I rebooted my server and ran into these error messages when trying to start plexmediaserver:
root@*****:/lib/systemd/system# systemctl status plexmediaserver.service
● plexmediaserver.service - Plex Media Server for Linux
Loaded: loaded (/lib/systemd/system/plexmediaserver.service; enabled)
Active: failed (Result: start-limit) since Tue 2017-01-10 12:59:21 CET; 2min 4s ago
Process: 18655 ExecStart=/bin/sh -c LD_LIBRARY_PATH=/usr/lib/plexmediaserver /usr/lib/plexmediaserver/Plex\ Media\ Server (code=exited, status=134)
Process: 18651 ExecStartPre=/bin/sh -c /usr/bin/test -d "${PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR}" /bin/mkdir -p "${PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR}" (code=exited, status=0/SUCCESS)
Main PID: 18655 (code=exited, status=134)
Jan 10 12:59:16 Rufus systemd[1]: Unit plexmediaserver.service entered failed state.
Jan 10 12:59:21 Rufus systemd[1]: plexmediaserver.service holdoff time over, scheduling restart.
Jan 10 12:59:21 Rufus systemd[1]: Stopping Plex Media Server for Linux...
Jan 10 12:59:21 Rufus systemd[1]: Starting Plex Media Server for Linux...
Jan 10 12:59:21 Rufus systemd[1]: plexmediaserver.service start request repeated too quickly, refusing to start.
Jan 10 12:59:21 Rufus systemd[1]: Failed to start Plex Media Server for Linux.
Jan 10 12:59:21 Rufus systemd[1]: Unit plexmediaserver.service entered failed state.
Jan 10 12:59:33 Rufus systemd[1]: Starting Plex Media Server for Linux...
Jan 10 12:59:33 Rufus systemd[1]: plexmediaserver.service start request repeated too quickly, refusing to start.
Jan 10 12:59:33 Rufus systemd[1]: Failed to start Plex Media Server for Linux.
I noticed that Docker didn't work properly after the reboot, which made me realize that Plex didn't work either. I tried re-installing the plugins, but no success...