[Nagiosplug-help] Problems with check_ntp_time v1.4.14 NTP CRITICAL: Offset unknown|

[Thomas Guyot-Sionnest]

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On 17/02/10 07:55 AM, Elie Delorme wrote:
> All servers I poll have the same ntp configuration, it looks like the
> plugin can't handle some offsets,
> most of the time everything is fine, then I randomly get an "Offset
> unknown" for a server.

The Offset unknown error is usually shown when the remote peer is not
synchronized, which may happen from time to time even on a healthy NTP
server. In most cases the check should recover before hitting
max_check_attempt; if not then you may have to look at your nagios
settings (how many attempts and at which interval?) or check if there's
a problem with the remote NTP server(s) itself (you may be using servers
that are going down often).

Since you're using check_ntp_time I guess you're checking the time delta
with a remote peer - in that case you can use something like
us.pool.ntp.org instead of a single NTP server, this way check_ntp_time
will select up to 4 servers out of the multiple returned IPs and select
the best one for calculating the time delta.


Also, for both check_ntp_time and _peer, you can use the -q (--quiet)
switch to make that UNKNOWN instead of critical, which depending on your
settings may cause less nuisance or no nuisance at all.

- --
Thomas
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