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From "Vaneet Sharma" <>
Subject RE: Authentication problems with tomcat clustering.
Date Mon, 04 Apr 2005 16:08:46 GMT
Your Apache and Tomcat configuration is exactly like me..
However today I installed connector mod_jk.. Connector 1.2.10...

And ... Though apache and tomcat are talking .. I cannot run my servlet
Pls have a look below to see the configuration

The connector is not loading my servlets?
I am writing down my httpd.conf and

LoadModule jk_module modules/

<ifModule mod_jk.c>
JkWorkersFile /usr/local/jakarta-tomcat-5.5.4/conf/
JkLogFile /etc/httpd/logs/mod_jk.log
JkLogLevel info
JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories
JkLogStampFormat "[%a %b %d %H:%M:%S %Y]" JkAutoAlias
JkShmFile /etc/httpd/logs/mod_jk.shm 
JkMount /servlet/* ajp13Worker
JkMount /*.vm ajp13Worker
JkMount /therestaurant/servlet/ControllerServlet/* ajp13Worker


    DocumentRoot /usr/local/jakarta-tomcat-x.x.x/webapps/therestaurant

And below is file worker.ajp13Worker.port=8009
worker.ajp13Worker.cachesize=10 worker.ajp13Worker.cache_timeout=600

-----Original Message-----
From: David Owens [] 
Sent: Monday, April 04, 2005 6:04 PM
Subject: Authentication problems with tomcat clustering.

I have setup load balancing and clustering between two Tomcat 5.5.7
instances and Apache 2.0.50 with mod_jk.  Almost everything works great.
I can fail back and forth between the 2 tomcat instances with no
trouble.  However, I am having problems with the form based
authentication.  I have an index.html file which redirects the user to a
secured resource.  When the user hits this file through Apache, it works
like normal, directing them to the login page.  However, when I attempt
to login I get "Invalid direct reference to form login page".  When I
look in the logs, I see the user is being authenticated, and the correct
roles are being found. If I continually try logging in, and hitting the
secure page, eventually I get in.  Then, if I bounce apache, the problem
starts again. If I login in the exact same manner directly against one
of the tomcat instances, everything works, and I continue to the secure
resource.  In addition, I have found that if I stop one tomcat instance,
I can login on the first try even when going through apache.  


It's worth noting, once I get successfully logged in once through apache
(after many tries), I can logout/in repeatedly with no problem.  Once I
bounce apache,

the problem starts again.


I think something strange is happening with the login stuff when tomcat
is clustered...  Maybe I'm logging into 1 tomcat successfully, but being
load balanced over

to the other one, and the session has not been completely replicated


Any one else out there have this issue, or have any ideas?


Thanks in advance!



Vaneet Sharma
executive manager	
iDeasTank Limited	
an iwg business
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valletta, m-malta/europe
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