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/. The main configuration file is read
33 before any of the configuration directories, and has the lowest
34 precedence; entries in a file in any configuration directory override
35 entries in the single configuration file. Files in the *.conf.d/
36 configuration subdirectories are sorted by their filename in
37 lexicographic order, regardless of in which of the subdirectories they
38 reside. When multiple files specify the same option, for options which
39 accept just a single value, the entry in the file with the
40 lexicographically latest name takes precedence. For options which
41 accept a list of values, entries are collected as they occur in files
42 sorted lexicographically.
43 Files in /etc/ are reserved for the local administrator, who may use
45 this logic to override the configuration files installed by vendor
46 packages. It is recommended to prefix all filenames in those
47 subdirectories with a two-digit number and a dash, to simplify the
48 ordering of the files.
49 To disable a configuration file supplied by the vendor, the recommended
51 way is to place a symlink to /dev/null in the configuration directory
52 in /etc/, with the same filename as the vendor configuration file.
53
55 All options are configured in the "[Coredump]" section:
56 Storage=
58 Controls where to store cores. One of "none", "external", and
59 "journal". When "none", the core dumps may be logged (including the
60 backtrace if possible), but not stored permanently. When "external"
61 (the default), cores will be stored in /var/lib/systemd/coredump/.
62 When "journal", cores will be stored in the journal and rotated
63 following normal journal rotation patterns.
64 When cores are stored in the journal, they might be compressed
66 following journal compression settings, see journald.conf(5). When
67 cores are stored externally, they will be compressed by default,
68 see below.
69 Compress=
71 Controls compression for external storage. Takes a boolean
72 argument, which defaults to "yes".
73 ProcessSizeMax=
75 The maximum size in bytes of a core which will be processed. Core
76 dumps exceeding this size may be stored, but the backtrace will not
77 be generated.
78 Setting Storage=none and ProcessSizeMax=0 disables all coredump
80 handling except for a log entry.
81 ExternalSizeMax=, JournalSizeMax=
83 The maximum (uncompressed) size in bytes of a core to be saved.
84 MaxUse=, KeepFree=
86 Enforce limits on the disk space taken up by externally stored core
87 dumps. MaxUse= makes sure that old core dumps are removed as soon
88 as the total disk space taken up by core dumps grows beyond this
89 limit (defaults to 10% of the total disk size). KeepFree= controls
90 how much disk space to keep free at least (defaults to 15% of the
91 total disk size). Note that the disk space used by core dumps might
92 temporarily exceed these limits while core dumps are processed.
93 Note that old core dumps are also removed based on time via
94 systemd-tmpfiles(8). Set either value to 0 to turn off size-based
95 clean-up.
96 The defaults for all values are listed as comments in the template
98 /etc/systemd/coredump.conf file that is installed by default.
99
101 systemd-journald.service(8), coredumpctl(1), systemd-tmpfiles(8)
102systemd 245 COREDUMP.CONF(5)