Directing log outputs of several units to a specific file

[amrbekhit]

Hello,

I've got an embedded system (custom hardware with ARMv5 CPU) running Arch (using the MultiPlatform download). To minimise writes to the on board SD card, I've mounted the rootfs as read only and some of the temporary directories (such as /tmp) as tmpfs. As such, system journal is written to the ram disc and is discarded on reboot.

However, I have a need to log the output of some systemd units (my own programs) to a file at a particular location. Is there a way to direct the log output of a set of units to a particular file somewhere?

Thanks

Amr

[moonman]

You can redirect all output from journal to syslog-ng. Install syslog-ng and edit journal.conf (or is it journalctl.conf - can't remember). It is all in archwiki.