|
On Tue, 28 Dec 2004, Richard Human wrote:
> Hi all
>
> I am currently evaluating a load-balancing solution for my platform and
> LVS is one of the main contenders. However, I have one requirement that
> I'm not sure if LVS will meet. I've been trawling through the
> documentation and archives, but can't seem to find the answer.
>
> So I need to load-balance a set of tomcat application servers running a
> stateful web application. This means that I need to direct HTTP
> connections for the same session to the same box. The persistent
> connection feature of LVS should handle this.
>
> However, I have a requirement that I need to be able to put a real
> server into a state such that the director does not forward new
> "sessions" to the box but does continue to forward *existing* sessions
> to the box. The reason for this is that if we need to perform
> maintenance on a real server we need to be able to "drain" the sessions
> off it and, once all users have logged off that box, we can shutdown the
> tomcat application server.
you might consider using tomcat5 session replication, then you don't need
continue to forward *existing* sessions since they exist on the other
tomcat instances. Then the apache+mod_jk and session replication setup
is enought for your needs.
>
> (For those of you interested in these things, apache+mod_jk was our
> first choice but does not work well enough, and also it is not possible
> to make the application clusterable over multiple tomcat backends
> without a substantial reworking of the codebase).
>
> Does LVS have this capability? (Or am I just missing something in the docs?)
>
> Thanks for your time
> Cheers
> Richard
> _______________________________________________
> LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
> Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> or go to http://www.in-addr.de/mailman/listinfo/lvs-users
>
|
