You can at least tell us what OS are these servers running on? Also you said when you put second apache something is not working so we would like to see your apache config if you dont mind. Another thing not clear to me is tomcat session replication. Are the tomcats clustered? If not how do they replicate the sessions between each other? In meantime check mod_proxy_balancer documentation as possible solution. You can find lots of examples with sticky sessions configuration fot this module for tomcat backends. On Mar 12, 2012 6:19 PM, "Kashif Rahman" <kashif.rah...@vopium.com> wrote:
> Thanks Anam, but we are looking at to use mod proxy for Apache/Tomcat > Communication and session persistence. Can it be done using our requirement? > **** > > ** ** > > Thank you,**** > > ** ** > > Regards,**** > > Kashif Rahman.**** > > ** ** > > *From:* Anam Ali Khan [mailto:anamalik...@yahoo.com] > *Sent:* Friday, March 09, 2012 7:44 PM > *To:* users@httpd.apache.org > *Cc:* Kashif Rahman > *Subject:* Re: [users@httpd] Apache + Tomcat Load Balancing**** > > ** ** > > Hi,**** > > ** ** > > I would recommend *HAProxy* as a load balancer in your PHP + JSP > application environment. It will work as follows:**** > > ** ** > > 1. First HAProxy will accept client request.**** > > 2. It will forward those requests to two machines via round robin **** > > 3. Each WebServer must use *mod_jk* as a connector (module) for > Apache/Tomcat communication and session persistence.**** > > 4. HAproxy also perform health checking for two servers.**** > > ** ** > > -Anam**** > > ** ** > ------------------------------ > > *From:* Kashif Rahman <kashif.rah...@vopium.com> > *To:* users@httpd.apache.org > *Sent:* Friday, 9 March 2012, 11:36 > *Subject:* [users@httpd] Apache + Tomcat Load Balancing**** > > ** ** > > Hi,**** > > **** > > We have requirement for to load balance our PHP + JSP application. I need > to know that how can I load balance 2 Apache web Servers and 2 Tomcat > Servers, 1st Web Server + Tomcat on 1st machine and 2nd Web Server + > Tomcat on 2nd machine. We want to use Proxy Load Balancer for Apache to > tomcat communication.**** > > If we use single Apache Web Server and 2 tomcat instances on different > machines, it seems to be working and sharing session fine, but when we add 2 > nd apache web server to have fail over for PHP too, tomcat stops > replicating session? If anyone is running such type of setup then kindly do > let me know what could be the issues or anything missing. I am using Apache > WebServer as a load balancer for both Apache too.**** > > **** > > > Apache Webserver**** > > > |**** > > > |**** > > > _____ |______**** > > > | |**** > > > Apache Webserver Apache Webserver**** > > > | |**** > > > Tomcat Tomcat **** > > **** > > What could be the recommended solution for this requirement?**** > > **** > > Thank you,**** > > **** > > Best Regards,**** > > ** ** > > Kashif Rahman**** > > ** ** >
