DNS

DNS is normally configured during initial setup. If you need to later change your DNS settings, you can use NetworkManager’s console utilities, nmtui and nmcli.

nmtui

nmtui is NetworkManager’s text-based user interface:

https://docs.oracle.com/en/operating-systems/oracle-linux/9/network/network-ConfiguringtheSystemsNetwork.html#ol-netconf-config-tui

nmcli

nmcli is NetworkManager’s command-line interface:

https://docs.oracle.com/en/operating-systems/oracle-linux/9/network/network-ConfiguringtheSystemsNetwork.html#ol-netconf-config-cli