Hi,

Thanks for you information, i manage to do this with:

filter f_host {
  match(
    'original_source=[^\.]*'
    flags(store-matches)
    value('MSGONLY')
    type("pcre")
  );
};

destination d_host {
      file("/data/$1/messages.log")
};


If it can help someone else.

Maybe a last question could be if it is not better to use glob in this case to reduce cpu usage ?
But i didn't manage to do it with different try like :
filter f_host {
  match(
    "original_source=*.example.com"
    flags(store-matches)
    value('MSGONLY')
    type("glob")
  );
};


---- On Tue, 24 Mar 2020 07:18:37 +0100 Balazs Scheidler <bazsi77@gmail.com> wrote ----

Hi,

You can extract values from $MSG by using regexps (by using a regexp based filter with the flags(store-matches) option), or by using csv-parser() with a  custom separator (this should be faster) or even db-parser. In any case, once you extracted the server name just make sure to store it in $HOST and then you can use $HOST in your destination filename.


On Mon, Mar 23, 2020 at 7:16 PM Syslogng <syslogng@master666.com> wrote:



--
Bazsi
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Hi,

We receive aggregated syslog from a server (all logs are send from 1 IP). Also all the events are mixed.
The name of the host sending the initial traffic is in each event.

ex:
2020/03/23 [notice] [user] New original_source=SERV1.example.com Task=0 ....

How to recover SER1 which is always preceded by "original_source=" and followed by "example.com" to save it in a file for example /data/serv1.log
I don't want a static filter (I know how to do it) but a dynamic one. If a new event arrives at original_source=SERV2.example.com
I would like it to automatically create a /data/serv2.log

Could you help me please ?

thank you in advance

Pit



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Member info: https://lists.balabit.hu/mailman/listinfo/syslog-ng
Documentation: http://www.balabit.com/support/documentation/?product=syslog-ng
FAQ: http://www.balabit.com/wiki/syslog-ng-faq