1COREDUMP.CONF(5) coredump.conf COREDUMP.CONF(5)
2
6 coredump.conf, coredump.conf.d - Core dump storage configuration files
7
9 /etc/systemd/coredump.conf
10 /etc/systemd/coredump.conf.d/*.conf
12 /run/systemd/coredump.conf.d/*.conf
14 /usr/lib/systemd/coredump.conf.d/*.conf
16
18 These files configure the behavior of systemd-coredump(8), a handler
19 for core dumps invoked by the kernel. Whether systemd-coredump is used
20 is determined by the kernel's kernel.core_pattern sysctl(8) setting.
21 See systemd-coredump(8) and core(5) pages for the details.
22
24 The default configuration is defined during compilation, so a
25 configuration file is only needed when it is necessary to deviate from
26 those defaults. By default, the configuration file in /etc/systemd/
27 contains commented out entries showing the defaults as a guide to the
28 administrator. This file can be edited to create local overrides.
29 When packages need to customize the configuration, they can install
31 configuration snippets in /usr/lib/systemd/*.conf.d/ or
32 /usr/local/lib/systemd/*.conf.d/. Files in /etc/ are reserved for the
33 local administrator, who may use this logic to override the
34 configuration files installed by vendor packages. The main
35 configuration file is read before any of the configuration directories,
36 and has the lowest precedence; entries in a file in any configuration
37 directory override entries in the single configuration file. Files in
38 the *.conf.d/ configuration subdirectories are sorted by their filename
39 in lexicographic order, regardless of which of the subdirectories they
40 reside in. When multiple files specify the same option, for options
41 which accept just a single value, the entry in the file with the
42 lexicographically latest name takes precedence. For options which
43 accept a list of values, entries are collected as they occur in files
44 sorted lexicographically. It is recommended to prefix all filenames in
45 those subdirectories with a two-digit number and a dash, to simplify
46 the ordering of the files.
47 To disable a configuration file supplied by the vendor, the recommended
49 way is to place a symlink to /dev/null in the configuration directory
50 in /etc/, with the same filename as the vendor configuration file.
51
53 All options are configured in the "[Coredump]" section:
54 Storage=
56 Controls where to store cores. One of "none", "external", and
57 "journal". When "none", the core dumps may be logged (including the
58 backtrace if possible), but not stored permanently. When "external"
59 (the default), cores will be stored in /var/lib/systemd/coredump/.
60 When "journal", cores will be stored in the journal and rotated
61 following normal journal rotation patterns.
62 When cores are stored in the journal, they might be compressed
64 following journal compression settings, see journald.conf(5). When
65 cores are stored externally, they will be compressed by default,
66 see below.
67 Compress=
69 Controls compression for external storage. Takes a boolean
70 argument, which defaults to "yes".
71 ProcessSizeMax=
73 The maximum size in bytes of a core which will be processed. Core
74 dumps exceeding this size may be stored, but the backtrace will not
75 be generated.
76 Setting Storage=none and ProcessSizeMax=0 disables all coredump
78 handling except for a log entry.
79 ExternalSizeMax=, JournalSizeMax=
81 The maximum (uncompressed) size in bytes of a core to be saved.
82 MaxUse=, KeepFree=
84 Enforce limits on the disk space taken up by externally stored core
85 dumps. MaxUse= makes sure that old core dumps are removed as soon
86 as the total disk space taken up by core dumps grows beyond this
87 limit (defaults to 10% of the total disk size). KeepFree= controls
88 how much disk space to keep free at least (defaults to 15% of the
89 total disk size). Note that the disk space used by core dumps might
90 temporarily exceed these limits while core dumps are processed.
91 Note that old core dumps are also removed based on time via
92 systemd-tmpfiles(8). Set either value to 0 to turn off size-based
93 clean-up.
94 The defaults for all values are listed as comments in the template
96 /etc/systemd/coredump.conf file that is installed by default.
97
99 systemd-journald.service(8), coredumpctl(1), systemd-tmpfiles(8)
100systemd 243 COREDUMP.CONF(5)