Single vs Dual Reverse Proxy

[Charles W Buege <cbuege@xxxxxxxxxxxxx>]

All - 

I've gotten Apache working with a single
Reverse Proxy to both of my web servers (much thanks go to Yehuda for your
assistance!!), but I'm trying to take this to a next step.

Attached, you will find an image with
my current reverse proxy setup and then what I'd like to move to next.
 

My biggest concern is that with a single
reverse proxy that I still have a single point of failure for external
access to the site.  What I'd like to do is setup two servers with,
I'm guessing here, High Availability between each other so I can eliminate
the single point of failure/allow me to do maintenance as I need to.

Anyone have any suggestions as to how
I'd want to proceed with this?  I'm starting by reading this article
(http://www.howtoforge.com/high_availability_heartbeat_centos)
to see if this will get me what I need, but if anyone has any suggestions
as to another article/reference I should look at for this, I'm all ears.
 I'm also a little concerned as this article is from 2007 and I'm
thinking there may be a better/different way for me to accomplish what
I am trying to do.

If anyone wants me to upload any of
the config files I am using to look at, just tell me what files you want
to see and I'll post them.

Thanks in advance,
Charles








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