[olug] Border management / server farms

[Nick Walter]

Oddly enough, I was in the UK setting up something like this last week.

For the webservers you can do a couple of things.  Since my webservers
were actually Tomcat application servers I used tomcat load balancing. 
My initial recommendation had been to use Linux Virtual Server but the
customer didn't want to pay for additional front-end servers.  The
back-end was Oracle 9i real application clusters.  The load balancing
among tomcat would keep requests going to live servers in the event of
an application server outage, and the 9i RAC plus oracle Transparent
Application Failover would re-direct requests away from downed db
nodes.  It worked pretty sweet, but the Oracle 9i RAC was an awful
expensive component.

Nick Walter


On Wed, 2004-02-04 at 10:09, Jay Hannah wrote:
> Howdy --
> 
> Here's a pie in the sky question for you...
> 
> Anyone have any experience high availability web/database farms?
> 
> I want to have X web servers and Y databases. I need some magical 
> device that can know when server(s) in the farm(s) are offline, happily 
> continuing to route requests to the other server(s) that are online.
> 
> Preferrably I'd use some slice of Linux magic. Alternately, I could 
> spend $10K or whatever on some device from Cisco. This is all 
> hypothetical at this point, looking at options.
> 
> I'm just looking for ballpark info (product names) from anyone w/ any 
> experience.
> 
> (Yes, I know I could load multiple DNS entries, but I don't want to 
> have to wait for DNS timeout(s) if server(s) are offline.)
> 
> Thanks,
> 
> j
> 
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