ntpd time slewing
I'm having some trouble getting a server to keep proper time.
What's got me at a loss is that this is one of two almost identical machines
and the other one is fine, always has been. The only difference I can see in
the configurations are the $NTPSERVERS lists. They are different based on
their geographic proximity to different time servers. (these servers are not
in the same city)
This is what I've been doing with the "broken" time-server this morning.
purged adjtimex.
purged everything matching 'dpkg -l ntp*'
'apt-get install -t testing ntpdate ntp-simple'
(this might have been -unstable)
Allowed it to everwrite anything left behind (/etc/init.d/ntp-simple).
added stratum 2 time servers to the ntp-servers default file:
NTPSERVERS="clock.sjc.he.net ntp.ucsd.edu ntp1.sf-bay.org ntp2.sf-bay.org
time.berkeley.netdot.net"
set the time using 'ntpdate -b {list of time servers here}'
a couple of times in a row. Came up with a nice 0.00xx response.
I then started up ntpd and here is what I have in the logs:
5 Sep 04:38:55 ntpd[18631]: ntpd exiting on signal 15
5 Sep 04:43:24 ntpd[18928]: signal_no_reset: signal 17 had flags 4000000
5 Sep 04:47:42 ntpd[18927]: time set -0.052783 s
5 Sep 04:47:42 ntpd[18927]: synchronisation lost
5 Sep 05:03:54 ntpd[18927]: time reset -1.998872 s
5 Sep 05:03:54 ntpd[18927]: synchronisation lost
Started ntpd at 04:43:24.
20 minutes later I'm almost 2 seconds off.
That's almost a minute a day.
I have no /etc/ntp.drift file
I have nothing in /var/lib/ntp/
I have not rebooted since any of this began. Don't believe it's necessary yet.
Update:
5 Sep 05:18:11 ntpd[18927]: time reset -1.902610 s
5 Sep 05:18:11 ntpd[18927]: synchronisation lost
Does this mean it's getting better?
compared to 05:03:54 time entry above maybe, but 0.09 seconds isn't something
to write home about...
Or is there something else I need to do in order to fix it up?
For a simple 'star' topology on private LANs, is there a better solution for
the server than ntpd?
Thanks in advance.
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disaster Movie!!
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