Installation Guide

8 Troubleshooting
8.1 The SDN Controller service (SDNC) failed to start
8.1.1 Problem description
The following SDN Controller Console login window does not appear after you attempt to start
the controller from a supported web browser:
Figure 8 SDN Controller Console
8.1.2 Solution
The controller service may not be running.
Execute the following command:
sudo service sdnc status
The above command should return the following output:
sudo sdnc start/running, process nnnn
where nnnn shows a process number.
If the above output does not appear, examine the following three log files for information on what
may have caused the failure:
• /var/log/sdn/virgo/stdout.log
• /var/log/sdn/virgo/stderr.log
• /var/log/sdn/virgo/logs/log.log
8.2 Port 35357 being used by non-Keystone processes
8.2.1 Problem description
If authentication fails at logon, the Keystone server may not be running and there may be a port
conflict.
8.2.2 Solution
Use the following command to verify whether the Keystone server is running:
sudo service keystone status
The above command should return the following output:
keystone start/running, process nnnn
where nnnn shows a process number.
8.1 The SDN Controller service (SDNC) failed to start 21