pi@raspberrypi:~ $ sudo systemctl --no-pager status unifi
â unifi.service - unifi
   Loaded: loaded (/lib/systemd/system/unifi.service; enabled; vendor preset: enabled)
   Active: active (running) since Fri 2019-02-15 19:40:01 CET; 35s ago
  Process: 802 ExecStart=/usr/lib/unifi/bin/unifi.init start (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/unifi.service
           ââ437 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-oracle -cp /usr/share/java/commons-daemon.jar:/usr/lib/unifi/lib/ace.jar -pidfile /vaâ¦rt
           ââ438 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-oracle -cp /usr/share/java/commons-daemon.jar:/usr/lib/unifi/lib/ace.jar -pidfile /vaâ¦rt
           ââ439 unifi -cwd /usr/lib/unifi -home /usr/lib/jvm/java-8-oracle -cp /usr/share/java/commons-daemon.jar:/usr/lib/unifi/lib/ace.jar -pidfile /vaâ¦rt
           ââ594 /usr/lib/jvm/java-8-oracle/jre/bin/java -Dfile.encoding=UTF-8 -Djava.awt.headless=true -Dapple.awt.UIElement=true -Xmx1024M -XX:+ExitOnOuâ¦rt

feb 15 19:40:01 raspberrypi systemd[1]: Starting unifi...
feb 15 19:40:01 raspberrypi unifi.init[802]: Starting Ubiquiti UniFi Controller: unifi (already running) failed!
feb 15 19:40:01 raspberrypi systemd[1]: Started unifi.
feb 15 19:40:35 raspberrypi unifi.init[365]: Starting Ubiquiti UniFi Controller: unifi