mod rewrite, reverse proxy and load balancing

[Paddy Verberne <pa...@home.nl>]

Hi,

Does anyone have the answer to the following?

Proposed configuration:
1 (one) apache-server connected to the internet with mod_rewrite to be able to provide reverse proxy to 2 (two) or more intranet webservers.

Question:
Can I be sure that once a client has connected through the apache-server to an internal webserver, all requests from that client will be redirected to that same server for the duration of the session?

What I think:
As long as I don't use session-based cookies or another mechanism to ensure that the apache-server knows what server to pick for a particular client for the duration of a session, it will redirect randomly to the available intranet webservers.

Any thoughts you want to share with me?

B.T.W. I've used mod_rewrite before to perform a similar trick using 1 (one) intranet webserver.

Best regards.

Paddy Verberne

Re: mod rewrite, reverse proxy and load balancing

[Matt Schillinger <ms...@vss.fsi.com>]

I am looking to do the exact same thing.. If you have the same web data,
then use a database for session management, then you will be able to use
both webservers, and load balance randomly.. However, In my configuration,
I am using RewriteMap, and it works to pull a server, but the rnd://
option, always pulls the first instance in the server list.

Matt Schillinger
System Administrator
Flight Safety International - Visual Simulation Systems
mschilli@vss.fsi.com
314-551-8403

On Thu, 28 Feb 2002, Paddy Verberne wrote:

> Hi,
>  
> Does anyone have the answer to the following?
>  
> Proposed configuration:
> 1 (one) apache-server connected to the internet with mod_rewrite to be
> able to provide reverse proxy to 2 (two) or more intranet webservers.
>  
> Question:
> Can I be sure that once a client has connected through the apache-server
> to an internal webserver, all requests from that client will be
> redirected to that same server for the duration of the session?
>  
> What I think:
> As long as I don't use session-based cookies or another mechanism to
> ensure that the apache-server knows what server to pick for a particular
> client for the duration of a session, it will redirect randomly to the
> available intranet webservers.
>  
> Any thoughts you want to share with me?
>  
> B.T.W. I've used mod_rewrite before to perform a similar trick using 1
> (one) intranet webserver.
>  
> Best regards.
>  
> Paddy Verberne
> 


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