Status vzlogger:
pi@raspberrypi:~ $ sudo systemctl status vzlogger
● vzlogger.service - vzlogger
   Loaded: loaded (/etc/systemd/system/vzlogger.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2020-11-04 10:31:58 CET; 9min ago
 Main PID: 670 (vzlogger)
    Tasks: 5 (limit: 4497)
   Memory: 5.2M
   CGroup: /system.slice/vzlogger.service
           └─670 /usr/local/bin/vzlogger -c /etc/vzlogger.conf

Nov 04 10:31:58 raspberrypi systemd[1]: Started vzlogger.