OracleVM Serial Console Not Working - serial_console (serial_console) main process ended, respawning - Part 2

Back in 2015 I wrote an article that explained the workaround to the serial console problem (continuous errors in /var/log/messages) and serial console not working.

http://kaukovuo.blogspot.com/2015/12/oraclevm-serial-console-not-working.html

The issue resurfaced at some point and I continued having Linux servers that printed continuous error messages  like this:

Dec 18 20:33:49 lb01 init: serial_console (serial_console) main process (30384) terminated with status 1
Dec 18 20:33:49 lb01 init: serial_console (serial_console) main process ended, respawning
Dec 18 20:33:59 lb01 init: serial_console (serial_console) main process (30399) terminated with status 1
Dec 18 20:33:59 lb01 init: serial_console (serial_console) main process ended, respawning
Dec 18 20:34:09 lb01 init: serial_console (serial_console) main process (30411) terminated with status 1
Dec 18 20:34:09 lb01 init: serial_console (serial_console) main process ended, respawning

The fix for this modifying the /etc/udev/rules.d/50-udev.rules

Change hvc0 to ttyS0, like this:

KERNEL=="hvc0",                 SYMLINK+="serial_console"

to

KERNEL=="ttyS0",                 SYMLINK+="serial_console"

Save the file and reboot the server.