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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You guess you are right. The filter that I’m using is matching a substring within the message, so applying dbparser before the filter might not
have any impact. I’ll give it a go…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">And yes, the parser is extremely fast. My current setup is currently processing (and parsing) around 20k events per second on a 2 CPU VMWare instance
without any signs of problems…<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">/Mikkel<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Fra:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> syslog-ng-bounces@lists.balabit.hu [mailto:syslog-ng-bounces@lists.balabit.hu]
<b>På vegne af </b>Jim Hendrick<br>
<b>Sendt:</b> 10. april 2015 14:53<br>
<b>Til:</b> Syslog-ng users' and developers' mailing list<br>
<b>Emne:</b> Re: [syslog-ng] db-parser reuse for multiple logs?<o:p></o:p></span></p>
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<p class="MsoNormal"> I think it would depend on the filter. If it uses something that is readily available then maybe filter first. If is a match within the message, then possibly not. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The patterndb parser is very fast. I have a single system pulling 24 fields out of a 7000 event per second load and it shows no sign of stress. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Jim<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:#575757">Sent from my Verizon Wireless 4G LTE smartphone<o:p></o:p></span></p>
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<br>
-------- Original message --------<br>
From: Mikkel Leth Carlsen <<a href="mailto:mlca@tdc.dk">mlca@tdc.dk</a>> <br>
Date: 04/10/2015 2:11 AM (GMT-05:00) <br>
To: Syslog-ng users' and developers' mailing list <<a href="mailto:syslog-ng@lists.balabit.hu">syslog-ng@lists.balabit.hu</a>>
<br>
Subject: Re: [syslog-ng] db-parser reuse for multiple logs? <br>
<br>
Hi Evan<br>
<br>
Thanks! I'm not too familiar with how syslog-ng actually implements the configuration and processes syslog messages, but I would think that parsing before filtering could have an impact on performance? I.e. I would want to exclude unwanted data before applying
the parser - which I assume is a more costly operation even if it does not match? Perhaps by inserting:<br>
<br>
filter(filter_host1_or_host2);<br>
<br>
before the parser below? <br>
<br>
/Mikkel<br>
<br>
> -----Oprindelig meddelelse-----<br>
> Fra: <a href="mailto:syslog-ng-bounces@lists.balabit.hu">syslog-ng-bounces@lists.balabit.hu</a> [mailto:syslog-ng-<br>
> <a href="mailto:bounces@lists.balabit.hu">bounces@lists.balabit.hu</a>] På vegne af Evan Rempel<br>
> Sendt: 8. april 2015 17:38<br>
> Til: <a href="mailto:syslog-ng@lists.balabit.hu">syslog-ng@lists.balabit.hu</a><br>
> Emne: Re: [syslog-ng] db-parser reuse for multiple logs?<br>
> <br>
> I don't have an answer to your actual question, however, you can work<br>
> around it by<br>
> <br>
> log {<br>
> source(src_udp);<br>
> parser(myparser);<br>
> log {<br>
> filter(filter_host1);<br>
> destination(dst_host1);<br>
> flags(final);<br>
> };<br>
> log {<br>
> filter(filter_host2);<br>
> destination(dst_host2);<br>
> flags(final);<br>
> };<br>
> };<br>
> <br>
> Hope that helps.<br>
> <br>
> Evan.<br>
> <br>
> On 04/08/2015 04:31 AM, Mikkel Leth Carlsen wrote:<br>
> > Hi<br>
> ><br>
> > Are db-parsers defined in syslog-ng configurations not reusable for<br>
> multiple logs? A simplified example (syslog 3.6.2):<br>
> ><br>
> > parser myparser {<br>
> > db_parser(<br>
> > file("/usr/local/etc/patterndb.d/myparser.xml")<br>
> > );<br>
> > };<br>
> ><br>
> > template mytemplate {<br>
> > template("${A};${B};${C}\n");<br>
> > }<br>
> ><br>
> > filter filter_host1 {<br>
> > netmask(10.0.0.1/255.255.255.255);<br>
> > };<br>
> ><br>
> > filter filter_host2 {<br>
> > netmask(10.0.0.2/255.255.255.255);<br>
> > };<br>
> ><br>
> > destination dst_host1 {<br>
> > file("host1.log" perm(0644) template(mytemplate));<br>
> > };<br>
> ><br>
> ><br>
> > destination dst_host2 {<br>
> > file("host2.log" perm(0644) template(mytemplate));<br>
> > };<br>
> ><br>
> > log {<br>
> > source(src_udp);<br>
> > filter(filter_host1);<br>
> > parser(myparser);<br>
> > destination(dst_host1);<br>
> > flags(final);<br>
> > };<br>
> ><br>
> > log {<br>
> > source(src_udp);<br>
> > filter(filter_host2);<br>
> > parser(myparser);<br>
> > destination(dst_host2);<br>
> > flags(final);<br>
> > };<br>
> ><br>
> > This seems to work as expected and 'syslog-ng -s' does not report any<br>
> problems, but I see the following in the syslog-ng internal log:<br>
> ><br>
> > Internal error, duplicate configuration elements refer to the same<br>
> persistent config; name='db-<br>
> parser(/usr/local/etc/patterndb.d/myparser.xml)'<br>
> > Internal error, duplicate configuration elements refer to the same<br>
> persistent config; name='db-<br>
> parser(/usr/local/etc/patterndb.d/myparser.xml)'<br>
> ><br>
> > /Mikkel<br>
> ><br>
> _______________________________________________________________________<br>
> _______<br>
> > Member info: <a href="https://lists.balabit.hu/mailman/listinfo/syslog-ng">https://lists.balabit.hu/mailman/listinfo/syslog-ng</a><br>
> > Documentation:<br>
> <a href="http://www.balabit.com/support/documentation/?product=syslog-ng">http://www.balabit.com/support/documentation/?product=syslog-ng</a><br>
> > FAQ: <a href="http://www.balabit.com/wiki/syslog-ng-faq">http://www.balabit.com/wiki/syslog-ng-faq</a><br>
> ><br>
> _______________________________________________________________________<br>
> _______<br>
> Member info: <a href="https://lists.balabit.hu/mailman/listinfo/syslog-ng">https://lists.balabit.hu/mailman/listinfo/syslog-ng</a><br>
> Documentation:<br>
> <a href="http://www.balabit.com/support/documentation/?product=syslog-ng">http://www.balabit.com/support/documentation/?product=syslog-ng</a><br>
> FAQ: <a href="http://www.balabit.com/wiki/syslog-ng-faq">http://www.balabit.com/wiki/syslog-ng-faq</a><br>
<br>
______________________________________________________________________________<br>
Member info: <a href="https://lists.balabit.hu/mailman/listinfo/syslog-ng">https://lists.balabit.hu/mailman/listinfo/syslog-ng</a><br>
Documentation: <a href="http://www.balabit.com/support/documentation/?product=syslog-ng">
http://www.balabit.com/support/documentation/?product=syslog-ng</a><br>
FAQ: <a href="http://www.balabit.com/wiki/syslog-ng-faq">http://www.balabit.com/wiki/syslog-ng-faq</a><o:p></o:p></p>
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