root@controller:~# service ceilometer-collector restart
root@controller:~# service ceilometer-collector status
● ceilometer-collector.service - Ceilometer Collector
     Loaded: loaded (/lib/systemd/system/ceilometer-collector.service; enabled;
vendor preset: enabled)
     Active: active (running) since Tue 2016-06-28 17:09:01 KST; 5s ago
    Process: 26249 ExecStartPre=/bin/chown ceilometer:ceilometer /var/lock/
ceilometer /var/log/ceilometer /var/lib/ceilometer (code=exited, status=0/
SUCCESS)
    Process: 26245 ExecStartPre=/bin/mkdir -p /var/lock/ceilometer /var/log/
ceilometer /var/lib/ceilometer (code=exited, status=0/SUCCESS)
   Main PID: 26253 (ceilometer-coll)
      Tasks: 8
     Memory: 75.7M
        CPU: 1.150s
     CGroup: /system.slice/ceilometer-collector.service
             └─26253 /usr/bin/python /usr/bin/ceilometer-collector –config-
file=/etc/ceilometer/ceilometer.conf –log-file=/var/log/ceilometer/ceilometer-
collector.log