Yes sorry! Slow morning here today.. :)

From: M.H.G. Emmerig [mailto:m.h.g.emme...@dnb.nl]
Sent: 30 June 2010 11:33
To: Tomcat Users List
Subject: RE: Hello and Tomcat issues with sticky sessions


you beat me to it I think

regards

Milko Emmerig

"Ockleford Paul (NHS Connecting for Health)" <paul.ocklef...@nhs.net>

30-06-2010 12:31
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RE: Hello and Tomcat issues with sticky sessions








I'm not sure if this is what you are looking for but I just checked how our 
stuff is set up here and wondered if you have the jvm route mapped in the 
server xml for the tomcat instances you want loadbalanced?

<Engine jvmRoute="route_7" name="Catalina" defaultHost="localhost">

Paul



-----Original Message-----
From: Gabriel Tabares [mailto:gabriel.taba...@roboreus.com]
Sent: 30 June 2010 11:17
To: users@tomcat.apache.org
Subject: Hello and Tomcat issues with sticky sessions

Hi everybody,

I have been running Tomcat on production for a few years with no problem
but now, after moving to a new company, I am completely unable to get
session stickyness working.

The setup is as follows:

Apache 2.2.3 (CentOS 5.4 version) -> Tomcat 6.0.24.

I have tried all of mod_proxy, mod_ajp_proxy and mod_jk but, no matter
what I do, I can not get Apache to always send the requests to the
Tomcat specified in the jsession.

Firebug indicates that the JSESSIONID cookie is being set as it should
but it still sees requests going to the other server. I have also tried
changing the jvmRoute to exactly match the worker name for mod_jk but it
still doesn't work.

I would appreciate any help, as I am stuck.

Here are the configurations I have tried. Obviously, only of them is
active at any given time. httpd.conf is the standard one from the CentOS
RPM.

Tomcats:

All of them have a jvmRoute of pub-app0X, where X goes from 1 to 5.

mod_proxy
========
proxy.conf
-----------

LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_http_module modules/mod_proxy_http.so

ProxyRequests Off

<Proxy balancer://public_web_cluster>
    Order deny,allow
    Allow from all

    BalancerMember http://app01:8080 route=pub-app01
    BalancerMember http://app02:8080 route=pub-app02
    BalancerMember http://app03:8080 route=pub-app03
    BalancerMember http://app04:8080 route=pub-app04
    BalancerMember http://app05:8080 route=pub-app05
</Proxy>

virtual.conf
------------
LogLevel Debug

<VirtualHost 10.1.2.1:80>
    DocumentRoot /var/www/html
    ServerName www.myserver.com
    ServerAlias myserver.com

        RewriteEngine On
        RewriteRule ^/$ /appname/ [R]
        RewriteRule ^$ /appname/ [R]

<Location />
        AuthType Basic
        AuthName "Please enter your details"
        AuthUserFile /etc/httpd/conf.d/htpasswd
        Require valid-user

        ProxyPass balancer://public_web_cluster/
stickysession=JSESSIONID lbmethod=byrequests
        ProxyPassReverse balancer://public_web_cluster/
</Location>
</VirtualHost>

mod_ajp_proxy
===========

mod_proxy_ajp.conf
----------------------

LoadModule proxy_ajp_module modules/mod_proxy_ajp.so

<Proxy balancer://pubLB>
BalancerMember ajp://app01:8009/ timeout=5 route=pub-app01
BalancerMember ajp://app02:8009/ timeout=5 route=pub-app02
BalancerMember ajp://app03:8009/ timeout=5 route=pub-app03
BalancerMember ajp://app04:8009/ timeout=5 route=pub-app04
BalancerMember ajp://app05:8009/ timeout=5 route=pub-app05
</Proxy>

virtual.conf
-----------
ProxyRequests Off
<VirtualHost 10.1.2.1:80>
    DocumentRoot /var/www/html
    ServerName www.myserver.com
    ServerAlias myserver.com

        RewriteEngine On
        RewriteRule ^$ /myapp [R]
        RewriteRule ^/$ /myapp [R]

<Location />
        AuthType Basic
        AuthName "Please enter your details"
        AuthUserFile /etc/httpd/conf.d/htpasswd
        Require valid-user

        ProxyPass balancer://pubLB/ stickysession=JSESSIONID nofailover=on
        ProxyPassReverse balancer://pubLB/
</Location>
</VirtualHost>

mod_jk
=====

mod_jk.conf
-------------
LoadModule jk_module modules/mod_jk.so

JkWorkersFile /etc/httpd/conf.d/workers.properties
JkLogFile     /var/log/httpd/mod_jk.log
JkLogLevel    debug
JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "

workers.properties
-------------------
ps=/

worker.list=pub-app01, pub-app02, pub-app03, pub-app04, pub-app05, pub-lb

worker.pub-app01.type=ajp13
worker.pub-app01.host=app01
worker.pub-app01.port=8009
worker.pub-app01.socket_keepalive=1

worker.pub-app02.type=ajp13
worker.pub-app02.host=app02
worker.pub-app02.port=8009
worker.pub-app02.socket_keepalive=1

worker.pub-app03.type=ajp13
worker.pub-app03.host=app03
worker.pub-app03.port=8009
worker.pub-app03.socket_keepalive=1

worker.pub-app04.type=ajp13
worker.pub-app04.host=app04
worker.pub-app04.port=8009
worker.pub-app04.socket_keepalive=1

worker.pub-app05.type=ajp13
worker.pub-app05.host=app05
worker.pub-app05.port=8009
worker.pub-app05.socket_keepalive=1

worker.ajp13.lbfactor=1

worker.pub-lb.type=lb
worker.pub-lb.balance_workers=pub-app01,pub-app02,pub-app03,pub-app04,pub-app05
worker.pub-lb.sticky_session=1

virtual.conf
-----------

<VirtualHost 10.1.2.1:80>
    DocumentRoot /var/www/html
    ServerName www.myserver.com

   JkMount /myapp/* pub-lb

<Location />
        AuthType Basic
        AuthName "Please enter your details"
        AuthUserFile /etc/httpd/conf.d/htpasswd
        Require valid-user

</Location>
</VirtualHost>

------------------------------

Thanks in advance.

Gabriel




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