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UCS Leap Second 2015

Keny Perez
Collaborator
Collaborator

I put this in the blog section already,but I want to be sure you can see it in case you are not familiar with the Community directory/layout:

 

Hello,


I just want make everyone aware of this bug about the leap second:

https://tools.cisco.com/bugsearch/bug/CSCus83447/?reffering_site=dumpcr

 

Symptom:
UCS Fabric interconnect reload or switchover may occur due to Leap second update.

Conditions:
UCS Version 2.2(x).
This problem does not occur on 2.1 or before.

Workaround:
Disable NTP at least one day (24 hrs) prior to the event. NTP servers typically send the information concerning the upcoming leap second up to a full day in advance.
After the occurrence of the leap second you can safely re-enable NTP.

Further Problem Description:
There is a known Linux Kernel caveat (discussed in public forum at
http://serverfault.com/questions/403732/anyone-else-experiencing-high-rates-of-
linux-server-crashes-today?answertab=active#tab-top). UCS 2.2.x version runs the affected version of the Kernel.

 

 

-Kenny

2 Accepted Solutions

Accepted Solutions

Walter Dey
Advocate
Advocate

Thanks Kenny

Just fyi: A leap second will be added on June 30, 2015 23:59:60 UTC.

http://www.timeanddate.com/time/leapseconds.html

Walter.

View solution in original post

Table 7 Resolved Caveats in Release 2.2(3e)

Defect ID
Description
First Bundle Affected
Resolved in Release

CSCus69458

The heap-based buffer overflow vulnerability in the GNU C library, documented in Common Vulnerability and Exposures (CVE) CVE-2015-0235 is addressed.

1.0(1e)

2.2(3e)A

CSCus83447

Cisco UCS Fabric Interconnect reload or switchover due to a leap second update no longer occurs.

2.2(1b)A

2.2(3e)A

View solution in original post

12 Replies 12