[geeks] Remote Failover

[Bill Bradford]

On Tue, May 20, 2008 at 11:47:43AM -0400, Sridhar Ayengar wrote:
> I'd like it to happen something like:
> 1.	One of the web servers notices that another is down.
> 2.	The web server that noticed the error sends a message to the DNS server 
> updating the "www" CNAME to remove the downed machine.
> 3.	The downed machine comes back up and notices that it is no longer
> in the DNS round-robin so it sends a message to the DNS server to add
> itself back into the "www" CNAME.

DNS round-robin is a really poor way to do failover/balancing, due to TTL
and caching.  Why not use Ethernet load balancing, etc (LocalDirector and
so forth)?

Bill

-- 
Bill Bradford 
Houston, Texas