Aaron Lippold wrote:
Hi,
Thanks so much for the thoughts. So, I would assume then that a 'Xen
production env' has advantages not really in quote unquote
consolidation but flexibility?
Consolidation and resource utilization can be valuable -- especially
when existing apps are originally speced out to run on different boxes
and there's
no reason they need that much hardware. There are also the hardware
isolation / QA advantages.
What's the one line ROI then to the
management in your opinion?
I want to help, but I don't speak MBA-language :)
A
On 10/23/07, Richard W.M. Jones <rjones@xxxxxxxxxx> wrote:
Richard W.M. Jones wrote:
We found virtualisation made a great solution for isolating different
servers from each other. We had previously had a problem where our
Apache required so many different modules to support the various
different services we were running that the Apache config became
extremely fragile. No such problem with Xen however since we just ran
different Apache instances on different guests, with a web accelerator
in front of them (a stripped down Apache with mod_proxy) so that all the
backend Apaches would appear on the same IP address. You could reboot a
backend server easily if it failed without affecting any other
production service.
I should add that if you do consider an Apache configuration like the
above, then this little module is an absolute life-saver:
http://stderr.net/apache/rpaf/
Rich.
--
Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/
Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod
Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in
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