Book Image

Extending Puppet - Second Edition

By : Alessandro Franceschi, Jaime Soriano Pastor
Book Image

Extending Puppet - Second Edition

By: Alessandro Franceschi, Jaime Soriano Pastor

Overview of this book

Puppet has changed the way we manage our systems, but Puppet itself is changing and evolving, and so are the ways we are using it. To tackle our IT infrastructure challenges and avoid common errors when designing our architectures, an up-to-date, practical, and focused view of the current and future Puppet evolution is what we need. With Puppet, you define the state of your IT infrastructure, and it automatically enforces the desired state. This book will be your guide to designing and deploying your Puppet architecture. It will help you utilize Puppet to manage your IT infrastructure. Get to grips with Hiera and learn how to install and configure it, before learning best practices for writing reusable and maintainable code. You will also be able to explore the latest features of Puppet 4, before executing, testing, and deploying Puppet across your systems. As you progress, Extending Puppet takes you through higher abstraction modules, along with tips for effective code workflow management. Finally, you will learn how to develop plugins for Puppet - as well as some useful techniques that can help you to avoid common errors and overcome everyday challenges.
Table of Contents (19 chapters)
Extending Puppet Second Edition
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Querying PuppetDB for fun and profit


PuppetDB stores and exposes a large amount of information. What can we do with it? Probably much more than what we might guess now. In this section, we explore in detail the REST endpoints available.

Diving into such details might be useful to better understand what can be queried and maybe trigger new ideas on what we can do with such information.

In these samples, we use curl with HTTP directly from the server where PuppetDB is installed.

/facts endpoint

Show all the facts of all our nodes (be careful, there may be a lot!):

curl 'http://localhost:8080/pdb/query/v4/facts'

Show the IP addresses of all our nodes (a similar search can be for any fact):

curl 'http://localhost:8080/pdb/query/v4/facts/ipaddress'

Show the node that has a specific IP address:

curl 'http://localhost:8080/pdb/query/v4/facts/ipaddress/10.42.42.27'

Show all the facts of a specific node:

curl -X GET http://localhost:8080/pdb/query/v4/facts \
--data-urlencode 'query=["=", "certname",...