

Every time a chef-client needs to communicate with the Chef server to fetch some data required for bootstrapping a machine, the chef-client needs to authenticate itself with the Chef server. It does so by using a private key located at /etc/chef/client.pem. However, as we saw in the bootstrap process, when a chef-client is executed for the very first time, there is no private key on the concerned machine. Hence, a chef-client makes use of the private key assigned to the chef-validator (/etc/chef/validation.pem). Once the initial request is authenticated, a chef-client will register with the Chef server using validation.pem, and subsequently the Chef server will return back a new private key to use for future communication. Once the initial chef-client run is over, validation...

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