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+<?xml version='1.0'?> <!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
+
+<refentry id="systemd.system-credentials">
+
+ <refentryinfo>
+ <title>systemd.system-credentials</title>
+ <productname>systemd</productname>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd.system-credentials</refentrytitle>
+ <manvolnum>7</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd.system-credentials</refname>
+ <refpurpose>System Credentials</refpurpose>
+ </refnamediv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><ulink url="https://systemd.io/CREDENTIALS">System and Service Credentials</ulink> are data objects
+ that may be passed into booted systems or system services as they are invoked. They can be acquired from
+ various external sources, and propagated into the system and from there into system services. Credentials
+ may optionally be encrypted with a machine-specific key and/or locked to the local TPM2 device, and are
+ only decrypted when the consuming service is invoked.</para>
+
+ <para>System credentials may be used to provision and configure various aspects of the system. Depending
+ on the consuming component credentials are only used on initial invocations or are needed for all
+ invocations.</para>
+
+ <para>Credentials may be used for any kind of data, binary or text, and may carry passwords, secrets,
+ certificates, cryptographic key material, identity information, configuration, and more.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Well known system credentials</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><varname>firstboot.keymap</varname></term>
+ <listitem>
+ <para>The console key mapping to set (e.g. <literal>de</literal>). Read by
+ <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ and only honoured if no console keymap has been configured before.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>firstboot.locale</varname></term>
+ <term><varname>firstboot.locale-message</varname></term>
+ <listitem>
+ <para>The system locale to set (e.g. <literal>de_DE.UTF-8</literal>). Read by
+ <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ and only honoured if no locale has been configured before. <varname>firstboot.locale</varname> sets
+ <literal>LANG</literal>, while <varname>firstboot.locale-message</varname> sets
+ <literal>LC_MESSAGES</literal>.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>firstboot.timezone</varname></term>
+ <listitem>
+ <para>The system timezone to set (e.g. <literal>Europe/Berlin</literal>). Read by
+ <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ and only honoured if no system timezone has been configured before.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>login.issue</varname></term>
+ <listitem>
+ <para>The data of this credential is written to
+ <filename>/etc/issue.d/50-provision.conf</filename>, if the file doesn't exist yet.
+ <citerefentry project='man-pages'><refentrytitle>agetty</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ reads this file and shows its contents at the login prompt of terminal logins. See
+ <citerefentry project='man-pages'><refentrytitle>issue</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para>
+
+ <para>Consumed by <filename>/usr/lib/tmpfiles.d/provision.conf</filename>, see
+ <citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>login.motd</varname></term>
+ <listitem>
+ <para>The data of this credential is written to <filename>/etc/motd.d/50-provision.conf</filename>,
+ if the file doesn't exist yet.
+ <citerefentry project='man-pages'><refentrytitle>pam_motd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ reads this file and shows its contents as "message of the day" during terminal logins. See
+ <citerefentry project='man-pages'><refentrytitle>motd</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para>
+
+ <para>Consumed by <filename>/usr/lib/tmpfiles.d/provision.conf</filename>, see
+ <citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>network.hosts</varname></term>
+ <listitem>
+ <para>The data of this credential is written to <filename>/etc/hosts</filename>, if the file
+ doesn't exist yet. See
+ <citerefentry project='man-pages'><refentrytitle>hosts</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ for details.</para>
+
+ <para>Consumed by <filename>/usr/lib/tmpfiles.d/provision.conf</filename>, see
+ <citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>passwd.hashed-password.root</varname></term>
+ <term><varname>passwd.plaintext-password.root</varname></term>
+ <listitem>
+ <para>May contain the password (either in UNIX hashed format, or in plaintext) for the root users.
+ Read by both
+ <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ and
+ <citerefentry><refentrytitle>systemd-sysusers</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ and only honoured if no root password has been configured before.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>passwd.shell.root</varname></term>
+ <listitem>
+ <para>The path to the shell program (e.g. <literal>/bin/bash</literal>) for the root user. Read by
+ both
+ <citerefentry><refentrytitle>systemd-firstboot</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ and
+ <citerefentry><refentrytitle>systemd-sysusers</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ and only honoured if no root shell has been configured before.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>ssh.authorized_keys.root</varname></term>
+ <listitem>
+ <para>The data of this credential is written to <filename>/root/.ssh/authorized_keys</filename>, if
+ the file doesn't exist yet. This allows provisioning SSH access for the system's root user.</para>
+
+ <para>Consumed by <filename>/usr/lib/tmpfiles.d/provision.conf</filename>, see
+ <citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>sysusers.extra</varname></term>
+ <listitem>
+ <para>Additional
+ <citerefentry><refentrytitle>sysusers.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ lines to process during boot.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>sysctl.extra</varname></term>
+ <listitem>
+ <para>Additional
+ <citerefentry><refentrytitle>sysctl.d</refentrytitle><manvolnum>5</manvolnum></citerefentry> lines
+ to process during boot.</para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><varname>tmpfiles.extra</varname></term>
+ <listitem>
+ <para>Additional
+ <citerefentry><refentrytitle>tmpfiles.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
+ lines to process during boot.</para>
+ </listitem>
+ </varlistentry>
+
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>kernel-command-line</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+ </para>
+ </refsect1>
+
+</refentry>