2015 Cisco “leap second” workaround in UCS Central

Easy work around in Cisco UCS Central. First win (for me) with UCS Central.

Delete the NTP Servers in Central, and add back after event. Have done some testing and it looks good. NTP Servers update immediately on UCS after Central is updated.

My Test

Ensure UCS is using Central for time:

Add NTP Servers in Central:

Check UCS after NTP Servers Added:

UCSLAB-A# connect nxos

UCSLAB-A(nxos)#

UCSLAB-A(nxos)# show running-config ntp

!Command: show running-config ntp
!Time: Wed Jun  3 20:33:43 2015

version 5.2(3)N2(2.23d)
ntp server 1.2.3.4
ntp server 2.3.4.5

Delete NTP Servers in Central:

Check UCS after NTP Servers Deleted:

UCSLAB-A(nxos)# show running-config ntp

!Command: show running-config ntp
!Time: Wed Jun  3 20:35:09 2015

version 5.2(3)N2(2.23d)

Add NTP Servers in Central:

Check UCS after NTP Servers Added:

UCSLAB-A(nxos)# show running-config ntp

!Command: show running-config ntp
!Time: Wed Jun  3 20:36:54 2015

version 5.2(3)N2(2.23d)
ntp server 4.3.2.1
ntp server 8.7.6.5

 

The NTP Servers on UCS match Central almost instantly after Central NTP change.