Book Image

Learning Chef

By : Rishabh Sharma, Mitesh Soni
Book Image

Learning Chef

By: Rishabh Sharma, Mitesh Soni

Overview of this book

<p>Chef automation helps to transform infrastructure into simple code. This means that building, rebuilding, configuration, and scaling to meet your customer's needs is possible in just a few minutes in a real-time environment.</p> <p>This book begins with the conceptual architecture of Chef, walking you through detailed descriptions of every Chef element. You will learn the procedure to set up your workstation and how to create a Cookbook in a hosted Chef environment.</p> <p>Private Chef Server setup is covered in depth, with information on the necessity of on-premise Private Chef deployment, benefits, and installation and configuration procedures for the different types of Private Chef servers including standalone, tiered, and high-availability.</p> <p>This book sheds light on industry best practices with practical Chef scenarios and examples.</p>

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Learning Chef
Rishabh Sharma | Mitesh Soni
Mar, 2015 | 316 pages
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Table of Contents (17 chapters)
Learning Chef
Learning Chef
Credits
Credits
About the Authors
About the Authors
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
An Overview of Automation and Advent of Chef
An Overview of Automation and Advent of Chef
Automation
Why automation is needed
Introduction to Chef
Existing automation tools and comparison with Chef
Self-test questions
Summary
2
Different Components of Chef's Anatomy
Different Components of Chef's Anatomy
The Chef automation
The Chef framework
Chef components
The Chef server API
GitHub
Chef-solo
The Chef community
Chef-run
Integration of Chef with Vagrant
A quick hands-on experience of a Hosted Chef server
Self-test questions
Summary
3
Workstation Setup and Cookbook Creation
Workstation Setup and Cookbook Creation
The VirtualBox installation
The Vagrant installation
The Git installation
Installation and configuration of a workstation
Workstation setup - creating a Chef repository
Launching a virtual machine with Vagrant and a workstation setup
Creating and uploading a simple cookbook
Troubleshooting
Self-test questions
Summary
4
Learning about Cookbooks
Learning about Cookbooks
Cookbook types
Components of a cookbook
Attributes
Definitions
Files
Libraries
Resources and providers
Syntax of resources
Example of resources
Templates
Metadata
Self-test questions
Summary
5
Managing the Nodes
Managing the Nodes
Adding and deleting a node
Bootstrapping target nodes
Introducing search
Introducing data bags
Introducing handler
Self-test questions
Summary
6
Working with an Open Source Chef Server
Working with an Open Source Chef Server
System requirements
Installing an open source Chef server
Installing an open source Chef server on a VMware Fusion virtual machine – Ubuntu 12.04
Using community cookbooks
Upgradation of the open source Chef server
Self-test questions
Summary
7
Working with the On-premises Chef Server Setup
Working with the On-premises Chef Server Setup
The on-premises Chef server
Benefits of on-premises Chef
Types of on-premises Chef installations
Downloading the installation package
Prerequisites for the standalone on-premises Chef installation
Installing standalone on-premises Chef
Prerequisites for the tiered on-premises Chef installation
Installing tiered on-premises Chef
Prerequisites for the high-availability Chef installation
Installing the high-availability Chef server
Managing on-premises Chef
Self-test questions
Summary
8
Managing Chef on Cloud Infrastructure
Managing Chef on Cloud Infrastructure
What is cloud computing?
Why Chef with cloud infrastructure?
AWS EC2 bootstrapping using Chef
Rackspace Cloud server bootstrapping
VMware and Chef
Self-test questions
Summary
9
Best Practices while Using Chef
Best Practices while Using Chef
Chef anti-patterns and patterns
Testing cookbooks
Best practices for effective usage of Chef
Self-test questions
Summary
10
Case Studies on Different Chef Deployments
Case Studies on Different Chef Deployments
Case studies of Hosted Chef deployments
Case studies of Private Chef deployment
Case studies of the open source Chef deployment
Case studies of the Chef-solo deployment
Self-test questions
Summary
Index
Index

Troubleshooting

Here, we will see all the possible error types which user may encounter during workstation setup and cookbook creation and their troubleshooting steps accordingly.

Error code – type 1

If you get an error of this type:

INFO: Client key /etc/chef/client.pem is not present - registering
INFO: HTTP Request Returned 401 Unauthorized: Failed to authenticate as ORGANIZATION-validator. Ensure that your node_name and client key are correct.
FATAL: Stacktrace dumped to c:/chef/cache/chef-stacktrace.out
FATAL: Net::HTTPServerException: 401 "Unauthorized"

Meaning

This means that the organization-validator.pem file is not getting authenticated. It is a Chef 401 "Unauthorized" error.

Troubleshooting steps

In order to troubleshoot this, the validation key should be regenerated.

In the preceding code, check whether the file is referenced in validation_key (usually, ORGANIZATION-validator.pem) exists in one of these locations:

    ~/.chef
    ~/projects/current_project/.chef
    /etc/chef

Check...

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