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* Containers don't use serial-getty@console.service, they use console-getty.service instead, and suppress scanning for kernel or virtualizer consoles. * Nowadays gettys are started on *all* configured kernel consoles. * except for the line printer console, because that's not a tty. (Seriously. Search CONFIG_LP_CONSOLE).
99 lines
3.9 KiB
XML
99 lines
3.9 KiB
XML
<?xml version="1.0"?>
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<!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-getty-generator">
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<refentryinfo>
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<title>systemd-getty-generator</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-getty-generator</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-getty-generator</refname>
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<refpurpose>Generator for enabling getty instances on the
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console</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/usr/lib/systemd/system-generators/systemd-getty-generator</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-getty-generator</filename> is a generator
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that automatically instantiates
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<filename>serial-getty@.service</filename> on the kernel
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console(s), if they can function as ttys and are not provided by
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the virtual console subsystem. It will also instantiate
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<filename>serial-getty@.service</filename> instances for
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virtualizer consoles, if execution in a virtualized environment is
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detected. If execution in a container environment is detected, it
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will instead enable <filename>console-getty.service</filename> for
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<filename>/dev/console</filename>, and
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<filename>container-getty@.service</filename> instances for
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additional container pseudo TTYs as requested by the container
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manager (see <ulink
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url="https://www.freedesktop.org/wiki/Software/systemd/ContainerInterface/"><filename>Container
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Interface</filename></ulink>). This should ensure that the user is
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shown a login prompt at the right place, regardless of which
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environment the system is started in. For example, it is
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sufficient to redirect the kernel console with a kernel command
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line argument such as <varname>console=</varname> to get both
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kernel messages and a getty prompt on a serial TTY. See <ulink
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url="https://www.kernel.org/doc/Documentation/kernel-parameters.txt"><filename>kernel-parameters.txt</filename></ulink>
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for more information on the <varname>console=</varname> kernel
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parameter.</para>
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<para><filename>systemd-getty-generator</filename> implements
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<citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
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<para>Further information about configuration of gettys can be
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found in
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<ulink url="http://0pointer.de/blog/projects/serial-console.html">systemd
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for Administrators, Part XVI: Gettys on Serial Consoles (and
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Elsewhere)</ulink>.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>agetty</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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