mirror of
https://github.com/systemd/systemd.git
synced 2024-11-14 15:21:37 +03:00
442f7f1553
In man journald.conf, removes reference to XZ as sole form of
compression. See commit d89c8fdf48.
In man coredump.conf, clarifies that "Compression=" controls existence,
not type, of compression.
486 lines
27 KiB
XML
486 lines
27 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
|
|
<?xml-stylesheet type="text/xsl" href="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"?>
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
|
|
|
<!--
|
|
This file is part of systemd.
|
|
|
|
Copyright 2010 Lennart Poettering
|
|
|
|
systemd is free software; you can redistribute it and/or modify it
|
|
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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
-->
|
|
|
|
<refentry id="journald.conf"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
<refentryinfo>
|
|
<title>journald.conf</title>
|
|
<productname>systemd</productname>
|
|
|
|
<authorgroup>
|
|
<author>
|
|
<contrib>Developer</contrib>
|
|
<firstname>Lennart</firstname>
|
|
<surname>Poettering</surname>
|
|
<email>lennart@poettering.net</email>
|
|
</author>
|
|
</authorgroup>
|
|
</refentryinfo>
|
|
|
|
<refmeta>
|
|
<refentrytitle>journald.conf</refentrytitle>
|
|
<manvolnum>5</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>journald.conf</refname>
|
|
<refname>journald.conf.d</refname>
|
|
<refpurpose>Journal service configuration files</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<para><filename>/etc/systemd/journald.conf</filename></para>
|
|
<para><filename>/etc/systemd/journald.conf.d/*.conf</filename></para>
|
|
<para><filename>/run/systemd/journald.conf.d/*.conf</filename></para>
|
|
<para><filename>/usr/lib/systemd/journald.conf.d/*.conf</filename></para>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>These files configure various parameters of the
|
|
systemd journal service,
|
|
<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
|
|
|
|
</refsect1>
|
|
|
|
<xi:include href="standard-conf.xml" xpointer="confd" />
|
|
<xi:include href="standard-conf.xml" xpointer="conf" />
|
|
|
|
<refsect1>
|
|
<title>Options</title>
|
|
|
|
<para>All options are configured in the
|
|
<literal>[Journal]</literal> section:</para>
|
|
|
|
<variablelist>
|
|
|
|
<varlistentry>
|
|
<term><varname>Storage=</varname></term>
|
|
|
|
<listitem><para>Controls where to
|
|
store journal data. One of
|
|
<literal>volatile</literal>,
|
|
<literal>persistent</literal>,
|
|
<literal>auto</literal> and
|
|
<literal>none</literal>. If
|
|
<literal>volatile</literal>, journal
|
|
log data will be stored only in
|
|
memory, i.e. below the
|
|
<filename>/run/log/journal</filename>
|
|
hierarchy (which is created if
|
|
needed). If
|
|
<literal>persistent</literal>, data will
|
|
be stored preferably on disk,
|
|
i.e. below the
|
|
<filename>/var/log/journal</filename>
|
|
hierarchy (which is created if
|
|
needed), with a fallback to
|
|
<filename>/run/log/journal</filename>
|
|
(which is created if needed), during
|
|
early boot and if the disk is not
|
|
writable. <literal>auto</literal> is
|
|
similar to
|
|
<literal>persistent</literal> but the
|
|
directory
|
|
<filename>/var/log/journal</filename>
|
|
is not created if needed, so that its
|
|
existence controls where log data
|
|
goes. <literal>none</literal> turns
|
|
off all storage, all log data received
|
|
will be dropped. Forwarding to other
|
|
targets, such as the console, the
|
|
kernel log buffer or a syslog daemon
|
|
will still work however. Defaults to
|
|
<literal>auto</literal>.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>Compress=</varname></term>
|
|
|
|
<listitem><para>Takes a boolean
|
|
value. If enabled (the default), data
|
|
objects that shall be stored in the
|
|
journal and are larger than a certain
|
|
threshold are compressed before they
|
|
are written to the file
|
|
system.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>Seal=</varname></term>
|
|
|
|
<listitem><para>Takes a boolean
|
|
value. If enabled (the default), and a
|
|
sealing key is available (as created
|
|
by
|
|
<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>'s
|
|
<option>--setup-keys</option>
|
|
command), Forward Secure Sealing (FSS)
|
|
for all persistent journal files is
|
|
enabled. FSS is based on <ulink
|
|
url="https://eprint.iacr.org/2013/397">Seekable
|
|
Sequential Key Generators</ulink> by
|
|
G. A. Marson and B. Poettering
|
|
(doi:10.1007/978-3-642-40203-6_7)
|
|
and may be used to protect journal files
|
|
from unnoticed alteration.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>SplitMode=</varname></term>
|
|
|
|
<listitem><para>Controls whether to
|
|
split up journal files per user. One
|
|
of <literal>uid</literal>,
|
|
<literal>login</literal> and
|
|
<literal>none</literal>. If
|
|
<literal>uid</literal>, all users will
|
|
get each their own journal files
|
|
regardless of whether they possess a
|
|
login session or not, however system
|
|
users will log into the system
|
|
journal. If <literal>login</literal>,
|
|
actually logged-in users will get each
|
|
their own journal files, but users
|
|
without login session and system users
|
|
will log into the system journal. If
|
|
<literal>none</literal>, journal files
|
|
are not split up by user and all
|
|
messages are instead stored in the
|
|
single system journal. Note that
|
|
splitting up journal files by user is
|
|
only available for journals stored
|
|
persistently. If journals are stored
|
|
on volatile storage (see above), only
|
|
a single journal file for all user IDs
|
|
is kept. Defaults to
|
|
<literal>uid</literal>.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>RateLimitInterval=</varname></term>
|
|
<term><varname>RateLimitBurst=</varname></term>
|
|
|
|
<listitem><para>Configures the rate
|
|
limiting that is applied to all
|
|
messages generated on the system. If,
|
|
in the time interval defined by
|
|
<varname>RateLimitInterval=</varname>,
|
|
more messages than specified in
|
|
<varname>RateLimitBurst=</varname> are
|
|
logged by a service, all further
|
|
messages within the interval are
|
|
dropped until the interval is over. A
|
|
message about the number of dropped
|
|
messages is generated. This rate
|
|
limiting is applied per-service, so
|
|
that two services which log do not
|
|
interfere with each other's
|
|
limits. Defaults to 1000 messages in
|
|
30s. The time specification for
|
|
<varname>RateLimitInterval=</varname>
|
|
may be specified in the following
|
|
units: <literal>s</literal>,
|
|
<literal>min</literal>,
|
|
<literal>h</literal>,
|
|
<literal>ms</literal>,
|
|
<literal>us</literal>. To turn off any
|
|
kind of rate limiting, set either
|
|
value to 0.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>SystemMaxUse=</varname></term>
|
|
<term><varname>SystemKeepFree=</varname></term>
|
|
<term><varname>SystemMaxFileSize=</varname></term>
|
|
<term><varname>RuntimeMaxUse=</varname></term>
|
|
<term><varname>RuntimeKeepFree=</varname></term>
|
|
<term><varname>RuntimeMaxFileSize=</varname></term>
|
|
|
|
<listitem><para>Enforce size limits on
|
|
the journal files stored. The options
|
|
prefixed with
|
|
<literal>System</literal> apply to the
|
|
journal files when stored on a
|
|
persistent file system, more
|
|
specifically
|
|
<filename>/var/log/journal</filename>. The
|
|
options prefixed with
|
|
<literal>Runtime</literal> apply to
|
|
the journal files when stored on a
|
|
volatile in-memory file system, more
|
|
specifically
|
|
<filename>/run/log/journal</filename>. The
|
|
former is used only when
|
|
<filename>/var</filename> is mounted,
|
|
writable, and the directory
|
|
<filename>/var/log/journal</filename>
|
|
exists. Otherwise, only the latter
|
|
applies. Note that this means that
|
|
during early boot and if the
|
|
administrator disabled persistent
|
|
logging, only the latter options apply,
|
|
while the former apply if persistent
|
|
logging is enabled and the system is
|
|
fully booted
|
|
up. <command>journalctl</command> and
|
|
<command>systemd-journald</command>
|
|
ignore all files with names not ending
|
|
with <literal>.journal</literal> or
|
|
<literal>.journal~</literal>, so only
|
|
such files, located in the appropriate
|
|
directories, are taken into account
|
|
when calculating current disk usage.
|
|
</para>
|
|
|
|
<para><varname>SystemMaxUse=</varname>
|
|
and <varname>RuntimeMaxUse=</varname>
|
|
control how much disk space the
|
|
journal may use up at maximum.
|
|
<varname>SystemKeepFree=</varname> and
|
|
<varname>RuntimeKeepFree=</varname>
|
|
control how much disk space
|
|
systemd-journald shall leave free for
|
|
other uses.
|
|
<command>systemd-journald</command>
|
|
will respect both limits and use the
|
|
smaller of the two values.</para>
|
|
|
|
<para>The first pair defaults to 10%
|
|
and the second to 15% of the size of
|
|
the respective file system. If the
|
|
file system is nearly full and either
|
|
<varname>SystemKeepFree=</varname> or
|
|
<varname>RuntimeKeepFree=</varname> is
|
|
violated when systemd-journald is
|
|
started, the value will be raised to
|
|
percentage that is actually free. This
|
|
means that if there was enough
|
|
free space before and journal files were
|
|
created, and subsequently something
|
|
else causes the file system to fill
|
|
up, journald will stop using more
|
|
space, but it will not be removing
|
|
existing files to go reduce footprint
|
|
either.</para>
|
|
|
|
<para><varname>SystemMaxFileSize=</varname>
|
|
and
|
|
<varname>RuntimeMaxFileSize=</varname>
|
|
control how large individual journal
|
|
files may grow at maximum. This
|
|
influences the granularity in which
|
|
disk space is made available through
|
|
rotation, i.e. deletion of historic
|
|
data. Defaults to one eighth of the
|
|
values configured with
|
|
<varname>SystemMaxUse=</varname> and
|
|
<varname>RuntimeMaxUse=</varname>, so
|
|
that usually seven rotated journal
|
|
files are kept as history. Specify
|
|
values in bytes or use K, M, G, T, P,
|
|
E as units for the specified sizes
|
|
(equal to 1024, 1024²,... bytes).
|
|
Note that size limits are enforced
|
|
synchronously when journal files are
|
|
extended, and no explicit rotation
|
|
step triggered by time is
|
|
needed.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>MaxFileSec=</varname></term>
|
|
|
|
<listitem><para>The maximum time to
|
|
store entries in a single journal
|
|
file before rotating to the next
|
|
one. Normally, time-based rotation
|
|
should not be required as size-based
|
|
rotation with options such as
|
|
<varname>SystemMaxFileSize=</varname>
|
|
should be sufficient to ensure that
|
|
journal files do not grow without
|
|
bounds. However, to ensure that not
|
|
too much data is lost at once when old
|
|
journal files are deleted, it might
|
|
make sense to change this value from
|
|
the default of one month. Set to 0 to
|
|
turn off this feature. This setting
|
|
takes time values which may be
|
|
suffixed with the units
|
|
<literal>year</literal>,
|
|
<literal>month</literal>,
|
|
<literal>week</literal>, <literal>day</literal>,
|
|
<literal>h</literal> or <literal>m</literal>
|
|
to override the default time unit of
|
|
seconds.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>MaxRetentionSec=</varname></term>
|
|
|
|
<listitem><para>The maximum time to
|
|
store journal entries. This
|
|
controls whether journal files
|
|
containing entries older then the
|
|
specified time span are
|
|
deleted. Normally, time-based deletion
|
|
of old journal files should not be
|
|
required as size-based deletion with
|
|
options such as
|
|
<varname>SystemMaxUse=</varname>
|
|
should be sufficient to ensure that
|
|
journal files do not grow without
|
|
bounds. However, to enforce data
|
|
retention policies, it might make sense
|
|
to change this value from the
|
|
default of 0 (which turns off this
|
|
feature). This setting also takes
|
|
time values which may be suffixed with
|
|
the units <literal>year</literal>,
|
|
<literal>month</literal>,
|
|
<literal>week</literal>, <literal>day</literal>,
|
|
<literal>h</literal> or <literal> m</literal>
|
|
to override the default time unit of
|
|
seconds.</para></listitem>
|
|
</varlistentry>
|
|
|
|
|
|
<varlistentry>
|
|
<term><varname>SyncIntervalSec=</varname></term>
|
|
|
|
<listitem><para>The timeout before
|
|
synchronizing journal files to
|
|
disk. After syncing, journal files are
|
|
placed in the OFFLINE state. Note that
|
|
syncing is unconditionally done
|
|
immediately after a log message of
|
|
priority CRIT, ALERT or EMERG has been
|
|
logged. This setting hence applies
|
|
only to messages of the levels ERR,
|
|
WARNING, NOTICE, INFO, DEBUG. The
|
|
default timeout is 5 minutes.
|
|
</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>ForwardToSyslog=</varname></term>
|
|
<term><varname>ForwardToKMsg=</varname></term>
|
|
<term><varname>ForwardToConsole=</varname></term>
|
|
<term><varname>ForwardToWall=</varname></term>
|
|
|
|
<listitem><para>Control whether log
|
|
messages received by the journal
|
|
daemon shall be forwarded to a
|
|
traditional syslog daemon, to the
|
|
kernel log buffer (kmsg), to the
|
|
system console, or sent as wall
|
|
messages to all logged-in users. These
|
|
options take boolean arguments. If
|
|
forwarding to syslog is enabled but no
|
|
syslog daemon is running, the
|
|
respective option has no effect. By
|
|
default, only forwarding wall is
|
|
enabled. These settings may be
|
|
overridden at boot time with the
|
|
kernel command line options
|
|
<literal>systemd.journald.forward_to_syslog=</literal>,
|
|
<literal>systemd.journald.forward_to_kmsg=</literal>,
|
|
<literal>systemd.journald.forward_to_console=</literal>
|
|
and
|
|
<literal>systemd.journald.forward_to_wall=</literal>.
|
|
When forwarding to the console, the
|
|
TTY to log to can be changed with
|
|
<varname>TTYPath=</varname>, described
|
|
below.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>MaxLevelStore=</varname></term>
|
|
<term><varname>MaxLevelSyslog=</varname></term>
|
|
<term><varname>MaxLevelKMsg=</varname></term>
|
|
<term><varname>MaxLevelConsole=</varname></term>
|
|
<term><varname>MaxLevelWall=</varname></term>
|
|
|
|
<listitem><para>Controls the maximum
|
|
log level of messages that are stored
|
|
on disk, forwarded to syslog, kmsg,
|
|
the console or wall (if that is
|
|
enabled, see above). As argument,
|
|
takes one of
|
|
<literal>emerg</literal>,
|
|
<literal>alert</literal>,
|
|
<literal>crit</literal>,
|
|
<literal>err</literal>,
|
|
<literal>warning</literal>,
|
|
<literal>notice</literal>,
|
|
<literal>info</literal>,
|
|
<literal>debug</literal> or integer
|
|
values in the range of 0..7 (corresponding
|
|
to the same levels). Messages equal or below
|
|
the log level specified are
|
|
stored/forwarded, messages above are
|
|
dropped. Defaults to
|
|
<literal>debug</literal> for
|
|
<varname>MaxLevelStore=</varname> and
|
|
<varname>MaxLevelSyslog=</varname>, to
|
|
ensure that the all messages are
|
|
written to disk and forwarded to
|
|
syslog. Defaults to
|
|
<literal>notice</literal> for
|
|
<varname>MaxLevelKMsg=</varname>,
|
|
<literal>info</literal> for
|
|
<varname>MaxLevelConsole=</varname> and
|
|
<literal>emerg</literal> for
|
|
<varname>MaxLevelWall=</varname>.</para></listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><varname>TTYPath=</varname></term>
|
|
|
|
<listitem><para>Change the console TTY
|
|
to use if
|
|
<varname>ForwardToConsole=yes</varname>
|
|
is used. Defaults to
|
|
<filename>/dev/console</filename>.</para></listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-journald.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
|
|
<citerefentry><refentrytitle>systemd-system.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
|
|
</refentry>
|