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ec07c3c80b
This tries to add information about when each option was added. It goes back to version 183. The version info is included from a separate file to allow generating it, which would allow more control on the formatting of the final output.
182 lines
7.2 KiB
XML
182 lines
7.2 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="machine-info" xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>machine-info</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>machine-info</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>machine-info</refname>
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<refpurpose>Local machine information file</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/etc/machine-info</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>The <filename>/etc/machine-info</filename> file contains
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machine metadata.</para>
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<para>The format of <filename>machine-info</filename> is a newline-separated list of environment-like
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shell-compatible variable assignments, ignoring comments and empty lines. It is possible to source the
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configuration from shell scripts, however, beyond mere variable assignments no shell features are
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supported, allowing applications to read the file without implementing a shell compatible execution
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engine. See
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<citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry> for a
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detailed description of the format.</para>
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<para><filename>/etc/machine-info</filename> contains metadata about the machine that is set by the user
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or administrator. The settings configured here have the highest precedence. When not set, appropriate
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values may be determined automatically, based on the information about the hardware or other
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configuration files. It is thus completely fine for this file to not be present.</para>
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<para>You may use
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<citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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to change the settings of this file from the command line.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following machine metadata parameters may be set using
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<filename>/etc/machine-info</filename>:</para>
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<variablelist class='environment-variables'>
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<varlistentry>
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<term><varname>PRETTY_HOSTNAME=</varname></term>
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<listitem><para>A pretty human-readable UTF-8 machine
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identifier string. This should contain a name like
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<literal>Lennart's Laptop</literal> which is useful to present
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to the user and does not suffer by the syntax limitations of
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internet domain names. If possible, the internet hostname as
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configured in <filename>/etc/hostname</filename> should be
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kept similar to this one. Example: if this value is
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<literal>Lennart's Computer</literal> an Internet hostname of
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<literal>lennarts-computer</literal> might be a good choice.
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If this parameter is not set, an application should fall back
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to the Internet hostname for presentation
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purposes.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>ICON_NAME=</varname></term>
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<listitem><para>An icon identifying this machine according to
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the <ulink
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url="https://standards.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html">XDG
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Icon Naming Specification</ulink>. If this parameter is not
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set, an application should fall back to
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<literal>computer</literal> or a similar icon
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name.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>CHASSIS=</varname></term>
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<listitem><para>The chassis type. Currently, the following
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chassis types are defined:
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<literal>desktop</literal>,
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<literal>laptop</literal>,
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<literal>convertible</literal>,
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<literal>server</literal>,
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<literal>tablet</literal>,
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<literal>handset</literal>,
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<literal>watch</literal>, and
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<literal>embedded</literal>,
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as well as the special chassis types
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<literal>vm</literal> and
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<literal>container</literal> for
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virtualized systems that lack an immediate physical chassis.</para>
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<para>Note that most systems allow detection of the chassis type automatically (based on firmware
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information or suchlike). This setting should only be used to override a misdetection or to manually
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configure the chassis type where automatic detection is not available.</para>
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<xi:include href="version-info.xml" xpointer="v197"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DEPLOYMENT=</varname></term>
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<listitem><para>Describes the system deployment environment.
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One of the following is suggested:
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<literal>development</literal>,
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<literal>integration</literal>,
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<literal>staging</literal>,
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<literal>production</literal>.
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</para>
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<xi:include href="version-info.xml" xpointer="v216"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>LOCATION=</varname></term>
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<listitem><para>Describes the system location if applicable
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and known. Takes a human-friendly, free-form string. This may
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be as generic as <literal>Berlin, Germany</literal> or as
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specific as <literal>Left Rack, 2nd Shelf</literal>.
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</para>
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<xi:include href="version-info.xml" xpointer="v216"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>HARDWARE_VENDOR=</varname></term>
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<listitem><para>Specifies the hardware vendor. If unspecified, the hardware vendor set in DMI or
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<citerefentry><refentrytitle>hwdb</refentrytitle><manvolnum>7</manvolnum></citerefentry> will be
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used.</para>
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<xi:include href="version-info.xml" xpointer="v251"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>HARDWARE_MODEL=</varname></term>
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<listitem><para>Specifies the hardware model. If unspecified, the hardware model set in DMI or
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<citerefentry><refentrytitle>hwdb</refentrytitle><manvolnum>7</manvolnum></citerefentry> will be
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used.</para>
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<xi:include href="version-info.xml" xpointer="v251"/></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Example</title>
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<programlisting>PRETTY_HOSTNAME="Lennart's Tablet"
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ICON_NAME=computer-tablet
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CHASSIS=tablet
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DEPLOYMENT=production</programlisting>
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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><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>hostname</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>hostnamectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-hostnamed.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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