Configure the system hostname and configure a static IP address on the existing NetworkManager connection.

Solution:

Set the hostname:

hostnamectl set-hostname server1.example.com

Configure the existing connection with a static IP:

nmcli connection modify ens160 ipv4.address 192.168.1.2/24 ipv4.gateway 192.168.1.1 ipv4.dns 1.1.1.1 ipv4.method manual connection.autoconnect yes

Bring the connection up:

nmcli connection up ens160

Detailed Explanation:

hostnamectl is the correct modern command for changing the system hostname.

nmcli is the correct tool for RHEL 10 network configuration because the old ifcfg style is removed in RHEL 10, and NetworkManager keyfiles are the supported model.

ipv4.method manual tells NetworkManager to use static addressing.

connection.autoconnect yes ensures the profile activates automatically after reboot.

nmcli connection up ens160 applies the changes immediately.