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diff --git a/man/systemd-journald.service.xml b/man/systemd-journald.service.xml deleted file mode 100644 index 2810638bc2..0000000000 --- a/man/systemd-journald.service.xml +++ /dev/null @@ -1,276 +0,0 @@ -<?xml version='1.0'?> <!--*-nxml-*--> -<!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="systemd-journald.service"> - - <refentryinfo> - <title>systemd-journald.service</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>systemd-journald.service</refentrytitle> - <manvolnum>8</manvolnum> - </refmeta> - - <refnamediv> - <refname>systemd-journald.service</refname> - <refname>systemd-journald.socket</refname> - <refname>systemd-journald-dev-log.socket</refname> - <refname>systemd-journald-audit.socket</refname> - <refname>systemd-journald</refname> - <refpurpose>Journal service</refpurpose> - </refnamediv> - - <refsynopsisdiv> - <para><filename>systemd-journald.service</filename></para> - <para><filename>systemd-journald.socket</filename></para> - <para><filename>systemd-journald-dev-log.socket</filename></para> - <para><filename>systemd-journald-audit.socket</filename></para> - <para><filename>/usr/lib/systemd/systemd-journald</filename></para> - </refsynopsisdiv> - - <refsect1> - <title>Description</title> - - <para><filename>systemd-journald</filename> is a system service - that collects and stores logging data. It creates and maintains - structured, indexed journals based on logging information that is - received from a variety of sources:</para> - - <itemizedlist> - <listitem><para>Kernel log messages, via kmsg</para></listitem> - - <listitem><para>Simple system log messages, via the libc - <citerefentry project='man-pages'><refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum></citerefentry> - call</para></listitem> - - <listitem><para>Structured system log messages via the native - Journal API, see - <citerefentry><refentrytitle>sd_journal_print</refentrytitle><manvolnum>4</manvolnum></citerefentry></para></listitem> - - <listitem><para>Standard output and standard error of system - services</para></listitem> - - <listitem><para>Audit records, via the audit - subsystem</para></listitem> - </itemizedlist> - - <para>The daemon will implicitly collect numerous metadata fields - for each log messages in a secure and unfakeable way. See - <citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry> - for more information about the collected metadata. - </para> - - <para>Log data collected by the journal is primarily text-based - but can also include binary data where necessary. All objects - stored in the journal can be up to 2^64-1 bytes in size.</para> - - <para>By default, the journal stores log data in - <filename>/run/log/journal/</filename>. Since - <filename>/run/</filename> is volatile, log data is lost at - reboot. To make the data persistent, it is sufficient to create - <filename>/var/log/journal/</filename> where - <filename>systemd-journald</filename> will then store the - data:</para> - - <programlisting>mkdir -p /var/log/journal -systemd-tmpfiles --create --prefix /var/log/journal</programlisting> - - <para>See - <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry> - for information about the configuration of this service.</para> - </refsect1> - - <refsect1> - <title>Signals</title> - - <variablelist> - <varlistentry> - <term>SIGUSR1</term> - - <listitem><para>Request that journal data from - <filename>/run/</filename> is flushed to - <filename>/var/</filename> in order to make it persistent (if - this is enabled). This must be used after - <filename>/var/</filename> is mounted, as otherwise log data - from <filename>/run</filename> is never flushed to - <filename>/var</filename> regardless of the configuration. The - <command>journalctl --flush</command> command uses this signal - to request flushing of the journal files, and then waits for - the operation to complete. See - <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry> - for details.</para></listitem> - </varlistentry> - - <varlistentry> - <term>SIGUSR2</term> - - <listitem><para>Request immediate rotation of the journal - files. The <command>journalctl --rotate</command> command uses - this signal to request journal file - rotation.</para></listitem> - </varlistentry> - - <varlistentry> - <term>SIGRTMIN+1</term> - - <listitem><para>Request that all unwritten log data is written - to disk. The <command>journalctl --sync</command> command uses - this signal to trigger journal synchronization, and then waits - for the operation to complete.</para></listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Kernel Command Line</title> - - <para>A few configuration parameters from - <filename>journald.conf</filename> may be overridden on the kernel - command line:</para> - - <variablelist class='kernel-commandline-options'> - <varlistentry> - <term><varname>systemd.journald.forward_to_syslog=</varname></term> - <term><varname>systemd.journald.forward_to_kmsg=</varname></term> - <term><varname>systemd.journald.forward_to_console=</varname></term> - <term><varname>systemd.journald.forward_to_wall=</varname></term> - - <listitem><para>Enables/disables forwarding of collected log - messages to syslog, the kernel log buffer, the system console - or wall. - </para> - - <para>See - <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry> - for information about these settings.</para> - </listitem> - - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>Access Control</title> - - <para>Journal files are, by default, owned and readable by the - <literal>systemd-journal</literal> system group but are not - writable. Adding a user to this group thus enables her/him to read - the journal files.</para> - - <para>By default, each logged in user will get her/his own set of - journal files in <filename>/var/log/journal/</filename>. These - files will not be owned by the user, however, in order to avoid - that the user can write to them directly. Instead, file system - ACLs are used to ensure the user gets read access only.</para> - - <para>Additional users and groups may be granted access to journal - files via file system access control lists (ACL). Distributions - and administrators may choose to grant read access to all members - of the <literal>wheel</literal> and <literal>adm</literal> system - groups with a command such as the following:</para> - - <programlisting># setfacl -Rnm g:wheel:rx,d:g:wheel:rx,g:adm:rx,d:g:adm:rx /var/log/journal/</programlisting> - - <para>Note that this command will update the ACLs both for - existing journal files and for future journal files created in the - <filename>/var/log/journal/</filename> directory.</para> - </refsect1> - - <refsect1> - <title>Files</title> - - <variablelist> - <varlistentry> - <term><filename>/etc/systemd/journald.conf</filename></term> - - <listitem><para>Configure - <command>systemd-journald</command> - behavior. See - <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>. - </para></listitem> - </varlistentry> - - <varlistentry> - <term><filename>/run/log/journal/<replaceable>machine-id</replaceable>/*.journal</filename></term> - <term><filename>/run/log/journal/<replaceable>machine-id</replaceable>/*.journal~</filename></term> - <term><filename>/var/log/journal/<replaceable>machine-id</replaceable>/*.journal</filename></term> - <term><filename>/var/log/journal/<replaceable>machine-id</replaceable>/*.journal~</filename></term> - - <listitem><para><command>systemd-journald</command> writes - entries to files in - <filename>/run/log/journal/<replaceable>machine-id</replaceable>/</filename> - or - <filename>/var/log/journal/<replaceable>machine-id</replaceable>/</filename> - with the <literal>.journal</literal> suffix. If the daemon is - stopped uncleanly, or if the files are found to be corrupted, - they are renamed using the <literal>.journal~</literal> - suffix, and <command>systemd-journald</command> starts writing - to a new file. <filename>/run</filename> is used when - <filename>/var/log/journal</filename> is not available, or - when <option>Storage=volatile</option> is set in the - <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry> - configuration file.</para></listitem> - </varlistentry> - - <varlistentry> - <term><filename>/dev/kmsg</filename></term> - <term><filename>/dev/log</filename></term> - <term><filename>/run/systemd/journal/dev-log</filename></term> - <term><filename>/run/systemd/journal/socket</filename></term> - <term><filename>/run/systemd/journal/stdout</filename></term> - - <listitem><para>Sockets and other paths that - <command>systemd-journald</command> will listen on that are - visible in the file system. In addition to these, journald can - listen for audit events using netlink.</para></listitem> - </varlistentry> - </variablelist> - </refsect1> - - <refsect1> - <title>See Also</title> - <para> - <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>journalctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>journald.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd.journal-fields</refentrytitle><manvolnum>7</manvolnum></citerefentry>, - <citerefentry><refentrytitle>sd-journal</refentrytitle><manvolnum>3</manvolnum></citerefentry>, - <citerefentry><refentrytitle>systemd-coredump</refentrytitle><manvolnum>8</manvolnum></citerefentry>, - <citerefentry project='die-net'><refentrytitle>setfacl</refentrytitle><manvolnum>1</manvolnum></citerefentry>, - <citerefentry><refentrytitle>sd_journal_print</refentrytitle><manvolnum>4</manvolnum></citerefentry>, - <command>pydoc systemd.journal</command> - </para> - </refsect1> - -</refentry> |