how to mount a directory from another server? [closed]

On the 'server' add an entry into your /etc/exports to share the directory e.g.

/directory/with/data secondserver.tld(rw)

which allows secondserver read/write access to the directory/with/data

then use exportfs to share the directory

exportfs -r

and you can verify your export with

exportfs
/directory/with/data    secondserver.tld

You can now mount your directory on secondserver

mount server:/directory/with/data /mnt

and you can verify the mount

mount -t nfs
server:/directory/with/data on /mnt type nfs (rw,addr=192.168.254.196)

You may want to add an entry to your fstab to have it mount on boot too

server:/directory/with/data /mnt    nfs rw 0 0 

You'll probably want to read the various man pages I linked to too.