Puppet users - Jun 2010 - using modules from the forge (variable setting)

Dear all,

I''m fairly new to puppet, so please excuse this newbie question.

I was wondering how I can override a certain variable in a module I
downloaded from the forge.

By example. I downloaded and installed the puppetlabs-collectd
module.  In collectd::params there is a variable that sets the
collectd server.

Due to variable scope I can''t override it in my node defintion (or I
must be doing something wrong).  I can change the params.pp file.  But
is that the best way?

I would expect this not to be the right way, as when I update the
module I''ll have to change that again manually.

Thanks for taking the time to read/respond!

Rudy

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On Jun 8, 3:57 pm, Rudy Gevaert <rudy.geva...@gmail.com>
wrote:
> Dear all,
>
> I''m fairly new to puppet, so please excuse this newbie question.
>
> I was wondering how I can override a certain variable in a module I
> downloaded from the forge.
>
> By example. I downloaded and installed the puppetlabs-collectd
> module.  In collectd::params there is a variable that sets the
> collectd server.
>
> Due to variable scope I can''t override it in my node defintion (or
I
> must be doing something wrong).  I can change the params.pp file.  But
> is that the best way?
>
> I would expect this not to be the right way, as when I update the
> module I''ll have to change that again manually.
>
> Thanks for taking the time to read/respond!

I would not consider this a newbie question. There are lots of
potential approaches to building resuable modules, but the community
does not appear to have settled on one.

See, for instance
http://www.puppetmanaged.org/documentation/Puppet_Common_Modules.html
http://www.example42.com/puppet/howto.php
http://plathrop.tertiusfamily.net/blog/2008/04/18/creating-puppet-modules/
http://serialized.net/2009/07/puppet-module-patterns/

Thus, the approach for customizing each module you download from the
forge will vary. They will each take different amounts of work to
merge updated releases with your customizations. In the case of the
module you''re talking about, I think the intended approach is for you
to modify params.pp.

All the best,
Brian Pitts

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> See, for
instancehttp://www.puppetmanaged.org/documentation/Puppet_Common_Modules.htmlhttp://www.example42.com/puppet/howto.phphttp://plathrop.tertiusfamily.net/blog/2008/04/18/creating-puppet-mod...http://serialized.net/2009/07/puppet-module-patterns/
>
> Thus, the approach for customizing each module you download from the
> forge will vary. They will each take different amounts of work to
> merge updated releases with your customizations. In the case of the
> module you''re talking about, I think the intended approach is for
you
> to modify params.pp.
Thank you for the feedback Brian!  I''m surely going to have a look at
the urls you included!

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