[ntp:questions] NTP not syncing
Richard B. Gilbert
rgilbert88 at comcast.net
Sat May 5 17:21:02 UTC 2007
> I have a GPS based NTP server on my network. It is synchronized perfectly
> with the GPS receiver.
> I have many Gentoo based Linux servers on the same network. They are all
> working fine
> However, they do not want to seem to sync to the server at all.
> They send UDP request out to the server and get UDP replies back as seen by
> They dont dont want to sync up at all.
> I am running ntp 4.2.4
> My server statement is server ntpserver01 iburst burst maxpoll 7
> Anybody got any clues as to why they dont sync or how to fix it or even
> debug why NTP
> does not seem to like the server.
Start by removing the "burst" and "maxpoll 7" from your server statements!
Ntpd is designed to adjust its poll interval between the default values
of MINPOLL and MAXPOLL as needed. Changing these defaults is almost
never the right thing to do.
If you are really smart enough to tinker with the design of ntpd, you
probably don't need any help we can give!
The burst keyword is a special purpose hack designed, I believe, for
dialup connections made at very long intervals (many hours). It was not
intended for general use and its use is considered abusive unless you
own the server or have the owner's permission! In this case you
apparently own the server but there is no benefit to to be had from
Start ntpd with the "-g" option. This will cause ntpd to set the clock,
on a one time basis, to a reasonable approximation of the correct time.
Wait at least thirty minutes and issue:
If things don't appear to be working, post the output.
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