Re: DNS & multiple names and copy statements

[Mark Burgess]

No, I am not sure what to think about this.

M

On Mon, 2005-12-05 at 16:05 -0800, Martin, Jason H wrote:
> Has there been any thought into having CFE do failover based on a given
> name returning multiple IP addresses? Lets  say www.yahoo.com was
> hosting my CFE server:
> 
> # host www.yahoo.com
> www.yahoo.com is an alias for www.yahoo.akadns.net.
> www.yahoo.akadns.net has address 68.142.197.85
> www.yahoo.akadns.net has address 68.142.197.64
> www.yahoo.akadns.net has address 68.142.197.65
> www.yahoo.akadns.net has address 68.142.197.67
> www.yahoo.akadns.net has address 68.142.197.68
> www.yahoo.akadns.net has address 68.142.197.76
> www.yahoo.akadns.net has address 68.142.197.80
> www.yahoo.akadns.net has address 68.142.197.83
> 
> Cfagent could iterate over the whole list trying to perform a copy,
> instead of requiring the user to add a 'failover=' line (which is
> therefore limited to just 2 potential sources). One could even expand on
> that to have it randomly choose from the list or do some sort of check
> (ie ping) to try them in some order. This would be very handy when one
> has CFE clients on opposite ends of a 3-way WAN pipe with a CFE server
> on each end. Clients would pick the best available server and fail over
> to the next best on down until they get one that worked.
> 
> I realize one can do this now in a basic form by determining the server
> value based on the current subnet, but this limits one to only a 2-way
> failover. Something more flexible would be handy.
> 
> Thank you,
> -Jason Martin
> 
> 
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