DA-660-8/16-LX User’s Manual
Managing Communications
4-16
no_root_squash
If
no_root_squash
is selected, then the root on the client machine will have the same level of
access to files on the system as the root on the server. This can have serious security
implications, although it may be necessary if you want to do administrative work on the client
machine that involves the exported directories. You should only specify this option when you
have a good reason.
root_squash
Any file request made by the user root on the client machine is treated as if it is made by user
nobody on the server. (Exactly which UID the request is mapped to depends on the UID of user
nobody
on the server, not the client.)
sync
Sync data to memory and flash disk.
async
The async option instructs the server to lie to the client, telling the client that all data has been
written to the stable storage.
Example 1
/tmp *(rw,no_root_squash)
In this example, the DA-660 shares the
/tmp
directory with everyone, and gives everyone both
read and write authority. The root user on the client machine will have the same level of access to
files on the system as the root on the server.
Example 2
/home/public 192.168.0.0/24(rw) *(ro)
In this example, the DA-660 shares the directory
/home/public
to a local network 192.168.0.0/24,
with read and write authority. Other NFS clients can just read
/home/public
; they do not have
write authority.
Example 3
/home/test 192.168.3.100(rw)
In this example, the DA-660 shares the directory
/home/test
to an NFS Client 192.168.3.100, with
both read and write authority.
NOTE
After editing the NFS Server configuration file, remember to use the following command to restart
and activate the NFS server.
/etc/init.d/nfs-user-server restart
Setting up the DA-660 as a NFS Client
Use the following procedure is used to mount a remote NFS Server.
1.
Scan the NFS Server’s shared directory.
2.
Establish a mount point on the NFS Client site.
3.
Mount the remote directory to a local directory.
Step 1:
#showmount –e HOST
showmount:
Show the mount information for an NFS Server.
-e:
Show the NFS Server’s export list.
HOST:
IP address or DNS address.
Steps 2 & 3:
#mkdir –p /home/nfs/public
