The systemd exit code definitions (introduced in c586a17, refs #1324) caused
problems. Per default systemd considers a return code != 0 as failed. So when
you click on "Restart" in the WebUI an error appears:
systemd[953]: syncthing.service: main process exited, code=exited, status=3/NOTIMPLEMENTED
systemd[953]: Unit syncthing.service entered failed state.
systemd[953]: syncthing.service failed.
systemd[953]: syncthing.service holdoff time over, scheduling restart.
systemd[953]: Started Syncthing - Open Source Continuous File Synchronization.
systemd[953]: Starting Syncthing - Open Source Continuous File Synchronization...
syncthing[13222]: [LFKUK] INFO: syncthing v0.10.30 (go1.4.2 linux-amd64 default) builduser@jara 2015-03-29 07:46:44 UTC
To fix this error we have to add the "succes codes" 2, 3, 4 to
"SuccessExitStatus":
syncthing[13006]: [LFKUK] INFO: Restarting
syncthing[13006]: [LFKUK] OK: Exiting
systemd[953]: syncthing.service holdoff time over, scheduling restart.
systemd[953]: Started Syncthing - Open Source Continuous File Synchronization.
systemd[953]: Starting Syncthing - Open Source Continuous File Synchronization...
syncthing[13031]: [LFKUK] INFO: syncthing v0.10.30 (go1.4.2 linux-amd64 default) builduser@jara 2015-03-29 07:46:44 UTC
To make sure that syncthing restarts in case of error, and to make sure
that "Restart=on-failure" actually works, let's remove
"RestartPreventExitStatus=1". Systemd considers this as an error per
default and the restart will be triggered successfully.
Syncthing should not try to start a browser when invoked by systemd.
Furthermore we do not need any timestamps in the journal as systemd
already handles this for us.
- Removed environment file to keep the service file minimal.
"systemctl edit syncthing.service" does the job if somebody wants
to customize the service.
- Changed "cmdline.target" to "default.target" as "cmdline.target"
does not exist in systemd.special:
http://www.freedesktop.org/software/systemd/man/systemd.special.html
- Added a missing "After=network.target".
- Added a documentation hint, thx @jaystrictor
