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Mastering Puppet 5

You're reading from   Mastering Puppet 5 Optimize enterprise-grade environment performance with Puppet

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781788831864
Length 292 pages
Edition 1st Edition
Tools
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Authors (2):
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Jason Southgate Jason Southgate
Author Profile Icon Jason Southgate
Jason Southgate
Ryan Russell-Yates Ryan Russell-Yates
Author Profile Icon Ryan Russell-Yates
Ryan Russell-Yates
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Table of Contents (14) Chapters Close

Preface 1. Authoring Modules FREE CHAPTER 2. Roles and Profiles 3. Extending Puppet 4. Hiera 5 5. Managing Code 6. Workflow 7. Continuous Integration 8. Extending Puppet with Tasks and Discovery 9. Exported Resources 10. Application Orchestration 11. Scaling Puppet 12. Troubleshooting and Profiling 13. Other Books You May Enjoy

Introducing a frame for the environment

Here's a typical scenario for Hiera: you find yourself having to override the DNS setting for your development environment because that environment can't connect to the production resolver on your network. You then deploy your production in a second data center, and you need that location to be different. Hiera allows us to model settings such as the production DNS resolver is 10.20.1.3, and the development DNS server is 10.199.30.2.

To accommodate this type of scenario, we can introduce what's best described as an environment frame within the Hiera hierarchy, as follows:

---
version: 5
hierarchy:
- name: "Per-node data"
path: "nodes/%{trusted.certname}.yaml"

- name: "Per-environment data"
path: "%{server_facts.environment}.yaml"

- name: Common
path: common.yaml...
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