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NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION DIRECTORIES AND PRECEDENCE | OPTIONS | SEE ALSO | COLOPHON |
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COREDUMP.CONF(5) coredump.conf COREDUMP.CONF(5)
coredump.conf, coredump.conf.d - Core dump storage configuration
files
/etc/systemd/coredump.conf
/etc/systemd/coredump.conf.d/*.conf
/run/systemd/coredump.conf.d/*.conf
/usr/lib/systemd/coredump.conf.d/*.conf
These files configure the behavior of systemd-coredump(8), a
handler for core dumps invoked by the kernel. Whether
systemd-coredump is used is determined by the kernel's
kernel.core_pattern sysctl(8) setting. See systemd-coredump(8)
and core(5) pages for the details.
The default configuration is defined during compilation, so a
configuration file is only needed when it is necessary to deviate
from those defaults. By default, the configuration file in
/etc/systemd/ contains commented out entries showing the defaults
as a guide to the administrator. This file can be edited to
create local overrides.
When packages need to customize the configuration, they can
install configuration snippets in /usr/lib/systemd/*.conf.d/ or
/usr/local/lib/systemd/*.conf.d/. The main configuration file is
read before any of the configuration directories, and has the
lowest precedence; entries in a file in any configuration
directory override entries in the single configuration file.
Files in the *.conf.d/ configuration subdirectories are sorted by
their filename in lexicographic order, regardless of in which of
the subdirectories they reside. When multiple files specify the
same option, for options which accept just a single value, the
entry in the file with the lexicographically latest name takes
precedence. For options which accept a list of values, entries
are collected as they occur in files sorted lexicographically.
Files in /etc/ are reserved for the local administrator, who may
use this logic to override the configuration files installed by
vendor packages. It is recommended to prefix all filenames in
those subdirectories with a two-digit number and a dash, to
simplify the ordering of the files.
To disable a configuration file supplied by the vendor, the
recommended way is to place a symlink to /dev/null in the
configuration directory in /etc/, with the same filename as the
vendor configuration file.
All options are configured in the [Coredump] section:
Storage=
Controls where to store cores. One of "none", "external", and
"journal". When "none", the core dumps may be logged
(including the backtrace if possible), but not stored
permanently. When "external" (the default), cores will be
stored in /var/lib/systemd/coredump/. When "journal", cores
will be stored in the journal and rotated following normal
journal rotation patterns.
When cores are stored in the journal, they might be
compressed following journal compression settings, see
journald.conf(5). When cores are stored externally, they will
be compressed by default, see below.
Compress=
Controls compression for external storage. Takes a boolean
argument, which defaults to "yes".
ProcessSizeMax=
The maximum size in bytes of a core which will be processed.
Core dumps exceeding this size may be stored, but the
backtrace will not be generated.
Setting Storage=none and ProcessSizeMax=0 disables all
coredump handling except for a log entry.
ExternalSizeMax=, JournalSizeMax=
The maximum (uncompressed) size in bytes of a core to be
saved.
MaxUse=, KeepFree=
Enforce limits on the disk space taken up by externally
stored core dumps. MaxUse= 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). KeepFree= 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
systemd-tmpfiles(8). Set either value to 0 to turn off
size-based clean-up.
The defaults for all values are listed as comments in the
template /etc/systemd/coredump.conf file that is installed by
default.
systemd-journald.service(8), coredumpctl(1), systemd-tmpfiles(8)
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have
a bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2020-12-18. (At that
time, the date of the most recent commit that was found in the
repository was 2020-12-18.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
systemd 247 COREDUMP.CONF(5)
Pages that refer to this page: coredumpctl(1), systemd.directives(7), systemd.index(7), systemd-coredump(8)
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