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Extending Puppet

You're reading from   Extending Puppet Tools and Techniques for smarter infrastructure configuration

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Product type Paperback
Published in Jun 2016
Publisher Packt
ISBN-13 9781785885686
Length 316 pages
Edition 2nd Edition
Tools
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Authors (2):
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Alessandro Franceschi Alessandro Franceschi
Author Profile Icon Alessandro Franceschi
Alessandro Franceschi
Jaime Soriano Pastor Jaime Soriano Pastor
Author Profile Icon Jaime Soriano Pastor
Jaime Soriano Pastor
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Toc

Table of Contents (14) Chapters Close

Preface 1. Puppet Essentials FREE CHAPTER 2. Managing Puppet Data with Hiera 3. Introducing PuppetDB 4. Designing Puppet Architectures 5. Using and Writing Reusable Modules 6. Higher Abstraction Modules 7. Puppet Migration Patterns 8. Code Workflow Management 9. Scaling Puppet Infrastructures 10. Extending Puppet 11. Beyond the System 12. Future Puppet Index

PuppetDB API


PuppetDB uses a Command/Query Responsibility Separation (CQRS) pattern:

  • Read activities are done for queries on the available REST, such as endpoints

  • Write commands to update catalog, facts, and reports, and deactivate nodes

APIs are versioned (v1, v2, v3...). The most recent ones add functionalities and try to keep backwards compatibility.

Querying PuppetDB (read)

The URL for queries is structured like this:

http[s]://<server>:<port>/pdb/query/<version>/<endpoint>?query=<query>

Available endpoints for queries are: nodes, environments, factsets, facts, fact-names, fact-paths, fact-contents, catalogs, edges, resources, reports, events, event-counts, aggregate-event-counts, metrics, server-time, and version.

Query strings are URL-encoded JSON arrays in prefix notation, which makes them look a bit unusual. The general format is as follows:

[ "<operator>" , "<field>" , "<value>" ]

The comparison operators are: =, >=, >, < , <= and...

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