| SYSTEMD-NETWORKD-WAIT-ONLINE.SERVICE(8) | systemd-networkd-wait-online.service | SYSTEMD-NETWORKD-WAIT-ONLINE.SERVICE(8) |
.SH "NAME" systemd-networkd-wait-online.service,
systemd-networkd-wait-online@.service, systemd-networkd-wait-online - Wait
for network to come online
.SH "SYNOPSIS"
.PP systemd-networkd-wait-online.service
.PP systemd-networkd-wait-online@.service
.PP /usr/lib/systemd/systemd-networkd-wait-online
.SH "DESCRIPTION"
.PP 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.
.PP 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.
.PP 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.
.SH "OPTIONS"
.PP The following options are understood:
.PP -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.
.RE
.PP --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.
.RE
.PP -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.
.RE
.PP -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.
.RE
.PP -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.
.RE
.PP --dns
Waiting for DNS servers to be accessible on each interface. 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
accessible DNS server.
If a link has the property DefaultRoute=yes (either because the
DNSDefaultRoute= network property is explicitly configured, or
because the link does not have any "routing-only" domains), or if
the search domain "." is configured, then wait for link-specific
DNS servers to be accessible. Otherwise, allow global DNS servers to satisfy
the condition.
Added in version 258.
.RE
.PP --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.
.RE
.PP --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.
.RE
.PP -q, --quiet
Suppress log messages.
Added in version 242.
.RE
.PP -h, --help
Print a short help text and exit.
.RE
.PP --version
Print a short version string and exit.
.RE
.SH "SEE ALSO"
.PP systemd(1), systemd.service(5),
systemd-networkd.service(8), networkctl(1)
| systemd 262.2 |