Lab46 Wiki

This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong.
Building an NFS files system.
Notice: any thing printed in **BOLD** is ment to be typed.

Step1: identify  your systems

I will be using a three system set up one server and two clients

<code>
NFS Server: Mellow.student.lab IP address: 10.80.2.232
NFS Client: Purple.student.lab  IP address: 10.80.2.231
NFS Client: Frosty.student.lab  IP address: 10.80.2.230
</code>
 
Step2: Installing NFS

To install NFS on the server  run:

**apt-get install nfs-kernel-server nfs-common portmap
**

Then on the clients we installed NFS as follows:

**apt-get install nfs-common portmap**

 
Step 3: Exporting NFS files system.

server:

**mkdir /var/nfs
chown nobody:nogroup /var/nfs
**

Then edit  /etc/exports 


**vi /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)\\
# \\

**/home    10.80.3.230(rw,sync,no_root_squash,no_subtree_check) 10.80.3.231(rw,sync,no_root_squash,no_subtree_check)** #setups nfs access for the two clients \\
/vicepa 10.80.3.14(rw,sync,no_root_squash,no_subtree_check) # setup to give access to a virual server 14  for the virual disk.


Whenever we modify /etc/exports, we must run

**exportfs -a**

afterwords to make the changes effective.

 
Step4: Mounting The NFS Shares On The Clients

First we create the directories where we want to mount the NFS shares:

**mkdir -p /xen
**
Then we can mount them as follows:

**mount 10.80.3.232:/home /xen**


You should now see the  NFS shares in the outputs of

client:~# df -h

Filesystem            Size  Used Avail Use% Mounted on
/dev/hda1              12G  772M   11G   7% /
tmpfs                 129M     0  129M   0% /lib/init/rw
udev                   10M  1.6M  8.5M  16% /dev
tmpfs                 129M     0  129M   0% /dev/shm
10.80.3.232:/home      37G  7.9G   27G  23% /xen        

:~# mount

/dev/hda1 on / type ext3 (rw,errors=remount-ro) \\
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755) \\
proc on /proc type proc (rw,noexec,nosuid,nodev) \\
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) \\
procbususb on /proc/bus/usb type usbfs (rw) \\
udev on /dev type tmpfs (rw,mode=0755) \\
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) \\
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620) \\
10.80.3.232:/home on /xen type nfs (rw,addr=10.80.3.232) \\

 
Step 5: Mounting NFS Shares At Boot Time

Instead of mounting the NFS shares manually on the client, you could modify /etc/fstab so that the NFS shares get mounted automatically when the client boots.

Open /etc/fstab and append the following lines:

:~# vi /etc/fstab


# /etc/fstab: static file system information. \\
# \\
# \\
 <file system> <mount point>   <type>  <options>       <dump>  <pass>    \\
proc            /proc           proc    defaults        0       0        \\
/dev/hda1       /               ext3    errors=remount-ro 0       1      \\ 
/dev/hda5       none            swap    sw              0       0        \\
/dev/hdc        /media/cdrom0   udf,iso9660 user,noauto     0       0    \\
/dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0        \\
**10.80.3.232:/home  /xen         nfs      rw,sync,hard,intr  0     0**  \\


To test if your modified /etc/fstab is working, reboot the client:

:~# **reboot**

After the reboot, you should find the  NFS shares in the outputs of

:~# **df -h**

Filesystem            Size  Used Avail Use% Mounted on \\
/dev/hda1              12G  772M   11G   7% /  \\ 
tmpfs                 129M     0  129M   0% /lib/init/rw  \\
udev                   10M  1.6M  8.5M  16% /dev \\
tmpfs                 129M     0  129M   0% /dev/shm  \\
10.80.3.232:/home      37G  7.9G   27G  23% /xen       \\ 

:~# **mount**

     
<file system> <mount point>   <type>  <options>       <dump>  <pass> \\
proc            /proc           proc    defaults        0       0  \\ 
/dev/hda1       /               ext3    errors=remount-ro 0       1  \\
/dev/hda5       none            swap    sw              0       0 \\ 
/dev/hdc        /media/cdrom0   udf,iso9660 user,noauto     0       0  \\
/dev/fd0        /media/floppy0  auto    rw,user,noauto  0       0  \\
10.80.3.232:/home  /xen         nfs      rw,sync,hard,intr  0     0 \\
Lab46 Wiki

User Tools

Site Tools

Page Tools
