1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
|
<?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" xmlns:xi="http://www.w3.org/2001/XInclude">
<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 class='system-credentials'>
<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>
<xi:include href="version-info.xml" xpointer="v252"/>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>firstboot.locale</varname></term>
<term><varname>firstboot.locale-messages</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>network.dns</varname></term>
<term><varname>network.search_domains</varname></term>
<listitem>
<para>DNS server information and search domains. Read by
<citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
<xi:include href="version-info.xml" xpointer="v253"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</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>
<xi:include href="version-info.xml" xpointer="v252"/>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>fstab.extra</varname></term>
<listitem>
<para>Additional mounts to establish at boot. For details, see
<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
<xi:include href="version-info.xml" xpointer="v254"/>
</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>Console settings to apply, see
<citerefentry><refentrytitle>systemd-vconsole-setup.service</refentrytitle><manvolnum>8</manvolnum></citerefentry> for details.</para>
<xi:include href="version-info.xml" xpointer="v253"/>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>getty.ttys.serial</varname></term>
<term><varname>getty.ttys.container</varname></term>
<listitem><para>Used for spawning additional login prompts, see
<citerefentry><refentrytitle>systemd-getty-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry> for details.</para>
<xi:include href="version-info.xml" xpointer="v254"/></listitem>
</varlistentry>
<varlistentry>
<term><varname>vmm.notify_socket</varname></term>
<listitem>
<para>Configures an
<citerefentry><refentrytitle>sd_notify</refentrytitle><manvolnum>3</manvolnum></citerefentry>
compatible <constant>AF_VSOCK</constant> socket the service manager will report status information,
ready notification and exit status on. For details see
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
<xi:include href="version-info.xml" xpointer="v253"/>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>system.machine_id</varname></term>
<listitem>
<para>Takes a 128bit ID to initialize the machine ID from (if it is not set yet). Interpreted by
the service manager (PID 1). For details see
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
<xi:include href="version-info.xml" xpointer="v254"/>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>home.create.*</varname></term>
<listitem>
<para>Creates a home area for the specified user with the user record data passed in. For details see
<citerefentry><refentrytitle>homectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>.</para>
<xi:include href="version-info.xml" xpointer="v256"/>
</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>,
<citerefentry><refentrytitle>smbios-type-11</refentrytitle><manvolnum>7</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
|
