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f3e219a2 | 2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" |
12b42c76 | 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
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4 | |
5 | <!-- | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
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11 | under the terms of the GNU Lesser General Public License as published by |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
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13 | (at your option) any later version. |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 18 | Lesser General Public License for more details. |
f3e219a2 | 19 | |
5430f7f2 | 20 | You should have received a copy of the GNU Lesser General Public License |
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21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
22 | --> | |
23 | ||
1b907b5c | 24 | <refentry id="systemd-system.conf" |
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25 | xmlns:xi="http://www.w3.org/2001/XInclude"> |
26 | <refentryinfo> | |
27 | <title>systemd-system.conf</title> | |
28 | <productname>systemd</productname> | |
29 | ||
30 | <authorgroup> | |
31 | <author> | |
32 | <contrib>Developer</contrib> | |
33 | <firstname>Lennart</firstname> | |
34 | <surname>Poettering</surname> | |
35 | <email>lennart@poettering.net</email> | |
36 | </author> | |
37 | </authorgroup> | |
38 | </refentryinfo> | |
39 | ||
40 | <refmeta> | |
41 | <refentrytitle>systemd-system.conf</refentrytitle> | |
42 | <manvolnum>5</manvolnum> | |
43 | </refmeta> | |
44 | ||
45 | <refnamediv> | |
46 | <refname>systemd-system.conf</refname> | |
47 | <refname>system.conf.d</refname> | |
48 | <refname>systemd-user.conf</refname> | |
49 | <refname>user.conf.d</refname> | |
50 | <refpurpose>System and session service manager configuration files</refpurpose> | |
51 | </refnamediv> | |
52 | ||
53 | <refsynopsisdiv> | |
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54 | <para><filename>/etc/systemd/system.conf</filename>, |
55 | <filename>/etc/systemd/system.conf.d/*.conf</filename>, | |
56 | <filename>/run/systemd/system.conf.d/*.conf</filename>, | |
57 | <filename>/usr/lib/systemd/system.conf.d/*.conf</filename></para> | |
58 | <para><filename>/etc/systemd/user.conf</filename>, | |
59 | <filename>/etc/systemd/user.conf.d/*.conf</filename>, | |
60 | <filename>/run/systemd/user.conf.d/*.conf</filename>, | |
61 | <filename>/usr/lib/systemd/user.conf.d/*.conf</filename></para> | |
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62 | </refsynopsisdiv> |
63 | ||
64 | <refsect1> | |
65 | <title>Description</title> | |
66 | ||
67 | <para>When run as a system instance, systemd interprets the | |
68 | configuration file <filename>system.conf</filename> and the files | |
69 | in <filename>system.conf.d</filename> directories; when run as a | |
70 | user instance, systemd interprets the configuration file | |
71 | <filename>user.conf</filename> and the files in | |
72 | <filename>user.conf.d</filename> directories. These configuration | |
73 | files contain a few settings controlling basic manager | |
74 | operations.</para> | |
75 | </refsect1> | |
76 | ||
e93549ef | 77 | <xi:include href="standard-conf.xml" xpointer="main-conf" /> |
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78 | |
79 | <refsect1> | |
80 | <title>Options</title> | |
81 | ||
82 | <para>All options are configured in the | |
83 | <literal>[Manager]</literal> section:</para> | |
84 | ||
85 | <variablelist class='systemd-directives'> | |
86 | ||
87 | <varlistentry> | |
88 | <term><varname>LogLevel=</varname></term> | |
89 | <term><varname>LogTarget=</varname></term> | |
90 | <term><varname>LogColor=</varname></term> | |
91 | <term><varname>LogLocation=</varname></term> | |
92 | <term><varname>DumpCore=yes</varname></term> | |
93 | <term><varname>CrashShell=no</varname></term> | |
94 | <term><varname>ShowStatus=yes</varname></term> | |
95 | <term><varname>CrashChVT=1</varname></term> | |
96 | <term><varname>DefaultStandardOutput=journal</varname></term> | |
97 | <term><varname>DefaultStandardError=inherit</varname></term> | |
98 | ||
99 | <listitem><para>Configures various parameters of basic manager | |
100 | operation. These options may be overridden by the respective | |
101 | command line arguments. See | |
102 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry> | |
103 | for details about these command line | |
104 | arguments.</para></listitem> | |
105 | </varlistentry> | |
106 | ||
107 | <varlistentry> | |
108 | <term><varname>CPUAffinity=</varname></term> | |
109 | ||
110 | <listitem><para>Configures the initial CPU affinity for the | |
111 | init process. Takes a space-separated list of CPU | |
112 | indices.</para></listitem> | |
113 | </varlistentry> | |
114 | ||
115 | <varlistentry> | |
116 | <term><varname>JoinControllers=cpu,cpuacct net_cls,netprio</varname></term> | |
117 | ||
118 | <listitem><para>Configures controllers that shall be mounted | |
119 | in a single hierarchy. By default, systemd will mount all | |
120 | controllers which are enabled in the kernel in individual | |
121 | hierarchies, with the exception of those listed in this | |
122 | setting. Takes a space-separated list of comma-separated | |
123 | controller names, in order to allow multiple joined | |
124 | hierarchies. Defaults to 'cpu,cpuacct'. Pass an empty string | |
125 | to ensure that systemd mounts all controllers in separate | |
126 | hierarchies.</para> | |
127 | ||
128 | <para>Note that this option is only applied once, at very | |
129 | early boot. If you use an initial RAM disk (initrd) that uses | |
130 | systemd, it might hence be necessary to rebuild the initrd if | |
131 | this option is changed, and make sure the new configuration | |
132 | file is included in it. Otherwise, the initrd might mount the | |
133 | controller hierarchies in a different configuration than | |
134 | intended, and the main system cannot remount them | |
135 | anymore.</para></listitem> | |
136 | </varlistentry> | |
137 | ||
138 | <varlistentry> | |
139 | <term><varname>RuntimeWatchdogSec=</varname></term> | |
140 | <term><varname>ShutdownWatchdogSec=</varname></term> | |
141 | ||
142 | <listitem><para>Configure the hardware watchdog at runtime and | |
143 | at reboot. Takes a timeout value in seconds (or in other time | |
144 | units if suffixed with <literal>ms</literal>, | |
145 | <literal>min</literal>, <literal>h</literal>, | |
146 | <literal>d</literal>, <literal>w</literal>). If | |
147 | <varname>RuntimeWatchdogSec=</varname> is set to a non-zero | |
148 | value, the watchdog hardware | |
149 | (<filename>/dev/watchdog</filename>) will be programmed to | |
150 | automatically reboot the system if it is not contacted within | |
151 | the specified timeout interval. The system manager will ensure | |
152 | to contact it at least once in half the specified timeout | |
153 | interval. This feature requires a hardware watchdog device to | |
154 | be present, as it is commonly the case in embedded and server | |
155 | systems. Not all hardware watchdogs allow configuration of the | |
156 | reboot timeout, in which case the closest available timeout is | |
157 | picked. <varname>ShutdownWatchdogSec=</varname> may be used to | |
158 | configure the hardware watchdog when the system is asked to | |
159 | reboot. It works as a safety net to ensure that the reboot | |
160 | takes place even if a clean reboot attempt times out. By | |
161 | default <varname>RuntimeWatchdogSec=</varname> defaults to 0 | |
162 | (off), and <varname>ShutdownWatchdogSec=</varname> to 10min. | |
163 | These settings have no effect if a hardware watchdog is not | |
164 | available.</para></listitem> | |
165 | </varlistentry> | |
166 | ||
167 | <varlistentry> | |
168 | <term><varname>CapabilityBoundingSet=</varname></term> | |
169 | ||
170 | <listitem><para>Controls which capabilities to include in the | |
171 | capability bounding set for PID 1 and its children. See | |
172 | <citerefentry project='man-pages'><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry> | |
173 | for details. Takes a whitespace-separated list of capability | |
174 | names as read by | |
3ba3a79d | 175 | <citerefentry project='mankier'><refentrytitle>cap_from_name</refentrytitle><manvolnum>3</manvolnum></citerefentry>. |
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176 | Capabilities listed will be included in the bounding set, all |
177 | others are removed. If the list of capabilities is prefixed | |
178 | with ~, all but the listed capabilities will be included, the | |
179 | effect of the assignment inverted. Note that this option also | |
180 | affects the respective capabilities in the effective, | |
181 | permitted and inheritable capability sets. The capability | |
182 | bounding set may also be individually configured for units | |
183 | using the <varname>CapabilityBoundingSet=</varname> directive | |
184 | for units, but note that capabilities dropped for PID 1 cannot | |
185 | be regained in individual units, they are lost for | |
186 | good.</para></listitem> | |
187 | </varlistentry> | |
188 | ||
189 | <varlistentry> | |
190 | <term><varname>SystemCallArchitectures=</varname></term> | |
191 | ||
192 | <listitem><para>Takes a space-separated list of architecture | |
193 | identifiers. Selects from which architectures system calls may | |
194 | be invoked on this system. This may be used as an effective | |
195 | way to disable invocation of non-native binaries system-wide, | |
196 | for example to prohibit execution of 32-bit x86 binaries on | |
197 | 64-bit x86-64 systems. This option operates system-wide, and | |
198 | acts similar to the | |
199 | <varname>SystemCallArchitectures=</varname> setting of unit | |
200 | files, see | |
201 | <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry> | |
202 | for details. This setting defaults to the empty list, in which | |
203 | case no filtering of system calls based on architecture is | |
204 | applied. Known architecture identifiers are | |
205 | <literal>x86</literal>, <literal>x86-64</literal>, | |
206 | <literal>x32</literal>, <literal>arm</literal> and the special | |
207 | identifier <literal>native</literal>. The latter implicitly | |
208 | maps to the native architecture of the system (or more | |
209 | specifically, the architecture the system manager was compiled | |
210 | for). Set this setting to <literal>native</literal> to | |
211 | prohibit execution of any non-native binaries. When a binary | |
212 | executes a system call of an architecture that is not listed | |
213 | in this setting, it will be immediately terminated with the | |
214 | SIGSYS signal.</para></listitem> | |
215 | </varlistentry> | |
216 | ||
217 | <varlistentry> | |
218 | <term><varname>TimerSlackNSec=</varname></term> | |
219 | ||
220 | <listitem><para>Sets the timer slack in nanoseconds for PID 1, | |
221 | which is inherited by all executed processes, unless | |
222 | overridden individually, for example with the | |
223 | <varname>TimerSlackNSec=</varname> setting in service units | |
224 | (for details see | |
225 | <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>). | |
226 | The timer slack controls the accuracy of wake-ups triggered by | |
227 | system timers. See | |
228 | <citerefentry><refentrytitle>prctl</refentrytitle><manvolnum>2</manvolnum></citerefentry> | |
229 | for more information. Note that in contrast to most other time | |
230 | span definitions this parameter takes an integer value in | |
231 | nano-seconds if no unit is specified. The usual time units are | |
232 | understood too.</para></listitem> | |
233 | </varlistentry> | |
234 | ||
235 | <varlistentry> | |
236 | <term><varname>DefaultTimerAccuracySec=</varname></term> | |
237 | ||
238 | <listitem><para>Sets the default accuracy of timer units. This | |
239 | controls the global default for the | |
240 | <varname>AccuracySec=</varname> setting of timer units, see | |
241 | <citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry> | |
242 | for details. <varname>AccuracySec=</varname> set in individual | |
243 | units override the global default for the specific unit. | |
244 | Defaults to 1min. Note that the accuracy of timer units is | |
245 | also affected by the configured timer slack for PID 1, see | |
246 | <varname>TimerSlackNSec=</varname> above.</para></listitem> | |
247 | </varlistentry> | |
248 | ||
249 | <varlistentry> | |
250 | <term><varname>DefaultTimeoutStartSec=</varname></term> | |
251 | <term><varname>DefaultTimeoutStopSec=</varname></term> | |
252 | <term><varname>DefaultRestartSec=</varname></term> | |
253 | ||
254 | <listitem><para>Configures the default timeouts for starting | |
255 | and stopping of units, as well as the default time to sleep | |
256 | between automatic restarts of units, as configured per-unit in | |
257 | <varname>TimeoutStartSec=</varname>, | |
258 | <varname>TimeoutStopSec=</varname> and | |
259 | <varname>RestartSec=</varname> (for services, see | |
260 | <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry> | |
261 | for details on the per-unit settings). For non-service units, | |
262 | <varname>DefaultTimeoutStartSec=</varname> sets the default | |
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263 | <varname>TimeoutSec=</varname> |
264 | value. <varname>DefaultTimeoutStartSec=</varname> and | |
265 | <varname>DefaultTimeoutStopSec=</varname> default to | |
266 | 90s. <varname>DefaultRestartSec=</varname> defaults to | |
267 | 100ms.</para></listitem> | |
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268 | </varlistentry> |
269 | ||
270 | <varlistentry> | |
271 | <term><varname>DefaultStartLimitInterval=</varname></term> | |
272 | <term><varname>DefaultStartLimitBurst=</varname></term> | |
273 | ||
274 | <listitem><para>Configure the default unit start rate | |
275 | limiting, as configured per-service by | |
276 | <varname>StartLimitInterval=</varname> and | |
277 | <varname>StartLimitBurst=</varname>. See | |
278 | <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry> | |
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279 | for details on the per-service settings. |
280 | <varname>DefaultStartLimitInterval=</varname> defaults to | |
281 | 10s. <varname>DefaultStartLimitBurst=</varname> defaults to | |
282 | 5.</para></listitem> | |
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283 | </varlistentry> |
284 | ||
285 | <varlistentry> | |
286 | <term><varname>DefaultEnvironment=</varname></term> | |
287 | ||
288 | <listitem><para>Sets manager environment variables passed to | |
289 | all executed processes. Takes a space-separated list of | |
290 | variable assignments. See | |
291 | <citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry> | |
292 | for details about environment variables.</para> | |
293 | ||
294 | <para>Example: | |
295 | ||
296 | <programlisting>DefaultEnvironment="VAR1=word1 word2" VAR2=word3 "VAR3=word 5 6"</programlisting> | |
297 | ||
298 | Sets three variables | |
299 | <literal>VAR1</literal>, | |
300 | <literal>VAR2</literal>, | |
301 | <literal>VAR3</literal>.</para></listitem> | |
302 | </varlistentry> | |
303 | ||
304 | <varlistentry> | |
305 | <term><varname>DefaultCPUAccounting=</varname></term> | |
306 | <term><varname>DefaultBlockIOAccounting=</varname></term> | |
307 | <term><varname>DefaultMemoryAccounting=</varname></term> | |
03a7b521 | 308 | <term><varname>DefaultTasksAccounting=</varname></term> |
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309 | |
310 | <listitem><para>Configure the default resource accounting | |
311 | settings, as configured per-unit by | |
312 | <varname>CPUAccounting=</varname>, | |
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313 | <varname>BlockIOAccounting=</varname>, |
314 | <varname>MemoryAccounting=</varname> and | |
315 | <varname>TasksAccounting=</varname>. See | |
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316 | <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry> |
317 | for details on the per-unit settings.</para></listitem> | |
318 | </varlistentry> | |
319 | ||
320 | <varlistentry> | |
321 | <term><varname>DefaultLimitCPU=</varname></term> | |
322 | <term><varname>DefaultLimitFSIZE=</varname></term> | |
323 | <term><varname>DefaultLimitDATA=</varname></term> | |
324 | <term><varname>DefaultLimitSTACK=</varname></term> | |
325 | <term><varname>DefaultLimitCORE=</varname></term> | |
326 | <term><varname>DefaultLimitRSS=</varname></term> | |
327 | <term><varname>DefaultLimitNOFILE=</varname></term> | |
328 | <term><varname>DefaultLimitAS=</varname></term> | |
329 | <term><varname>DefaultLimitNPROC=</varname></term> | |
330 | <term><varname>DefaultLimitMEMLOCK=</varname></term> | |
331 | <term><varname>DefaultLimitLOCKS=</varname></term> | |
332 | <term><varname>DefaultLimitSIGPENDING=</varname></term> | |
333 | <term><varname>DefaultLimitMSGQUEUE=</varname></term> | |
334 | <term><varname>DefaultLimitNICE=</varname></term> | |
335 | <term><varname>DefaultLimitRTPRIO=</varname></term> | |
336 | <term><varname>DefaultLimitRTTIME=</varname></term> | |
337 | ||
338 | <listitem><para>These settings control various default | |
339 | resource limits for units. See | |
340 | <citerefentry><refentrytitle>setrlimit</refentrytitle><manvolnum>2</manvolnum></citerefentry> | |
341 | for details. Use the string <varname>infinity</varname> to | |
342 | configure no limit on a specific resource. These settings may | |
343 | be overridden in individual units using the corresponding | |
344 | LimitXXX= directives. Note that these resource limits are only | |
345 | defaults for units, they are not applied to PID 1 | |
346 | itself.</para></listitem> | |
347 | </varlistentry> | |
348 | </variablelist> | |
349 | </refsect1> | |
350 | ||
351 | <refsect1> | |
352 | <title>See Also</title> | |
353 | <para> | |
354 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
355 | <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>, | |
356 | <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
357 | <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
358 | <citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>, | |
359 | <citerefentry project='man-pages'><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry> | |
360 | </para> | |
361 | </refsect1> | |
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362 | |
363 | </refentry> |