NTP Issues Today

Wed Nov 21 00:56:40 UTC 2012

On Tue, Nov 20, 2012 at 7:49 PM, Jimmy Hess <mysidia at gmail.com> wrote:
> Are you sure that you are actually using NTP to set your clock?
> For you to sync with 2000,  you should have had multiple confused
> peers from multiple time sources;  possibly a false radio signal....
>
> NTP by default has a panic threshold of 1000 seconds.
>
> This  _should_   have caused NTP to execute a panic shutdown,
> instead of setting the clock back  30 million seconds.

For VMWare at least, their official recommendation[1] for NTP is to

tinker panic 0

for suspend/resume reasons. I've seen it default in some places.

[1] http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006427

-- 
Darius Jahandarie