[users@httpd] mod_proxy_balancer config for HTTP header based sticky sessions

[G Quiggin <gj...@hotmail.com>]

Hello there,

I'm trying to write a mod_proxy_balancer config to implemented sticky sessions between multiple backend tomcat instances with stickyness provided by an HTTP header.

eg 1st incoming request is processed by app and responds by setting a custom HTTP header with a value set at randon. All subsequent requests are processed by the same back end server.

So I'm trying to figure out a mod_proxy_balancer config which would support this, or which in general would support sticky sessions via a custom header that the application has set to a value.

Need apache proxy rules to forward incoming requests accompanied by an HTTP header to be sticky to one instance of the tomcat cluster.

ProxyPass /test balancer://test_cluster/test-app stickysession=%{HTTP:X-Test-Header}

<Proxy balancer://test_cluster>
 BalancerMember http://giggle:8081 route= ???
 BalancerMember http://giggle:8082 route= ???
 BalancerMember http://giggle:8083 route= ???
 BalancerMember http://giggle:8084 route= ???
</Proxy>

I'm sure I also need to use Header add Set-Cookie and BALANCER_SESSION_STICK and route set correctly within the config and perhaps a rewrite rule.

Thanks, 
G J Quiggin

 		 	   		  

Re: [users@httpd] mod_proxy_balancer config for HTTP header based sticky sessions

[Jeroen Geilman <je...@adaptr.nl>]

On 2011-07-17 15:55, G Quiggin wrote:
> Hello there,
>
> I'm trying to write a mod_proxy_balancer config to implemented sticky 
> sessions between multiple backend tomcat instances with stickyness 
> provided by an HTTP header.
>
> eg 1st incoming request is processed by app and responds by setting a 
> custom HTTP header with a value set at randon. All subsequent requests 
> are processed by the same back end server.
>
> So I'm trying to figure out a mod_proxy_balancer config which would 
> support this, or which in general would support sticky sessions via a 
> custom header that the application has set to a value.
>
> Need apache proxy rules to forward incoming requests accompanied by an 
> HTTP header to be sticky to one instance of the tomcat cluster.
>
> ProxyPass /test balancer://test_cluster/test-app 
> stickysession=%{HTTP:X-Test-Header}
>
> <Proxy balancer://test_cluster>
>  BalancerMember http://giggle:8081 route= ???
>  BalancerMember http://giggle:8082 route= ???
>  BalancerMember http://giggle:8083 route= ???
>  BalancerMember http://giggle:8084 route= ???
> </Proxy>
>
> I'm sure I also need to use Header add Set-Cookie and 
> BALANCER_SESSION_STICK and route set correctly within the config and 
> perhaps a rewrite rule.
>


So... what exactly is your question ?

Which part of the mod_proxy_balancer documentation is unclear ?

> Thanks,
> G J Quiggin
>


-- 
J.