[ntp:questions] NTP client syncs successfully with NTP server within local network but not with the NTP pool servers

Brian Utterback brian.utterback at oracle.com
Wed Jan 9 13:20:07 UTC 2013


On 1/9/2013 12:41 AM, Arpith Nayak wrote:
> Adding my .conf file:
>
> driftfile /tmp/ntp.drift/
> server 0.pool.ntp.org
> server 1.pool.ntp.org
> server 2.pool.ntp.org
> server 3.pool.ntp.org
>
> Adding ntpq -p data:
>
> [Thu Feb 10 12:55:51 root at root-ubuntu:~]# ntpq -p 0.pool.ntp.org
>
>       remote           refid      st t when poll reach   delay   offset  jitter
> ==============================================================================
> *64.147.116.229  .ACTS.           1 u  151 1024  377    2.439   -0.632   0.052
> +131.107.13.100  .ACTS.           1 u  879 1024  377   27.853    1.041   0.539
> -time.nrc.ca     132.246.11.231   2 u  989 1024  377   86.821   -4.132   8.778
> -time1.chu.nrc.c 209.87.233.52    2 u   53 1024  377  109.221    3.153   9.377
> +dense.utcc.utor 128.100.200.166  2 u   88 1024  377   64.115   -1.841   0.454
> -dns4.utoronto.c 128.100.103.253  2 u  167 1024  377   65.252  -43.422  56.093
> _______________________________________________

Of much greater use would be "ntpq -p" from the system having the 
problem. Is ntpd still running on that system or has it exited. If it 
has exited, you should check the syslog for any messages. If it hasn't 
the ntpq output would be the next step to seeing what is happening.

By the way, the output of "ntpq -p 0.pool.ntp.org" isn't very useful for 
another reason. Since this is a roundrobin DNS address, there isn't any 
guarantee that it is even the same system that the ntpd process is using.

Brian.


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