NETWORKMANAGER(8) Network management daemons NETWORKMANAGER(8)NAMENetworkManager - network management daemon
SYNOPSISNetworkManager [OPTIONS...]
DESCRIPTION
The NetworkManager daemon attempts to make networking configuration and
operation as painless and automatic as possible by managing the primary
network connection and other network interfaces, like Ethernet, WiFi,
and Mobile Broadband devices. NetworkManager will connect any network
device when a connection for that device becomes available, unless that
behavior is disabled. Information about networking is exported via a
D-Bus interface to any interested application, providing a rich API
with which to inspect and control network settings and operation.
DISPATCHER SCRIPTSNetworkManager will execute scripts in the
/etc/NetworkManager/dispatcher.d directory in alphabetical order in
response to network events. Each script should be a regular executable
file, owned by root. Furthermore, it must not be writable by group or
other, and not setuid.
Each script receives two arguments, the first being the interface name
of the device an operation just happened on, and second the action.
The actions are:
up
The interface has been activated.
down
The interface has been deactivated.
vpn-up
A VPN connection has been activated.
vpn-down
A VPN connection has been deactivated.
hostname
The system hostname has been updated. Use gethostname(2) to
retrieve it. The interface name (first argument) is empty and no
environment variable is set for this action.
dhcp4-change
The DHCPv4 lease has changed (renewed, rebound, etc).
dhcp6-change
The DHCPv6 lease has changed (renewed, rebound, etc).
The environment contains more information about the interface and the
connection. The following variables are available for the use in the
dispatcher scripts:
CONNECTION_UUID
The UUID of the connection profile.
CONNECTION_ID
The name (ID) of the connection profile.
DEVICE_IFACE
The interface name of the device.
DEVICE_IP_IFACE
The IP interface name of the device.
IP4_ADDRESS_N
The IPv4 address in the format "address/prefix gateway", where N is
a number from 0 to (# IPv4 address \- 1).
IP4_NUM_ADDRESSES
The variable contains the number of IPv4 addresses the script may
expect.
IP4_ROUTE_N
The IPv4 route in the format "address/prefix next-hop metric",
where N is a number from 0 to (# IPv4 routes \- 1).
IP4_NUM_ROUTES
The variable contains the number of IPv4 routes the script may
expect.
IP4_NAMESERVERS
The variable contains a space-separated list of the DNS servers.
IP4_DOMAINS
The variable contains a space-separated list of the search domains.
DHCP4_<dhcp-option-name>
If the connection used DHCP for address configuration, the received
DHCP configuration is passed in the environment using standard DHCP
option names, prefixed with "DHCP4_", like
"DHCP4_HOST_NAME=foobar".
IP6_<name> and DHCP6_<name>
The same variables as for IPv4 are available for IPv6, but the
prefixes are IP6_ and DHCP6_ instead.
In case of VPN, VPN_IP_IFACE is set, and IP4_*, IP6_* variables with
VPN prefix are exported too, like VPN_IP4_ADDRESS_0,
VPN_IP4_NUM_ADDRESSES.
OPTIONS
The following options are understood:
--version | -V
Print the NetworkManager software version and exit.
--help | -h
Print NetworkManager's available options and exit.
--no-daemon | -n
Do not daemonize.
--debug | -d
Do not daemonize, and direct log output to the controlling terminal
in addition to syslog.
--pid-file | -p
Specify location of a PID file. The PID file is used for storing
PID of the running proccess and prevents running multiple
instances.
--state-file
Specify file for storing state of the NetworkManager persistently.
If not specified, the default value of
/var/lib/NetworkManager/NetworkManager.state is used.
--config
Specify configuration file to set up various settings for
NetworkManager. If not specified, the default value of
/etc/NetworkManager/NetworkManager.conf is used with a fallback to
the older 'nm\-system\-settings.conf' if located in the same
directory. See NetworkManager.conf(5) for more information on
configuration file.
--plugins
List plugins used to manage system-wide connection settings. This
list has preference over plugins specified in the configuration
file. Currently supported plugins are: keyfile, ifcfg-rh,
ifcfg-suse, ifupdown.
--log-level
Sets how much information NetworkManager sends to the log
destination (usually syslog's "daemon" facility). By default, only
informational, warning, and error messages are logged. See the
section on logging in NetworkManager.conf(5) for more information.
--log-domains
A comma-separated list specifying which operations are logged to
the log destination (usually syslog). By default, most domains are
logging-enabled. See the section on logging in
NetworkManager.conf(5) for more information.
DEBUGGING
The following environment variables are supported to help debugging.
When used in conjunction with the --no-daemon option (thus echoing PPP
and DHCP helper output to stdout) these can quickly help pinpoint the
source of connection issues. Also see the --log-level and --log-domains
to enable debug logging inside NetworkManager itself.
NM_PPP_DEBUG: When set to anything, causes NetworkManager to turn on
PPP debugging in pppd, which logs all PPP and PPTP frames and
client/server exchanges.
SEE ALSONetworkManager.conf(5), nmcli(1), nmcli-examples(5), nm-online(1), nm-
settings(5), nm-applet(1), nm-connection-editor(1)NetworkManager 0.9.10NETWORKMANAGER(8)
