Dynamic update of virtual hosting domains
Stephane Bortzmeyer
bortzmeyer at nic.fr
Wed Jan 30 09:46:55 UTC 2008
On Tue, Jan 29, 2008 at 11:37:40AM +0100,
Peter Rabbitson <rabbit+list at rabbit.us> wrote
a message of 29 lines which said:
> www cname @
...
> Sometimes I need to change <IP of web server> automatically, however enabling
> dynamic updates on all (currently 9) virtual host domains seems ugly. I know I
> can use the DNAME RR, but from my googling it seems that it is not favored in
> todays infrastructure. Is there a way to organize things in such a manner, so
> that the A record can point to a single place which can be then dynamically
> updated?
Why not deciding that www.dynamic-domain.example.org is the canonical
name for your Web servers? In each zone, you put an alias:
www CNAME www.dynamic-domain.example.org.
and you just update dynamic-domain.example.org.
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