[ntp:questions] panic_stop with ntpd v4.2.6p3

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Wed Jan 30 19:39:03 UTC 2013


John Connor wrote:
> I'm running ntpd v4.2.6p3 on Solaris 8 (I know; necessity..)
>  and recently it experienced a panic_stop event:
> 25 Jan 11:31:32 ntpd[244]: 82.219.4.30 961a 8a sys_peer
> 25 Jan 19:17:19 ntpd[244]: 0.0.0.0 0628 08 no_sys_peer
> 25 Jan 21:19:03 ntpd[244]: 82.219.4.30 961a 8a sys_peer
> 25 Jan 21:19:03 ntpd[244]: 0.0.0.0 0617 07 panic_stop -741 s; set clock manually within 60 s.

It didn't have any useable servers for two hours?
 ... and after two hours it was 741 seconds off?

  Either your hardware / OS platform is worse than a sundial
    that your gardener moves around all the time;
   or some other process is screwing with the time.


> Config file as follows:
> restrict default nomodify notrap
> restrict 127.0.0.1
> restrict 62.60.123.0 mask 255.255.255.0

restrict source nomodify notrap #Also; For pool servers


> server 0.uk.pool.ntp.org
> server 1.uk.pool.ntp.org
> server 2.uk.pool.ntp.org
> server 3.uk.pool.ntp.org

#instead; It will pull up to max clock (10) servers and replace them as needed
pool uk.pool.ntp.org iburst preempt
pool europe.pool.ntp.org iburst preempt


> driftfile /etc/ntp.drift
> logconfig=syncall +clockall +sysall +peerall
> logfile /data/ntp.log
> tinker panic 60

Why not just start NTP with -g ?
 It should only have any large step when starting (once).


> #
>
> I have noticed a number of large spikes:
> 27 Jan 12:26:32 ntpd[21030]: 0.0.0.0 0613 03 spike_detect -20.998734 s
> 27 Jan 12:44:29 ntpd[21030]: 0.0.0.0 061c 0c clock_step -20.998740 s
> 28 Jan 14:49:43 ntpd[21030]: 0.0.0.0 0613 03 spike_detect +41.002124 s
> 28 Jan 15:25:10 ntpd[21030]: 80.93.163.202 961a 8a sys_peer
> 28 Jan 15:25:10 ntpd[21030]: 0.0.0.0 061c 0c clock_step +41.002456 s
>
> Any advice would be appreciated.

21 and 41 second jumps ?

 Something or someone is screwing with your time.
  ... or it is a virtual server that sleeps a lot.


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