Redundancy: duplicate websites on different servers?

[Mark_Andrews at isc.org]

> I have my domain name website hosted on an NT4-server,
> with an unique IP.   [main server]
> 
> I have a duplicate website hosted on another server,
> with a different unique IP.   [backup server]
> 
> I am using bind.
> 
> Question:
> --------------
> 
> How can I configure bind to send people to the backup
> server if,(and only if), the primary server is down,(ie. not
> responding)?

	You implement a sdb module that checks the availabilty of the
	web server and returns different answers based on the results.

	Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org