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 :: Mailing Lists

[ILUG] NTP.

[ILUG] NTP.

Shaun Laughey shaun at laughey.com
Fri May 4 14:31:30 IST 2012


On 4 May 2012 14:18, Darragh Ó Héiligh <d at digitaldarragh.com> wrote:
>
> Good afternoon,
>
> This morning I encountered a strange issue.
>
> After porting an NTP VM to a new ESXI cluster the Debian server inherited it's time from the ESXI host.
>
> As luck would have it, the NTP details on the ESXI host were configured incorrectly and this set the time ahead by an hour.
>
> The option to synchronize time between the ESXI host and the VM guest is disabled on the properties of this machine therefore I'm not sure how this would have happened?
>
> Also, is it possible to have the NTP daemon synchronize it's time and ignore any time set manually on the server using date?
>
Hi Darragh,

You might have been bitten by a feature of ESXi especially if you
moved it using vmotion.

"In the VMware Tools control panel, the time synchronization checkbox
is unselected, but you may experience these symptoms:

When you suspend a virtual machine, the next time you resume that
virtual machine it synchronizes the time to adjust it to the host.
Time is resynchronized when you migrate the virtual machine using
vMotion, take a snapshot, restore to a snapshot, shrink the virtual
disk, or restart the tools service in the virtual machine (including
rebooting the virtual machine)."

The rest of the info:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006427


Regards,
Shaun Laughey


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