-<?xml version='1.0'?> <!--*- Mode: nxml; nxml-child-indent: 2; indent-tabs-mode: nil -*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+<?xml version='1.0'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
-<!--
- This file is part of systemd.
-
- Copyright 2017 Dmitry Rozhkov
-
- 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.dnssd" conditional='ENABLE_RESOLVE'>
+<refentry id="systemd.dnssd"
+ xmlns:xi="http://www.w3.org/2001/XInclude"
+ conditional='ENABLE_RESOLVE'>
<refentryinfo>
<title>systemd.dnssd</title>
<productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Dmitry</firstname>
- <surname>Rozhkov</surname>
- <email>dmitry.rozhkov@intel.com</email>
- </author>
- </authorgroup>
</refentryinfo>
<refmeta>
<para>The main network service file must have the extension <filename>.dnssd</filename>; other
extensions are ignored.</para>
- <para>The <filename>.dnssd</filename> files are read from the files located in the system
- network directory <filename>/usr/lib/systemd/dnssd</filename>, the volatile runtime network
- directory <filename>/run/systemd/dnssd</filename> and the local administration network
- directory <filename>/etc/systemd/dnssd</filename>. All configuration files are collectively
- sorted and processed in lexical order, regardless of the directories in which they live.
- However, files with identical filenames replace each other. Files in <filename>/etc</filename>
- have the highest priority, files in <filename>/run</filename> take precedence over files with
- the same name in <filename>/usr/lib</filename>. This can be used to override a system-supplied
- configuration file with a local file if needed.</para>
+ <para>The <filename>.dnssd</filename> files are read from the files located in the system network
+ directories <filename>/usr/lib/systemd/dnssd</filename> and
+ <filename>/usr/local/lib/systemd/dnssd</filename>, the volatile runtime network directory
+ <filename>/run/systemd/dnssd</filename> and the local administration network directory
+ <filename>/etc/systemd/dnssd</filename>. All configuration files are collectively sorted and processed in
+ lexical order, regardless of the directories in which they live. However, files with identical filenames
+ replace each other. Files in <filename>/etc</filename> have the highest priority, files in
+ <filename>/run</filename> take precedence over files with the same name in
+ <filename>/usr/lib</filename>. This can be used to override a system-supplied configuration file with a
+ local file if needed.</para>
<para>Along with the network service file <filename>foo.dnssd</filename>, a "drop-in" directory
<filename>foo.dnssd.d/</filename> may exist. All files with the suffix
parsed. This is useful to alter or add configuration settings, without having to modify the main
configuration file. Each drop-in file must have appropriate section headers.</para>
- <para>In addition to <filename>/etc/systemd/dnssd</filename>, drop-in <literal>.d</literal>
- directories can be placed in <filename>/usr/lib/systemd/dnssd</filename> or
- <filename>/run/systemd/dnssd</filename> directories. Drop-in files in
- <filename>/etc</filename> take precedence over those in <filename>/run</filename> which in turn
- take precedence over those in <filename>/usr/lib</filename>. Drop-in files under any of these
- directories take precedence over the main network service file wherever located. (Of course, since
- <filename>/run</filename> is temporary and <filename>/usr/lib</filename> is for vendors, it is
- unlikely drop-ins should be used in either of those places.)</para>
+ <para>In addition to <filename>/etc/systemd/dnssd</filename>, drop-in <literal>.d</literal> directories
+ can be placed in <filename>/usr/lib/systemd/dnssd</filename> or <filename>/run/systemd/dnssd</filename>
+ directories. Drop-in files in <filename>/etc</filename> take precedence over those in
+ <filename>/run</filename> which in turn take precedence over those in <filename>/usr/lib</filename> or
+ <filename>/usr/local/lib</filename>. Drop-in files under any of these directories take precedence over
+ the main network service file wherever located.</para>
</refsect1>
<refsect1>
<title>[Service] Section Options</title>
- <para>The network service file contains a <literal>[Service]</literal>
+ <para>The network service file contains a [Service]
section, which specifies a discoverable network service announced in a
local network with Multicast DNS broadcasts.</para>
<para>An instance name of the network service as defined in the section 4.1.1 of <ulink
url="https://tools.ietf.org/html/rfc6763">RFC 6763</ulink>, e.g. <literal>webserver</literal>.</para>
<para>The option supports simple specifier expansion. The following expansions are understood:</para>
- <table>
+ <table class='specifiers'>
<title>Specifiers available</title>
<tgroup cols='3' align='left' colsep='1' rowsep='1'>
<colspec colname="spec" />
</row>
</thead>
<tbody>
- <row>
- <entry><literal>%m</literal></entry>
- <entry>Machine ID</entry>
- <entry>The machine ID of the running system, formatted as string. See <citerefentry><refentrytitle>machine-id</refentrytitle><manvolnum>5</manvolnum></citerefentry> for more information.</entry>
- </row>
- <row>
- <entry><literal>%b</literal></entry>
- <entry>Boot ID</entry>
- <entry>The boot ID of the running system, formatted as string. See <citerefentry><refentrytitle>random</refentrytitle><manvolnum>4</manvolnum></citerefentry> for more information.</entry>
- </row>
- <row>
- <entry><literal>%H</literal></entry>
- <entry>Host name</entry>
- <entry>The hostname of the running system.</entry>
- </row>
- <row>
- <entry><literal>%v</literal></entry>
- <entry>Kernel release</entry>
- <entry>Identical to <command>uname -r</command> output.</entry>
- </row>
+ <xi:include href="standard-specifiers.xml" xpointer="a"/>
+ <xi:include href="standard-specifiers.xml" xpointer="b"/>
+ <xi:include href="standard-specifiers.xml" xpointer="B"/>
+ <xi:include href="standard-specifiers.xml" xpointer="H"/>
+ <xi:include href="standard-specifiers.xml" xpointer="m"/>
+ <xi:include href="standard-specifiers.xml" xpointer="o"/>
+ <xi:include href="standard-specifiers.xml" xpointer="v"/>
+ <xi:include href="standard-specifiers.xml" xpointer="w"/>
+ <xi:include href="standard-specifiers.xml" xpointer="W"/>
+ <xi:include href="standard-specifiers.xml" xpointer="percent"/>
</tbody>
</tgroup>
</table>
<para>This makes the http server running on the host discoverable in the local network
given MulticastDNS is enabled on the network interface.</para>
- <para>Now the utility <literal>systemd-resolve</literal> should be able to resolve the
+ <para>Now the utility <literal>resolvectl</literal> should be able to resolve the
service to the host's name:</para>
- <programlisting>$ systemd-resolve --service meteo._http._tcp.local
+ <programlisting>$ resolvectl service meteo._http._tcp.local
meteo._http._tcp.local: meteo.local:80 [priority=0, weight=0]
169.254.208.106%senp0s21f0u2u4
fe80::213:3bff:fe49:8aa%senp0s21f0u2u4
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+ <citerefentry><refentrytitle>systemd-resolved.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>resolvectl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
</para>
</refsect1>
projects / thirdparty / systemd.git / blobdiff