FAQ

On Mon, 2013-01-28 at 09:12 -0800, Luke Bigum wrote:
On Monday, January 28, 2013 5:00:24 PM UTC, Ti Leggett wrote:
However, let me warn you against going overboard with having classes
include other classes from other modules. It can be annoying to track down
where resources coming from for any given node if you've got cross module
inclusion: kibana includes httpd includes mod_ssl includes openssl includes
somethingelse includes ... How did this get on here?

A cleaner way might be to declare cross module relationships using the
Arrow operators:

class kibana::apache {
Class[apache::params] -> Class[kibana::apache]
...
}

And then you make a house rule to have all your classes instantiated in
your node definitions:

node woof {
class kibana
class apache::params
}

If apache::params is missing, you'll get an error saying so. It also fits
rather nicely into an ENC if you want to go in that direction now / later.
While this is a good idea in general, it doesn't solve Luke's original
problem. In order to reference a variable $apache::params::something
from inside the kibana::apache class, you need the apache::params class
to be parsed on the puppet master before the kibana::apache class. This
is a parse-time ordering problem, not a run-time ordering problem.

The only way to force parse-time ordering right now is to do a direct
include, unfortunately.

--
Calvin Walton <calvin.walton@kepstin.ca>

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