Monitoring an intermittent host

[Rob Nelson]

>         Thanks that is a great idea,  IE if my checks are every 5 minutes 
> then I can set max check attempts to 25 and that will mean it has to be 
> down for over 2 hours before it sends me a note.  Thanks again, I new it 
> was something simple I was missing.

Actually, you want to listen to what the other poster said, with the 
retry_delay or whatnot. The reason you don't want to set max check attempts 
to 25 is that if, 5 minutes after the last successful check, the host is 
unavailable, Nagios stops processing ALL other host/service checks while 
determining the status of this host/server. So for the next 25 * X sec, 
Nagios is trying to talk to JUST that device. So after 75 seconds, Nagios 
waits another 5 minutes, then spends another 75 seconds checking just that 
host, etc.

This may or may not impact you that much. My system is running about 5-10 
checks per second, depending on how fast they return, so I lose 80-90% 
performance every time a single service is unavailable.


Rob Nelson
Network Administrator, Capitol Broadband
C: 919-369-1874
rob at capband.net 



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