NFS Server Side

A server exports a file system to the specified hosts and allows them to mount it.

To specify what file system to export and to what hosts through

/etc/exports file:

file-system host1(options)  host2(options)

For example:

/home    unisys01(rw)  unisys05(ro)
/exports unisys*(rw)

To export directories manualy, run command:

/usr/sbin/exportfs -o rw unisys01:/home

To un-export, run:

/usr/sbin/exportfs -u unisys01:/home

Export common options:

ro
rw
root_squash
no_root_squash
all_squash
no_all_squash
anonuid=xxxx
anongid=xxxx
sync  (NFSv3)
async (NFSv3)
noaccess (used with nested exports)

For example, noaccess in /etc/exports can be used as follows:

/users         node*(rw)
/users/alexei  (noaccess)

Default options: ro, async, root_squash

To run the Server NFS services, the following deb packages need to be installed:
portmap, nfs-common, nfs-kernel-server

To start the NFS services, run the startup scripts:

/etc/init.d/portmap start
/etc/init.d/nfs-common start
/etc/init.d/nfs-kernel-server start

To make sure that the RPC services are running:

/usr/bin/rpcinfo -p

Every time when you modify /etc/exports file, run

/usr/sbin/exportfs -ra

To verify exports, run one of the two commands below

/usr/sbin/exportfs -v
/sbin/showmount -e

To start NFS services at boot-up time, run

update-rc.d portmap defaults
update-rc.d nfs-common defaults
update-rc.d nfs-kernel-server defaults