NAME

       systemd-getty-generator - Generator for enabling getty instances on the console

SYNOPSIS

       /usr/lib/systemd/system-generators/systemd-getty-generator

DESCRIPTION

       systemd-getty-generator is a generator that automatically instantiates serial-getty@.service on the
       kernel consoles, if they can function as ttys and are not provided by the virtual console subsystem. It
       will also instantiate serial-getty@.service instances for virtualizer consoles, if execution in a
       virtualized environment is detected. If execution in a container environment is detected, it will instead
       enable console-getty.service for /dev/console, and container-getty@.service instances for additional
       container pseudo TTYs as requested by the container manager (see Container Interface[1]). 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 The
       kernel's command-line parameters[2] for more information on the console= kernel parameter.

       systemd-getty-generator implements systemd.generator(7).

       Further information about configuration of gettys can be found in systemd for Administrators, Part XVI:
       Gettys on Serial Consoles (and Elsewhere)[3].

KERNEL COMMAND LINE

       systemd-getty-generator understands the following kernel-command-line(7) parameters:

       systemd.getty_auto=
           this options take an optional boolean argument, and default to yes. The generator is enabled by
           default, and a false value may be used to disable it.

           Added in version 250.

ENVIRONMENT

       $SYSTEMD_GETTY_AUTO
           This variable takes an optional boolean argument, and default to yes. The generator is enabled by
           default, and a false value may be used to disable it.

           Added in version 250.

SYSTEM CREDENTIALS

       getty.ttys.serial, getty.ttys.container
           These system credentials may be used to spawn additional login prompts on selected TTYs. The two
           credentials should contain a newline-separated list of TTY names to spawn instances of
           serial-getty@.service (in case of getty.ttys.serial) and container-getty@.service (in case of
           getty.ttys.container) on.

           Added in version 254.

SEE ALSO

       systemd(1), kernel-command-line(7), systemd.system-credentials(7), agetty(8)

NOTES

        1. Container
               Interface
           https://systemd.io/CONTAINER_INTERFACE

        2. The kernel's command-line parameters
           https://docs.kernel.org/admin-guide/kernel-parameters.html

        3. systemd for Administrators, Part XVI: Gettys on Serial Consoles (and Elsewhere)
           https://0pointer.de/blog/projects/serial-console.html