Troubleshooting: Images Do Not Display

Occasionally, images may not display correct. The images are retrieved from the readonly port (5556 by default) of the licmon server via HTTP. If your images are not displaying, try the following steps:

  1. Check that readonly port is enabled.
  2. Check the DNS/NIS setup and /etc/nsswitch.conf to be sure that the licmon hostname resolves.
  3. Set the environment variable VOV_HOST_NAME in licmon.swd/setup.tcl to a value that resolves to the Monitor server machine.
  4. If an IP address is the only way to access the machine from other hosts, add VOV_HOST_HTTP_NAME with the desired IP address to the setup.tcl file and perform a reread.
  5. To make the change effective immediately, also enter the following commands at the shell. This sets the environment variable in the running vovserver.
    % vovproject enable licmon
    % vovsh -x "vtk_server_setenv VOV_HOST_HTTP_NAME <VALUE>
If you are viewing Monitor over a port-forwarded tunnel through ssh, for example, -L 5555:jaguar:5555, the host names differ on each end of the connection. The only way to deal with this is to make the Monitor host an alternate name for 'localhost'. For the above example, where the remote host is 'jaguar', your line in the hosts file would be similar to:
127.0.0.1 localhost jaguar