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.