Puppet users - May 2011 - Over-riding changes in modules and classes

Hello puppet gurus, maybe one of you can help with this.  We have a
bunch of servers that are managed by puppet, but would like to make a
single, small change to a text file only on newly built machines.
This text file is controlled by a module that is referenced in several
places in our current configuration files.

So the question would be, is there a straightforward way to have this
new config put in place *only* on newly built machines, but not on all
the previously existing ones?  I''m thinking that perhaps
there''s a way
to over-ride the config put in place by the existing module without
having to copy all of our profiles, etc.

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Sean Carolan [Fri, May 06, 2011 at 10:12:00AM -0500]:
> Hello puppet gurus, maybe one of you can help with this.  We have a
> bunch of servers that are managed by puppet, but would like to make a
> single, small change to a text file only on newly built machines.
> This text file is controlled by a module that is referenced in several
> places in our current configuration files.
> 
> So the question would be, is there a straightforward way to have this
> new config put in place *only* on newly built machines, but not on all
> the previously existing ones?  I''m thinking that perhaps
there''s a way
> to over-ride the config put in place by the existing module without
> having to copy all of our profiles, etc.
You can just create a new class that inherits your previous class
and then overwrites the File[] you declared before and use that
only on the new machines.

Cheers,

Nico

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> You can just create a new class that inherits your previous class
> and then overwrites the File[] you declared before and use that
> only on the new machines.
Will this also work with an augeas entry with a changes [] section?

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On 05/06/2011 06:28 PM, Sean Carolan wrote:
>> You can just create a new class that inherits your previous class
>> and then overwrites the File[] you declared before and use that
>> only on the new machines.
> 
> Will this also work with an augeas entry with a changes [] section?
> 
I cannot see why it wouldn''t.

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