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Re: [PLUG] reducing DNS expiry value
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If you want to switch without any downtime, I suggest either running 2
servers simultaneously (not always practical) or setting up a reverse
proxy (like varnish) to forward connections to the new server until
the cache refreshes.
-Jon
On Mon, Feb 9, 2009 at 5:19 PM, Bill Hance <bill@billhance.com> wrote:
> I am going to be changing the IP address of a web and email server. I
> also serve the DNS for the domain. Is it the BIND "expiry" value that I
> want to reduce to something like one hour in advance of the change?
> There are configurable values for refresh, retry, expiry, and minimum
> TTL.
>
> I set the expiry value from 4W to 1D for all my domains a few weeks ago,
> and want to make sure I'm on the right track. If I understand the
> process correctly, a couple of days prior to the change, I could change
> the expiry value to 1H.
>
>
> ___________________________________________________________________________
> Philadelphia Linux Users Group -- http://www.phillylinux.org
> Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
> General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
>
___________________________________________________________________________
Philadelphia Linux Users Group -- http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
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