> -----Original Message-----
> From: centos-bounces@xxxxxxxxxx
> [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Simon Billis
> Sent: Thursday, August 12, 2010 8:14
> To: 'CentOS mailing list'
> Subject: Re: Date drift and ntpd
>
> Hi,
>
> > > Jason Pyeron sent a missive on 2010-08-12:
> > >
> > > > We have a local time server and all of our machines are
> > > pointed at it
> > > > for the time.
> > > >
> > > > How can the clock drift by a day and a half?
> > > >
> > > > [root@devserver21 ~]# date
> > > > Fri Aug 13 14:43:29 EDT 2010
> > > > [root@devserver21 ~]# rdate -s 192.168.1.67
> > > > [root@devserver21 ~]# date
> > > > Thu Aug 12 07:02:39 EDT 2010
> > > > [root@devserver21 ~]# cat /etc/ntp.conf | grep -v ^# |
> grep -v ^$
> > > > restrict default nomodify notrap noquery restrict
> 127.0.0.1 server
> > > > 192.168.1.67 server 192.168.1.66 server 192.168.1.65
> > > > server 127.127.1.0 # local clock
> > > > fudge 127.127.1.0 stratum 10
> > > > driftfile /var/lib/ntp/drift
> > > > broadcastdelay 0.008
> > > > keys /etc/ntp/keys
> > > >
> > > >
> > >
> > > Hi,
> > >
> > > It is unlikely that the machine in question drifted
> forward in time
> > > if ntpd was running. Have a look at the logs /var/log/messages it
> > > should contain the ntpd log messages
> >
> > [root@devserver21 ~]# grep ntpd /var/log/messages </snip>
> /SNIP
> > Jul 29 17:47:24 devserver21 ntpd[3475]: synchronized to LOCAL(0),
> > stratum 10 Aug 12 22:48:29 devserver21 ntpd[3475]:
> > sendto(192.168.1.66): Operation not permitted
> > [root@devserver21 ~]# uptime
> > 08:10:19 up 164 days, 9:56, 2 users, load average: 0.20, 0.54,
> > 0.81
> > [root@devserver21 ~]#
>
> What happened between July 29 and now? Is there nothing in
> the logs for that period?
>
Nothing of note, I do have full logs from those days...
[root@devserver21 ~]# grep ' 00:00:.. devserver21 arpwatch: bogon 192.168.1.67
0:30:67:0:cf:fd' /var/log/messages
Jul 26 00:00:37 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Jul 27 00:00:47 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Jul 28 00:00:44 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Jul 29 00:00:41 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Jul 30 00:00:08 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Jul 31 00:00:08 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 1 00:00:14 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 2 00:00:22 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 3 00:00:11 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 4 00:00:58 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 5 00:00:06 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 6 00:00:06 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 7 00:00:03 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 8 00:00:43 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 9 00:00:16 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 10 00:00:08 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 11 00:00:34 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 12 00:00:19 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
Aug 13 00:00:20 devserver21 arpwatch: bogon 192.168.1.67 0:30:67:0:cf:fd
[root@devserver21 ~]#
--
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- -
- Jason Pyeron PD Inc. http://www.pdinc.us -
- Principal Consultant 10 West 24th Street #100 -
- +1 (443) 269-1555 x333 Baltimore, Maryland 21218 -
- -
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This message is copyright PD Inc, subject to license 20080407P00.
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