root@controller:~# service ceilometer-agent-central restart
root@controller:~# service ceilometer-agent-central status
● ceilometer-agent-central.service - Ceilometer Agent Central
    Loaded: loaded (/lib/systemd/system/ceilometer-agent-central.service;
enabled; vendor preset: enabled)
    Active: active (running) since Tue 2016-06-28 17:07:59 KST; 4s ago
   Process: 26114 ExecStartPre=/bin/chown ceilometer:ceilometer /var/lock/
ceilometer /var/log/ceilometer /var/lib/ceilometer (code=exited, status=0/
SUCCESS)
   Process: 26111 ExecStartPre=/bin/mkdir -p /var/lock/ceilometer /var/log/
ceilometer /var/lib/ceilometer (code=exited, status=0/SUCCESS)
  Main PID: 26117 (ceilometer-poll)
     Tasks: 1
    Memory: 73.0M
       CPU: 1.109s
    CGroup: /system.slice/ceilometer-agent-central.service
            └─26117 /usr/bin/python /usr/bin/ceilometer-polling –config-file=/
etc/ceilometer/ceilometer.conf –polling-namespaces central –log-file=/var/log/
ceilometer/ceilometer-agent-central.log