2022-05-27 15:57:17 +00:00
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NetworkManager stores new network profiles in keyfile format in the
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/etc/NetworkManager/system-connections/ directory.
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Previously, NetworkManager stored network profiles in ifcfg format
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in this directory (/etc/sysconfig/network-scripts/). However, the ifcfg
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format is deprecated. By default, NetworkManager no longer creates
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new profiles in this format.
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Connection profiles in keyfile format have many benefits. For example,
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this format is INI file-based and can easily be parsed and generated.
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Each section in NetworkManager keyfiles corresponds to a NetworkManager
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setting name as described in the nm-settings(5) and nm-settings-keyfile(5)
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man pages. Each key-value-pair in a section is one of the properties
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listed in the settings specification of the man page.
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If you still use network profiles in ifcfg format, consider migrating
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them to keyfile format. To migrate all profiles at once, enter:
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# nmcli connection migrate
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This command migrates all profiles from ifcfg format to keyfile
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format and stores them in /etc/NetworkManager/system-connections/.
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Alternatively, to migrate only a specific profile, enter:
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# nmcli connection migrate <profile_name|UUID|D-Bus_path>
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For further details, see:
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* nm-settings-keyfile(5)
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* nmcli(1)
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2023-10-30 13:44:25 +00:00
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Interface renaming
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==================
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Connection profiles stored in ifcfg-rh format support the renaming of
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interfaces via udev. This is done via a helper tool
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/usr/lib/udev/rename_device that is invoked by udev to parse the files
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in /etc/sysconfig/network-scripts; when the HWADDR and DEVICE
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variables are set, the interface that matches the MAC address in
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HWADDR is renamed to the name specified in DEVICE.
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Connections in keyfile format don't provide the same integration with
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udev. The renaming of interfaces must be configured directly in udev,
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for example by creating a file:
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/etc/systemd/network/70-rename.link
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with content:
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[Match]
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MACAddress=00:11:22:33:44:56
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[Link]
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Name=ethernet1
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Alternatively, a udev rule can also be used, such as:
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/etc/udev/rules.d/70-interface-names.rules
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with content:
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SUBSYSTEM=="net",ACTION=="add",ATTR{address}=="00:11:22:33:44:56",ATTR{type}=="1",NAME="ethernet1"
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