Puppet users - Nov 2012 - Right way to implement "roles" in hiera/puppet

I''m looking to implement a hiera backend for our Puppet installation,
as we
routinely deploy systems that are of varying hardware, OS, and which may 
have multiple roles they fill.

I''ve figured out, I think, how to handle the OS question through
facter,
but implementing server roles isn''t quite so clear. I want to maintain
that
information on the server, not on the clients, but everything hiera-related 
seems to use the facts for a given system. Installing a file containing the 
roles on the client seems like a kludge. Is there a more hiera-ish, 
puppet-ish way to accomplish this?

Thanks!

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On Tuesday, November 27, 2012 6:32:23 AM UTC-6, Bret Wortman
wrote:
>
> I''m looking to implement a hiera backend for our Puppet
installation, as
> we routinely deploy systems that are of varying hardware, OS, and which may
> have multiple roles they fill.
>
> I''ve figured out, I think, how to handle the OS question through
facter,
> but implementing server roles isn''t quite so clear. I want to
maintain that
> information on the server, not on the clients, but everything hiera-related
> seems to use the facts for a given system. Installing a file containing the
> roles on the client seems like a kludge. Is there a more hiera-ish, 
> puppet-ish way to accomplish this?
>
>
Suppose you define one class for each role (each of which may declare any 
number of resources and other classes).  In Puppet 3, I think you can do 
this:

# An array of the names of the needed role classes
$role_classes = hiera(''role_classes'') 

# Declare those classes
include ${role_classes}

If I recall correctly, though, you can accomplish the same thing, even in 
Puppet 2.[67], with

hiera_include(''role_classes'')


John

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