Using EPP templates

EPP templates are the replacement for ERB templates, which will be deprecated in a future release of Puppet. EPP templates use the Puppet syntax and are not compiled through Ruby. Two new functions are defined to call EPP templates: epp and inline_epp. These functions are the EPP equivalents of the ERB template and inline_template functions, respectively. The main difference from EPP templates is that variables are referenced using the Puppet notation, $variable, instead of @variable. All variables are fully scoped in EPP templates; there is no need to use the scope function as with ERB templates.

How to do it...

We'll create an EPP template and use puppet apply to compile the template:

1. Create an EPP template in epp-test.epp with the following content:

This is <%= $message %>.

2. Create an epp.pp manifest, which uses the epp and inline_epp functions:

$message = "the message"
file {'/tmp/epp-test':
  content => epp('/home/thomas/puppet/epp-test.epp')
} 
notify {"message...