Date: Tue, 17 Oct 2006 15:40:11 -0700 From: Chuck Swiger <cswiger@mac.com> To: Zbigniew Szalbot <zbyszek@szalbot.homedns.org> Cc: freebsd-questions@freebsd.org Subject: Re: ntpd not adjusting the clock? Message-ID: <F5EF37C8-7955-4246-932E-833A537A4009@mac.com> In-Reply-To: <20061018000853.O49453@192.168.11.51> References: <20061018000853.O49453@192.168.11.51>
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On Oct 17, 2006, at 3:13 PM, Zbigniew Szalbot wrote:
> My ntp.conf file looks like that:
>
> server 2.pl.pool.ntp.org prefer
> server 1.europe.pool.ntp.org
> server 0.europe.pool.ntp.org
> restrict default ignore
> driftfile /var/db/ntp.drift
Unless you've got additional restrict lines which permit some hosts
to make changes, using only "restrict default ignore" will prevent
ntpd from paying attention to the timeservers you've listed and it
will even prevent ntpd from changing the local clock or being
administered via ntpq from localhost.
This misconfiguration will also cause your ntpd to generate excessive
numbers of queries, rather than syncing up and reducing the NTP
polling interval from minpoll to maxpoll. [1]
Remove that line and restart ntpd.
> The rc.conf file has these lines:
> ntpd_enable="YES"
> ntpd_flags="-g -c /etc/ntp.conf -p /var/run/ntpd.pid -f /var/db/
> ntp.drift"
>
> What am I doing wrong that instead of having the time synced I see
> more and more discrepancy. When I rebooted and started the service
> 6 days ago there was about 20 seconds difference. Now it is well
> over 30.
Run:
ntpq -c peers
...and you will be able to see the delay and offset from the NTP
clocks you've configured in ntp.conf.
--
-Chuck
[1]: There are entire Linux distributions which have shipped with
ntp.conf configured to prevent ntpd from working properly. These
client machines end up querying NTP servers in the pool.ntp.org
service repeatedly at minpoll (or even faster, if iburst is
specified) because they discard the responses given to them, and
therefore constitute an abuse of NTP server resources.
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