NFS Server – Folder Sharing

The Network File System, or NFS, is an application-level protocol, according to the OSI Model. It is used for distributed file systems in a d environment. ===

¿QUE ES NFS?

He Network File System (Network File System), o NFS, it's a protocol application level, depending on the OSI model. It is used for distributed file systems in a local area computer network environment. Enables different systems connected to the same network to access remote files as if they were local files

We install the necessary packages.

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aptitude install nfs-kernel-server portmap nfs-common nfswatch

We verify that portmap is running.

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ps aux | grep portmap

daemon 1166 0.0 0.0 1808 448 ? Ss Dec26 0:00 /sbin/portmap

To know if NFS is running, we will query the portmap to tell us what services it has running.

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rpcinfo -p

programa vers proto puerto

100000 2 tcp 111 portmapper

100000 2 udp 111 portmapper

100024 1 udp 53104 status

100024 1 tcp 40155 status

100021 1 udp 42941 nlockmgr

100021 3 udp 42941 nlockmgr

100021 4 udp 42941 nlockmgr

100021 1 tcp 48742 nlockmgr

100021 3 tcp 48742 nlockmgr

100021 4 tcp 48742 nlockmgr

100003 2 tcp 2049 nfs

100003 3 tcp 2049 nfs

100003 4 tcp 2049 nfs

100003 2 udp 2049 nfs

100003 3 udp 2049 nfs

100003 4 udp 2049 nfs

100005 1 udp 49454 mountd

100005 1 tcp 45660 mountd

100005 2 udp 49454 mountd

100005 2 tcp 45660 mountd

100005 3 udp 49454 mountd

100005 3 tcp 45660 mountd

Once the verification is done we are going to mount the disk, FS or folder that we want. The configuration is done in the file: /etc/exports

Bash

vi /etc/exports

Syntax:

We insert the route, IP, subnet mask and permissions

Example:

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/media/DATOS 192.168.1.0/255.255.255.0(rw)

Basic configuration /etc/hosts.allow and /etc/hosts.deny

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/etc/hosts.deny

portmap:ALL

lockd:ALL

mountd:ALL

rquotad:ALL

statd:ALL
/etc/hosts.allow

portmap:192.168.0.0/255.255.255.0

lockd:192.168.0.0/255.255.255.0

mountd:192.168.0.0/255.255.255.0

rquotad:192.168.0.0/255.255.255.0

statd:192.168.0.0/255.255.255.0

We start the daemon

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/etc/init.d/nfs-kernel-server restart

We check that you have shared it correctly.

Bash

exportfs
/media/DATOS 192.168.1.0/255.255.255.0

Client settings

We install the necessary packages.

Bash

apt-get install rpcbind nfs-common

We must allow the server's rpcbind.

vi /etc/hosts.allow

and we add:

rpcbind: 192.168.1.101/255.255.255.255

Command syntax:

We insert ip or name, shared directory and mount point

Bash

mount -nfs <IP O NOMBREEA>:/<DIRECTORIO> <PUNTO DE MONTAJE>

Example:

Bash

mount  -nfs 192.168.1.101:/media/DATOS  /DATOS -o nolock

If we want the NFS file system to be mounted at boot, we must add an entry in the file /etc/fstab. In our example we would add

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192.168.1.101:/DATOS /DATOS nfs rw,hard,intr 0 0

Greetings, rokitoh!

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