Erroneous Leap Second Introduced at 2014-06-30 23:59:59 UTC

Daniël W. Crompton daniel.crompton at gmail.com
Tue Jul 1 10:52:11 UTC 2014


That's strange as I remember reading this yesterday: NO leap second will be
introduced at the end of June 2014.

http://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat

D.


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On 1 July 2014 04:27, Majdi S. Abbas <msa at latt.net> wrote:

> On Mon, Jun 30, 2014 at 05:33:52PM -0700, Tim Heckman wrote:
> > I just was alerted to one of the systems I managed having a time skew
> > greater than 100ms from NTP sources. Upon further investigation it
> > seemed that the time was off by almost exactly 1 second.
> >
> > Looking back over our NTP monitoring, it would appear that this system
> > had a large time adjust at approximately 00:00 UTC:
>
>         Okay.  Do you have any logging configured (peerstats, etc?) for
> ntpd?
>
> > A few of our systems did alert early this morning, indicating they
> > were going to be receiving a leap second today. However, I was unable
> > to determine the exact cause for NTP believing a leap second should be
> > added. And after some time a few of the systems were no longer
> > indicating that a leap second would be introduced.
>
>         This can happen if a server is either passing along a leap
> notification that it received, or is configured to use a leapseconds
> file that is incorrect.
>
> > This specific system is hosted in AWS US-WEST-2C and uses the
> > 0.amazon.pool.ntp.org pool.
>
>         0 is just one server in the pool (whichever you draw by
> rotation); is this the only server you have configured?
>
>         --msa
>


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