How to reboot vCloud Director
Login into vCloud Director via ssh.
[root@vcloud-dtech]# service vmware-vcd status
[root@vcloud-dtech]# service vmware-vcd stop
[root@vcloud-dtech]# service vmware-vcd start
To check logs
tail -f /opt/vmware/vcloud-director/logs/cell.log
If this is not working then reboot the VM.