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143 lines
6.1 KiB
XML
143 lines
6.1 KiB
XML
<?xml version='1.0'?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="coredump.conf" conditional="ENABLE_COREDUMP"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>coredump.conf</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>coredump.conf</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>coredump.conf</refname>
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<refname>coredump.conf.d</refname>
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<refpurpose>Core dump storage configuration files</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>/etc/systemd/coredump.conf</filename></para>
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<para><filename>/etc/systemd/coredump.conf.d/*.conf</filename></para>
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<para><filename>/run/systemd/coredump.conf.d/*.conf</filename></para>
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<para><filename>/usr/lib/systemd/coredump.conf.d/*.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>These files configure the behavior of
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<citerefentry><refentrytitle>systemd-coredump</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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a handler for core dumps invoked by the kernel. Whether <command>systemd-coredump</command> is used
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is determined by the kernel's
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<varname>kernel.core_pattern</varname> <citerefentry project='man-pages'><refentrytitle>sysctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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setting. See
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<citerefentry><refentrytitle>systemd-coredump</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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and
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<citerefentry project='man-pages'><refentrytitle>core</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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pages for the details.</para>
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</refsect1>
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<xi:include href="standard-conf.xml" xpointer="main-conf" />
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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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[Coredump] section:</para>
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<variablelist class='config-directives'>
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<varlistentry>
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<term><varname>Storage=</varname></term>
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<listitem><para>Controls where to store cores. One of <literal>none</literal>,
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<literal>external</literal>, and <literal>journal</literal>. When
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<literal>none</literal>, the core dumps may be logged (including the backtrace if
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possible), but not stored permanently. When <literal>external</literal> (the
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default), cores will be stored in <filename>/var/lib/systemd/coredump/</filename>.
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When <literal>journal</literal>, cores will be stored in the journal and rotated
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following normal journal rotation patterns.</para>
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<para>When cores are stored in the journal, they might be
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compressed following journal compression settings, see
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<citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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When cores are stored externally, they will be compressed
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by default, see below.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>Compress=</varname></term>
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<listitem><para>Controls compression for external
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storage. Takes a boolean argument, which defaults to
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<literal>yes</literal>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>ProcessSizeMax=</varname></term>
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<listitem><para>The maximum size in bytes of a core which will be processed. Core dumps exceeding
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this size may be stored, but the backtrace will not be generated. Like other sizes in this same
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config file, the usual suffixes to the base of 1024 are allowed (B, K, M, G, T, P, and E). Defaults
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to 1G on 32bit systems, 32G on 64bit systems.</para>
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<para>Setting <varname>Storage=none</varname> and <varname>ProcessSizeMax=0</varname>
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disables all coredump handling except for a log entry.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><varname>ExternalSizeMax=</varname></term>
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<term><varname>JournalSizeMax=</varname></term>
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<listitem><para>The maximum (compressed or uncompressed) size in bytes of a core to be saved in
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separate files on disk (default: 1G on 32bit, 32G on 64bit systems) or in the journal (default:
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10M). Unit suffixes are allowed just as in <option>ProcessSizeMax=</option>.</para></listitem>
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<para><varname>ExternalSizeMax=infinity</varname> sets the core size to unlimited.</para>
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</varlistentry>
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<varlistentry>
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<term><varname>MaxUse=</varname></term>
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<term><varname>KeepFree=</varname></term>
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<listitem><para>Enforce limits on the disk space, specified
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in bytes, taken up by externally stored core dumps.
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Unit suffixes are allowed just as in <option>ProcessSizeMax=</option>.
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<option>MaxUse=</option> makes
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sure that old core dumps are removed as soon as the total disk
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space taken up by core dumps grows beyond this limit (defaults
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to 10% of the total disk size). <option>KeepFree=</option>
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controls how much disk space to keep free at least (defaults
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to 15% of the total disk size). Note that the disk space used
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by core dumps might temporarily exceed these limits while
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core dumps are processed. Note that old core dumps are also
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removed based on time via
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<citerefentry><refentrytitle>systemd-tmpfiles</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
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Set either value to 0 to turn off size-based cleanup.</para></listitem>
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</varlistentry>
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</variablelist>
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<para>The defaults for all values are listed as comments in the
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template <filename>/etc/systemd/coredump.conf</filename> file that
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is installed by default.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-tmpfiles</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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