NETWORKMANAGER.CON(5) Configuration NETWORKMANAGER.CON(5)NAMENetworkManager.conf - NetworkManager configuration file
SYNOPSIS
/etc/NetworkManager/NetworkManager.conf,
/etc/NetworkManager/conf.d/name.conf
DESCRIPTION
This is a configuration file for NetworkManager. It is used to set up
various aspects of NetworkManager's behavior. The location of the file
may be changed through use of the --config argument for NetworkManager.
If a default NetworkManager.conf is provided by your distribution's
packages, you should not modify it, since your changes may get
overwritten by package updates. Instead, you can add additional .conf
files to the conf.d directory. These will be read in order, with later
files overriding earlier ones.
FILE FORMAT
The configuration file format is so-called key file (sort of ini-style
format). It consists of sections (groups) of key-value pairs. Lines
beginning with a '#' and blank lines are considered comments. Sections
are started by a header line containing the section enclosed in '[' and
']', and ended implicitly by the start of the next section or the end
of the file. Each key-value pair must be contained in a section.
For keys that take a list of devices as their value, you can specify
devices by their MAC addresses or interface names, or "*" to specify
all devices.
Minimal system settings configuration file looks like this:
[main]
plugins=keyfile
As an extension to the normal keyfile format, you can also append a
value to a previously-set list-valued key by doing:
plugins+=another-plugin
MAIN SECTION (MANDATORY)
plugins
List system settings plugin names separated by ','. These plugins
are used to read/write system-wide connection. When more plugins
are specified, the connections are read from all listed plugins.
When writing connections, the plugins will be asked to save the
connection in the order listed here. If the first plugin cannot
write out that connection type, or can't write out any connections,
the next plugin is tried. If none of the plugins can save the
connection, the error is returned to the user. See below for
available plugins.
monitor-connection-files
Whether the configured settings plugin(s) should set up file
monitors and immediately pick up changes made to connection files
while NetworkManager is running. This is disabled by default;
NetworkManager will only read the connection files at startup, and
when explicitly requested via the ReloadConnections D-Bus call. If
this key is set to 'true', then NetworkManager will reload
connection files any time they changed.
dhcp
This key sets up what DHCP client NetworkManager will use.
Presently dhclient and dhcpcd are supported. The client configured
here should be available on your system too. If this key is
missing, available DHCP clients are looked for in this order:
dhclient, dhcpcd.
no-auto-default
Comma-separated list of devices for which NetworkManager shouldn't
create default wired connection (Auto eth0). By default,
NetworkManager creates a temporary wired connection for any
Ethernet device that is managed and doesn't have a connection
configured. List a device in this option to inhibit creating the
default connection for the device. May have the special value * to
apply to all devices.
When the default wired connection is deleted or saved to a new
persistent connection by a plugin, the device is added to a list in
the file /var/run/NetworkManager/no-auto-default.state to prevent
creating the default connection for that device again.
no-auto-default=00:22:68:5c:5d:c4,00:1e:65:ff:aa:ee
no-auto-default=eth0,eth1
no-auto-default=*
ignore-carrier
Comma-separated list of devices for which NetworkManager will
(partially) ignore the carrier state. Normally, for device types
that support carrier-detect, such as Ethernet and InfiniBand,
NetworkManager will only allow a connection to be activated on the
device if carrier is present (ie, a cable is plugged in), and it
will deactivate the device if carrier drops for more than a few
seconds.
Listing a device here will allow activating connections on that
device even when it does not have carrier, provided that the
connection uses only statically-configured IP addresses.
Additionally, it will allow any active connection (whether static
or dynamic) to remain active on the device when carrier is lost.
May have the special value * to apply to all devices.
Note that the "carrier" property of NMDevices and device D-Bus
interfaces will still reflect the actual device state; it's just
that NetworkManager will not make use of that information.
dns
Set the DNS (resolv.conf) processing mode.
default: The default if the key is not specified. NetworkManager
will update resolv.conf to reflect the nameservers provided by
currently active connections.
dnsmasq: NetworkManager will run dnsmasq as a local caching
nameserver, using a "split DNS" configuration if you are connected
to a VPN, and then update resolv.conf to point to the local
nameserver.
none: NetworkManager will not modify resolv.conf.
KEYFILE SECTION
This section contains keyfile-specific options and thus only has effect
when using the keyfile plugin.
hostname
Set a persistent hostname.
unmanaged-devices
Set devices that should be ignored by NetworkManager when using the
keyfile plugin. Devices are specified in the following format:
mac:<hwaddr> or interface-name:<ifname>. Here hwaddr is the MAC
address of the device to be ignored, in hex-digits-and-colons
notation. ifname is the interface name of the ignored device.
Multiple entries are separated with semicolons. No spaces are
allowed in the value.
Example:
unmanaged-devices=interface-name:em4
unmanaged-devices=mac:00:22:68:1c:59:b1;mac:00:1E:65:30:D1:C4;interface-name:eth2
IFUPDOWN SECTION
This section contains keyfile-specific options and thus only has effect
when using the ifdown plugin.
managed
If set to true, then interfaces listed in /etc/network/interfaces
are managed by NetworkManager. If set to false, then any interface
listed in /etc/network/interfaces will be ignored by
NetworkManager. Remember that NetworkManager controls the default
route, so because the interface is ignored, NetworkManager may
assign the default route to some other interface.
The default value is false.
LOGGING SECTION
This section controls NetworkManager's logging. Any settings here are
overridden by the --log-level and --log-domains command-line options.
level
One of ERR, WARN, INFO, DEBUG. The ERR level logs only critical
errors. WARN logs warnings that may reflect operation. INFO logs
various informational messages that are useful for tracking state
and operations. DEBUG enables verbose logging for debugging
purposes. Subsequent levels also log all messages from earlier
levels; thus setting the log level to INFO also logs error and
warning messages.
domains
The following log domains are available: HW, RFKILL, ETHER, WIFI,
BT, MB, DHCP4, DHCP6, PPP, WIFI_SCAN, IP4, IP6, AUTOIP4, DNS, VPN,
SHARING, SUPPLICANT, AGENTS, SETTINGS, SUSPEND, CORE, DEVICE, OLPC,
WIMAX, INFINIBAND, FIREWALL, ADSL, BOND, VLAN, BRIDGE, DBUS_PROPS,
TEAM, CONCHECK, DCB.
In addition, these special domains can be used: NONE, ALL, DEFAULT,
DHCP, IP.
CONNECTIVITY SECTION
This section controls NetworkManager's optional connectivity checking
functionality. This allows NetworkManager to detect whether or not the
system can actually access the internet or whether it is behind a
captive portal.
uri
The URI of a web page to periodically request when connectivity is
being checked. This page should return the header
"X-NetworkManager-Status" with a value of "online". Alternatively,
it's body content should be set to "NetworkManager is online". The
body content check can be controlled by the response option. If
this option is blank or missing, connectivity checking is disabled.
interval
Specified in seconds; controls how often connectivity is checked
when a network connection exists. If set to 0 connectivity checking
is disabled. If missing, the default is 300 seconds.
response
If set controls what body content NetworkManager checks for when
requesting the URI for connectivity checking. If missing, defaults
to "NetworkManager is online"
PLUGINS
keyfile
plugin is the generic plugin that supports all the connection types
and capabilities that NetworkManager has. It writes files out in an
.ini-style format in /etc/NetworkManager/system-connections. For
security, it will ignore files that are readable or writeable by
any user or group other than root since private keys and
passphrases may be stored in plaintext inside the file.
ifcfg-rh
This plugin is used on the Fedora and Red Hat Enterprise Linux
distributions to read and write configuration from the standard
/etc/sysconfig/network-scripts/ifcfg-* files. It currently supports
reading wired, WiFi, and 802.1x connections, but does not yet
support reading or writing mobile broadband, PPPoE, or VPN
connections. To allow reading and writing of these add keyfile
plugin to your configuration as well.
ifupdown
This plugin is used on the Debian and Ubuntu distributions, and
reads connections from /etc/network/interfaces. Since it cannot
write connections out (that support isn't planned), it is usually
paired with the keyfile plugin to enable saving and editing of new
connections. The ifupdown plugin supports basic wired and WiFi
connections, including WPA-PSK.
ifcfg-suse
This plugin is only provided for simple backward compatibility with
SUSE and OpenSUSE configuration. Most setups should be using the
keyfile plugin instead. The ifcfg-suse plugin supports reading
wired and WiFi connections, but does not support saving any
connection types.
SEE ALSONetworkManager(8), nmcli(1), nmcli-examples(5), nm-online(1), nm-
settings(5), nm-applet(1), nm-connection-editor(1)NetworkManager 0.9.10NETWORKMANAGER.CON(5)
