sudo systemctl status nfs-kernel-server

sudo mkdir -p /exports/nfs/docs  /exports/nfs/backup

sudo mv /etc/exports /etc/exports.old

sudo nano /etc/exports
/exports/nfs/docs 172.16.32.0/24(rw,sync,no_subtree_check)
/exports/nfs/backup  172.16.32.0/24(ro,no_subtree_check)


Client 
Sudo apt install nfs-common

showmount –exports 172.16.32.1

sudo mkdir -p /mnt/nfs/docs /mnt/nfs/backup

df -h
ls -l /mnt/nfs/docs 

sudo mount 172.16.32.1:/exports/nfs/docs  /mny/nfs/docs
sudo mount 172.16.32.1:/exports/nfs/backup  /mnt/nfs/backup