[Nagios-users] Nagios fails the SNMP check, command line works fine

[Ajitabh P. <aji...@gm...>]

Hi,

I am facing a very strange problem. This problem is only on certain 
hosts. The monitored hosts are a mix of win2k and win2003 servers with 
SNMP enabled.

When I run the plugins from command line (see below):

/usr/lib/nagios/plugins/contrib/check_snmp_storage.pl -H 
myhost01.tld.com  -C public -2 -T pu -m ^C -w 80 -c 90
C:\ Label:System  Serial Number d04cc42c: 59%used(6524MB/11112MB) (<80%) 
: OK

[ajitabhp@nagios01 services]$ 
/usr/lib/nagios/plugins/contrib/check_snmp_storage.pl -H 
myhost01.tld.com  -C public -2 -T pu -m ^D -w 80 -c 90
D:\ Label:Data  Serial Number 1442142f: 71%used(364130MB/514064MB) 
(<80%) : OK

[ajitabhp@nagios01 services]$ 
/usr/lib/nagios/plugins/contrib/check_snmp_storage.pl -H 
myhost01.tld.com  -C public -2 -T pu -m Physical -w 80 -c 90
Physical Memory: 88%used(3168MB/3582MB) (>80%) : WARNING

[ajitabhp@nagios01 services]$ 
/usr/lib/nagios/plugins/contrib/check_snmp_storage.pl -H 
myhost01.tld.com  -C public -2 -T pu -m Virtual -w 80 -c 90
Virtual Memory: 52%used(3871MB/7428MB) (<80%) : OK

They all work. But the same plugins commands when run by nagios gives me 
error:
ERROR: Description/Type table : No response from remote host '192.168.0.110'

This problem is on certain hosts (around 10-15) and is working fine on 
some other 300+ servers. I have listed only few checks, but the fact is 
all SNMP checks are giving exactly the same problems. Other checks viz 
direct TCP port connections, HTTPD service checks etc are working fine.

What could be the reason? Nagios version is 2.8 and all plugins are 
downloaded from nagiosexchange website. I dont have any reason to 
suspect my command and service definitions as the same checks are 
working ok for other similarly configured hosts.

I am in a sort of urgent need of a solution, so an early reply will be 
appreciated

Regards.
Ajitabh Pandey