REMINDER: LEAP SECOND

Matthew Huff mhuff at ox.com
Wed Jun 24 18:47:16 UTC 2015


Does anyone know what the latest that we can run our NTP servers and not distribute the LEAP_SECOND flag to the NTP clients?


> On Jun 24, 2015, at 2:33 PM, Tore Anderson <tore at fud.no> wrote:
> 
> * Majdi S. Abbas
> 
>> On Wed, Jun 24, 2015 at 08:33:14AM +0200, Tore Anderson wrote:
>>> Leap years and DST ladjustments have never caused us any major
>>> issues. It seems these code paths are well tested and work fine.
>> 
>> 	I've seen quite a few people that for whatever reason insist
>> on running systems in local time zones struggle with the DST reverse
>> step.  It's not nearly as much of a non-issue as you claim.
> 
> Read again, and note the word "us". I am describing my and my
> employer's experience with past DST changes and leap years, and those
> have indeed been completely uneventful.
> 
> YMMV.
> 
>>> The leap second in 2012 however ... total and utter carnage.
>>> Application servers, databases, etc. falling over like dominoes. All
>>> hands on deck in the middle of the night to clean up. It took days
>>> before we stopped finding broken stuff.
>> 
>> 	"Total and utter carnage" is a bit of a stretch.
> 
> As above, I am speaking only about how the 2012 leap second went down
> in our infrastructure. I stand by how I described the event.
> 
> Again, YMMV. If you plan on let your infrastructure deal with the
> upcoming leap second head-on, I wish you the best of luck. Hopefully
> all the bugs from 2012 have been fixed. I, however, certainly have no
> intention of being the one to find out otherwise.
> 
> Tore




More information about the NANOG mailing list