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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | COLOPHON |
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SYSTE...ERVICE(8) systemd-networkd-wait-online.service SYSTE...ERVICE(8)
systemd-networkd-wait-online.service, systemd-networkd-wait-
online@.service, systemd-networkd-wait-online - Wait for network
to come online
systemd-networkd-wait-online.service
systemd-networkd-wait-online@.service
/usr/lib/systemd/systemd-networkd-wait-online
systemd-networkd-wait-online is a oneshot system service (see
systemd.service(5)), that waits for the network to be configured.
By default, it will wait for all links it is aware of and which
are managed by systemd-networkd.service(8) to be fully configured
or failed, and for at least one link to be online. Here, online
means that the link's operational state is equal or higher than
"degraded". The threshold can be configured by
--operational-state= option.
The service systemd-networkd-wait-online.service invokes
systemd-networkd-wait-online without any options. Thus, it waits
for all managed interfaces to be configured or failed, and for at
least one to be online.
The service systemd-networkd-wait-online@.service takes an
interface name, and invokes systemd-networkd-wait-online with -i
and the specified interface name. Thus, wait for the specified
interface to be configured and online. For example,
systemd-networkd-wait-online@eth0.service waits for eth0 to be
configured by systemd-networkd and online.
The following options are understood:
-i INTERFACE[:MIN_OPERSTATE[:MAX_OPERSTATE]],
--interface=INTERFACE[:MIN_OPERSTATE[:MAX_OPERSTATE]]
Network interface to wait for before deciding if the system
is online. This is useful when a system has several
interfaces which will be configured, but a particular one is
necessary to access some network resources. When used, all
other interfaces are ignored. This option may be used more
than once to wait for multiple network interfaces. When this
option is specified multiple times, then
systemd-networkd-wait-online waits for all specified
interfaces to be online. Optionally, required minimum and
maximum operational states can be specified after a colon
":". Please see networkctl(1) for possible operational
states. If the operational state is not specified here, then
the value from RequiredForOnline= in the corresponding
.network file is used if present, and "degraded" otherwise.
Added in version 213.
--ignore=INTERFACE
Network interfaces to be ignored when deciding if the system
is online. By default, only the loopback interface is
ignored. This option may be used more than once to ignore
multiple network interfaces.
Added in version 219.
-o MIN_OPERSTATE[:MAX_OPERSTATE],
--operational-state=MIN_OPERSTATE[:MAX_OPERSTATE]
Takes a minimum operational state and an optional maximum
operational state. Please see networkctl(1) for possible
operational states. If set, the specified value overrides
RequiredForOnline= settings in .network files. But this does
not override operational states specified in --interface=
option.
Added in version 242.
-4, --ipv4
Waiting for an IPv4 address of each network interface to be
configured. If this option is specified with --any, then
systemd-networkd-wait-online exits with success when at least
one interface becomes online and has an IPv4 address. If the
required minimum operational state is below "routable", then
each link (or at least one link with --any) must have an IPv4
link-local or routable address. If the required minimum
operational state is "routable", then each link must have an
IPv4 routable address.
If neither --ipv4 nor --ipv6 is specified, then the value
from RequiredFamilyForOnline= in the corresponding .network
file is used if present.
Added in version 249.
-6, --ipv6
Waiting for an IPv6 address of each network interface to be
configured. If this option is specified with --any, then
systemd-networkd-wait-online exits with success when at least
one interface becomes online and has an IPv6 address. If the
required minimum operational state is below "routable", then
each link (or at least one link with --any) must have an IPv6
link-local or routable address. If the required minimum
operational state is "routable", then each link must have an
IPv6 routable address.
If neither --ipv4 nor --ipv6 is specified, then the value
from RequiredFamilyForOnline= in the corresponding .network
file is used if present.
Added in version 249.
--any
Even if several interfaces are in configuring state,
systemd-networkd-wait-online exits with success when at least
one interface becomes online. When this option is specified
with --interface=, then systemd-networkd-wait-online waits
for one of the specified interfaces to be online. This option
is useful when some interfaces may not have carrier on boot.
Added in version 242.
--timeout=SECS
Fail the service if the network is not online by the time the
timeout elapses. A timeout of 0 disables the timeout.
Defaults to 120 seconds.
Added in version 219.
-q, --quiet
Suppress log messages.
Added in version 242.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
systemd(1), systemd.service(5), systemd-networkd.service(8),
networkctl(1)
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have
a bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2024-06-13.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
systemd 257~devel SYSTE...ERVICE(8)
Pages that refer to this page: systemd.network(5), systemd.directives(7), systemd.index(7), systemd-networkd.service(8)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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