Puppet users - Jan 2012 - future use of fully qualified variable names

hi,

in the logs of our 2.7.10 puppet master we find messages like these:
Dynamic lookup of $functie at /etc/puppet/manifests/server_classes.pp:52 is 
deprecated. Support will be removed in Puppet 2.8. Use a fully-qualified 
variable name (e.g., $classname::variable) or parameterized classes.

However, I''m a bit worried that a key functionality will be removed in
2.8:
we set a param/value in every node telling the node what it''s funtion
is
and use that in a variety of manifests to decide how to configure the 
server.

we use something like:
node servera {
  $function = ''webserver''
  include function_dependent_services
}
node serverb {
  $function = ''dbserver''
  include function_dependent_services
}

class function_dependent_services {
  include iptables
  include motd
}

class iptables {
  file {
   "/etc/iptables/cfg-firewall":
     content => template("iptables/cfg-firewall.erb");
  }
}

and then, somewhere in the erb we evaluate <%= function %>

will this be broken in 2.8?
and, if yes: how should we tell the erb the param that changes for a lot of 
nodes?

or should I file this as a bug for v2.8?

please help us out, thanks in advance
Alex

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On Thu, Jan 26, 2012 at 7:55 AM, Alexander Swen <alex.swen@gmail.com>
wrote:
> hi,
>
> in the logs of our 2.7.10 puppet master we find messages like these:
> Dynamic lookup of $functie at /etc/puppet/manifests/server_classes.pp:52
> is deprecated. Support will be removed in Puppet 2.8. Use a fully-qualified
> variable name (e.g., $classname::variable) or parameterized classes.
>
> However, I''m a bit worried that a key functionality will be
removed in
> 2.8: we set a param/value in every node telling the node what it''s
funtion
> is and use that in a variety of manifests to decide how to configure the
> server.
>
> we use something like:
> node servera {
>   $function = ''webserver''
>   include function_dependent_services
> }
> node serverb {
>   $function = ''dbserver''
>   include function_dependent_services
> }
>
> class function_dependent_services {
>   include iptables
>   include motd
> }
>
> class iptables {
>   file {
>    "/etc/iptables/cfg-firewall":
>      content => template("iptables/cfg-firewall.erb");
>   }
> }
>
> and then, somewhere in the erb we evaluate <%= function %>
>
> will this be broken in 2.8?
> and, if yes: how should we tell the erb the param that changes for a lot
> of nodes?
>
> or should I file this as a bug for v2.8?
>
> please help us out, thanks in advance
> Alex

Hi Alex,

We have a page on our website that should help you out with this -->
http://docs.puppetlabs.com/guides/scope_and_puppet.html  Have you seen that
yet?  That''s a great place to start.  You have parameterized classes
that
can help you out, as well as data lookup methods like Hiera (
http://github.com/puppetlabs/hiera) that are also available.


>
>  --
> You received this message because you are subscribed to the Google Groups
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> To view this discussion on the web visit
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-- 

Gary Larizza
Professional Services Engineer
Puppet Labs

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On Thursday, January 26, 2012 11:24:19 AM UTC-6, Gary Larizza
wrote:
>
>
>
> On Thu, Jan 26, 2012 at 7:55 AM, Alexander Swen  wrote:
>
>> hi,
>>
>> in the logs of our 2.7.10 puppet master we find messages like these:
>> Dynamic lookup of $functie at
/etc/puppet/manifests/server_classes.pp:52
>> is deprecated. Support will be removed in Puppet 2.8. Use a
fully-qualified
>> variable name (e.g., $classname::variable) or parameterized classes.
>>
>> However, I''m a bit worried that a key functionality will be
removed in
>> 2.8: we set a param/value in every node telling the node what
it''s funtion
>> is and use that in a variety of manifests to decide how to configure
the
>> server.
>>
>> we use something like:
>> node servera {
>>   $function = ''webserver''
>>   include function_dependent_services
>> }
>> node serverb {
>>   $function = ''dbserver''
>>   include function_dependent_services
>> }
>>
>> class function_dependent_services {
>>   include iptables
>>   include motd
>> }
>>
>> class iptables {
>>   file {
>>    "/etc/iptables/cfg-firewall":
>>      content => template("iptables/cfg-firewall.erb");
>>   }
>> }
>>
>> and then, somewhere in the erb we evaluate <%= function %>
>>
>> will this be broken in 2.8?
>> and, if yes: how should we tell the erb the param that changes for a
lot
>> of nodes?
>>
>> or should I file this as a bug for v2.8?
>>
>> please help us out, thanks in advance
>> Alex
>
>
> Hi Alex,
>
> We have a page on our website that should help you out with this --> 
> http://docs.puppetlabs.com/guides/scope_and_puppet.html  Have you seen 
> that yet?  That''s a great place to start.  You have parameterized
classes
> that can help you out, as well as data lookup methods like Hiera (
> http://github.com/puppetlabs/hiera) that are also available.  
>
>   
Alex, how did you end up solving this? Please post back to the list. I have 
exactly the same problem with my upgrade to puppet 2.7. I have variables 
defined in my nodes that are used in my templates and want to do this 
correctly so that the upgrade to puppet 2.8 works.

Thanks.
 
 

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