Need help about "Unknown" status!

[jpttdi]

Hi all,
 
I need help to understand what mean "unknown" status.
Reading the documentation, i found that an unknown status is when Nagios can't retrieve output from the plugin.
 
Iuse Nagios 1.1 and i have several notifications related to plugin which switch from OK (or critical) state to an unknown state several times in a few minutes.
The example below is for a check, launch every 5 minutes, the checked process runs (hopefully) and when i try to launch the same command from the nagios server, the plugins answers fine every time !
If the unknown status is related to the fact that nagios cannot read plugin output, why can it get the comment field ?
 
I have this problem for several checks, not the same every time.
The check in the example below can run silently for a whole day or return alternatively unknown/ok status during hours !
 
[10-15-2003 08:43:28] SERVICE ALERT: dcs25;process launcher;OK;SOFT;2;OK - 1 process launcher running : PID= 806
[10-15-2003 08:42:28] SERVICE ALERT: dcs25;process launcher;UNKNOWN;SOFT;1;OK - 1 process launcher running : PID= 806
[10-15-2003 08:37:28] SERVICE ALERT: dcs25;process launcher;OK;SOFT;2;OK - 1 process launcher running : PID= 806
[10-15-2003 08:36:28] SERVICE ALERT: dcs25;process launcher;UNKNOWN;SOFT;1;OK - 1 process launcher running : PID= 806
[10-15-2003 08:31:28] SERVICE ALERT: dcs25;process launcher;OK;SOFT;2;OK - 1 process launcher running : PID= 806
[10-15-2003 08:30:28] SERVICE ALERT: dcs25;process launcher;UNKNOWN;SOFT;1;OK - 1 process launcher running : PID= 806
[10-15-2003 08:25:28] SERVICE ALERT: dcs25;process launcher;OK;SOFT;2;OK - 1 process launcher running : PID= 806
[10-15-2003 08:24:28] SERVICE ALERT: dcs25;process launcher;UNKNOWN;SOFT;1;OK - 1 process launcher running : PID= 806

Thanks.
Jpt.



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