mirror of
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5aded36978
It is annoying when we have dead links on fd.o. Add project='man-pages|die-net|archlinux' to <citerefentry>-ies. In generated html, add external links to http://man7.org/linux/man-pages/man, http://linux.die.net/man/, https://www.archlinux.org/. By default, pages in sections 2 and 4 go to man7, since Michael Kerrisk is the autorative source on kernel related stuff. The rest of links goes to linux.die.net, because they have the manpages. Except for the pacman stuff, since it seems to be only available from archlinux.org. Poor gummiboot gets no link, because gummitboot(8) ain't to be found on the net. According to common wisdom, that would mean that it does not exist. But I have seen Kay using it, so I know it does, and deserves to be found. Can somebody be nice and put it up somewhere?
430 lines
24 KiB
XML
430 lines
24 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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-->
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<refentry id="systemd-system.conf">
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<refentryinfo>
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<title>systemd-system.conf</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-system.conf</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-system.conf</refname>
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<refname>systemd-user.conf</refname>
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<refpurpose>System and session service manager configuration file</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/etc/systemd/system.conf</filename></para>
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<para><filename>/etc/systemd/user.conf</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>When run as system instance systemd reads the
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configuration file <filename>system.conf</filename>,
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otherwise <filename>user.conf</filename>. These
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configuration files contain a few settings controlling
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basic manager operations.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>All options are configured in the
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<literal>[Manager]</literal> section:</para>
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<variablelist class='systemd-directives'>
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<varlistentry>
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<term><varname>LogLevel=</varname></term>
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<term><varname>LogTarget=</varname></term>
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<term><varname>LogColor=</varname></term>
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<term><varname>LogLocation=</varname></term>
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<term><varname>DumpCore=yes</varname></term>
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<term><varname>CrashShell=no</varname></term>
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<term><varname>ShowStatus=yes</varname></term>
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<term><varname>CrashChVT=1</varname></term>
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<term><varname>DefaultStandardOutput=journal</varname></term>
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<term><varname>DefaultStandardError=inherit</varname></term>
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<listitem><para>Configures various
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parameters of basic manager
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operation. These options may be
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overridden by the respective command
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line arguments. See
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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for details about these command line
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arguments.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>CPUAffinity=</varname></term>
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<listitem><para>Configures the initial
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CPU affinity for the init
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process. Takes a space-separated list
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of CPU indices.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>JoinControllers=cpu,cpuacct net_cls,netprio</varname></term>
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<listitem><para>Configures controllers
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that shall be mounted in a single
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hierarchy. By default, systemd will
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mount all controllers which are
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enabled in the kernel in individual
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hierarchies, with the exception of
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those listed in this setting. Takes a
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space-separated list of comma-separated
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controller names, in order
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to allow multiple joined
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hierarchies. Defaults to
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'cpu,cpuacct'. Pass an empty string to
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ensure that systemd mounts all
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controllers in separate
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hierarchies.</para>
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<para>Note that this option is only
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applied once, at very early boot. If
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you use an initial RAM disk (initrd)
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that uses systemd, it might hence be
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necessary to rebuild the initrd if
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this option is changed, and make sure
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the new configuration file is included
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in it. Otherwise, the initrd might
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mount the controller hierarchies in a
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different configuration than intended,
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and the main system cannot remount
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them anymore.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>RuntimeWatchdogSec=</varname></term>
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<term><varname>ShutdownWatchdogSec=</varname></term>
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<listitem><para>Configure the hardware
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watchdog at runtime and at
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reboot. Takes a timeout value in
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seconds (or in other time units if
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suffixed with <literal>ms</literal>,
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<literal>min</literal>,
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<literal>h</literal>,
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<literal>d</literal>,
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<literal>w</literal>). If
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<varname>RuntimeWatchdogSec=</varname>
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is set to a non-zero value, the
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watchdog hardware
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(<filename>/dev/watchdog</filename>)
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will be programmed to automatically
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reboot the system if it is not
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contacted within the specified timeout
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interval. The system manager will
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ensure to contact it at least once in
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half the specified timeout
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interval. This feature requires a
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hardware watchdog device to be
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present, as it is commonly the case in
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embedded and server systems. Not all
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hardware watchdogs allow configuration
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of the reboot timeout, in which case
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the closest available timeout is
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picked. <varname>ShutdownWatchdogSec=</varname>
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may be used to configure the hardware
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watchdog when the system is asked to
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reboot. It works as a safety net to
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ensure that the reboot takes place
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even if a clean reboot attempt times
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out. By default
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<varname>RuntimeWatchdogSec=</varname>
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defaults to 0 (off), and
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<varname>ShutdownWatchdogSec=</varname>
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to 10min. These settings have no
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effect if a hardware watchdog is not
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available.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>CapabilityBoundingSet=</varname></term>
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<listitem><para>Controls which
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capabilities to include in the
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capability bounding set for PID 1 and
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its children. See
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<citerefentry project='man-pages'><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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for details. Takes a whitespace-separated
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list of capability names as read by
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<citerefentry><refentrytitle>cap_from_name</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
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Capabilities listed will be included
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in the bounding set, all others are
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removed. If the list of capabilities
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is prefixed with ~, all but the listed
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capabilities will be included, the
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effect of the assignment
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inverted. Note that this option also
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affects the respective capabilities in
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the effective, permitted and
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inheritable capability sets. The
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capability bounding set may also be
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individually configured for units
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using the
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<varname>CapabilityBoundingSet=</varname>
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directive for units, but note that
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capabilities dropped for PID 1 cannot
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be regained in individual units, they
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are lost for good.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>SystemCallArchitectures=</varname></term>
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<listitem><para>Takes a
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space-separated list of architecture
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identifiers. Selects from which
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architectures system calls may be
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invoked on this system. This may be
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used as an effective way to disable
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invocation of non-native binaries
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system-wide, for example to prohibit
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execution of 32-bit x86 binaries on
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64-bit x86-64 systems. This option
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operates system-wide, and acts
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similar to the
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<varname>SystemCallArchitectures=</varname>
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setting of unit files, see
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for details. This setting defaults to
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the empty list, in which case no
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filtering of system calls based on
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architecture is applied. Known
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architecture identifiers are
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<literal>x86</literal>,
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<literal>x86-64</literal>,
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<literal>x32</literal>,
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<literal>arm</literal> and the special
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identifier
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<literal>native</literal>. The latter
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implicitly maps to the native
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architecture of the system (or more
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specifically, the architecture the
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system manager was compiled for). Set
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this setting to
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<literal>native</literal> to prohibit
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execution of any non-native
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binaries. When a binary executes a
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system call of an architecture that is
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not listed in this setting, it will be
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immediately terminated with the SIGSYS
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signal.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>TimerSlackNSec=</varname></term>
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<listitem><para>Sets the timer slack
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in nanoseconds for PID 1, which is
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inherited by all executed processes,
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unless overridden individually, for
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example with the
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<varname>TimerSlackNSec=</varname>
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setting in service units (for details
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see
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>). The
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timer slack controls the accuracy of
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wake-ups triggered by system
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timers. See
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<citerefentry><refentrytitle>prctl</refentrytitle><manvolnum>2</manvolnum></citerefentry>
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for more information. Note that in
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contrast to most other time span
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definitions this parameter takes an
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integer value in nano-seconds if no
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unit is specified. The usual time
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units are understood
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too.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DefaultTimerAccuracySec=</varname></term>
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<listitem><para>Sets the default
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accuracy of timer units. This controls
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the global default for the
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<varname>AccuracySec=</varname>
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setting of timer units, see
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<citerefentry><refentrytitle>systemd.timer</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for
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details. <varname>AccuracySec=</varname>
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set in individual units override the
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global default for the specific
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unit. Defaults to 1min. Note that the
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accuracy of timer units is also
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affected by the configured timer slack
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for PID 1, see
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<varname>TimerSlackNSec=</varname>
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above.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DefaultTimeoutStartSec=</varname></term>
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<term><varname>DefaultTimeoutStopSec=</varname></term>
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<term><varname>DefaultRestartSec=</varname></term>
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<listitem><para>Configures the default
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timeouts for starting and stopping of
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units, as well as the default time to
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sleep between automatic restarts of
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units, as configured per-unit in
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<varname>TimeoutStartSec=</varname>,
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<varname>TimeoutStopSec=</varname> and
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<varname>RestartSec=</varname> (for
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services, see
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<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for details on the per-unit
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settings). For non-service units,
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<varname>DefaultTimeoutStartSec=</varname>
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sets the default
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<varname>TimeoutSec=</varname> value.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DefaultStartLimitInterval=</varname></term>
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<term><varname>DefaultStartLimitBurst=</varname></term>
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<listitem><para>Configure the default
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unit start rate limiting, as
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configured per-service by
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<varname>StartLimitInterval=</varname>
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and
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<varname>StartLimitBurst=</varname>. See
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<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for details on the per-service
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settings.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DefaultEnvironment=</varname></term>
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<listitem><para>Sets manager
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environment variables passed to all
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executed processes. Takes a
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space-separated list of variable
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assignments. See
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<citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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for details about environment
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variables.</para>
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<para>Example:
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<programlisting>DefaultEnvironment="VAR1=word1 word2" VAR2=word3 "VAR3=word 5 6"</programlisting>
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Sets three variables
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<literal>VAR1</literal>,
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<literal>VAR2</literal>,
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<literal>VAR3</literal>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DefaultCPUAccounting=</varname></term>
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<term><varname>DefaultBlockIOAccounting=</varname></term>
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<term><varname>DefaultMemoryAccounting=</varname></term>
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<listitem><para>Configure the default
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resource accounting settings, as
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configured per-unit by
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<varname>CPUAccounting=</varname>,
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<varname>BlockIOAccounting=</varname>
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and
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<varname>MemoryAccounting=</varname>. See
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<citerefentry><refentrytitle>systemd.resource-control</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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for details on the per-unit
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settings.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>DefaultLimitCPU=</varname></term>
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<term><varname>DefaultLimitFSIZE=</varname></term>
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<term><varname>DefaultLimitDATA=</varname></term>
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<term><varname>DefaultLimitSTACK=</varname></term>
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<term><varname>DefaultLimitCORE=</varname></term>
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<term><varname>DefaultLimitRSS=</varname></term>
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<term><varname>DefaultLimitNOFILE=</varname></term>
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<term><varname>DefaultLimitAS=</varname></term>
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<term><varname>DefaultLimitNPROC=</varname></term>
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<term><varname>DefaultLimitMEMLOCK=</varname></term>
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<term><varname>DefaultLimitLOCKS=</varname></term>
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<term><varname>DefaultLimitSIGPENDING=</varname></term>
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<term><varname>DefaultLimitMSGQUEUE=</varname></term>
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<term><varname>DefaultLimitNICE=</varname></term>
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<term><varname>DefaultLimitRTPRIO=</varname></term>
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<term><varname>DefaultLimitRTTIME=</varname></term>
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<listitem><para>These settings control
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various default resource limits for
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units. See
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<citerefentry><refentrytitle>setrlimit</refentrytitle><manvolnum>2</manvolnum></citerefentry>
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for details. Use the string
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<varname>infinity</varname> to
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configure no limit on a specific
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resource. These settings may be
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overridden in individual units
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using the corresponding LimitXXX=
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directives. Note that these resource
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limits are only defaults for units,
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they are not applied to PID 1
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itself.</para></listitem>
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</varlistentry>
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</variablelist>
|
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</refsect1>
|
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|
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<refsect1>
|
|
<title>See Also</title>
|
|
<para>
|
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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