check snmp problem and cant find the reason

[Subhendu Ghosh]

Can you try running the plugin with a "-v" option (verbose mode - not 
documented) - it prints the command and the output of the command.

-sg


On Thu, 23 Jan 2003, Kelly Setzer wrote:

> > From: jgking at packetstorm.org
> > 
> > Ok i have 2 linux systems, one i test on and the other is where i deploy 
> > after testing. On the test system everything works just fine. On the 
> > production system nagios cannot get a return value from the snmp daemon.
> > 
> > 5. So as the nagios id i then run the libexec/check_snmp program passing 
> > it the above information. It works as well
> > 
> > So what could be causing the nagios client to not be able to connect to 
> > the snmpdaemon?
> > 
> > All im getting back on this box is "SNMP problem - No data recieved from 
> > host "
> 
> I am having the same problem - intermittently.  I recently added SNMP
> monitoring to a completely functional nagios installation.  I have
> about 80 services that use check_snmp.  On two hosts, I see recurring
> errors as above, "No data received from host".  We have 156 services
> total that we are monitoring.
> 
> I've done extensive testing to prove to me that snmpget on the nagios
> server functions correctly.  I also did some load testing against the
> two problem hosts and was NEVER able to get snmpget to fail.
> 
> However, by putting a shell-script wrapper around snmpget and using that
> to log all calls from check_snmp, I am seeing cases where check_snmp
> *apparently* doesn't get any data back from snmpget.  I believe this
> is an issue with check_snmp.
> 
> I have tried several versions of the net-snmp/ucd-snmp package on
> both the nagios server and the affected hosts.  That had no effect.
> I have tried both 1.3.0b2 and 1.3b1 of the nagios-plugins.  Persistently
> "re-scheduling service checks" will cause this problem to disappear,
> sometimes for several days at a stretch.
> 
> Kelly
> 
> 
> 
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