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NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION DIRECTORIES AND PRECEDENCE | OPTIONS | SEE ALSO | COLOPHON |
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 2020-08-13. (At that
time, the date of the most recent commit that was found in the repos‐
itory was 2020-08-11.) 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 246 COREDUMP.CONF(5)
Pages that refer to this page: 30-systemd-environment-d-generator(7) , systemd.index(7)