[CentOS] ntp will not drift to correct time

Wed Aug 12 15:58:30 UTC 2009
Alan Sparks <asparks at doublesparks.net>

Tom Brown wrote:
> Hi
>
> On 5.3 i have a situation where some boxes have been 3 or 4 seconds out 
> and restarting ntpd has fixed the issue.
>
> What i dont understand is why the clocks did not drift to the correct 
> time when the config seems correct in that restarting ntp did correct 
> the time.
>
> Is there something 'special' i need to do in order for the drift to work?
>   
Is the directory /var/lib/ntp present, and with write permissions for
the 'ntp' user?  Does the drift file exist?
Does ntpd ever lock in?  What do you see in 'ntpq -p' over time?
Are these heavily-loaded boxes, or boxes with wildly-varying loads?
-Alan