configuration ntp on all servers
Esteban Torres Rodriguez
etorres at dap.es
Fri Nov 20 08:05:00 UTC 2009
Thank you all.
I will stop the services that is more secure.
It will make scheduled stops.
Phebe_Mertes at aotx.uscourts.gov wrote:
> NTDP when it uses a time server, will do small increments to slowly change
> the time.
>
> First, an hour off suggests you are not utilizing or have the wrong tzdata
> installed.
>
> Second, you can assign the rhel pool time servers to allow your servers to
> query a time server so they all become synchronized.
>
> in rhel, system-config-date allows you to set time zone, daylight savings
> and date. I do not recommend this if you are trying to not do a fast time
> change on your database logs. If you have little activity at 0200 hrs, then
> this might be a good time to use this.
>
>
>
>
> From: "Stainforth, Matthew (SD/DS)" <Matthew.Stainforth at gnb.ca>
>
> To: General Red Hat Linux discussion list <redhat-list at redhat.com>
>
> Date: 11/19/2009 07:05 AM
>
> Subject: RE: configuration ntp on all servers
>
> Sent by: redhat-list-bounces at redhat.com
>
>
>
>
>
>
>
>>> What happens to the logs if they suddenly tell you that you have to
>>>
>> go
>>
>>> to the past?
>>>
>>> That is my question.
>>>
>> An hour off is pretty serious. If it's really that bad, you have a
>> problem.
>> Least intrusive: jump it at 02:00, or jump it in maybe five minute
>> intervals
>> once or twice a day. I'd lean towards the former.
>>
>
> That could be even worse. My biggest concern would be the effect on redo
> logs. I don't know how oracle handles time jumps into the past but my fear
> would be if you ever had to apply those redo logs then they could be
> applied in the wrong order so recovery from backup would be impossible for
> any time span that contained a backward jump.
>
> I agree with Rob Marti, check with the DBAs to see if the operation is safe
> but my guess is they'll say no. If it were me, I would schedule an outage
> to bring the time back to normal and then enable NTP.
>
> Matt
>
> --
> redhat-list mailing list
> unsubscribe mailto:redhat-list-request at redhat.com?subject=unsubscribe
> https://www.redhat.com/mailman/listinfo/redhat-list
>
>
>
>
--
##################################################
# Esteban Torres Rodríguez #
# Área de Soporte Técnico #
# Subdirección de Sistemas Informáticos #
# Empresa Pública Desarrollo Agrario y Pesquero #
# email: etorres at dap.es #
##################################################
More information about the redhat-list
mailing list