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systemd/man/networkctl.xml
Yu Watanabe 78281bd53a networkctl: allow to call 'networkctl cat' without arguments 
Then, show networkd.conf and its drop-ins.
2024-04-16 13:31:14 +09:00

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<?xml version='1.0'?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
<refentry id="networkctl" conditional='ENABLE_NETWORKD'
xmlns:xi="http://www.w3.org/2001/XInclude">
<refentryinfo>
<title>networkctl</title>
<productname>systemd</productname>
</refentryinfo>
<refmeta>
<refentrytitle>networkctl</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>networkctl</refname>
<refpurpose>Query or modify the status of network links</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>networkctl</command>
<arg choice="opt" rep="repeat">OPTIONS</arg>
<arg choice="plain">COMMAND</arg>
<arg choice="opt" rep="repeat">LINK</arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para><command>networkctl</command> may be used to query or modify the
state of the network links as seen by
<command>systemd-networkd</command>. Please refer to
<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
for an introduction to the basic concepts, functionality, and
configuration syntax.</para>
</refsect1>
<refsect1>
<title>Commands</title>
<para>The following commands are understood:</para>
<variablelist>
<varlistentry>
<term>
<command>list</command>
<optional><replaceable>PATTERN…</replaceable></optional>
</term>
<listitem>
<para>Show a list of existing links and their status. If one or more
<replaceable>PATTERN</replaceable>s are specified, only links matching one of them are shown.
If no further arguments are specified shows all links,
otherwise just the specified links. Produces output similar to:
<programlisting>IDX LINK TYPE OPERATIONAL SETUP
1 lo loopback carrier unmanaged
2 eth0 ether routable configured
3 virbr0 ether no-carrier unmanaged
4 virbr0-nic ether off unmanaged
4 links listed.</programlisting></para>
<para>The operational status is one of the following:
<variablelist>
<varlistentry>
<term>missing</term>
<listitem>
<para>The device is missing.</para>
<xi:include href="version-info.xml" xpointer="v245"/>
</listitem>
</varlistentry>
<varlistentry>
<term>off</term>
<listitem>
<para>The device is powered down.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>no-carrier</term>
<listitem>
<para>The device is powered up, but does not yet have a carrier.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>dormant</term>
<listitem>
<para>The device has a carrier, but is not yet ready for normal traffic.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>degraded-carrier</term>
<listitem>
<para>One of the bonding or bridge slave network interfaces is in off, no-carrier, or
dormant state, and the master interface has no address.</para>
<xi:include href="version-info.xml" xpointer="v242"/>
</listitem>
</varlistentry>
<varlistentry>
<term>carrier</term>
<listitem>
<para>The link has carrier, or for bond or bridge master, all bonding or bridge slave
network interfaces are enslaved to the master.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>degraded</term>
<listitem>
<para>The link has carrier and addresses valid on the local link configured. For bond or
bridge master this means that not all slave network interfaces have carrier but at least
one does.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>enslaved</term>
<listitem>
<para>The link has carrier and is enslaved to bond or bridge master network interface.
</para>
<xi:include href="version-info.xml" xpointer="v242"/>
</listitem>
</varlistentry>
<varlistentry>
<term>routable</term>
<listitem>
<para>The link has carrier and routable address configured. For bond or bridge master it is
not necessary for all slave network interfaces to have carrier, but at least one must.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
</variablelist>
</para>
<para>The setup status is one of the following:
<variablelist>
<varlistentry>
<term>pending</term>
<listitem>
<para><citerefentry><refentrytitle>systemd-udevd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
is still processing the link, we don't yet know if we will manage it.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>initialized</term>
<listitem>
<para><citerefentry><refentrytitle>systemd-udevd</refentrytitle><manvolnum>8</manvolnum></citerefentry>
has processed the link, but we don't yet know if we will manage it.</para>
<xi:include href="version-info.xml" xpointer="v251"/>
</listitem>
</varlistentry>
<varlistentry>
<term>configuring</term>
<listitem>
<para>Configuration for the link is being retrieved or the link is being configured.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>configured</term>
<listitem>
<para>Link has been configured successfully.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>unmanaged</term>
<listitem>
<para><command>systemd-networkd</command> is not handling the link.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>failed</term>
<listitem>
<para><command>systemd-networkd</command> failed to configure the link.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
<varlistentry>
<term>linger</term>
<listitem>
<para>The link is gone, but has not yet been dropped by <command>systemd-networkd</command>.</para>
<xi:include href="version-info.xml" xpointer="v240"/>
</listitem>
</varlistentry>
</variablelist>
</para>
<xi:include href="version-info.xml" xpointer="v219"/>
</listitem>
</varlistentry>
<varlistentry>
<term>
<command>status</command>
<optional><replaceable>PATTERN…</replaceable></optional>
</term>
<listitem>
<para>Show information about the specified links: type, state, kernel module driver, hardware and
IP address, configured DNS servers, etc. If one or more <replaceable>PATTERN</replaceable>s are
specified, only links matching one of them are shown.</para>
<para>When no links are specified, an overall network status is shown. Also see the option
<option>--all</option>.</para>
<para>Produces output similar to:
<programlisting>
● State: routable
Online state: online
Address: 10.193.76.5 on eth0
192.168.122.1 on virbr0
169.254.190.105 on eth0
fe80::5054:aa:bbbb:cccc on eth0
Gateway: 10.193.11.1 (CISCO SYSTEMS, INC.) on eth0
DNS: 8.8.8.8
8.8.4.4</programlisting></para>
<para>In the overall network status, the online state depends on the individual online state of all
required links. Managed links are required for online by default. In this case, the online state is
one of the following:
<variablelist>
<varlistentry>
<term>unknown</term>
<listitem>
<para>All links have unknown online status (i.e. there are no required links).</para>
<xi:include href="version-info.xml" xpointer="v249"/>
</listitem>
</varlistentry>
<varlistentry>
<term>offline</term>
<listitem>
<para>All required links are offline.</para>
<xi:include href="version-info.xml" xpointer="v249"/>
</listitem>
</varlistentry>
<varlistentry>
<term>partial</term>
<listitem>
<para>Some, but not all, required links are online.</para>
<xi:include href="version-info.xml" xpointer="v249"/>
</listitem>
</varlistentry>
<varlistentry>
<term>online</term>
<listitem>
<para>All required links are online.</para>
<xi:include href="version-info.xml" xpointer="v249"/>
</listitem>
</varlistentry>
</variablelist>
</para>
<xi:include href="version-info.xml" xpointer="v219"/>
</listitem>
</varlistentry>
<varlistentry>
<term>
<command>lldp</command>
<optional><replaceable>PATTERN…</replaceable></optional>
</term>
<listitem>
<para>Show discovered LLDP (Link Layer Discovery Protocol) neighbors. If one or more
<replaceable>PATTERN</replaceable>s are specified only neighbors on those interfaces are shown.
Otherwise shows discovered neighbors on all interfaces. Note that for this feature to work,
<varname>LLDP=</varname> must be turned on for the specific interface, see
<citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry> for
details.</para>
<para>Produces output similar to:
<programlisting>LINK SYSTEM-NAME SYSTEM-DESCRIPTION CHASSIS-ID PORT-ID PORT-DESCRIPTION CAPS
enp0s25 GS1900 - 00:e0:4c:00:00:00 2 Port #2 ..b........
Capability Flags:
o - Other; p - Repeater; b - Bridge; w - WLAN Access Point; r - Router;
t - Telephone; d - DOCSIS cable device; a - Station; c - Customer VLAN;
s - Service VLAN, m - Two-port MAC Relay (TPMR)
1 neighbor(s) listed.</programlisting></para>
<xi:include href="version-info.xml" xpointer="v219"/>
</listitem>
</varlistentry>
<varlistentry>
<term>
<command>label</command>
</term>
<listitem><para>Show numerical address labels that can be used for address selection.
This is the same information that
<citerefentry project='die-net'><refentrytitle>ip-addrlabel</refentrytitle><manvolnum>8</manvolnum></citerefentry>
shows. See <ulink url="https://tools.ietf.org/html/rfc3484">RFC 3484</ulink>
for a discussion of address labels.</para>
<para>Produces output similar to:
<programlisting>Prefix/Prefixlen Label
::/0 1
fc00::/7 5
fec0::/10 11
2002::/16 2
3ffe::/16 12
2001:10::/28 7
2001::/32 6
::ffff:0.0.0.0/96 4
::/96 3
::1/128 0</programlisting></para>
<xi:include href="version-info.xml" xpointer="v234"/>
</listitem>
</varlistentry>
<varlistentry>
<term>
<command>delete</command>
<replaceable>DEVICE…</replaceable>
</term>
<listitem><para>Deletes virtual netdevs. Takes interface name or index number.</para>
<xi:include href="version-info.xml" xpointer="v243"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>up</command>
<replaceable>DEVICE…</replaceable>
</term>
<listitem><para>Bring devices up. Takes interface name or index number.</para>
<xi:include href="version-info.xml" xpointer="v246"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>down</command>
<replaceable>DEVICE…</replaceable>
</term>
<listitem><para>Bring devices down. Takes interface name or index number.</para>
<xi:include href="version-info.xml" xpointer="v246"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>renew</command>
<replaceable>DEVICE…</replaceable>
</term>
<listitem><para>Renew dynamic configurations e.g. addresses received from DHCP server.
Takes interface name or index number.</para>
<xi:include href="version-info.xml" xpointer="v244"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>forcerenew</command>
<replaceable>DEVICE…</replaceable>
</term>
<listitem><para>Send a FORCERENEW message to all connected clients, triggering DHCP reconfiguration.
Takes interface name or index number.</para>
<xi:include href="version-info.xml" xpointer="v246"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>reconfigure</command>
<replaceable>DEVICE…</replaceable>
</term>
<listitem><para>Reconfigure network interfaces. Takes interface name or index number. Note that
this does not reload <filename>.netdev</filename> or <filename>.network</filename>
corresponding to the specified interface. So, if you edit config files, it is necessary to call
<command>networkctl reload</command> first to apply new settings.</para>
<xi:include href="version-info.xml" xpointer="v244"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>reload</command>
</term>
<listitem><para>Reload <filename>.netdev</filename> and <filename>.network</filename> files.
If a new <filename>.netdev</filename> file is found, then the corresponding netdev is created.
Note that even if an existing <filename>.netdev</filename> is modified or removed,
<command>systemd-networkd</command> does not update or remove the netdev.
If a new, modified or removed <filename>.network</filename> file is found, then all interfaces
which match the file are reconfigured.</para>
<xi:include href="version-info.xml" xpointer="v244"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>edit</command>
<replaceable>FILE</replaceable>|<replaceable>@DEVICE</replaceable>…
</term>
<listitem><para>Edit network configuration files, which include <filename>.network</filename>,
<filename>.netdev</filename>, and <filename>.link</filename> files. If no network config file
matching the given name is found, a new one will be created under <filename>/etc/</filename> or
<filename>/run/</filename>, depending on whether <option>--runtime</option> is specified.
Specially, if the name is prefixed by <literal>@</literal>, it will be treated as
a network interface, and editing will be performed on the network config files associated
with it. Additionally, the interface name can be suffixed with <literal>:network</literal> (default)
or <literal>:link</literal>, in order to choose the type of network config to operate on.</para>
<para>If <option>--drop-in=</option> is specified, edit the drop-in file instead of
the main configuration file. Unless <option>--no-reload</option> is specified,
<command>systemd-networkd</command> will be reloaded after the edit of the
<filename>.network</filename> or <filename>.netdev</filename> files finishes.
The same applies for <filename>.link</filename> files and
<citerefentry><refentrytitle>systemd-udevd</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
Note that the changed link settings are not automatically applied after reloading.
To achieve that, trigger uevents for the corresponding interface. Refer to
<citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for more information.</para>
<xi:include href="version-info.xml" xpointer="v254"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>cat</command>
<optional><replaceable>FILE</replaceable>|<replaceable>@DEVICE</replaceable>…</optional>
</term>
<listitem>
<para>Show network configuration files. This command honors the <literal>@</literal> prefix in the
same way as <command>edit</command>. When no argument is specified,
<citerefentry><refentrytitle>networkd.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>
and its drop-in files will be shown.</para>
<xi:include href="version-info.xml" xpointer="v254"/>
</listitem>
</varlistentry>
<varlistentry>
<term>
<command>mask</command>
<replaceable>FILE</replaceable>…
</term>
<listitem><para>Mask network configuration files, which include <filename>.network</filename>,
<filename>.netdev</filename>, and <filename>.link</filename> files. A symlink of the given name will
be created under <filename>/etc/</filename> or <filename>/run/</filename>, depending on
whether <option>--runtime</option> is specified, that points to <filename>/dev/null</filename>.
If a non-empty config file with the specified name exists under the target directory or a directory
with higher priority (e.g. <option>--runtime</option> is used while an existing config resides
in <filename>/etc/</filename>), the operation is aborted.</para>
<para>This command honors <option>--no-reload</option> in the same way as <command>edit</command>.
</para>
<xi:include href="version-info.xml" xpointer="v256"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>unmask</command>
<replaceable>FILE</replaceable>…
</term>
<listitem><para>Unmask network configuration files, i.e. reverting the effect of <command>mask</command>.
Note that this command operates regardless of the scope of the directory, i.e. <option>--runtime</option>
is of no effect.</para>
<para>This command honors <option>--no-reload</option> in the same way as <command>edit</command>
and <command>mask</command>.</para>
<xi:include href="version-info.xml" xpointer="v256"/></listitem>
</varlistentry>
<varlistentry>
<term>
<command>persistent-storage</command>
<replaceable>BOOL</replaceable>
</term>
<listitem>
<para>Notify <filename>systemd-networkd.service</filename> that the persistent storage for the
service is ready. This is called by
<filename>systemd-networkd-persistent-storage.service</filename>. Usually, this command should not
be called manually by users or administrators.</para>
<xi:include href="version-info.xml" xpointer="v256"/>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Options</title>
<para>The following options are understood:</para>
<variablelist>
<varlistentry>
<term>
<option>-a</option>
<option>--all</option>
</term>
<listitem>
<para>Show all links with <command>status</command>.</para>
<xi:include href="version-info.xml" xpointer="v219"/>
</listitem>
</varlistentry>
<varlistentry>
<term>
<option>-s</option>
<option>--stats</option>
</term>
<listitem>
<para>Show link statistics with <command>status</command>.</para>
<xi:include href="version-info.xml" xpointer="v243"/>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-l</option></term>
<term><option>--full</option></term>
<listitem>
<para>Do not ellipsize the output.</para>
<xi:include href="version-info.xml" xpointer="v245"/>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-n</option></term>
<term><option>--lines=</option></term>
<listitem>
<para>When used with <command>status</command>, controls the number of journal lines to show,
counting from the most recent ones. Takes a positive integer argument. Defaults to 10.</para>
<xi:include href="version-info.xml" xpointer="v245"/>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--drop-in=<replaceable>NAME</replaceable></option></term>
<listitem>
<para>When used with <command>edit</command>, edit the drop-in file <replaceable>NAME</replaceable>
instead of the main configuration file.</para>
<xi:include href="version-info.xml" xpointer="v254"/>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--no-reload</option></term>
<listitem>
<para>When used with <command>edit</command>, <command>mask</command>, or <command>unmask</command>,
<citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
or
<citerefentry><refentrytitle>systemd-udevd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
will not be reloaded after the operation finishes.</para>
<xi:include href="version-info.xml" xpointer="v254"/>
</listitem>
</varlistentry>
<varlistentry>
<term><option>--runtime</option></term>
<listitem>
<para>When used with <command>edit</command> or <command>mask</command>,
operate on the file under <filename>/run/</filename> instead of <filename>/etc/</filename>.</para>
<xi:include href="version-info.xml" xpointer="v256"/>
</listitem>
</varlistentry>
<xi:include href="standard-options.xml" xpointer="json" />
<xi:include href="standard-options.xml" xpointer="help" />
<xi:include href="standard-options.xml" xpointer="version" />
<xi:include href="standard-options.xml" xpointer="no-legend" />
<xi:include href="standard-options.xml" xpointer="no-pager" />
</variablelist>
</refsect1>
<refsect1>
<title>Exit status</title>
<para>On success, 0 is returned, a non-zero failure code otherwise.</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para><simplelist type="inline">
<member><citerefentry><refentrytitle>systemd-networkd.service</refentrytitle><manvolnum>8</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>systemd.network</refentrytitle><manvolnum>5</manvolnum></citerefentry></member>
<member><citerefentry><refentrytitle>systemd.netdev</refentrytitle><manvolnum>5</manvolnum></citerefentry></member>
<member><citerefentry project='die-net'><refentrytitle>ip</refentrytitle><manvolnum>8</manvolnum></citerefentry></member>
</simplelist></para>
</refsect1>
</refentry>
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