RE: Clustering / Load Balancer / Session Cookie

["Dale, Matt" <Ma...@beCogent.com>]

Just a quick post to say thanks, we went live using pen and 3 clustered instances of 5.0.25 today and its working a treat. Load is spread almost perfectly. The only feature I would have as a "nice to have" would be to apply wieghtings to the target hosts but other than that spot on and no problems whatsoever so far.

Ta
Matt

-----Original Message-----
From: Filip Hanik - Dev [mailto:devlists@hanik.com]
Sent: 29 April 2004 15:47
To: Tomcat Users List
Subject: Re: Clustering / Load Balancer / Session Cookie


http://siag.nu/pen
http://balance.sourceforge.net

pen is my favorite, performs best and works on both windows and unix

Filip
----- Original Message -----
From: "Dale, Matt" <Ma...@beCogent.com>
To: "Tomcat Users List" <to...@jakarta.apache.org>
Sent: Thursday, April 29, 2004 8:51 AM
Subject: RE: Clustering / Load Balancer / Session Cookie


Thanks for the quick reply.

So the supplied tomcat load balancer isnt of any use for stateful sessions where the cluster is spread accross several machines?

-----Original Message-----
From: Peter Lin [mailto:tcw00lfel@yahoo.com]
Sent: 29 April 2004 14:44
To: Tomcat Users List
Subject: Re: Clustering / Load Balancer / Session Cookie



to paraphrase, you want to have it look like the same machine to the browser (ie user).

the easiest way is to use a hardware load balancer. I've use this approach a couple times in the past and it works well.

peter lin



"Dale, Matt" <Ma...@beCogent.com> wrote:

Hi,

I'm currently testing a setup up on 3 machines.

2 have tomcat 5.0.19, these 2 are clustered with session replication and have a simple test app.

The other, also 5.0.19, runs the supplied balancer app.

I've written a simple round robin rule which passes the requests back and forth as it should, I can see the sessions being
replicated fine in the logs so all is ok there.

BUT my problem is accessing the same session on both machines. Basically I'm stumped, I know its not accessing the same session
because the redirected URL is different but how can I get around this?

I've tried a using an HTML frame on the balancer machine but that was clutching at straws and obviously didnt work.

Any ideas would be appreciated.

Ta
Matt

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