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514094f9 | 1 | <?xml version='1.0'?> |
d868475a | 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 | <!-- | |
572eb058 | 6 | SPDX-License-Identifier: LGPL-2.1+ |
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7 | --> |
8 | ||
9 | <refentry id="systemd.scope"> | |
10 | <refentryinfo> | |
11 | <title>systemd.scope</title> | |
12 | <productname>systemd</productname> | |
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13 | </refentryinfo> |
14 | ||
15 | <refmeta> | |
16 | <refentrytitle>systemd.scope</refentrytitle> | |
17 | <manvolnum>5</manvolnum> | |
18 | </refmeta> | |
19 | ||
20 | <refnamediv> | |
21 | <refname>systemd.scope</refname> | |
22 | <refpurpose>Scope unit configuration</refpurpose> | |
23 | </refnamediv> | |
24 | ||
25 | <refsynopsisdiv> | |
26 | <para><filename><replaceable>scope</replaceable>.scope</filename></para> | |
27 | </refsynopsisdiv> | |
28 | ||
29 | <refsect1> | |
30 | <title>Description</title> | |
31 | ||
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32 | <para>Scope units are not configured via unit configuration files, |
33 | but are only created programmatically using the bus interfaces of | |
34 | systemd. They are named similar to filenames. A unit whose name | |
35 | ends in <literal>.scope</literal> refers to a scope unit. Scopes | |
fbce1139 | 36 | units manage a set of system processes. Unlike service units, scope |
9365b048 LP |
37 | units manage externally created processes, and do not fork off |
38 | processes on its own.</para> | |
d868475a | 39 | |
9365b048 | 40 | <para>The main purpose of scope units is grouping worker processes |
847ae0ae | 41 | of a system service for organization and for managing resources.</para> |
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42 | |
43 | <para><command>systemd-run <option>--scope</option></command> may | |
44 | be used to easily launch a command in a new scope unit from the | |
45 | command line.</para> | |
d868475a | 46 | |
ea021cc3 | 47 | <para>See the <ulink |
28a0ad81 | 48 | url="https://www.freedesktop.org/wiki/Software/systemd/ControlGroupInterface/">New |
72f4d966 | 49 | Control Group Interfaces</ulink> for an introduction on how to make |
ea021cc3 | 50 | use of scope units from programs.</para> |
c129bd5d LP |
51 | </refsect1> |
52 | ||
53 | <refsect1> | |
aed5cb03 ZJS |
54 | <title>Automatic Dependencies</title> |
55 | ||
56 | <refsect2> | |
57 | <title>Implicit Dependencies</title> | |
58 | ||
59 | <para>Implicit dependencies may be added as result of | |
60 | resource control parameters as documented in | |
61 | <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> | |
62 | </refsect2> | |
63 | ||
64 | <refsect2> | |
65 | <title>Default Dependencies</title> | |
66 | ||
67 | <para>The following dependencies are added unless | |
68 | <varname>DefaultDependencies=no</varname> is set:</para> | |
69 | ||
70 | <itemizedlist> | |
71 | <listitem><para>Scope units will automatically have dependencies of | |
72 | type <varname>Conflicts=</varname> and | |
73 | <varname>Before=</varname> on | |
74 | <filename>shutdown.target</filename>. These ensure | |
75 | that scope units are removed prior to system | |
76 | shutdown. Only scope units involved with early boot or | |
77 | late system shutdown should disable | |
78 | <varname>DefaultDependencies=</varname> option.</para></listitem> | |
79 | </itemizedlist> | |
80 | </refsect2> | |
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81 | </refsect1> |
82 | ||
83 | <refsect1> | |
84 | <title>See Also</title> | |
85 | <para> | |
86 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
87 | <citerefentry><refentrytitle>systemd-run</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
88 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, | |
3fde5f30 | 89 | <citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
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90 | <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
91 | <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>. | |
92 | </para> | |
93 | </refsect1> | |
94 | ||
95 | </refentry> |