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Mastering Chef

By : Mayank Joshi

2.5 (4)

Mastering Chef

2.5 (4)

By: Mayank Joshi

Overview of this book

If you have used Chef before and are interested in automation of infrastructure and want to develop your own tools to manage large-scale infrastructures, then this book is for you.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Introduction to the Chef Ecosystem

1. Introduction to the Chef Ecosystem

Different modes of running Chef

Terminology used in the world of Chef

The anatomy of a Chef run

Setting up a work environment

Summary

2. Knife and Its Associated Plugins

2. Knife and Its Associated Plugins

Introducing Knife

Summary

3. Chef and Ruby

3. Chef and Ruby

Ruby

IRB

Variables and types

Symbols

Basic operations

Conditional statements and loops

Methods

Arrays

Bang methods

Hashes

Classes and objects

Summary

4. Controlling Access to Resources

4. Controlling Access to Resources

The bootstrap process

Authentication

Authorization

Summary

5. Starting the Journey to the World of Recipes

5. Starting the Journey to the World of Recipes

Resources

Recipes

Best practices when writing recipes

Summary

6. Cookbooks and LWRPs

6. Cookbooks and LWRPs

Cookbooks

Custom resources

Summary

7. Roles and Environments

7. Roles and Environments

Managing roles

Managing environments

Setting up an environment on a node

Role and environment attributes

Environment run lists

Summary

8. Attributes and Their Uses

8. Attributes and Their Uses

Attribute naming

Different types of attributes

Different sources of attributes

Attribute precedence

Attribute whitelisting

Summary

9. Ohai and Its Plugin Ecosystem

9. Ohai and Its Plugin Ecosystem

Running the Ohai binary

Ohai plugins

Custom plugins

Summary

10. Data Bags and Templates

10. Data Bags and Templates

Data bags

Templates

Summary

11. Chef API and Search

11. Chef API and Search

Prerequisites for using Chef API

Authentication of requests

Endpoints

Search

Ridley

Summary

12. Extending Chef

12. Extending Chef

Custom Knife plugins

Custom Chef handlers

Summary

13. (Ab)Using Chef

13. (Ab)Using Chef

The dynamic server list in Capistrano using Chef

Capistrano style deployments using Chef's "deploy" resource

Extending Chef to bootstrap distributed systems

Test-driven development with Chef

Types of tests

Summary

Index

Index

Customer Reviews

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Ridley

Ridley is a Chef API client written in Ruby, which can be used to perform all the operations we looked at earlier, in a very elegant way.

Ridley is available as a gem and can be installed using the following command:

gem install ridley

Before we can use Ridley in our application, we need to require the library. This can be done using the standard Ruby require:

require 'ridley'

Once the library has been required, we just need to create our ridley client and use it to perform all the actions:

ridley = Ridley.new(
  server_url: "CHEF_SERVER_URL",
  client_name: "CLIENT_NAME",
  client_key: "PATH_TO_CLIENT_KEY"
)

You can also provide encrypted_data_bag_secret as a key, which can be used to provide a secret that can be used to decrypt the encrypted data bags.

You can use different functions exposed by Ridley to either retrieve or create objects on the Chef server. For example, the following example will help us get a list of all the users configured on...

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