Identity

Unit: nfs-server.service (RHEL/Fedora) or nfs-kernel-server.service (Debian/Ubuntu)
Config: /etc/exports, /etc/exports.d/*.exports
Client daemon: rpc.statd (NFSv3 lock), rpc-statd.service; NFSv4 needs no separate daemon
Install: server: dnf install nfs-utils / apt install nfs-kernel-server; client: dnf install nfs-utils / apt install nfs-common
Ports: 2049 TCP/UDP (NFS), 111 TCP/UDP (portmapper, NFSv3 only), 20048 TCP/UDP (mountd, NFSv3 only)

Key Operations

Operation	Command
Server status	`systemctl status nfs-server`
List configured exports	`cat /etc/exports`
Reload exports after edit	`sudo exportfs -ra`
Show active exports with options	`exportfs -v`
Show who has mounts (server)	`showmount -a`
Show exports on a server (client)	`showmount -e <server>`
Mount NFSv4 share (one-time)	`sudo mount -t nfs4 server:/export/path /mnt/local`
Mount with explicit options	`sudo mount -t nfs4 -o rsize=65536,wsize=65536,timeo=14,hard server:/path /mnt/local`