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<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
<?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 2014 Zbigniew Jędrzejewski-Szmek
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="coredump.conf" conditional="ENABLE_COREDUMP">
<refentryinfo>
<title>coredump.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>coredump.conf</refentrytitle>
<manvolnum>5</manvolnum>
</refmeta>
<refnamediv>
<refname>coredump.conf</refname>
<refpurpose>Coredump storage configuration file</refpurpose>
</refnamediv>
<refsynopsisdiv>
<para><filename>/etc/systemd/coredump.conf</filename></para>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>This file configures the behaviour of <command>systemd-coredump</command>,
a handler for core dumps invoked by the kernel.</para>
</refsect1>
<refsect1>
<title>Options</title>
<para>All options are configured in the
<literal>[Coredump]</literal> section:</para>
<variablelist>
<varlistentry>
<term><varname>Storage=</varname></term>
<listitem><para>Controls where to store cores. One of
<literal>none</literal>, <literal>external</literal>,
<literal>journal</literal>, and <literal>both</literal>. When
<literal>none</literal>, the coredumps will be logged but not
stored permanently. When <literal>external</literal> (the
default), cores will be stored in <filename>/var/lib/systemd/coredump</filename>.
When <literal>journal</literal>, cores will be stored in
the journal and rotated following normal journal
rotation patterns. When <literal>both</literal>, cores
will be stored in both locations.</para>
<para>When cores are stored in the journal, they might be
compressed following journal compression settings, see
<citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
When cores are stored externally, they will be compressed
by default, see below.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>Compress=</varname></term>
<listitem><para>Controls the type of compression for external
storage. Takes a boolean argument, defaults to
<literal>yes</literal>.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><varname>ProcessSizeMax=</varname></term>
<listitem><para>The maximum size in bytes of a core
which will be processed. Coredumps exceeding this size
will be logged, but the backtrace will not be generated
and the core will not be stored.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>ExternalSizeMax=</varname></term>
<term><varname>JournalSizeMax=</varname></term>
<listitem><para>The maximum (uncompressed) size in bytes of a
core to be saved.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>MaxUse=</varname></term>
<term><varname>KeepFree=</varname></term>
<listitem><para>Enforce limits on the disk space taken up by
externally stored coredumps. <option>MaxUse=</option> makes
sure that old coredumps are removed as soon as the total disk
space taken up by coredumps grows beyond this limit (defaults
to 10% of the total disk size). <option>KeepFree=</option>
controls how much disk space to keep free at least (defaults
to 15% of the total disk size). Note that the disk space used
by coredumps might temporarily exceed these limits while
coredumps are processed. Note that old coredumps are also
removed based on time via
<citerefentry><refentrytitle>systemd-tmpfiles</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-tmpfiles</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
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