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-<?xml version='1.0'?> <!--*-nxml-*-->
-<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
-
-<refentry id="systemd.conf">
- <refentryinfo>
- <title>systemd.conf</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>systemd.conf</refentrytitle>
- <manvolnum>5</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd.conf</refname>
- <refpurpose>System and service manager configuration file</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <para><filename>/etc/systemd/system.conf</filename></para>
- <para><filename>/etc/systemd/user.conf</filename></para>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para>When run as system instance systemd reads the
- configuration file <filename>system.conf</filename>,
- otherwise <filename>user.conf</filename>. These
- configuration files contain a few settings controlling
- basic manager operations.</para>
-
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <para>All options are configured in the
- <literal>[Manager]</literal> section:</para>
-
- <variablelist class='systemd-directives'>
-
- <varlistentry>
- <term><varname>LogLevel=</varname></term>
- <term><varname>LogTarget=</varname></term>
- <term><varname>LogColor=</varname></term>
- <term><varname>LogLocation=</varname></term>
- <term><varname>DumpCore=yes</varname></term>
- <term><varname>CrashShell=no</varname></term>
- <term><varname>ShowStatus=yes</varname></term>
- <term><varname>CrashChVT=1</varname></term>
- <term><varname>DefaultStandardOutput=journal</varname></term>
- <term><varname>DefaultStandardError=inherit</varname></term>
-
- <listitem><para>Configures various
- parameters of basic manager
- operation. These options may be
- overridden by the respective command
- line arguments. See
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- for details about these command line
- arguments.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>CPUAffinity=</varname></term>
-
- <listitem><para>Configures the initial
- CPU affinity for the init
- process. Takes a space-separated list
- of CPU indexes.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>DefaultControllers=cpu</varname></term>
-
- <listitem><para>Configures in which
- cgroup controller hierarchies to
- create per-service cgroups
- automatically, in addition to the
- name=systemd named hierarchy. Defaults
- to 'cpu'. Takes a space separated list
- of controller names. Pass an empty
- string to ensure that systemd does not
- touch any hierarchies but its
- own.</para>
-
- <para>Note that the default value of
- 'cpu' will make realtime scheduling
- unavailable to system services. See
- <ulink
- url="http://www.freedesktop.org/wiki/Software/systemd/MyServiceCantGetRealtime">My
- Service Can't Get Realtime!</ulink>
- for more
- information.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>JoinControllers=cpu,cpuacct,cpuset net_cls,netprio</varname></term>
-
- <listitem><para>Configures controllers
- that shall be mounted in a single
- hierarchy. By default systemd will
- mount all controllers which are
- enabled in the kernel in individual
- hierarchies, with the exception of
- those listed in this setting. Takes a
- space separated list of comma
- separated controller names, in order
- to allow multiple joined
- hierarchies. Defaults to
- 'cpu,cpuacct'. Pass an empty string to
- ensure that systemd mounts all
- controllers in separate
- hierarchies.</para>
-
- <para>Note that this option is only
- applied once, at very early boot. If
- you use an initial RAM disk (initrd)
- that uses systemd it might hence be
- necessary to rebuild the initrd if
- this option is changed, and make sure
- the new configuration file is included
- in it. Otherwise the initrd might
- mount the controller hierachies in a
- different configuration than intended,
- and the main system cannot remount
- them anymore.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>RuntimeWatchdogSec=</varname></term>
- <term><varname>ShutdownWatchdogSec=</varname></term>
-
- <listitem><para>Configure the hardware
- watchdog at runtime and at
- reboot. Takes a timeout value in
- seconds (or in other time units if
- suffixed with <literal>ms</literal>,
- <literal>min</literal>,
- <literal>h</literal>,
- <literal>d</literal>,
- <literal>w</literal>). If
- <varname>RuntimeWatchdogSec=</varname>
- is set to a non-zero value the
- watchdog hardware
- (<filename>/dev/watchdog</filename>)
- will be programmed to automatically
- reboot the system if it is not
- contacted within the specified timeout
- interval. The system manager will
- ensure to contact it at least once in
- half the specified timeout
- interval. This feature requires a
- hardware watchdog device to be
- present, as it is commonly the case in
- embedded and server systems. Not all
- hardware watchdogs allow configuration
- of the reboot timeout, in which case
- the closest available timeout is
- picked. <varname>ShutdownWatchdogSec=</varname>
- may be used to configure the hardware
- watchdog when the system is asked to
- reboot. It works as a safety net to
- ensure that the reboot takes place
- even if a clean reboot attempt times
- out. By default
- <varname>RuntimeWatchdogSec=</varname>
- defaults to 0 (off), and
- <varname>ShutdownWatchdogSec=</varname>
- to 10min. These settings have no
- effect if a hardware watchdog is not
- available.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>CapabilityBoundingSet=</varname></term>
-
- <listitem><para>Controls which
- capabilities to include in the
- capability bounding set for PID 1 and
- its children. See
- <citerefentry><refentrytitle>capabilities</refentrytitle><manvolnum>7</manvolnum></citerefentry>
- for details. Takes a whitespace
- separated list of capability names as
- read by
- <citerefentry><refentrytitle>cap_from_name</refentrytitle><manvolnum>3</manvolnum></citerefentry>.
- Capabilities listed will be included
- in the bounding set, all others are
- removed. If the list of capabilities
- is prefixed with ~ all but the listed
- capabilities will be included, the
- effect of the assignment
- inverted. Note that this option also
- affects the respective capabilities in
- the effective, permitted and
- inheritable capability sets. The
- capability bounding set may also be
- individually configured for units
- using the
- <varname>CapabilityBoundingSet=</varname>
- directive for units, but note that
- capabilities dropped for PID 1 cannot
- be regained in individual units, they
- are lost for good.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>TimerSlackNSec=</varname></term>
-
- <listitem><para>Sets the timer slack
- in nanoseconds for PID 1 which is then
- inherited to all executed processes,
- unless overridden individually, for
- example with the
- <varname>TimerSlackNSec=</varname>
- setting in service units (for details
- see
- <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>). The
- timer slack controls the accuracy of
- wake-ups triggered by timers. See
- <citerefentry><refentrytitle>prctl</refentrytitle><manvolnum>2</manvolnum></citerefentry>
- for more information. Note that in
- contrast to most other time span
- definitions this parameter takes an
- integer value in nano-seconds if no
- unit is specified. The usual time
- units are understood
- too.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><varname>DefaultLimitCPU=</varname></term>
- <term><varname>DefaultLimitFSIZE=</varname></term>
- <term><varname>DefaultLimitDATA=</varname></term>
- <term><varname>DefaultLimitSTACK=</varname></term>
- <term><varname>DefaultLimitCORE=</varname></term>
- <term><varname>DefaultLimitRSS=</varname></term>
- <term><varname>DefaultLimitNOFILE=</varname></term>
- <term><varname>DefaultLimitAS=</varname></term>
- <term><varname>DefaultLimitNPROC=</varname></term>
- <term><varname>DefaultLimitMEMLOCK=</varname></term>
- <term><varname>DefaultLimitLOCKS=</varname></term>
- <term><varname>DefaultLimitSIGPENDING=</varname></term>
- <term><varname>DefaultLimitMSGQUEUE=</varname></term>
- <term><varname>DefaultLimitNICE=</varname></term>
- <term><varname>DefaultLimitRTPRIO=</varname></term>
- <term><varname>DefaultLimitRTTIME=</varname></term>
-
- <listitem><para>These settings control
- various default resource limits for
- units. See
- <citerefentry><refentrytitle>setrlimit</refentrytitle><manvolnum>2</manvolnum></citerefentry>
- for details. Use the string
- <varname>infinity</varname> to
- configure no limit on a specific
- resource. These settings may be
- overridden in individual units
- using the corresponding LimitXXX=
- directives. Note that these resource
- limits are only defaults for units,
- they are not applied to PID 1
- itself.</para></listitem>
- </varlistentry>
- </variablelist>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd.directives</refentrytitle><manvolnum>7</manvolnum></citerefentry>
- </para>
- </refsect1>
-
-</refentry>
~ianmdlvl / elogind.git / blobdiff