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Puppet 5 Cookbook

You're reading from   Puppet 5 Cookbook Jump start your Puppet 5.x deployment using engaging and practical recipes

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Product type Paperback
Published in Jun 2018
Publisher Packt
ISBN-13 9781788622448
Length 394 pages
Edition 4th Edition
Tools
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Author (1):
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Thomas Uphill Thomas Uphill
Author Profile Icon Thomas Uphill
Thomas Uphill
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Table of Contents (16) Chapters Close

Title Page
Packt Upsell
Contributors
Preface
1. Puppet Language and Style FREE CHAPTER 2. Puppet Infrastructure 3. Writing Better Manifests 4. Working with Files and Packages 5. Users and Virtual Resources 6. Managing Resources and Files 7. Managing Applications 8. Servers and Cloud Infrastructure 9. External Tools and the Puppet Ecosystem 10. Monitoring, Reporting, and Troubleshooting 1. Other Books You May Enjoy Index

Importing dynamic information


Even though some system administrators like to wall themselves off from the rest of the office using piles of old printers, we all need to exchange information with other departments from time to time. For example, you may want to insert data into your Puppet manifests that is derived from some outside source. The generate function is ideal for this. Functions are executed on the machine compiling the catalog (the master for centralized deployments); an example such as the one shown here will only work in a masterless configuration.

Getting ready

Follow these steps to prepare to run the example:

  1. Create the /usr/local/bin/message.rb script with the following contents:
#!/opt/puppetlabs/puppet/bin/ruby
puts "This runs on the master if you are centralized"
  1. Make the script executable:
$ sudo chmod a+x /usr/local/bin/message.rb

How to do it...

This example calls the external script we created previously and gets its output:

  1. Create a message.pp manifest containing the following...
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