KfWiki: Setting up NFS server

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Setting up NFS server

Edit the export file in /etc/exports

exports

/data 192.168.0.2(rw,no_root_squash,async)

Enable and start NFS service

chkconfig --level 35 portmap on
chkconfig --level 35 nfs on
service portmap start
service nfs start

If portmap is not started, you will get an error similiar to the following:

Cannot register service: RPC: Unable to receive; errno = Connection refused
rpc.rquotad: unable to register

Mounting the NFS share on remote machine

Create the mount point directory, then mount the NFS share

mkdir /nfs.data
mount 192.168.0.1:/data /nfs.data

Make the mount permanent, edit /etc/fstab

192.168.0.1:/data             /nfs.data                   nfs     _netdev,soft,intr,rw,bg,rsize=32768,wsize=32768,nfsvers=3 0 0
# _netdev makes sure this mount is brought up after networking

Ubuntu as NFS client

Aside from the usual stuff, it seems that the following option is required otherwise NFS mount will be very slow and one will get repeated messages "lockd: cannot monitor x.x.x.x" in kernel buffer:

/etc/default/nfs-common

NEED_STATD=yes

NFSv4

No idea why they make this so complicated and different form v3.

Using CentOS as server

/etc/sysconfig/nfs

SECURE_NFS="no"

/etc/exports

/exports    192.168.18.0/24(rw,fsid=0,insecure,no_subtree_check,async)

/exports/home   192.168.18.0/24(rw,nohide,insecure,no_subtree_check,async)

/etc/idmapd.conf

[General]

Verbosity = 0

Pipefs-Directory = /var/lib/nfs/rpc_pipefs

Domain = localdomain

[Mapping]

Nobody-User = nobody

Nobody-Group = nobody

[Translation]

Method = nsswitch

Assuming you want to export /home, do this. This is because nfs4 works on psesdo filesystem?

mkdir /exports
mount --bind /home /exports/home
/etc/init.d/nfs start
/etc/init.d/nfslock start
/etc/init.d/rpcidmapd start

using ubuntu as NFS client

Notice that I'm mount /home on the remote server, not /exports/home!

/etc/fstab

192.168.18.12:/home /home       nfs vers=4,hard,bg,tcp,intr,rsize=8192,wsize=8192   0 0