mirror of
https://github.com/systemd/systemd.git
synced 2024-12-01 06:13:38 +08:00
ee48dbd55f
Allow for overriding all other machine-ids which may be present on the system using a kernel command line systemd.machine_id or --machine-id= option. This is especially useful for network booted systems where the machine-id needs to be static, or for containers where a specific machine-id is wanted.
374 lines
16 KiB
XML
374 lines
16 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
|
|
|
<!--
|
|
This file is part of systemd.
|
|
|
|
Copyright 2012 Lennart Poettering
|
|
|
|
systemd is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
systemd is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
-->
|
|
|
|
<refentry id="kernel-command-line">
|
|
|
|
<refentryinfo>
|
|
<title>kernel-command-line</title>
|
|
<productname>systemd</productname>
|
|
|
|
<authorgroup>
|
|
<author>
|
|
<contrib>Developer</contrib>
|
|
<firstname>Lennart</firstname>
|
|
<surname>Poettering</surname>
|
|
<email>lennart@poettering.net</email>
|
|
</author>
|
|
</authorgroup>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>kernel-command-line</refentrytitle>
|
|
<manvolnum>7</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>kernel-command-line</refname>
|
|
<refpurpose>Kernel command line parameters</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<para><filename>/proc/cmdline</filename></para>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>The kernel, the initial RAM disk (initrd) and
|
|
basic userspace functionality may be configured at boot via
|
|
kernel command line arguments.</para>
|
|
|
|
<para>For command line parameters understood by the kernel, please
|
|
see <ulink
|
|
url="https://www.kernel.org/doc/Documentation/kernel-parameters.txt"><filename>kernel-parameters.txt</filename></ulink>
|
|
and
|
|
<citerefentry project='man-pages'><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
|
|
|
|
<para>For command line parameters understood by the initial RAM
|
|
disk, please see
|
|
<citerefentry project='man-pages'><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
|
|
or the documentation of the specific initrd implementation of your
|
|
installation.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Core OS Command Line Arguments</title>
|
|
|
|
<variablelist class='kernel-commandline-options'>
|
|
<varlistentry>
|
|
<term><varname>systemd.unit=</varname></term>
|
|
<term><varname>rd.systemd.unit=</varname></term>
|
|
<term><varname>systemd.dump_core=</varname></term>
|
|
<term><varname>systemd.crash_chvt=</varname></term>
|
|
<term><varname>systemd.crash_shell=</varname></term>
|
|
<term><varname>systemd.crash_reboot=</varname></term>
|
|
<term><varname>systemd.confirm_spawn=</varname></term>
|
|
<term><varname>systemd.show_status=</varname></term>
|
|
<term><varname>systemd.log_target=</varname></term>
|
|
<term><varname>systemd.log_level=</varname></term>
|
|
<term><varname>systemd.log_color=</varname></term>
|
|
<term><varname>systemd.log_location=</varname></term>
|
|
<term><varname>systemd.default_standard_output=</varname></term>
|
|
<term><varname>systemd.default_standard_error=</varname></term>
|
|
<term><varname>systemd.setenv=</varname></term>
|
|
<term><varname>systemd.machine_id=</varname></term>
|
|
<listitem>
|
|
<para>Parameters understood by the system and service
|
|
manager to control system behavior. For details, see
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>systemd.mask=</varname></term>
|
|
<term><varname>systemd.wants=</varname></term>
|
|
<term><varname>systemd.debug-shell</varname></term>
|
|
<listitem>
|
|
<para>Additional parameters understood by
|
|
<citerefentry><refentrytitle>systemd-debug-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
to mask or start specific units at boot, or invoke a debug
|
|
shell on tty9.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>systemd.restore_state=</varname></term>
|
|
<listitem>
|
|
<para>This parameter is understood by several system tools
|
|
to control whether or not they should restore system state
|
|
from the previous boot. For details, see
|
|
<citerefentry><refentrytitle>systemd-backlight@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
|
|
and
|
|
<citerefentry><refentrytitle>systemd-rfkill.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>quiet</varname></term>
|
|
<listitem>
|
|
<para>Parameter understood by both the kernel and the system
|
|
and service manager to control console log verbosity. For
|
|
details, see
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>debug</varname></term>
|
|
<listitem>
|
|
<para>Parameter understood by both the kernel and the system
|
|
and service manager to control console log verbosity. For
|
|
details, see
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>-b</varname></term>
|
|
<term><varname>emergency</varname></term>
|
|
<term><varname>rescue</varname></term>
|
|
<term><varname>single</varname></term>
|
|
<term><varname>s</varname></term>
|
|
<term><varname>S</varname></term>
|
|
<term><varname>1</varname></term>
|
|
<term><varname>2</varname></term>
|
|
<term><varname>3</varname></term>
|
|
<term><varname>4</varname></term>
|
|
<term><varname>5</varname></term>
|
|
<listitem>
|
|
<para>Parameters understood by the system and service
|
|
manager, as compatibility options. For details, see
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>locale.LANG=</varname></term>
|
|
<term><varname>locale.LANGUAGE=</varname></term>
|
|
<term><varname>locale.LC_CTYPE=</varname></term>
|
|
<term><varname>locale.LC_NUMERIC=</varname></term>
|
|
<term><varname>locale.LC_TIME=</varname></term>
|
|
<term><varname>locale.LC_COLLATE=</varname></term>
|
|
<term><varname>locale.LC_MONETARY=</varname></term>
|
|
<term><varname>locale.LC_MESSAGES=</varname></term>
|
|
<term><varname>locale.LC_PAPER=</varname></term>
|
|
<term><varname>locale.LC_NAME=</varname></term>
|
|
<term><varname>locale.LC_ADDRESS=</varname></term>
|
|
<term><varname>locale.LC_TELEPHONE=</varname></term>
|
|
<term><varname>locale.LC_MEASUREMENT=</varname></term>
|
|
<term><varname>locale.LC_IDENTIFICATION=</varname></term>
|
|
<listitem>
|
|
<para>Parameters understood by the system and service
|
|
manager to control locale and language settings. For
|
|
details, see
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>fsck.mode=</varname></term>
|
|
<term><varname>fsck.repair=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Parameters understood by the file system checker
|
|
services. For details, see
|
|
<citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>quotacheck.mode=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Parameter understood by the file quota checker
|
|
service. For details, see
|
|
<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>systemd.journald.forward_to_syslog=</varname></term>
|
|
<term><varname>systemd.journald.forward_to_kmsg=</varname></term>
|
|
<term><varname>systemd.journald.forward_to_console=</varname></term>
|
|
<term><varname>systemd.journald.forward_to_wall=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Parameters understood by the journal service. For
|
|
details, see
|
|
<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>vconsole.keymap=</varname></term>
|
|
<term><varname>vconsole.keymap.toggle=</varname></term>
|
|
<term><varname>vconsole.font=</varname></term>
|
|
<term><varname>vconsole.font.map=</varname></term>
|
|
<term><varname>vconsole.font.unimap=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Parameters understood by the virtual console setup
|
|
logic. For details, see
|
|
<citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>udev.log-priority=</varname></term>
|
|
<term><varname>rd.udev.log-priority=</varname></term>
|
|
<term><varname>udev.children-max=</varname></term>
|
|
<term><varname>rd.udev.children-max=</varname></term>
|
|
<term><varname>udev.exec-delay=</varname></term>
|
|
<term><varname>rd.udev.exec-delay=</varname></term>
|
|
<term><varname>udev.event-timeout=</varname></term>
|
|
<term><varname>rd.udev.event-timeout=</varname></term>
|
|
<term><varname>net.ifnames=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Parameters understood by the device event managing
|
|
daemon. For details, see
|
|
<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>plymouth.enable=</varname></term>
|
|
|
|
<listitem>
|
|
<para>May be used to disable the Plymouth boot splash. For
|
|
details, see
|
|
<citerefentry project='die-net'><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>luks=</varname></term>
|
|
<term><varname>rd.luks=</varname></term>
|
|
<term><varname>luks.crypttab=</varname></term>
|
|
<term><varname>rd.luks.crypttab=</varname></term>
|
|
<term><varname>luks.name=</varname></term>
|
|
<term><varname>rd.luks.name=</varname></term>
|
|
<term><varname>luks.uuid=</varname></term>
|
|
<term><varname>rd.luks.uuid=</varname></term>
|
|
<term><varname>luks.options=</varname></term>
|
|
<term><varname>rd.luks.options=</varname></term>
|
|
<term><varname>luks.key=</varname></term>
|
|
<term><varname>rd.luks.key=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Configures the LUKS full-disk encryption logic at
|
|
boot. For details, see
|
|
<citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>fstab=</varname></term>
|
|
<term><varname>rd.fstab=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Configures the <filename>/etc/fstab</filename> logic
|
|
at boot. For details, see
|
|
<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>root=</varname></term>
|
|
<term><varname>rootfstype=</varname></term>
|
|
<term><varname>rootflags=</varname></term>
|
|
<term><varname>ro</varname></term>
|
|
<term><varname>rw</varname></term>
|
|
|
|
<listitem>
|
|
<para>Configures the root file system and its file system
|
|
type and mount options, as well as whether it shall be
|
|
mounted read-only or read-writable initially. For details,
|
|
see
|
|
<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>systemd.gpt_auto=</varname></term>
|
|
<term><varname>rd.systemd.gpt_auto=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Configures whether GPT based partition auto-discovery
|
|
shall be attempted. For details, see
|
|
<citerefentry><refentrytitle>systemd-gpt-auto-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>modules-load=</varname></term>
|
|
<term><varname>rd.modules-load=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Load a specific kernel module early at boot. For
|
|
details, see
|
|
<citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>resume=</varname></term>
|
|
|
|
<listitem>
|
|
<para>Enables resume from hibernation using the specified
|
|
device. All
|
|
<citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>-like
|
|
paths are supported. For details, see
|
|
<citerefentry><refentrytitle>systemd-hibernate-resume-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry project='man-pages'><refentrytitle>bootparam</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
|
|
<citerefentry project='man-pages'><refentrytitle>dracut.cmdline</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-debug-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-fsck@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-quotacheck.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry project='die-net'><refentrytitle>plymouth</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-cryptsetup-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-gpt-auto-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-modules-load.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-backlight@.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-rfkill.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-hibernate-resume-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|