>So now I wondering if its still pertains to the F5 not properly allowing the 
>traffic back to the application.

Anything in the firewall logs? Or/and set F5 to verbose logging?
_______________________________
From: Juan Quintanilla [jquin...@fiu.edu]
Sent: Friday, July 10, 2015 09:29
To: cas-user@lists.jasig.org
Cc: Joseph Wong
Subject: Re: [cas-user] CAS SSO User stuck on Login Page

Hi,

I will be changing the logging for the tomcat access logs so that I can see a 
little more details.  Regarding the ldap logs we checked and it seems that 
during the time when the user is having this issue on the CAS login page there 
is no entries in our Ldap logs for an authentication attempt.  So it seems that 
I would probably not find a post in the access logs. The only entry that I 
found for this particular user was after they closed their browser and tried 
logging in again which did generate an error on the login page for invalid 
credentials and once the correct credentials were entered they were able to 
access the page.

So the next check is to see if there is a post being made in the access logs 
for tomcat. Would there not being enough ldap connections in the pool display 
an error in the cas.log? Or what could cause the page to go dead between tomcat 
and CAS.  So now I wondering if its still pertains to the F5 not properly 
allowing the traffic back to the application. We are removing one of the 
webservers from the loop so that traffic can go to one server but any other 
tips or suggestions would be greatly appreciated.

___________________
Juan Quintanilla
UTS - Enterprise Group
305-348-6573
jquin...@fiu.edu
________________________________________
From: Waldbieser, Carl <waldb...@lafayette.edu>
Sent: Friday, July 10, 2015 11:38 AM
To: cas-user@lists.jasig.org
Cc: Joseph Wong
Subject: Re: [cas-user] CAS SSO User stuck on Login Page

If you crank up the log levels on Tomcat, you should see an HTTP POST in the 
access logs.
That would indicate the credentials are delivered successfully to the CAS 
application.

Do you see any evidence in your LDAP logs that an LDAP connection was dropped 
mid-stream?

Thanks,
Carl Waldbieser
Lafayette College

----- Original Message -----
From: "Juan Quintanilla" <jquin...@fiu.edu>
To: cas-user@lists.jasig.org
Cc: "Joseph Wong" <jos...@fiu.edu>
Sent: Friday, July 10, 2015 10:54:22 AM
Subject: [cas-user] CAS SSO User stuck on Login Page

Hi,



I reached out the list earlier in the week regarding some issues we were having 
with some users remaining on the CAS Login page after being redirected by the 
client application.  The user when they enter good credentials are presented 
with the login page again, if they enter bad credentials no error message is 
displayed on the login page.  The transaction is not even recorded on the 
catalina.out, or the cas.log.



The environment is running CAS 3.6.0 on tomcat 8 with ldap backend for 
authentication and Oracle Db for ticketing and the web servers are being load 
balanced on an F5.  The issue is sporadic so its not consistent but once the 
user closes their browser and tries to login again they can access the 
application.  My question, if a connection cannot be pulled from the ldap 
connection pool would an error be thrown?  Our guess is that when the user hits 
the login page and enters their credentials the connection from the CAS web 
server on the F5 to the Ldap vip address which is on a different load balancer 
is being dropped or reset.



What debugging on CAS could I enable to see whether that communication login 
info is even being received on the CAS application, or if the CAS application 
is seeing when the user enters the information on the login page.


___________________
Juan Quintanilla
UTS - Enterprise Group
305-348-6573
jquin...@fiu.edu<mailto:jquin...@fiu.edu>

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