Service latency suddenly through the roof

[Andreas Ericsson]

Deborah Martin wrote:
> Hi, 
> 
> I'm running nagios 2.0b4, on suse 9.3. The plan is to upgrade to 3.0.6
> (nagios) and SLES10 sp1. 
> 
> Recently, during some checking of the data that I collect for SLA reporting,
> I noticed the service latency has gone through the roof!
> 
> The only recent change I've made is to put ssh checks as a host check. This
> was to filter ssh checks away from the service problem web interface 
> as we do have to shut nodes down from time to time but we don't want to be
> alerted as a service problem.
> 

Did you also enable scheduled host checks? In 2.x, nagios stops everything
as soon as it runs a host check, so latency will naturally go through the
roof.

> I then had to introduce check_dummy as the service check (otherwise the
> pre-flight check outputs hundred of lines stating the no services was
> associated with xxxx host).  The check_dummy service check is only done on a
> Sunday once per host as it's a dummy check. I thought this would put less
> load on Nagios (please correct me if I'm wrong) 
> 
> We regard service problems to only be checks against our databases. 
> 
> Does anyone know of what could set this servicelatency to suddenly increase
> like this ? 
> 

Since you're running a beta release that's more than 2 years old, I'm not
even remotely interested to guess or investigate this matter. At least
upgrade to latest 2.x stable (2.12, I think?). If the problem still persists,
then it's worth investigating.

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231

Considering the successes of the wars on alcohol, poverty, drugs and
terror, I think we should give some serious thought to declaring war
on peace.

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