Known issues if the UI won't launch:
A: Checking that the Tomcat, Postgres, and Apache services are running:
To determine if these services are running you will need to use SSH to login to Director. Director is based on the popular open source operating system Linux and consequently runs most Linux commands. One such command that allows you to check a status on a demon is the command "ps - aux." Running this command, you should see an output, simliar to those below, if the three services are running properly. If you don't see them in the list, they are not running.
To login, using SSH, follow these steps.
Open a SSH session to to the Director box. .
The below screenshot shows what the output would looklike for the Postgres, and Apache daemons.
To narrow down your searches, use this syntax.
The bellow screenshot is the output from a "ps aux" command looking for the Tomcat daemon.
Finding the process IDs.
Often, to check on the status of a daemon in Linux, you need to find the process ID. To find a process ID you use the pgrep command. For more information on the pgrep command, see pgrep.
Verifying disk space:
An output, simliar to the one below, should show used/available disk space.
B: Flow chart for how Tomcat interacts with the java client/browser:
C: Check that the DNS daemon is running.