-----Original Message----- From: Akemi Yagi Sent: Thursday, January 15, 2015 12:05
On Thu, Jan 15, 2015 at 8:43 AM, G Galitz geoff@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:
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