Nagios2 process overwhelmed by NSCA daemon?

Jonathan Call jcall at verio.net
Thu Dec 10 17:39:29 CET 2009


Yes, Full Nagios is running on the slaves. They use OCP_daemon to pass on data to the central server since the NSCA client can't hack the load. They seem to be sending data properly to the NSCA daemon. 

Part of the issue I've tracked down to the status.cgi. The central server appears to be underpowered when it comes to both having Nagios process data AND have several people pounding out host/service status queries from the web interface. I will be adding another CPU to see if this helps, however I'm dismayed that Nagios on the central server doesn't seem to be reporting any errors, or indicating that there is any problem processing passive results. Nagios just starts to lose the data at a certain point.

Jonathan 

> -----Original Message-----
> From: Greg Pangrazio [mailto:pangrazi at gmail.com]
> Sent: Thursday, December 10, 2009 7:26 AM
> To: Jonathan Call
> Cc: nagios-user Mailinglist
> Subject: Re: [Nagios-users] Nagios2 process overwhelmed by NSCA daemon?
> 
> Are you running the full nagios on the "slaves"?  Do the checks seem
> to be working on those hosts?
> 
> Greg Pangrazio
> pangrazi at gmail.com
> 
> 
> 
> 
> 
> On Wed, Dec 9, 2009 at 5:06 PM, Jonathan Call <jcall at verio.net> wrote:
> > I recently added two new slaves to a distributed Nagios system. The
> > central server now passively processes 17,000+ service checks on
> 3000+
> > servers.
> >
> > It's been over an hour and a half since I brought those new slaves
> > online and I have about 150 hosts still stuck in 'Pending' and about
> > 1300 services in the same state. In addition to that it seems that
> the
> > service check results from the other slaves that were working
> normally
> > are now arbitrarily disappearing. For example, on one host three of
> the
> > service checks have been updated relatively recently (i.e. 5-30
> minutes
> > ago) but three other service checks haven't been updated for almost
> an
> > hour. The slaves all appear operational and the hosts are being
> checked
> > on time. Is it possible I've overwhelmed Nagios' ability to process
> data
> > from the NSCA daemon or struck some internal Nagios bottleneck? Any
> > suggestions would be appreciated.
> >
> > Jonathan
> >
> >
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