X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=man%2Fsysctl.d.xml;h=00a857b11a3cd4ca30140db9f61cff8a4d943a2a;hb=67608cad2301f9ab5c92336992c176505640f2ba;hp=51afbfa77a158e86eddc5be629f48f82ee8702a6;hpb=db1413d7380acacc4e50faf801ca0d401da89764;p=elogind.git
diff --git a/man/sysctl.d.xml b/man/sysctl.d.xml
index 51afbfa77..00a857b11 100644
--- a/man/sysctl.d.xml
+++ b/man/sysctl.d.xml
@@ -7,16 +7,16 @@
Copyright 2011 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU General Public License
+ You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see .
-->
@@ -46,46 +46,73 @@
- /usr/lib/sysctl.d/*.conf
/etc/sysctl.d/*.conf
/run/sysctl.d/*.conf
+ /usr/lib/sysctl.d/*.conf
Description
- systemd uses
- /etc/sysctl.d/ to configure
- sysctl8
- kernel parameters to load during boot. Each
- configuration file is named in the style of
- /etc/sysctl.d/<program>.conf.
+ At boot,
+ systemd-sysctl.service8
+ reads configuration files from the above directories
+ to configure
+ sysctl8
+ kernel parameters.
- Configuration Format
-
- The configuration files should simply contain a
- list of variable assignments, separated by
- newlines. Empty lines and lines whose first
- non-whitespace character is # or ; are ignored.
-
- Note that both / and . are accepted as
- separators in sysctl variable names.
-
- Files in /etc/ overwrite
- files with the same name in /usr/lib/.
- Files in /run overwrite files with
- the same name in /etc/ and
- /usr/lib/. Packages should install their
- configuration files in /usr/lib/, files
- in /etc/ are reserved for the local
- administration, which possibly decides to overwrite the
- configurations installed from packages. All files are sorted
- by filename in alphabetical order, regardless in which of the
- directories they reside, to ensure that a specific
- configuration file takes precedence over another file with
- an alphabetically later name.
+ Configuration Format
+
+ The configuration files contain a list of
+ variable assignments, separated by newlines. Empty
+ lines and lines whose first non-whitespace character
+ is # or ; are ignored.
+
+ Note that both / and . are accepted as label
+ separators within sysctl variable
+ names. kernel.domainname=foo and
+ kernel/domainname=foo hence are
+ entirely equivalent.
+
+ Each configuration file shall be named in the
+ style of program.conf.
+ Files in /etc/ override files
+ with the same name in /usr/lib/
+ and /run/. Files in
+ /run/ override files with the same
+ name in /usr/lib/. Packages
+ should install their configuration files in
+ /usr/lib/. Files in
+ /etc/ are reserved for the local
+ administrator, who may use this logic to override the
+ configuration files installed by vendor packages. All
+ configuration files are sorted by their filename in
+ lexicographic order, regardless of which of the
+ directories they reside in. If multiple files specify the
+ same variable name, the entry in the file with the
+ lexicographically latest name will be applied. It is
+ recommended to prefix all filenames with a two-digit
+ number and a dash, to simplify the ordering of the
+ files.
+
+ If the administrator wants to disable a
+ configuration file supplied by the vendor, the
+ recommended way is to place a symlink to
+ /dev/null in
+ /etc/sysctl.d/ bearing the
+ same filename.
+
+ The settings configured with
+ sysctl.d files will be applied
+ early on boot. The network interface-specific options
+ will also be applied individually for each network
+ interface as it shows up in the system. (More
+ specifically, that is
+ net.ipv4.conf.*,
+ net.ipv6.conf.*,
+ net.ipv4.neigh.* and net.ipv6.neigh.*)
@@ -102,6 +129,8 @@ kernel.domainname=example.com
See Also
systemd1,
+ systemd-sysctl.service8,
+ systemd-delta1,
sysctl8,
sysctl.conf5