mirror of
https://github.com/systemd/systemd.git
synced 2024-11-27 12:13:33 +08:00
181 lines
8.6 KiB
XML
181 lines
8.6 KiB
XML
<?xml version='1.0'?>
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
|
|
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
|
|
|
|
<refentry id="coredump.conf" conditional="ENABLE_COREDUMP"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
<refentryinfo>
|
|
<title>coredump.conf</title>
|
|
<productname>systemd</productname>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>coredump.conf</refentrytitle>
|
|
<manvolnum>5</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>coredump.conf</refname>
|
|
<refname>coredump.conf.d</refname>
|
|
<refpurpose>Core dump storage configuration files</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<para><simplelist>
|
|
<member><filename>/etc/systemd/coredump.conf</filename></member>
|
|
<member><filename>/run/systemd/coredump.conf</filename></member>
|
|
<member><filename>/usr/local/lib/systemd/coredump.conf</filename></member>
|
|
<member><filename>/usr/lib/systemd/coredump.conf</filename></member>
|
|
<member><filename>/etc/systemd/coredump.conf.d/*.conf</filename></member>
|
|
<member><filename>/run/systemd/coredump.conf.d/*.conf</filename></member>
|
|
<member><filename>/usr/local/lib/systemd/coredump.conf.d/*.conf</filename></member>
|
|
<member><filename>/usr/lib/systemd/coredump.conf.d/*.conf</filename></member>
|
|
</simplelist></para>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>These files configure the behavior of
|
|
<citerefentry><refentrytitle>systemd-coredump</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
a handler for core dumps invoked by the kernel. Whether <command>systemd-coredump</command> is used
|
|
is determined by the kernel's
|
|
<varname>kernel.core_pattern</varname> <citerefentry project='man-pages'><refentrytitle>sysctl</refentrytitle><manvolnum>8</manvolnum></citerefentry>
|
|
setting. See
|
|
<citerefentry><refentrytitle>systemd-coredump</refentrytitle><manvolnum>8</manvolnum></citerefentry>
|
|
and
|
|
<citerefentry project='man-pages'><refentrytitle>core</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
|
pages for the details.</para>
|
|
</refsect1>
|
|
|
|
<xi:include href="standard-conf.xml" xpointer="main-conf" />
|
|
|
|
<refsect1>
|
|
<title>Options</title>
|
|
|
|
<para>All options are configured in the
|
|
[Coredump] section:</para>
|
|
|
|
<variablelist class='config-directives'>
|
|
|
|
<varlistentry>
|
|
<term><varname>Storage=</varname></term>
|
|
|
|
<listitem><para>Controls where to store cores. One of <literal>none</literal>,
|
|
<literal>external</literal>, and <literal>journal</literal>. When <literal>none</literal>, the core
|
|
dumps may be logged (including the backtrace if possible), 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.</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>
|
|
|
|
<para>Note that in order to process a coredump (i.e. extract a stack trace) the core must be written
|
|
to disk first. Thus, unless <varname>ProcessSizeMax=</varname> is set to 0 (see below), the core will
|
|
be written to <filename>/var/lib/systemd/coredump/</filename> either way (under a temporary filename,
|
|
or even in an unlinked file), <varname>Storage=</varname> thus only controls whether to leave it
|
|
there even after it was processed.</para>
|
|
|
|
<xi:include href="version-info.xml" xpointer="v215"/></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>Compress=</varname></term>
|
|
|
|
<listitem><para>Controls compression for external
|
|
storage. Takes a boolean argument, which defaults to
|
|
<literal>yes</literal>.</para>
|
|
|
|
<xi:include href="version-info.xml" xpointer="v215"/>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>ProcessSizeMax=</varname></term>
|
|
|
|
<listitem><para>The maximum size in bytes of a core which will be processed. Core dumps exceeding
|
|
this size may be stored, but the stack trace will not be generated. Like other sizes in this same
|
|
config file, the usual suffixes to the base of 1024 are allowed (B, K, M, G, T, P, and E). Defaults
|
|
to 1G on 32-bit systems, 32G on 64-bit systems.</para>
|
|
|
|
<para>Setting <varname>Storage=none</varname> and <varname>ProcessSizeMax=0</varname>
|
|
disables all coredump handling except for a log entry.</para>
|
|
|
|
<xi:include href="version-info.xml" xpointer="v215"/>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>EnterNamespace=</varname></term>
|
|
|
|
<listitem><para>Controls whether <command>systemd-coredump</command> will attempt to use the mount tree of
|
|
a process that crashed in PID namespace. Access to the namespace's mount tree might be necessary to generate
|
|
a fully symbolized backtrace. If set to <literal>yes</literal>, then <command>systemd-coredump</command> will
|
|
obtain the mount tree from corresponding mount namespace and will try to generate the stack trace using the
|
|
binary and libraries from the mount namespace. Note that the coredump of the namespaced process might
|
|
still be saved in <filename>/var/lib/systemd/coredump/</filename> even if <varname>EnterNamespace=</varname>
|
|
is set to <literal>no</literal>. Defaults to <literal>no</literal>.</para>
|
|
|
|
<xi:include href="version-info.xml" xpointer="v257"/>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>ExternalSizeMax=</varname></term>
|
|
<term><varname>JournalSizeMax=</varname></term>
|
|
|
|
<listitem><para>The maximum (compressed or uncompressed) size in bytes of a coredump to be saved in
|
|
separate files on disk (default: 1G on 32-bit systems, 32G on 64-bit systems) or in the journal
|
|
(default: 767M). Note that the journal service enforces a hard limit on journal log records of 767M,
|
|
and will ignore larger submitted log records. Hence, <varname>JournalSizeMax=</varname> may be
|
|
lowered relative to the default, but not increased. Unit suffixes are allowed just as in
|
|
<option>ProcessSizeMax=</option>.</para>
|
|
|
|
<para><varname>ExternalSizeMax=infinity</varname> sets the core size to unlimited.</para>
|
|
|
|
<xi:include href="version-info.xml" xpointer="v215"/></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>MaxUse=</varname></term>
|
|
<term><varname>KeepFree=</varname></term>
|
|
|
|
<listitem><para>Enforce limits on the disk space, specified
|
|
in bytes, taken up by externally stored core dumps.
|
|
Unit suffixes are allowed just as in <option>ProcessSizeMax=</option>.
|
|
<option>MaxUse=</option> makes
|
|
sure that old core dumps are removed as soon as the total disk
|
|
space taken up by core dumps 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 core dumps might temporarily exceed these limits while
|
|
core dumps are processed. Note that old core dumps are also
|
|
removed based on time via
|
|
<citerefentry><refentrytitle>systemd-tmpfiles</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
|
|
Set either value to 0 to turn off size-based cleanup.</para>
|
|
|
|
<xi:include href="version-info.xml" xpointer="v215"/></listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
<para>The defaults for all values are listed as comments in the
|
|
template <filename>/etc/systemd/coredump.conf</filename> file that
|
|
is installed by default.</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para><simplelist type="inline">
|
|
<member><citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry></member>
|
|
<member><citerefentry><refentrytitle>coredumpctl</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
|
|
<member><citerefentry><refentrytitle>systemd-tmpfiles</refentrytitle><manvolnum>8</manvolnum></citerefentry></member>
|
|
</simplelist></para>
|
|
</refsect1>
|
|
|
|
</refentry>
|