Puppet 2.7 Cookbook

Using embedded Ruby

"Ruby, like fire, is a very useful friend, and a very dangerous enemy."—Mikkel Bruun

Templates are a powerful way of using embedded Ruby to help build configuration files dynamically and iterate over arrays. However, you can embed Ruby in your manifests directly without having to use a separate file, by calling the inline_template function.

How to do it…

Pass your Ruby code to inline_template within the Puppet manifest as follows:

cron { "nightly-job":
    command => "/usr/local/bin/nightly-job",
    hour => "0",
    minute => inline_template("<%= hostname.hash.abs % 60 %>"),
}

How it works…

Anything inside the string passed to inline_template is executed as if it were an ERB template. That is, anything inside the <%= and %> delimiters will ...