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Puppet 4.10 Beginner???s Guide, Second Edition

You're reading from   Puppet 4.10 Beginner???s Guide, Second Edition From newbie to pro with Puppet 4.10

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Product type Paperback
Published in May 2017
Publisher Packt
ISBN-13 9781787124004
Length 268 pages
Edition 2nd Edition
Languages
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Author (1):
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John Arundel John Arundel
Author Profile Icon John Arundel
John Arundel
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Table of Contents (20) Chapters Close

Puppet 4.10 Beginner's Guide Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. Getting started with Puppet FREE CHAPTER 2. Creating your first manifests 3. Managing your Puppet code with Git 4. Understanding Puppet resources 5. Variables, expressions, and facts 6. Managing data with Hiera 7. Mastering modules 8. Classes, roles, and profiles 9. Managing files with templates 10. Controlling containers 11. Orchestrating cloud resources 12. Putting it all together Index

Cron resources


Cron is the mechanism on UNIX-like systems which runs scheduled jobs, sometimes known as batch jobs, at specified times or intervals. For example, system housekeeping tasks such as log rotation, or checking for security updates, are run from cron. The details of what to run and when to run it are kept in a specially-formatted file called crontab (short for cron table).

Puppet provides the cron resource for managing scheduled jobs, and we saw an example of this in the run-puppet manifest we developed in Chapter 3, Managing your Puppet code with Git (run-puppet.pp):

cron { 'run-puppet':
  command => '/usr/local/bin/run-puppet',
  hour    => '*',
  minute  => '*/15',
}

The title run-puppet identifies the cron job (Puppet writes a comment to the crontab file containing this name, to distinguish it from other, manually-configured cron jobs). The command attribute is the command for the cron resource to run, and the hour and minute attributes specify the time (*/15 is cron...

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