mirror of
https://github.com/systemd/systemd
synced 2024-11-02 19:41:12 +00:00
32e2767080
In most cases we refernced the concept as "initrd". Let's convert most
remaining uses of "initramfs" to "initrd" too, to stay internally
consistent.
This leaves "initramfs" only where it's relevant to explain historical
concepts or where "initramfs" is part of the API (i.e. in
/run/initramfs).
Follow-up for: b66a6e1a58
97 lines
4.6 KiB
XML
97 lines
4.6 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="systemd-networkd.service" conditional='ENABLE_NETWORKD'>
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<refentryinfo>
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<title>systemd-networkd.service</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-networkd.service</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-networkd.service</refname>
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<refname>systemd-networkd</refname>
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<refpurpose>Network manager</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-networkd.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-networkd</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-networkd</command> is a system service that
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manages networks. It detects and configures network devices as
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they appear, as well as creating virtual network devices.</para>
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<para>To configure low-level link settings independently of
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networks, see
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<citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
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<para><command>systemd-networkd</command> will create network devices based
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on the configuration in
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<citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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files, respecting the [Match] sections in those files.</para>
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<para><command>systemd-networkd</command> will manage network addresses and
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routes for any link for which it finds a <filename>.network</filename> file
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with an appropriate [Match] section, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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For those links, it will flush existing network addresses and routes when
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bringing up the device. Any links not matched by one of the
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<filename>.network</filename> files will be ignored. It is also possible to
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explicitly tell <filename>systemd-networkd</filename> to ignore a link by
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using <varname>Unmanaged=yes</varname> option, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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<para>When <filename>systemd-networkd</filename> exits, it generally leaves existing network devices and
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configuration intact. This makes it possible to transition from the initrd and to restart the service
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without breaking connectivity. This also means that when configuration is updated and
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<filename>systemd-networkd</filename> is restarted, netdev interfaces for which configuration was removed
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will not be dropped, and may need to be cleaned up manually.</para>
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<para><command>systemd-networkd</command> may be introspected and controlled at runtime using
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<citerefentry><refentrytitle>networkctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
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</para>
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</refsect1>
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<refsect1><title>Configuration Files</title>
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<para>The configuration files are read from the files located in the
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system network directory <filename>/usr/lib/systemd/network</filename>,
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the volatile runtime network directory
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<filename>/run/systemd/network</filename> and the local administration
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network directory <filename>/etc/systemd/network</filename>.</para>
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<para>Networks are configured in <filename>.network</filename>
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files, see
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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and virtual network devices are configured in
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<filename>.netdev</filename> files, see
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<citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>networkctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-networkd-wait-online.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-network-generator.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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