]>
Commit | Line | Data |
---|---|---|
514094f9 | 1 | <?xml version='1.0'?> |
3a54a157 | 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
f757855e LP |
3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [ |
4 | <!ENTITY % entities SYSTEM "custom-entities.ent" > | |
5 | %entities; | |
6 | ]> | |
0307f791 | 7 | <!-- SPDX-License-Identifier: LGPL-2.1+ --> |
f757855e LP |
8 | |
9 | <refentry id="systemd.nspawn"> | |
10 | ||
11 | <refentryinfo> | |
12 | <title>systemd.nspawn</title> | |
13 | <productname>systemd</productname> | |
f757855e LP |
14 | </refentryinfo> |
15 | ||
16 | <refmeta> | |
17 | <refentrytitle>systemd.nspawn</refentrytitle> | |
18 | <manvolnum>5</manvolnum> | |
19 | </refmeta> | |
20 | ||
21 | <refnamediv> | |
22 | <refname>systemd.nspawn</refname> | |
23 | <refpurpose>Container settings</refpurpose> | |
24 | </refnamediv> | |
25 | ||
26 | <refsynopsisdiv> | |
27 | <para><filename>/etc/systemd/nspawn/<replaceable>machine</replaceable>.nspawn</filename></para> | |
28 | <para><filename>/run/systemd/nspawn/<replaceable>machine</replaceable>.nspawn</filename></para> | |
29 | <para><filename>/var/lib/machines/<replaceable>machine</replaceable>.nspawn</filename></para> | |
30 | </refsynopsisdiv> | |
31 | ||
32 | <refsect1> | |
33 | <title>Description</title> | |
34 | ||
6a5b75db ZJS |
35 | <para>An nspawn container settings file (suffix <filename>.nspawn</filename>) contains runtime |
36 | configuration for a local container, and is used used by | |
37 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry>. | |
38 | Files of this type are named after the containers they define settings for. They are optional, and only | |
39 | required for containers whose execution environment shall differ from the defaults. Files of this type | |
40 | mostly contain settings that may also be set on the <command>systemd-nspawn</command> command line, and | |
41 | make it easier to persistently attach specific settings to specific containers. The syntax of these files | |
42 | is inspired by <filename>.desktop</filename> files, similarly to other configuration files supported by | |
43 | the systemd project. See | |
44 | <citerefentry><refentrytitle>systemd.syntax</refentrytitle><manvolnum>7</manvolnum></citerefentry> for an | |
45 | overview.</para> | |
f757855e LP |
46 | </refsect1> |
47 | ||
48 | <refsect1> | |
49 | <title><filename>.nspawn</filename> File Discovery</title> | |
50 | ||
6a5b75db ZJS |
51 | <para>Files are searched for by appending the <filename>.nspawn</filename> suffix to the machine name of |
52 | the container, as specified with the <option>--machine=</option> switch of | |
53 | <command>systemd-nspawn</command>, or derived from the directory or image file name. This file is first | |
54 | searched for in <filename>/etc/systemd/nspawn/</filename> and | |
55 | <filename>/run/systemd/nspawn/</filename>. If found there, the settings are read and all of them take | |
56 | full effect (but may still be overridden by corresponding command line arguments). Otherwise, the file | |
57 | will then be searched for next to the image file or in the immediate parent of the root directory of the | |
58 | container. If the file is found there, only a subset of the settings will take effect however. All | |
59 | settings that possibly elevate privileges or grant additional access to resources of the host (such as | |
60 | files or directories) are ignored. To which options this applies is documented below.</para> | |
f757855e | 61 | |
a8eaaee7 | 62 | <para>Persistent settings files created and maintained by the |
f757855e LP |
63 | administrator (and thus trusted) should be placed in |
64 | <filename>/etc/systemd/nspawn/</filename>, while automatically | |
65 | downloaded (and thus potentially untrusted) settings files are | |
66 | placed in <filename>/var/lib/machines/</filename> instead (next to | |
67 | the container images), where their security impact is limited. In | |
68 | order to add privileged settings to <filename>.nspawn</filename> | |
b938cb90 | 69 | files acquired from the image vendor, it is recommended to copy the |
f757855e LP |
70 | settings files into <filename>/etc/systemd/nspawn/</filename> and |
71 | edit them there, so that the privileged options become | |
a8eaaee7 | 72 | available. The precise algorithm for how the files are searched and |
f757855e LP |
73 | interpreted may be configured with |
74 | <command>systemd-nspawn</command>'s <option>--settings=</option> | |
75 | switch, see | |
76 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
77 | for details.</para> | |
78 | </refsect1> | |
79 | ||
80 | <refsect1> | |
81 | <title>[Exec] Section Options</title> | |
82 | ||
83 | <para>Settings files may include an <literal>[Exec]</literal> | |
84 | section, which carries various execution parameters:</para> | |
85 | ||
37dac218 | 86 | <variablelist class='nspawn-directives'> |
f757855e LP |
87 | |
88 | <varlistentry> | |
89 | <term><varname>Boot=</varname></term> | |
90 | ||
7732f92b LP |
91 | <listitem><para>Takes a boolean argument, which defaults to off. If enabled, <command>systemd-nspawn</command> |
92 | will automatically search for an <filename>init</filename> executable and invoke it. In this case, the | |
93 | specified parameters using <varname>Parameters=</varname> are passed as additional arguments to the | |
94 | <filename>init</filename> process. This setting corresponds to the <option>--boot</option> switch on the | |
95 | <command>systemd-nspawn</command> command line. This option may not be combined with | |
7e95efb5 ZJS |
96 | <varname>ProcessTwo=yes</varname>. This option is specified by default in the |
97 | <filename>systemd-nspawn@.service</filename> template unit.</para></listitem> | |
7732f92b LP |
98 | </varlistentry> |
99 | ||
a2f577fc JL |
100 | <varlistentry> |
101 | <term><varname>Ephemeral=</varname></term> | |
102 | ||
103 | <listitem><para>Takes a boolean argument, which defaults to off, If enabled, the container is run with | |
104 | a temporary snapshot of its file system that is removed immediately when the container terminates. | |
105 | This is equivalent to the <option>--ephemeral</option> command line switch. See | |
106 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for details | |
107 | about the specific options supported.</para></listitem> | |
108 | </varlistentry> | |
109 | ||
7732f92b LP |
110 | <varlistentry> |
111 | <term><varname>ProcessTwo=</varname></term> | |
112 | ||
113 | <listitem><para>Takes a boolean argument, which defaults to off. If enabled, the specified program is run as | |
114 | PID 2. A stub init process is run as PID 1. This setting corresponds to the <option>--as-pid2</option> switch | |
115 | on the <command>systemd-nspawn</command> command line. This option may not be combined with | |
116 | <varname>Boot=yes</varname>.</para></listitem> | |
f757855e LP |
117 | </varlistentry> |
118 | ||
119 | <varlistentry> | |
120 | <term><varname>Parameters=</varname></term> | |
121 | ||
7e95efb5 ZJS |
122 | <listitem><para>Takes a whitespace-separated list of arguments. Single (<literal>'</literal>) and |
123 | double (<literal>"</literal>) quotes may be used around arguments with whitespace. This is either a | |
124 | command line, beginning with the binary name to execute, or – if <varname>Boot=</varname> is enabled | |
125 | – the list of arguments to pass to the init process. This setting corresponds to the command line | |
126 | parameters passed on the <command>systemd-nspawn</command> command line.</para> | |
127 | ||
128 | <para>Note: <option>Boot=no</option>, <option>Parameters=a b "c c"</option> is the same as | |
129 | <command>systemd-nspawn a b "c c"</command>, and <option>Boot=yes</option>, <option>Parameters=b 'c c'</option> | |
130 | is the same as <command>systemd-nspawn --boot b 'c c'</command>.</para></listitem> | |
f757855e LP |
131 | </varlistentry> |
132 | ||
133 | <varlistentry> | |
134 | <term><varname>Environment=</varname></term> | |
135 | ||
136 | <listitem><para>Takes an environment variable assignment | |
137 | consisting of key and value, separated by | |
138 | <literal>=</literal>. Sets an environment variable for the | |
139 | main process invoked in the container. This setting may be | |
140 | used multiple times to set multiple environment variables. It | |
141 | corresponds to the <option>--setenv=</option> command line | |
142 | switch.</para></listitem> | |
143 | </varlistentry> | |
144 | ||
145 | <varlistentry> | |
146 | <term><varname>User=</varname></term> | |
147 | ||
148 | <listitem><para>Takes a UNIX user name. Specifies the user | |
149 | name to invoke the main process of the container as. This user | |
150 | must be known in the container's user database. This | |
151 | corresponds to the <option>--user=</option> command line | |
5f932eb9 LP |
152 | switch.</para></listitem> |
153 | </varlistentry> | |
154 | ||
155 | <varlistentry> | |
156 | <term><varname>WorkingDirectory=</varname></term> | |
157 | ||
158 | <listitem><para>Selects the working directory for the process invoked in the container. Expects an absolute | |
159 | path in the container's file system namespace. This corresponds to the <option>--chdir=</option> command line | |
f757855e LP |
160 | switch.</para></listitem> |
161 | </varlistentry> | |
162 | ||
b53ede69 PW |
163 | <varlistentry> |
164 | <term><varname>PivotRoot=</varname></term> | |
165 | ||
166 | <listitem><para>Selects a directory to pivot to <filename>/</filename> inside the container when starting up. | |
167 | Takes a single path, or a pair of two paths separated by a colon. Both paths must be absolute, and are resolved | |
168 | in the container's file system namespace. This corresponds to the <option>--pivot-root=</option> command line | |
169 | switch.</para></listitem> | |
170 | </varlistentry> | |
171 | ||
f757855e LP |
172 | <varlistentry> |
173 | <term><varname>Capability=</varname></term> | |
174 | <term><varname>DropCapability=</varname></term> | |
175 | ||
b938cb90 | 176 | <listitem><para>Takes a space-separated list of Linux process |
f757855e | 177 | capabilities (see |
524f3e5c | 178 | <citerefentry project='man-pages'><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry> |
f757855e LP |
179 | for details). The <varname>Capability=</varname> setting |
180 | specifies additional capabilities to pass on top of the | |
4f76ef04 | 181 | default set of capabilities. The |
f757855e LP |
182 | <varname>DropCapability=</varname> setting specifies |
183 | capabilities to drop from the default set. These settings | |
184 | correspond to the <option>--capability=</option> and | |
185 | <option>--drop-capability=</option> command line | |
186 | switches. Note that <varname>Capability=</varname> is a | |
187 | privileged setting, and only takes effect in | |
188 | <filename>.nspawn</filename> files in | |
189 | <filename>/etc/systemd/nspawn/</filename> and | |
190 | <filename>/run/system/nspawn/</filename> (see above). On the | |
b938cb90 | 191 | other hand, <varname>DropCapability=</varname> takes effect in |
c152a2ba | 192 | all cases. If the special value <literal>all</literal> is passed, all |
193 | capabilities are retained (or dropped).</para></listitem> | |
f757855e LP |
194 | </varlistentry> |
195 | ||
66edd963 LP |
196 | <varlistentry> |
197 | <term><varname>NoNewPrivileges=</varname></term> | |
198 | ||
199 | <listitem><para>Takes a boolean argument that controls the <constant>PR_SET_NO_NEW_PRIVS</constant> flag for | |
200 | the container payload. This is equivalent to the | |
201 | <option>--no-new-privileges=</option> command line switch. See | |
202 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for | |
203 | details.</para> | |
204 | </listitem> | |
205 | </varlistentry> | |
206 | ||
b3969f73 | 207 | <varlistentry> |
c9648aa6 | 208 | <term><varname>KillSignal=</varname></term> |
b3969f73 PA |
209 | |
210 | <listitem><para>Specify the process signal to send to the | |
211 | container's PID 1 when nspawn itself receives SIGTERM, in | |
212 | order to trigger an orderly shutdown of the container. | |
213 | Defaults to SIGRTMIN+3 if <option>Boot=</option> is used | |
214 | (on systemd-compatible init systems SIGRTMIN+3 triggers an | |
215 | orderly shutdown). For a list of valid signals, see | |
216 | <citerefentry project='man-pages'><refentrytitle>signal</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para></listitem> | |
217 | </varlistentry> | |
218 | ||
f757855e LP |
219 | <varlistentry> |
220 | <term><varname>Personality=</varname></term> | |
221 | ||
222 | <listitem><para>Configures the kernel personality for the | |
223 | container. This is equivalent to the | |
224 | <option>--personality=</option> switch.</para></listitem> | |
225 | </varlistentry> | |
226 | ||
227 | <varlistentry> | |
228 | <term><varname>MachineID=</varname></term> | |
229 | ||
b938cb90 | 230 | <listitem><para>Configures the 128-bit machine ID (UUID) to pass to |
f757855e LP |
231 | the container. This is equivalent to the |
232 | <option>--uuid=</option> command line switch. This option is | |
233 | privileged (see above). </para></listitem> | |
234 | </varlistentry> | |
d2e5535f LP |
235 | |
236 | <varlistentry> | |
237 | <term><varname>PrivateUsers=</varname></term> | |
238 | ||
239 | <listitem><para>Configures support for usernamespacing. This is equivalent to the | |
240 | <option>--private-users=</option> command line switch, and takes the same options. This option is privileged | |
b09c0bba LP |
241 | (see above). This option is the default if the <filename>systemd-nspawn@.service</filename> template unit file |
242 | is used.</para></listitem> | |
d2e5535f | 243 | </varlistentry> |
9c1e04d0 AP |
244 | |
245 | <varlistentry> | |
246 | <term><varname>NotifyReady=</varname></term> | |
247 | ||
960e4569 | 248 | <listitem><para>Configures support for notifications from the container's init process. This is equivalent to |
dcfaecc7 | 249 | the <option>--notify-ready=</option> command line switch, and takes the same parameters. See |
960e4569 LP |
250 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for details |
251 | about the specific options supported.</para></listitem> | |
9c1e04d0 | 252 | </varlistentry> |
960e4569 LP |
253 | |
254 | <varlistentry> | |
255 | <term><varname>SystemCallFilter=</varname></term> | |
256 | ||
257 | <listitem><para>Configures the system call filter applied to containers. This is equivalent to the | |
258 | <option>--system-call-filter=</option> command line switch, and takes the same list parameter. See | |
259 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for | |
260 | details.</para></listitem> | |
261 | </varlistentry> | |
bf428efb LP |
262 | |
263 | <varlistentry> | |
264 | <term><varname>LimitCPU=</varname></term> | |
265 | <term><varname>LimitFSIZE=</varname></term> | |
266 | <term><varname>LimitDATA=</varname></term> | |
267 | <term><varname>LimitSTACK=</varname></term> | |
268 | <term><varname>LimitCORE=</varname></term> | |
269 | <term><varname>LimitRSS=</varname></term> | |
270 | <term><varname>LimitNOFILE=</varname></term> | |
271 | <term><varname>LimitAS=</varname></term> | |
272 | <term><varname>LimitNPROC=</varname></term> | |
273 | <term><varname>LimitMEMLOCK=</varname></term> | |
274 | <term><varname>LimitLOCKS=</varname></term> | |
275 | <term><varname>LimitSIGPENDING=</varname></term> | |
276 | <term><varname>LimitMSGQUEUE=</varname></term> | |
277 | <term><varname>LimitNICE=</varname></term> | |
278 | <term><varname>LimitRTPRIO=</varname></term> | |
279 | <term><varname>LimitRTTIME=</varname></term> | |
280 | ||
281 | <listitem><para>Configures various types of resource limits applied to containers. This is equivalent to the | |
282 | <option>--rlimit=</option> command line switch, and takes the same arguments. See | |
283 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for | |
284 | details.</para></listitem> | |
285 | </varlistentry> | |
3a9530e5 | 286 | |
81f345df LP |
287 | <varlistentry> |
288 | <term><varname>OOMScoreAdjust=</varname></term> | |
289 | ||
290 | <listitem><para>Configures the OOM score adjustment value. This is equivalent to the | |
291 | <option>--oom-score-adjust=</option> command line switch, and takes the same argument. See | |
292 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for | |
293 | details.</para></listitem> | |
294 | </varlistentry> | |
295 | ||
d107bb7d LP |
296 | <varlistentry> |
297 | <term><varname>CPUAffinity=</varname></term> | |
298 | ||
299 | <listitem><para>Configures the CPU affinity. This is equivalent to the <option>--cpu-affinity=</option> command | |
300 | line switch, and takes the same argument. See | |
301 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for | |
302 | details.</para></listitem> | |
303 | </varlistentry> | |
304 | ||
3a9530e5 LP |
305 | <varlistentry> |
306 | <term><varname>Hostname=</varname></term> | |
307 | ||
308 | <listitem><para>Configures the kernel hostname set for the container. This is equivalent to the | |
309 | <option>--hostname=</option> command line switch, and takes the same argument. See | |
310 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for | |
311 | details.</para></listitem> | |
312 | </varlistentry> | |
09d423e9 LP |
313 | |
314 | <varlistentry> | |
315 | <term><varname>ResolvConf=</varname></term> | |
316 | ||
317 | <listitem><para>Configures how <filename>/etc/resolv.conf</filename> in the container shall be handled. This is | |
318 | equivalent to the <option>--resolv-conf=</option> command line switch, and takes the same argument. See | |
319 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for | |
320 | details.</para></listitem> | |
321 | </varlistentry> | |
4e1d6aa9 | 322 | |
1688841f LP |
323 | <varlistentry> |
324 | <term><varname>Timezone=</varname></term> | |
325 | ||
326 | <listitem><para>Configures how <filename>/etc/localtime</filename> in the container shall be handled. This is | |
bbe27ae4 | 327 | equivalent to the <option>--timezone=</option> command line switch, and takes the same argument. See |
1688841f LP |
328 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for |
329 | details.</para></listitem> | |
330 | </varlistentry> | |
331 | ||
4e1d6aa9 LP |
332 | <varlistentry> |
333 | <term><varname>LinkJournal=</varname></term> | |
334 | ||
335 | <listitem><para>Configures how to link host and container journal setups. This is equivalent to the | |
336 | <option>--link-journal=</option> command line switch, and takes the same parameter. See | |
337 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for | |
338 | details.</para></listitem> | |
339 | </varlistentry> | |
960e4569 | 340 | |
f757855e LP |
341 | </variablelist> |
342 | </refsect1> | |
343 | ||
344 | <refsect1> | |
345 | <title>[Files] Section Options</title> | |
346 | ||
347 | <para>Settings files may include a <literal>[Files]</literal> | |
348 | section, which carries various parameters configuring the file | |
349 | system of the container:</para> | |
350 | ||
37dac218 | 351 | <variablelist class='nspawn-directives'> |
f757855e LP |
352 | |
353 | <varlistentry> | |
354 | <term><varname>ReadOnly=</varname></term> | |
355 | ||
a8eaaee7 | 356 | <listitem><para>Takes a boolean argument, which defaults to off. If |
b938cb90 | 357 | specified, the container will be run with a read-only file |
f757855e LP |
358 | system. This setting corresponds to the |
359 | <option>--read-only</option> command line | |
360 | switch.</para></listitem> | |
361 | </varlistentry> | |
362 | ||
363 | <varlistentry> | |
364 | <term><varname>Volatile=</varname></term> | |
365 | ||
366 | <listitem><para>Takes a boolean argument, or the special value | |
367 | <literal>state</literal>. This configures whether to run the | |
368 | container with volatile state and/or configuration. This | |
369 | option is equivalent to <option>--volatile=</option>, see | |
370 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
371 | for details about the specific options | |
372 | supported.</para></listitem> | |
373 | </varlistentry> | |
374 | ||
375 | <varlistentry> | |
376 | <term><varname>Bind=</varname></term> | |
377 | <term><varname>BindReadOnly=</varname></term> | |
378 | ||
379 | <listitem><para>Adds a bind mount from the host into the | |
380 | container. Takes a single path, a pair of two paths separated | |
381 | by a colon, or a triplet of two paths plus an option string | |
382 | separated by colons. This option may be used multiple times to | |
383 | configure multiple bind mounts. This option is equivalent to | |
384 | the command line switches <option>--bind=</option> and | |
385 | <option>--bind-ro=</option>, see | |
386 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
387 | for details about the specific options supported. This setting | |
388 | is privileged (see above).</para></listitem> | |
389 | </varlistentry> | |
390 | ||
391 | <varlistentry> | |
392 | <term><varname>TemporaryFileSystem=</varname></term> | |
393 | ||
394 | <listitem><para>Adds a <literal>tmpfs</literal> mount to the | |
395 | container. Takes a path or a pair of path and option string, | |
4f76ef04 | 396 | separated by a colon. This option may be used multiple times to |
f757855e LP |
397 | configure multiple <literal>tmpfs</literal> mounts. This |
398 | option is equivalent to the command line switch | |
399 | <option>--tmpfs=</option>, see | |
400 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
401 | for details about the specific options supported. This setting | |
402 | is privileged (see above).</para></listitem> | |
403 | </varlistentry> | |
d2e5535f | 404 | |
3d6c3675 LP |
405 | <varlistentry> |
406 | <term><varname>Inaccessible=</varname></term> | |
407 | ||
408 | <listitem><para>Masks the specified file or directly in the container, by over-mounting it with an empty file | |
5238e957 | 409 | node of the same type with the most restrictive access mode. Takes a file system path as argument. This option |
3d6c3675 LP |
410 | may be used multiple times to mask multiple files or directories. This option is equivalent to the command line |
411 | switch <option>--inaccessible=</option>, see | |
412 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for details | |
413 | about the specific options supported. This setting is privileged (see above).</para></listitem> | |
414 | </varlistentry> | |
415 | ||
7b4318b6 LP |
416 | <varlistentry> |
417 | <term><varname>Overlay=</varname></term> | |
418 | <term><varname>OverlayReadOnly=</varname></term> | |
419 | ||
420 | <listitem><para>Adds an overlay mount point. Takes a colon-separated list of paths. This option may be used | |
421 | multiple times to configure multiple overlay mounts. This option is equivalent to the command line switches | |
422 | <option>--overlay=</option> and <option>--overlay-ro=</option>, see | |
423 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> for details | |
424 | about the specific options supported. This setting is privileged (see above).</para></listitem> | |
425 | </varlistentry> | |
426 | ||
d2e5535f LP |
427 | <varlistentry> |
428 | <term><varname>PrivateUsersChown=</varname></term> | |
429 | ||
430 | <listitem><para>Configures whether the ownership of the files and directories in the container tree shall be | |
431 | adjusted to the UID/GID range used, if necessary and user namespacing is enabled. This is equivalent to the | |
432 | <option>--private-users-chown</option> command line switch. This option is privileged (see | |
433 | above). </para></listitem> | |
434 | </varlistentry> | |
435 | ||
f757855e LP |
436 | </variablelist> |
437 | </refsect1> | |
438 | ||
439 | <refsect1> | |
440 | <title>[Network] Section Options</title> | |
441 | ||
442 | <para>Settings files may include a <literal>[Network]</literal> | |
443 | section, which carries various parameters configuring the network | |
444 | connectivity of the container:</para> | |
445 | ||
37dac218 | 446 | <variablelist class='nspawn-directives'> |
f757855e LP |
447 | |
448 | <varlistentry> | |
449 | <term><varname>Private=</varname></term> | |
450 | ||
a8eaaee7 | 451 | <listitem><para>Takes a boolean argument, which defaults to off. If |
b938cb90 | 452 | enabled, the container will run in its own network namespace |
f757855e LP |
453 | and not share network interfaces and configuration with the |
454 | host. This setting corresponds to the | |
455 | <option>--private-network</option> command line | |
456 | switch.</para></listitem> | |
457 | </varlistentry> | |
458 | ||
459 | <varlistentry> | |
460 | <term><varname>VirtualEthernet=</varname></term> | |
461 | ||
b09c0bba LP |
462 | <listitem><para>Takes a boolean argument. Configures whether to create a virtual Ethernet connection |
463 | (<literal>veth</literal>) between host and the container. This setting implies | |
464 | <varname>Private=yes</varname>. This setting corresponds to the <option>--network-veth</option> command line | |
465 | switch. This option is privileged (see above). This option is the default if the | |
466 | <filename>systemd-nspawn@.service</filename> template unit file is used.</para></listitem> | |
f757855e LP |
467 | </varlistentry> |
468 | ||
f6d6bad1 LP |
469 | <varlistentry> |
470 | <term><varname>VirtualEthernetExtra=</varname></term> | |
471 | ||
60e16d20 LP |
472 | <listitem><para>Takes a colon-separated pair of interface names. Configures an additional virtual |
473 | Ethernet connection (<literal>veth</literal>) between host and the container. The first specified | |
474 | name is the interface name on the host, the second the interface name in the container. The latter | |
475 | may be omitted in which case it is set to the same name as the host side interface. This setting | |
476 | implies <varname>Private=yes</varname>. This setting corresponds to the | |
477 | <option>--network-veth-extra=</option> command line switch, and maybe be used multiple times. It is | |
478 | independent of <varname>VirtualEthernet=</varname>. Note that this option is unrelated to the | |
479 | <varname>Bridge=</varname> setting below, and thus any connections created this way are not | |
480 | automatically added to any bridge device on the host side. This option is privileged (see | |
481 | above).</para></listitem> | |
f6d6bad1 LP |
482 | </varlistentry> |
483 | ||
f757855e LP |
484 | <varlistentry> |
485 | <term><varname>Interface=</varname></term> | |
486 | ||
b938cb90 | 487 | <listitem><para>Takes a space-separated list of interfaces to |
f757855e LP |
488 | add to the container. This option corresponds to the |
489 | <option>--network-interface=</option> command line switch and | |
490 | implies <varname>Private=yes</varname>. This option is | |
491 | privileged (see above).</para></listitem> | |
492 | </varlistentry> | |
493 | ||
494 | <varlistentry> | |
495 | <term><varname>MACVLAN=</varname></term> | |
496 | <term><varname>IPVLAN=</varname></term> | |
497 | ||
b938cb90 | 498 | <listitem><para>Takes a space-separated list of interfaces to |
f757855e LP |
499 | add MACLVAN or IPVLAN interfaces to, which are then added to |
500 | the container. These options correspond to the | |
501 | <option>--network-macvlan=</option> and | |
502 | <option>--network-ipvlan=</option> command line switches and | |
503 | imply <varname>Private=yes</varname>. These options are | |
504 | privileged (see above).</para></listitem> | |
505 | </varlistentry> | |
506 | ||
507 | <varlistentry> | |
508 | <term><varname>Bridge=</varname></term> | |
509 | ||
510 | <listitem><para>Takes an interface name. This setting implies | |
511 | <varname>VirtualEthernet=yes</varname> and | |
512 | <varname>Private=yes</varname> and has the effect that the | |
513 | host side of the created virtual Ethernet link is connected to | |
514 | the specified bridge interface. This option corresponds to the | |
515 | <option>--network-bridge=</option> command line switch. This | |
516 | option is privileged (see above).</para></listitem> | |
517 | </varlistentry> | |
518 | ||
938d2579 LP |
519 | <varlistentry> |
520 | <term><varname>Zone=</varname></term> | |
521 | ||
522 | <listitem><para>Takes a network zone name. This setting implies <varname>VirtualEthernet=yes</varname> and | |
523 | <varname>Private=yes</varname> and has the effect that the host side of the created virtual Ethernet link is | |
524 | connected to an automatically managed bridge interface named after the passed argument, prefixed with | |
525 | <literal>vz-</literal>. This option corresponds to the <option>--network-zone=</option> command line | |
526 | switch. This option is privileged (see above).</para></listitem> | |
527 | </varlistentry> | |
528 | ||
f757855e LP |
529 | <varlistentry> |
530 | <term><varname>Port=</varname></term> | |
531 | ||
532 | <listitem><para>Exposes a TCP or UDP port of the container on | |
533 | the host. This option corresponds to the | |
534 | <option>--port=</option> command line switch, see | |
535 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
536 | for the precise syntax of the argument this option takes. This | |
537 | option is privileged (see above).</para></listitem> | |
538 | </varlistentry> | |
539 | </variablelist> | |
540 | </refsect1> | |
541 | ||
542 | <refsect1> | |
543 | <title>See Also</title> | |
544 | <para> | |
545 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
546 | <citerefentry><refentrytitle>systemd-nspawn</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
547 | <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry> | |
548 | </para> | |
549 | </refsect1> | |
550 | ||
551 | </refentry> |