Performance data not being returned

[Jonathan Gazeley]

Some time ago I set up a bunch of Nagios checks including graphing of 
performance data for various services. It all worked fine. I've just had 
cause to look at the graphs and I noticed that performance data stopped 
being logged a few weeks ago.

Nagios no longer seems to read in the performance data for this one 
service check - other services are OK. Nagios correctly reports the 
status and the status information string, but seems to not accept the 
performance data.

The plugin is being executed through NRPE. Executing the plugin by hand 
seems to return valid perfdata:

[jg4461 at dhcp1 ~]$ /usr/lib64/nagios/plugins/check_dhcpd_pools
OK - all pools less than 80% full | 'resnet-wireless-652'=43.769%;80;90, 
'resnet-wireless-653'=47.923%;80;90, 
'resnet-wireless-654'=46.201%;80;90, 
'resnet-wireless-655'=44.681%;80;90, 
'resnet-wireless-656'=47.720%;80;90, 
'resnet-wireless-657'=47.112%;80;90, 
'resnet-wireless-658'=42.452%;80;90, 'resnet-wireless-659'=0.304%;80;90, 
'resnet-wireless-ratelimited-660'=1.114%;80;90, 
'resnet-wireless-onlinepayment-661'=0.405%;80;90, 
'resnet-wireless-onlinepayment-662'=0.405%;80;90, 
'resnet-wireless-onlinepayment-663'=0.304%;80;90, 
'resnet-wireless-consoles-665'=1.114%;80;90, 
'resnet-wireless-message-666'=0.000%;80;90, 
'resnet-wireless-instructions-667'=8.056%;80;90

The plugin worked perfectly in the past and I'm not aware that anything 
has changed since. I've checked that permissions are OK and that SELinux 
isn't preventing it from working.

Can anyone suggest a sensible course of action to troubleshoot this 
plugin - where I might look to try and work out where the perfdata is 
being lost?

Thanks,
Jonathan

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