Hi Flávio,

currently there isn't any "conditional" extractor for more complex 
filtering logic in Graylog2. If you need to apply more complex logic to the 
message filtering, the most flexible way would be to write some Drools 
rules, see http://graylog2.org/resources/documentation/general/rewriting.

In general I'd recommend creating a separate input for each application 
type or application category (whatever fits your usecase) if you have lots 
of filtering rules. Otherwise each message would run through all the rules 
which may slow down the overall performance of the system.


Cheers,
Jochen

Am Donnerstag, 28. August 2014 16:41:58 UTC+2 schrieb Flávio Pimenta:
>
> Hi,
>
> I started a study and implementation graylog2 about 150 severs and have 
> the same doubt: I need apply one extractor at a syslog input only when 
> application_name is httpd.
> I read a full documentation and not found it ready.I don't like create a 
> other Input to extract a message from  each application type.
> Is plugin a best way to try make this?
>
> Best Regards,
> Flávio Pimenta.
>

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