Re: FreeBSD date drifts significantly

On 11/21/06, Eric <heli@xxxxxxxxxxxxxxx> wrote:
Neil Short wrote:
> my FreeBSD date drifts out of sync with the system
> date.
>
> When I set it, it is absolutely correct and matches
> the system (CMOS) date. I then reboot and - shezam!
> it's jumped 12 hours forward. Reboot again - another
> 12 hour jump ... until the FreeBSD date is about 2 and
> a half days beyond today's date - and the CMOS date.
>
> When I set up the system I said that the system clock
> is NOT set to UTC - but just to be sure, I went back
> into sysinstall and re-set the time zone the same way
> (MST - Arizona).
>
> I suspect this has something to do with maybe the
> server that is synchronizing my time; but I don't
> recall how to synchronize my time with an up-stream
> server. Can't find documentation on it either.
>
> Any pointers?
>

man ntpd

has your answers. my /etc/ntp.conf looks like:

server us.pool.ntp.org
server 0.pool.ntp.org
server 1.pool.ntp.org
driftfile /var/db/ntp.drift

us.pool.ntp.org is just a meta pointer to one of the servers in the us
pool - so you could be pointing/asking 0.pool.ntp.org twice. Usually
just us.pool.ntp.org is good enough. Unless your obsessive like me
and list, 0,1,2 and 3.us.pool.ntp.org

++1 on http://www.pool.ntp.org/ -- great redundancy and you don't end
up hard coding time servers that may go away or drop their public
access. If you don't have your own cesium clock it's a cheap
replacement <g>.
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