root@controller:~# service nova-novncproxy restart
root@controller:~# service nova-novncproxy status
● nova-novncproxy.service - OpenStack Compute novncproxy
    Loaded: loaded (/lib/systemd/system/nova-novncproxy.service; enabled; vendor 
preset: enabled)
    Active: active (running) since Tue 2016-05-31 18:44:41 KST; 4s ago
   Process: 11648 ExecStartPre=/bin/chown nova:nova /var/lock/nova /var/log/nova 
/var/lib/nova (code=exited, status=0/SUCCESS)
   Process: 11643 ExecStartPre=/bin/mkdir -p /var/lock/nova /var/log/nova /var/
lib/nova (code=exited, status=0/SUCCESS)
  Main PID: 11652 (nova-novncproxy)
     Tasks: 1
    Memory: 93.0M
       CPU: 1.014s
    CGroup: /system.slice/nova-novncproxy.service
            └─11652 /usr/bin/python /usr/bin/nova-novncproxy --config-file=/etc/
nova/nova.conf --log-file=/var/log/nova/nova-novncproxy.log

May 31 18:44:41 controller systemd[1]: Started OpenStack Compute novncproxy.
May 31 18:44:41 controller nova-novncproxy[11652]: Option "logdir" from group 
"DEFAULT" is deprecated. Use option "log-dir" from group "DEFAULT".
May 31 18:44:41 controller nova-novncproxy[11652]: Option "verbose" from group 
"DEFAULT" is deprecated for removal.  Its value may be silently ignored in the 
future.
May 31 18:44:42 controller nova-novncproxy[11652]: 2016-05-31 18:44:42.278 11652 
WARNING oslo_reports.guru_meditation_report [-] Guru mediation now registers 
SIGUSR1 and SIGU
May 31 18:44:42 controller nova-novncproxy[11652]: 2016-05-31 18:44:42.279 11652 
INFO nova.console.websocketproxy [-] WebSocket server settings:
May 31 18:44:42 controller nova-novncproxy[11652]: 2016-05-31 18:44:42.279 11652 
INFO nova.console.websocketproxy [-]   - Listen on 0.0.0.0:6080
May 31 18:44:42 controller nova-novncproxy[11652]: 2016-05-31 18:44:42.280 11652 
INFO nova.console.websocketproxy [-]   - Flash security policy server
May 31 18:44:42 controller nova-novncproxy[11652]: 2016-05-31 18:44:42.280 11652 
INFO nova.console.websocketproxy [-]   - Web server (no directory listings). Web 
root: /usr/s
May 31 18:44:42 controller nova-novncproxy[11652]: 2016-05-31 18:44:42.281 11652 
INFO nova.console.websocketproxy [-]   - No SSL/TLS support (no cert file)
May 31 18:44:42 controller nova-novncproxy[11652]: 2016-05-31 18:44:42.282 11652 
INFO nova.console.websocketproxy [-]   - proxying from 0.0.0.0:6080 to None:None