systemd-getty-generator is a generator that automatically instantiates
serial-getty@.service on the kernel console /dev/console if that is not
directed to the virtual console subsystem. It will also instantiate
serial-getty@.service instances for virtualizer consoles, if execution
in a virtualized environment is detected. Finally, it will instantiate
container-getty@.service instances for additional container pseudo TTYs
as requested by the container manager (see Container Interface).
This should ensure that the user is shown a login prompt at the right
place, regardless of which environment the system is started in. For
example, it is sufficient to redirect the kernel console with a kernel
command line argument such as console= to get both kernel messages and
a getty prompt on a serial TTY. See kernel-parameters.txt for more
information on the console= kernel parameter.
systemd-getty-generator implements systemd.generator(7).
Further information about configuration of gettys you may find in
systemd for Administrators, Part XVI: Gettys on Serial Consoles (and
3. systemd for Administrators, Part XVI: Gettys on Serial Consoles
systemd 229 SYSTEMD-GETTY-GENERATOR(8)
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