NFS Server

1# Ubuntu / Debian
2sudo apt-get update
3sudo apt-get install -y nfs-kernel-server
4 
5# RHEL / CentOS / Fedora
6sudo dnf install -y nfs-utils
7sudo systemctl enable --now nfs-server

1# Create shared directory
2sudo mkdir -p /srv/nfs/share
3sudo chown nobody:nogroup /srv/nfs/share
4sudo chmod 777 /srv/nfs/share
5 
6# Configure exports
7sudo nano /etc/exports
8 
9# Add line (adjust network):
10/srv/nfs/share 192.168.1.0/24(rw,sync,no_subtree_check,no_root_squash)
11 
12# Apply exports
13sudo exportfs -ra
14sudo exportfs -v
15sudo systemctl restart nfs-kernel-server

1# Install client
2sudo apt-get install -y nfs-common
3 
4# Create mount point
5sudo mkdir -p /mnt/nfs-share
6 
7# Mount
8sudo mount -t nfs 192.168.1.10:/srv/nfs/share /mnt/nfs-share
9 
10# Persistent mount in /etc/fstab:
11# 192.168.1.10:/srv/nfs/share /mnt/nfs-share nfs defaults 0 0
12 
13df -h | grep nfs

1# /etc/exports for NFSv4:
2/srv/nfs *(rw,fsid=0,sync,no_subtree_check)
3 
4# Client mount:
5sudo mount -t nfs4 192.168.1.10:/ /mnt/nfs-share

1# On server
2showmount -e localhost
3 
4# On client
5echo "test" | sudo tee /mnt/nfs-share/test.txt
6cat /mnt/nfs-share/test.txt
7sudo nfsstat

1sudo exportfs -v
2sudo exportfs -ua          # unexport all
3sudo exportfs -ra          # re-export
4 
5# Firewall (NFS uses 2049)
6sudo ufw allow from 192.168.1.0/24 to any port nfs
7sudo rpcinfo -p | grep nfs

1# Install nfs-utils on all K8 nodes
2# Create PV manually:
3kubectl apply -f - <<EOF
4apiVersion: v1
5kind: PersistentVolume
6metadata:
7  name: nfs-pv
8spec:
9  capacity:
10    storage: 10Gi
11  accessModes: [ReadWriteMany]
12  nfs:
13    server: 192.168.1.10
14    path: /srv/nfs/share
15EOF

1# On server — check exports
2sudo exportfs -v
3showmount -e localhost
4# On client:
5sudo mount -t nfs -v server-ip:/path /mnt/nfs