Re: Snort 2.6.1 Stops Logging

[Martin Roesch <roesch () sourcefire com>]

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One thing you could do to help us figure out what's going on is to  
run gdb and attach it to the Snort process.  Once it's attached, run  
a backtrace and if the program is stuck in function it should be very  
apparent.

Can you try that and post the backtrace?

      -Marty

On Nov 21, 2006, at 8:57 PM, Eric J. Feldhusen wrote:

> Jason Haar wrote:
> > Colin Grady wrote:
> > > I've migrated one system from Snort 2.6.0.2 <http://2.6.0.2> to  
> > > Snort
> > > 2.6.1. I've made no configuration file changes and no command-line
> > > changes between the two releases, but after somewhere around 20-30
> > > minutes after being started Snort 2.6.1 seems to stop logging data.
> > > I'm using unified logging, which is being processed through  
> > > Barnyard.
> > > The Snort process continues to run and the processor time  
> > > continues to
> > > climb, but the unified logs stop growing -- so it's not related to
> > > Barnyard as best as I can tell.
> > >
> > > Anyone else seen anything like this?
> >
> > I think this is a "me too".  I've just noticed that 2.6.1RC1  
> > appears to
> > work initially, but stops logging at some later time. I am just
> > upgrading to 2.6.1 to see if that fixes it - but your report  
> > implies it
> > won't. We're using both syslog and mysql output modules - and both  
> > stop
> > reporting - so that (plus your barnyard report) implies the  
> > problem is
> > occurring somewhere earlier on.
> >
> > This is snort-2.6.1RC1 under CentOS4.4
>
> I've got a RHEL4u4 server with dual xeons with hyperthreading on, with
> snort-2.6.1 with mysql logging only and using Base 1.2.7 , and I've  
> seen
> similar problems, the snortd process will run for about 20-120 minutes
> at a using 5-8% of the cpu, and then I'll check back later in the day
> and snortd process load is at 100%.  I've been shutting of more and  
> more
> included rule sets to see if it's a particular rule causing the  
> problem.
>   I'll have to try and see if I shut off all rules if it happens.
>
> Eric Feldhusen
>
>
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- --
Martin Roesch - Founder/CTO, Sourcefire Inc. - +1-410-290-1616
Sourcefire - Security for the Real World - http://www.sourcefire.com
Snort: Open Source IDP - http://www.snort.org




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