[Nagiosplug-help] check_ntp

[Leif Nixon]

Brian Ipsen <bipsen-sender-67dee9 at andebakken.dk> writes:

>  Using check_ntp on a host, I sometimes get a critical notification:
>
> NTP CRITICAL: server 192.168.0.178, stratum 3, offset 0.000000, delay
> 0.02563
>
> And when it returns to normal:
>
> NTP OK: Offset -0.000001 secs, jitter 0.288 msec, peer is stratum 2
>
> The offset is not out of range (suning defaults), but is it the missing
> jitter-information, that causes the plugin to return critical condition ?

The NTP plugin considers an offset of exactly 0 to be "probably
bogus", according to comments in the code.

I have no idea why.

-- 
Leif Nixon                                    Systems expert
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National Supercomputer Centre           Linkoping University
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