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Network info from google

n Red Hat Enterprise Linux (RHEL) 10, manage basic networking primarily
using nmcli (command-line) or nmtui (text interface) to control NetworkManager. Key changes include the removal of ifcfg file support, favoring key files in /etc/NetworkManager/system-connections/. The dhclient tool is also replaced by an internal DHCP client.
Key Networking Commands and Tasks (RHEL 10)
  • View Network Status:
    • ip a: View IP addresses and interface status.
    • nmcli device status: Check device states.
    • nmcli connection show: List active network profiles.
  • Configure Networking (DHCP):
    • nmtui: Open the text-based user interface to edit connections.
    • nmcli con add type ethernet con-name <name> ifname <interface>: Create a new DHCP connection.
  • Configure Static IP:
    • nmcli con mod <connection> ipv4.addresses <ip/mask> ipv4.gateway <gateway> ipv4.method manual: Sets static IP.
    • nmcli con mod <connection> ipv4.dns "8.8.8.8": Sets DNS servers.
    • nmcli con up <connection>: Apply changes.
  • Troubleshooting:
    • ping <host>: Test connectivity.
    • ip route: View routing table.
    • nmcli dev connect <interface>: Reconnect an interface.
  • Hostname:
    • hostnamectl set-hostname <new_name>: Change the system hostname.
RHEL 10 fully deprecates the older /etc/sysconfig/network-scripts/ format. Always use nmcli or nmtui to ensure configurations are properly saved in the new key file format.


 

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