@Eric-Katzfey Thank you! I now use journalctl and write to a file in a logger service, for example:

voxl-mapper-logger.service

[Unit] Description=Logs voxl-mapper log output to file After=voxl-wait-for-fs.service network.target network-online.target Requires=voxl-wait-for-fs.service network.target network-online.target voxl-mapper.service [Service] Type=simple ExecStart=/bin/bash -c "sleep 45 && journalctl -f -u voxl-mapper.service >> /data/logs/voxl_mapper.log" StartLimitInterval=0 Restart=always RestartSec=2s [Install] WantedBy=multi-user.target