managing latency-induced host down alerts

[Michael W. Lucas]

On Wed, Sep 12, 2007 at 10:02:51AM -0500, Marc Powell wrote:
> 
> 
> > -----Original Message-----
> > From: nagios-users-bounces at lists.sourceforge.net [mailto:nagios-users-
> > bounces at lists.sourceforge.net] On Behalf Of Michael W. Lucas
> > Sent: Wednesday, September 12, 2007 9:46 AM
> > To: nagios-users at lists.sourceforge.net
> > Subject: [Nagios-users] managing latency-induced host down alerts
> > 
> > Hi,
> > 
> > I'm using Nagios 2.9 on FreeBSD, on a wide area network that has
> > remote networks scattered across the USA and Mexico.
> > 
> > We have a problem where latency on some remote circuits rises due to
> > congestion.  This means that various service checks time out, as they
> > take more than 10 seconds to complete.  (Yes, this is a real problem,
> > and we're addressing it.  I'm using smokeping to track latency at
> > these sites now, analyzing traffic, etc.)
> 
> 
> > I'd like to separate the latency problem from a site down problem.  I
> > can think of a couple ways to do this:
> > 
> > 1) increase the 10-second maximum timeout for a service check to
> > complete.  Can this be done in Nagios?
> 
> Yes, and is the route I would take since it's the simplest. All standard
> plugins support a timeout parameter, usually -t. You can run ./plugin
> --help to verify if it's supported. Just add an appropriate timeout for
> the test you're trying to complete in the command{} definition. You'll
> also need to increase the master service_check_timeout parameter in
> nagios.cfg. That's a fallback timeout in case the plugin doesn't
> terminate itself properly. I have my plugin timeouts generally set at 45
> seconds and the master at 60.

Hi,

My understanding was that Nagios terminated service checks after 10
seconds, no matter how long the plugin took to complete?

I have my plugins set to 10 seconds, but when I increase them beyond
10 seconds Nagios still reports the maximum time for any check is 10
seconds.

Thanks,
==ml



-- 
Michael W. Lucas 	mwlucas at BlackHelicopters.org, mwlucas at FreeBSD.org
		http://www.BlackHelicopters.org/~mwlucas/
      Coming Soon: "Absolute FreeBSD" -- http://www.AbsoluteFreeBSD.com
On 5/4/2007, the TSA kept 3 pairs of my soiled undies "for security reasons."

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