mirror of
https://pagure.io/fedora-docs/quick-docs.git
synced 2024-12-01 07:39:48 +00:00
214 lines
5.1 KiB
Text
214 lines
5.1 KiB
Text
[id='Configuring-networking-with-nmcli']
|
|
= Configuring networking with nmcli - quick reference
|
|
|
|
[[networkmanager-status]]
|
|
== NetworkManager status
|
|
|
|
Display overall status of NetworkManager:
|
|
----
|
|
$ nmcli general status
|
|
----
|
|
|
|
Display active connections:
|
|
----
|
|
$ nmcli connection show --active
|
|
----
|
|
|
|
Display all configured connections:
|
|
----
|
|
$ nmcli connection show configured
|
|
----
|
|
|
|
[[connectdisconnect-to-an-already-configured-connection]]
|
|
== Connect/disconnect to an already configured connection
|
|
|
|
Connect to a configured connection by name:
|
|
----
|
|
$ nmcli connection up id <connection_name>
|
|
----
|
|
|
|
Disconnection by name:
|
|
----
|
|
$ nmcli connection down id <connection_name>
|
|
----
|
|
|
|
[[wi-fi]]
|
|
== Wi-Fi
|
|
|
|
Get Wi-Fi status:
|
|
----
|
|
$ nmcli radio wifi
|
|
----
|
|
|
|
Turn Wi-Fi on or off:
|
|
----
|
|
$ nmcli radio wifi _on|off_
|
|
----
|
|
|
|
List available access points (AP) to connect to:
|
|
----
|
|
$ nmcli device wifi list
|
|
----
|
|
|
|
Refresh the previous list:
|
|
----
|
|
$ nmcli device wifi rescan
|
|
----
|
|
|
|
Create a new connection to an open AP:
|
|
----
|
|
$ nmcli device wifi connect <SSID|BSSID>
|
|
----
|
|
|
|
Create a new connection to a password protected AP:
|
|
----
|
|
$ nmcli device wifi connect <SSID|BSSID> password <password>
|
|
----
|
|
|
|
|
|
== Network interfaces
|
|
|
|
List available devices and their status:
|
|
----
|
|
$ nmcli device status
|
|
----
|
|
|
|
Disconnect an interface:
|
|
----
|
|
$ nmcli device disconnect iface <interface>
|
|
----
|
|
|
|
[[create-or-modify-a-connection]]
|
|
== Create or modify a connection
|
|
|
|
To create a new connection using an interactive editor
|
|
----
|
|
$ nmcli connection edit con-name <name_of_new_connection>
|
|
----
|
|
|
|
To edit an already existing connection using an interactive editor:
|
|
----
|
|
$ nmcli connection edit <connection_name>
|
|
----
|
|
|
|
[[exampletutorial]]
|
|
=== Example/Tutorial
|
|
|
|
Create a new connection:
|
|
----
|
|
$ nmcli connection edit con-name _name of new connection_
|
|
----
|
|
|
|
It asks us to define a connection type:
|
|
----
|
|
Valid connection types: 802-3-ethernet (ethernet), 802-11-wireless (wifi), wimax, gsm, cdma, infiniband, adsl, bluetooth, vpn, 802-11-olpc-mesh (olpc-mesh), vlan, bond, team, bridge, bond-slave, team-slave, bridge-slave
|
|
Enter connection type:
|
|
----
|
|
|
|
In this example, we use ethernet:
|
|
----
|
|
Enter connection type: ethernet
|
|
----
|
|
|
|
The following message appears, note that `nmcli>` is a prompt and that it lists the main settings available:
|
|
----
|
|
===| nmcli interactive connection editor |===
|
|
|
|
Adding a new '802-3-ethernet' connection
|
|
|
|
Type 'help' or '?' for available commands.
|
|
Type 'describe [<setting>.<prop>]' for detailed property description.
|
|
|
|
You may edit the following settings: connection, 802-3-ethernet (ethernet), 802-1x, ipv4, ipv6
|
|
nmcli>
|
|
----
|
|
|
|
Edit the setting `ipv4`:
|
|
----
|
|
nmcli> goto ipv4
|
|
----
|
|
|
|
Note that after this our prompt has changed to indicate that we are currently editing the `ipv4` setting:
|
|
----
|
|
nmcli ipv4>
|
|
----
|
|
|
|
List available properties under the `ipv4` setting and describe the `method` property:
|
|
----
|
|
nmcli ipv4> describe
|
|
|
|
Available properties: method, dns, dns-search, addresses, routes, ignore-auto-routes, ignore-auto-dns, dhcp-client-id, dhcp-send-hostname, dhcp-hostname, never-default, may-fail
|
|
Property name?
|
|
|
|
Property name? method
|
|
----
|
|
|
|
Set property `method` to `auto`:
|
|
----
|
|
nmcli ipv4> set method auto
|
|
----
|
|
|
|
The `ipv4` setting is now finished. Go back to the main level. Enter the following command until the prompt looks like `nmcli>`:
|
|
----
|
|
nmcli ipv4> back
|
|
----
|
|
|
|
To list the main settings again, use the `goto` command without any arguments. After that, press `Enter` and ignore the error.
|
|
----
|
|
nmcli> goto
|
|
|
|
Available settings: connection, 802-3-ethernet (ethernet), 802-1x, ipv4, ipv6
|
|
Setting name?
|
|
----
|
|
|
|
It is possible to set a value for a property directly from the main level:
|
|
----
|
|
nmcli> set __setting__.__property__ _value_
|
|
----
|
|
|
|
For example:
|
|
----
|
|
nmcli> set connection.autoconnect TRUE
|
|
|
|
nmcli> set connection.interface-name _interface name this connection is bound to_
|
|
|
|
nmcli> set ethernet.cloned-mac-address _Spoofed MAC address_
|
|
----
|
|
|
|
Finally, check the connection details, save and exit:
|
|
----
|
|
nmcli> print
|
|
|
|
nmcli> save
|
|
|
|
nmcli> quit
|
|
----
|
|
|
|
[[manually-editing]]
|
|
=== Manually editing
|
|
|
|
To manually edit an `ifcfg` connection configuration, open or create with a text editor the configuration file of the connection located in `/etc/sysconfig/network-scripts/ifcfg-`.
|
|
|
|
A description of most common configuration options is available in the link:https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/deployment_guide/s1-networkscripts-interfaces[RHEL6 Deployment Guide].
|
|
|
|
To modify a connection password, open with a text editor and edit the file `keys-` located in `/etc/sysconfig/network-scripts/`. The password is stored in plain text. For example:
|
|
----
|
|
$ cat /etc/sysconfig/network-scripts/keys-__connection name__
|
|
WPA_PSK='password'
|
|
----
|
|
|
|
Or, if using keyfile, simply edit the connection file located inside `/etc/NetworkManager/system-connections/`
|
|
|
|
Finally, save the files and to apply changes to an already active connection execute.
|
|
----
|
|
nmcli connection up id _connection name_
|
|
----
|
|
|
|
[[delete-a-connection-configuration]]
|
|
== Delete a connection configuration
|
|
|
|
Delete the connection:
|
|
----
|
|
nmcli connection delete id <connection_name>
|
|
----
|
|
Please note that this also deactivates the connection.
|