130 lines
6.4 KiB
XML
130 lines
6.4 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-wait-online.service" conditional='ENABLE_NETWORKD'
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-networkd-wait-online.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-wait-online.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-wait-online.service</refname>
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<refname>systemd-networkd-wait-online</refname>
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<refpurpose>Wait for network to come online</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-networkd-wait-online.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-networkd-wait-online</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-wait-online</command> is a
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oneshot system service (see <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>), that waits for the network to be
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configured. By default, it will wait for all links it is aware of
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and which are managed by
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<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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to be fully configured or failed, and for at least one link to be online. Here, online means that
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the link's operational state is equal or higher than <literal>degraded</literal>. The threshold
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can be configured by <option>--operational-state=</option> option.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>-i</option> <replaceable>INTERFACE</replaceable><optional>:<replaceable>MIN_OPERSTATE</replaceable><optional>:<replaceable>MAX_OPERSTATE</replaceable></optional></optional></term>
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<term><option>--interface=</option><replaceable>INTERFACE</replaceable><optional>:<replaceable>MIN_OPERSTATE</replaceable><optional>:<replaceable>MAX_OPERSTATE</replaceable></optional></optional></term>
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<listitem><para>Network interface to wait for before deciding if the system is online. This
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is useful when a system has several interfaces which will be configured, but a particular
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one is necessary to access some network resources. When used, all other interfaces are ignored.
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This option may be used more than once to wait for multiple network interfaces. When this
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option is specified multiple times, then <command>systemd-networkd-wait-online</command> waits
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for all specified interfaces to be online. Optionally, required minimum and maximum operational
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states can be specified after a colon <literal>:</literal>. Please see
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<citerefentry><refentrytitle>networkctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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for possible operational states. If the operational state is not specified here, then
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the value from <varname>RequiredForOnline=</varname> in the corresponding
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<filename>.network</filename> file is used if present, and <literal>degraded</literal> otherwise.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--ignore=</option><replaceable>INTERFACE</replaceable></term>
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<listitem><para>Network interfaces to be ignored when deciding
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if the system is online. By default, only the loopback
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interface is ignored. This option may be used more than once
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to ignore multiple network interfaces. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-o</option> <replaceable>MIN_OPERSTATE</replaceable><optional>:<replaceable>MAX_OPERSTATE</replaceable></optional></term>
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<term><option>--operational-state=</option><replaceable>MIN_OPERSTATE</replaceable><optional>:<replaceable>MAX_OPERSTATE</replaceable></optional></term>
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<listitem><para>Takes a minimum operational state and an optional maximum operational state.
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Please see <citerefentry><refentrytitle>networkctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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for possible operational states. If set, the specified value overrides
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<varname>RequiredForOnline=</varname> settings in <filename>.network</filename> files.
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But this does not override operational states specified in <option>--interface=</option> option.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--any</option></term>
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<listitem><para>Even if several interfaces are in configuring state,
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<command>systemd-networkd-wait-online</command> exits with success when at least one interface
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becomes online. When this option is specified with <option>--interface=</option>, then
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<command>systemd-networkd-wait-online</command> waits for one of the specified interfaces to be
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online. This option is useful when some interfaces may not have carrier on boot.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--timeout=</option><replaceable>SECS</replaceable></term>
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<listitem><para>Fail the service if the network is not online
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by the time the timeout elapses. A timeout of 0 disables the
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timeout. Defaults to 120 seconds. </para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-q</option></term>
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<term><option>--quiet</option></term>
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<listitem><para>Suppress log messages.</para></listitem>
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</varlistentry>
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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</variablelist>
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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>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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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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</refentry>
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