[LON-CAPA-admin] course is empty

[Bob Gonzales]

Since the upgrade to 2.9 and Centos 5.5 I've had a several students log in,
click on their course and get a message stating the course is empty in place
of the normal list of resources.  Logging out and back in doesn't fix the
problem.  Logging into another access server does work correctly.   Logging
into the server that the problem occurred on at a later time produces the
normal page of resources.

I looked in the logs and found the following from around the same time that
the student was getting the empty page.  I don't know if it is related or
not.  I included some other login info for the user before and after the
problem time, 13:50. 

lonnet.log.1:Thu Jul 29 08:41:17 2010 (21502): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 11:21:24 2010 (21502): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 13:50:54 2010 (21504): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 13:51:10 2010 (21506): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 13:52:12 2010 (21507):
binghamton:oarowol1:binghamtonl1:Denied by role: plc for
binghamton_282095851d1174c68binghamtonl1/51 as st in
binghamton_282095851d1174c68binghamtonl1
lonnet.log.1:Thu Jul 29 13:52:41 2010 (21509): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 13:52:45 2010 (22599): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 13:52:57 2010 (21506): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 13:53:34 2010 (22599): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 13:53:48 2010 (21507):
binghamton:oarowol1:binghamtonl1:Denied by role: plc for
binghamton_282095851d1174c68binghamtonl1/51 as st in
binghamton_282095851d1174c68binghamtonl1
lonnet.log.1:Thu Jul 29 13:53:52 2010 (21506): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 13:54:07 2010 (21504):
binghamton:oarowol1:binghamtonl1:Denied by role: plc for
binghamton_282095851d1174c68binghamtonl1/51 as st in
binghamton_282095851d1174c68binghamtonl1
lonnet.log.1:Thu Jul 29 13:56:11 2010 (22599): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 13:56:14 2010 (21504): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 13:56:47 2010 (21503): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 13:57:06 2010 (21504):
binghamton:oarowol1:binghamtonl1:Denied by role: plc for
binghamton_282095851d1174c68binghamtonl1/51 as st in
binghamton_282095851d1174c68binghamtonl1
lonnet.log.1:Thu Jul 29 13:57:46 2010 (21503):
binghamton:oarowol1:binghamtonl1:Denied by role: plc for
binghamton_282095851d1174c68binghamtonl1/51 as st in
binghamton_282095851d1174c68binghamtonl1
lonnet.log.1:Thu Jul 29 14:02:30 2010 (21509): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 14:02:34 2010 (21503): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 14:06:40 2010 (22599): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 14:06:43 2010 (21504): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 17:55:46 2010 (21505): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 17:55:48 2010 (21506): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log.1:Thu Jul 29 17:56:13 2010 (21508): User oarowol1 at binghamton
authorized by binghamtonl1
lonnet.log.1:Thu Jul 29 17:56:23 2010 (21505): <font color="blue">WARNING:
Could not tie coursemap
/home/httpd/perl/tmp/oarowol1_binghamton_282095851d1174c68binghamtonl1 for
/uploaded/binghamton/282095851d1174c68binghamtonl1/default.sequence.</font>
lonnet.log:Fri Jul 30 08:33:50 2010 (26998): User oarowol1 at binghamton
rejected by binghamtonl1
lonnet.log:Fri Jul 30 08:34:15 2010 (26993): User oarowol1 at binghamton
authorized by binghamtonl1

Around the 13:50 time, we have about 28 students trying to log in.  They
aren't all logging in at exactly the same time but within about 5-10 minutes
of each other.  

The machine is an access server and is a quad-core intel machine with 8GB of
memory.  It was upgraded to LONCAPA 2.9 and Centos 5.5 about a month ago.

Any thoughts on why the 'course is empty' situation?

Thanks,

Bob Gonzales
Binghamton University
Chemistry Dept
4400 Vestal Parkway East
Binghamton, NY  13902
(607)777-2698
rgonzal at binghamton.edu