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https://github.com/systemd/systemd
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cfd8920243
I find myself trying to log into a fresh ParticleOS VM started via systemd-vmspawn all the time, but I don't know its CID. Let's show it on the getty screen, to make it immediately visible.
100 lines
4.1 KiB
XML
100 lines
4.1 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/4.5/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="systemd-ssh-issue"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-ssh-issue</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-ssh-issue</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-ssh-issue</refname>
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<refpurpose>Generator for SSH login prompt drop-ins</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>/usr/lib/systemd/systemd-ssh-issue <option>--make-vsock</option></command>
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<command>/usr/lib/systemd/systemd-ssh-issue <option>--rm-vsock</option></command>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-ssh-issue</command> is a small tool that generates a
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<filename>/run/issue.d/50-ssh-vsock.issue</filename> drop-in file in case <constant>AF_VSOCK</constant>
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support is available in the kernel and the VM environment. The file contains brief information about how
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to contact the local system via SSH-over-<constant>AF_VSOCK</constant>, in particular it reports the
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system's <constant>AF_VSOCK</constant> CID. The file is typically read and displayed by <citerefentry
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project='man-pages'><refentrytitle>agetty</refentrytitle><manvolnum>8</manvolnum></citerefentry> on
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console or serial login prompts.</para>
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<para>This tool is automatically used by
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<citerefentry><refentrytitle>systemd-ssh-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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in the <constant>AF_VSOCK</constant> socket units it generates.</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 options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--make-vsock</option></term>
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<listitem><para>Generates the issue file. This command has no effect if called on systems lacking
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<constant>AF_VSOCK</constant> support.</para>
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<xi:include href="version-info.xml" xpointer="v258"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--rm-vsock</option></term>
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<listitem><para>Removes the issue file if it exists.</para>
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<xi:include href="version-info.xml" xpointer="v258"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--issue-path=</option></term>
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<listitem><para>Changes the path to the issue file to write to/remove. If not specified, defaults to
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<filename>/run/issue.d/50-ssh-vsock.issue</filename>. If specified as empty string or
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<literal>-</literal> writes the issue file contents to standard output.</para>
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<xi:include href="version-info.xml" xpointer="v258"/></listitem>
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</varlistentry>
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<xi:include href="standard-options.xml" xpointer="help"/>
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<xi:include href="standard-options.xml" xpointer="version"/>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success, 0 is returned, a non-zero failure code
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otherwise.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para><simplelist type="inline">
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<member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
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<member><citerefentry><refentrytitle>systemd-ssh-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry></member>
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<member><citerefentry project="man-pages"><refentrytitle>vsock</refentrytitle><manvolnum>7</manvolnum></citerefentry></member>
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<member><citerefentry project="man-pages"><refentrytitle>ssh</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
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<member><citerefentry project="man-pages"><refentrytitle>sshd</refentrytitle><manvolnum>8</manvolnum></citerefentry></member>
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<member><citerefentry project='man-pages'><refentrytitle>agetty</refentrytitle><manvolnum>8</manvolnum></citerefentry></member>
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</simplelist></para>
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</refsect1>
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</refentry>
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