For failover, you could point "Redirection URL" to app on another computer in 
"Load Balancing and Adaptor Settings".


-----Original Message-----
From: webobjects-deploy-bounces+mstrumyla=accordant....@lists.apple.com 
[mailto:webobjects-deploy-bounces+mstrumyla=accordant....@lists.apple.com] On 
Behalf Of Pascal Robert
Sent: Wednesday, August 19, 2009 8:40 AM
To: T R T
Cc: [email protected]
Subject: Re: LB for webobject applications

Two options :

        - External autofailover/load balancing service. Let's say both servers 
are accessible from the outside world and are running Apache/ wotaskd. An 
external service like TZO's AutoFailOver (which we use) can do the load 
balancing and failover. In the case of AutoFailOver, the failover is done by 
changing the IP address of the site to only the running server. It will check a 
specific URL to determine if the server is up or down.

        - Gear like a Foundry switch. In this setup, the switch will simply 
replace the external service. I used Foundry switches in the past, but it was 
for load balancining SMTP and POP3 servers, never tried them in a HTTP context.

> Hello,
>
> How could I achieve load balance and failover of an application 
> between two servers each has its own ip-address?  The offcial document 
> is not sufficient and not covering such configuration across many 
> machines. Are there any detailed documents or information about that. 
> I really appreciate any help.
>
> Tony
>


-------------------------------------------------------
Pascal Robert

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