NSCLIENT - Connection refused under load?

[Sand Philipp]

First of all you should think about updating to a newer version of
NSClient and maybe a newer version of Nagios :)
I don't know of your Version of NSClient got check_nt option "-t" with
that you can define a timeout for the service check. So when there are a
lot of service checks they will last longer, when you increase the time
before they time out, this may help...
 

> -----Original Message-----
> From: nagios-users-admin at lists.sourceforge.net 
> [mailto:nagios-users-admin at lists.sourceforge.net] On Behalf 
> Of sphillips at netstarnetworks.com
> Sent: Wednesday, September 01, 2004 9:42 AM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] NSCLIENT - Connection refused under load?
> 
> 
> All,
> 
> I am having a few issues with NSCLIENT and Nagios, perhaps 
> some helpful person can be of assistance :-)
> 
> Currently we're trialling a service for a client in which we 
> want to monitor approximately 50 different items from Windows 
> using NSCLIENT.  These include service up/down, and perfmon 
> stats as well as the usual disk usage, CPU load and so on.  
> 
> When we increase the number of checks on NSCLIENT above 
> approxmiately 15 or so, we start receiving "Connection 
> refused by host" from check_nt on the Windows box(es) we're 
> trying to monitor.  These connection refused messages seem to 
> happen fairly randomly.  We also receive what appear to be 
> false 'zero' responses for some counters sometimes (e.g. on a 
> busy webserver, "0.000 hits/minute" or some such).  
> 
> Neither the monitoring server nor the server being monitored 
> are under significant CPU or I/O load.  The version of Nagios 
> is 1.1 and the version of NSCLIENT is 1.0.7.1.
> 
> Can anyone help? 
> 
> 
> Thanks, 
> 
> regards,
> 
> Simon.
> 
> --
> Simon Phillips
> Technical Consultant
> Research & Development Team
> NetStar Australia Pty Ltd
> 
> Phone: +61 2 9805 9805 (Switch)       Phone: +61 2 9805 9853 (Direct)
> Email: sphillips at netstarnetworks.com 
> 
> NetStar provides solutions for voice, data and security networks.
> NetStar Australia is a Quality Endorsed Company to ISO 9001/2000
>            Visit us at http://www.netstarnetworks.com
> 
> 
> 
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::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null