Puppetconf-2011 is a project mainly written in JavaScript, it's free.
Slides from Puppetconf 2011 talk "Puppet at Media Temple"
Slides from my 'Puppet at Media Temple' presentation from PuppetConf 2011. Exported from org-mode using org-s5.
Check it out on GitHub pages here
Copyright 2011 Sharif Nassar.
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Much of the slides about get_var and get_secret are based heavily on Nate Jones's get_var presentation.