[syslog-ng] variable host filter in events

Balazs Scheidler bazsi77 at gmail.com
Tue Mar 24 06:18:37 UTC 2020


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 at master666.com> wrote:

> 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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