> -----Original Message-----
> From: Akemi Yagi
> Sent: Thursday, January 15, 2015 12:05
>
> On Thu, Jan 15, 2015 at 8:43 AM, G Galitz <geoff at galitz.org>
wrote:
> >
> > Hi.
> >
> > We have another leap second coming. Have past bugs with
> Centos and leap
> > seconds (specifically high CPU spikes) been resolved?
> Should we be worried?
>
> Apparently Red Hat is well aware of the upcoming leap second:
>
> https://access.redhat.com/solutions/1317263
>
> Unfortunately all the related bugzilla reports are private so we
> cannot see the status.
It seems to boil down to: https://bugzilla.redhat.com/show_bug.cgi?id=479765
which is closed fixed. The private bugs are "pay attention" tickets,
but some do reference KB Article "Leap Seconds in Red Hat Enterprise
Linux".
A summary of Leap Seconds in Red Hat Enterprise Linux -
https://access.redhat.com/articles/15145
Issue:
6 different ways of saying "Will my system work?" .
Environment:
EL 4-7
Resolution:
For EL6 see:
* https://access.redhat.com/knowledge/solutions/154713
* https://access.redhat.com/knowledge/solutions/154793
* https://access.redhat.com/knowledge/solutions/173693
* https://access.redhat.com/knowledge/articles/199563
Otherwise if you run NTP resolution A else B
Resolution A:
NTP logging may crash EL 4/5, update your system.
EL4 see http://rhn.redhat.com/errata/RHSA-2009-1024.html
EL5 see http://rhn.redhat.com/errata/RHSA-2009-1243.html
EL6/7 not affected, but EL6 see https://access.redhat.com/site/solutions/154793
CPU usage sucks after leap second*
[*:side bar: see http://rhn.redhat.com/errata/RHBA-2012-1199.html for the patch
or do something like "date $(date +someformatthatworks)"]
PPC and IA64 arches will self destruct and should not use NTP
Resolution B:
Your time will be wrong and you should be happy. A new tzdata will come out see
bugs:
EL4: https://bugzilla.redhat.com/show_bug.cgi?id=1181975
EL5: https://bugzilla.redhat.com/show_bug.cgi?id=1181933
EL6: https://bugzilla.redhat.com/show_bug.cgi?id=1180536
EL7: https://bugzilla.redhat.com/show_bug.cgi?id=1181970
Root Cause:
https://what-if.xkcd.com/26/
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