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Re: NTP weirdness

On Mon, 16 Oct 2006, Roberto C. Sanchez wrote:
> I have two machines which are running NTP.  They both synchronize to
> these servers in /etc/ntp.conf:
> server ntp2.usno.navy.mil
> server ntp-1.vt.edu
> server ntp-2.vt.edu
> Now, here is where the weidrness comes in.  The two servers' clocks are
> perfectly in sync.  I have three machines (2 desktops/1 laptop)  which
> synchronize to the two above named servers (not the upstream NTP
> servers).  Anyhow, two of them are always within five seconds of the two
> local NTP servers.  The third machine gains about 5 minutes every two

Any NTP drift above half a second means something is completely broken, so
*none* of your client machines are working fine.  The two servers seem to
work right.  Make sure to also configure the two servers to *peer* each
other, btw.

Are your NTP servers configured to allow the other client machines (the two
desktops and the laptop) to establish a client relationship with them?  What
does ntpq -p outputs on the client machines?

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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