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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>systemd manager configuration file</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>system.conf</filename></para>
<para><filename>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>
<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>SysVConsole=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></listitem>
</varlistentry>
<varlistentry>
<term><varname>JoinControllers=cpu,cpuacct</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
hierachies, 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></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>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
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