Linux Network Administration

Distro support

Two-family skill. Diagnostics (ip, ss, ping, dig, resolvectl, traceroute) are identical on both families. The difference is persistent configuration: Debian/Ubuntu use Netplan; the RHEL family (Fedora, RHEL, CentOS Stream, Rocky, Alma, Oracle) uses NetworkManager / nmcli — Netplan does not exist on RHEL. Full detail: references/networkmanager-reference.md.