[syslog-ng] Logging loop

Hiren Patel patelhn at telkom.co.za
Fri Jun 1 08:27:44 CEST 2007


On Thu, 2007-05-31 at 12:53 -0700, Nate Campi wrote:
> On Thu, May 31, 2007 at 08:36:08AM +0200, Hiren Patel wrote:
> > 
> > you could have syslog-ng log messages from itself (source internal) to a
> > separate file and use something like logwatch (or other log monitoring
> > programs) to watch for errors in the file and report issues.
> 
> ...and if you're worried about that not being able to write to the file,
> pipe the internal source directly to swatch/SEC/logwatch/whatever and
> alert from there. 
> 
> Of course if you alert via email and send via a local MTA and your local
> disk is fried, it still might not get out. Make sure you're protecting
> against real-world failure scenarios and that you account for them
> properly. Something like this should work rather reliably:
> 
> syslog-ng -> pipe into log parser -> remote SMTP or trap or nagios passive alert

and you could have the parser emailing you to notify you that everything
is okay, that way, when the mailing system for some reason fails, you
stand a chance of noticing that it hasn't mailed you an okay
notification and investigate.

> 
> > On Thu, 2007-05-31 at 00:01 +0000, Bryan Henderson wrote:
> > > My syslog-ng got into an infinite loop when it didn't have permission
> > > to write to a file destination.  It tried to log to that same
> > > destination the fact that it failed to log.
> > > 
> > > Is there a recommended way to configure syslog-ng to avoid this?
> > > Maybe I could route messages from Syslog itself to some relatively
> > > reliable destination or just turn them off?  
> > > 
> > > If not, what would be a good enhancement to the program to avoid loops?
> > > 
> > > I had the problem with syslog-ng 2.0.2.
> > > 
> > -- 
> > Hiren Patel
> > 
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> > 
> 
-- 
Hiren Patel

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