NFS (Network File System)
NFS SERVER SIDE
sudo apt install nfs-kernel-server
make sure to start rpcbind, tho it is always enabled
systemctl enable --now rpcbind
RPCBIND
Remote Procedure Call
Connects ports between client and server
NFSv2 and NFSv3 require rpcbind
NFSv4 does not need it
Reduces the number of required ports
Hurts compatibility
touk@ubuntu:/srv/nfs$ sudo mkdir files
touk@ubuntu:/srv/nfs$ sudo chmod o+rw files
touk@ubuntu:/srv/nfs$ ls -l
total 4
drwxr-xrwx 2 root root 4096 Aug 31 06:32 files
Now, i need to tell NFS to share this folder and i’ll do that in /etc/exports
sudo vim /etc/exports
touk@ubuntu:/srv/nfs$ sudo vim /etc/exports
touk@ubuntu:/srv/nfs$ sudo exportfs -r
touk@ubuntu:/srv/nfs$ cat /etc/exports
# /etc/exports: the access control list for filesystems which may be exported
# to NFS clients. See exports(5).
#
# Example for NFSv2 and NFSv3:
# /srv/homes hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subtree_check)
#
# Example for NFSv4:
# /srv/nfs4 gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check)
# /srv/nfs4/homes gss/krb5i(rw,sync,no_subtree_check)
#
/srv/nfs/files *(sync,no_subtree_check) # File added for sharing to other linux machines
Reload the config file sudo exportfs -r
sudo exportfs -v #to verify
touk@ubuntu:/srv/nfs$ sudo exportfs -v
/srv/nfs/files <world>(ro,wdelay,root_squash,no_subtree_check,sec=sys,ro,secure,root_squash,no_all_squash)
Update portmap sudo systemctl restart nfs-kernel-server
NFS CLIENT SIDE
sudo apt install nfs-common
or in credhat distros: sudo yum install nfs-utils
df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 4.0M 0 4.0M 0% /dev
tmpfs 1.8G 0 1.8G 0% /dev/shm
tmpfs 727M 9.7M 718M 2% /run
/dev/mapper/cs-root 28G 9.5G 17G 37% /
/dev/sda2 974M 463M 444M 52% /boot
tmpfs 364M 52K 364M 1% /run/user/42
tmpfs 364M 36K 364M 1% /run/user/1000
sudo mount -t nfs 192.168.1.12:/srv/nfs/files /mnt/nfs_share
df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 4.0M 0 4.0M 0% /dev
tmpfs 1.8G 0 1.8G 0% /dev/shm
tmpfs 727M 9.7M 718M 2% /run
/dev/mapper/cs-root 28G 9.5G 17G 37% /
/dev/sda2 974M 463M 444M 52% /boot
tmpfs 364M 52K 364M 1% /run/user/42
tmpfs 364M 36K 364M 1% /run/user/1000
192.168.1.12:/srv/nfs/files 39G 34G 2.7G 93% /mnt/nfs_share
To see the NFS Activity use this command:
nfsstat
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