Puppet users - Dec 2010 - How do you extend a previous setting?

Hi all,

I have a site.pp which defines the user I want to log in as, however on some 
nodes (depending on which software is installed) this user needs to be a 
member of particular groups.

If I define the user in site.pp with core details and then in each class alter 
the group membership (the idea being including all the necessary classes will 
install the software, configure it, and make me a member of all the necessary 
groups) I get this error:

Error 400 on SERVER: Duplicate definition: User[adam] is already defined in 
file ...; cannot redefine at ...

Is there any way I can make the node definition "inherit" the site
one?  All I
want to do is add another entry into the array passed as the
''groups'' parameter.

Many thanks,
Adam.

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On 12/29/2010 01:26 PM, Adam Nielsen wrote:
> Hi all,
> 
> I have a site.pp which defines the user I want to log in as, however on
> some nodes (depending on which software is installed) this user needs to
> be a member of particular groups.
> 
> If I define the user in site.pp with core details and then in each class
> alter the group membership (the idea being including all the necessary
> classes will install the software, configure it, and make me a member of
> all the necessary groups) I get this error:
> 
> Error 400 on SERVER: Duplicate definition: User[adam] is already defined
> in file ...; cannot redefine at ...
> 
> Is there any way I can make the node definition "inherit" the
site one?
> All I want to do is add another entry into the array passed as the
> ''groups'' parameter.
Good keyword that.

Put the use definition in a class. Each list of groups is a subclass
such that

class my_user_in_group_foo inherits my_user {
  User["bla"] { groups +> [ "foo", "bar" ] }
}

Include those subclasses as appropriate.

HTH,
Felix

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>> Is there any way I can make the node definition "inherit" the
site one?
>> All I want to do is add another entry into the array passed as the
>> ''groups'' parameter.
>
> Good keyword that.
>
> Put the use definition in a class. Each list of groups is a subclass
> such that
>
> class my_user_in_group_foo inherits my_user {
>    User["bla"] { groups +>  [ "foo", "bar"
] }
> }
>
> Include those subclasses as appropriate.
Ah, of course!  I''m still new to Puppet and had forgotten about class 
inheritance.  I just tried this and it works perfectly.

Many thanks!
Adam.

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