Bellevue University

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Bellevue University

• Network File System

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Network File System

• Allows files on remote computers to be accessed
  as though they reside on a local computer
• Operate on the client server model

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Adding a file system

• Use vi to edit the /etc/exports file
• Add a line for each file system to be shared
• Format
• ltdirectorygt ltauthorized usergt
• Example
• /home/export 10.0.3.43

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NFS on the server

• The server must be running the following daemons
  (RPC, portmap, biod, mountd, nfsd)
• The server must make files visible to remote
  systems (using /etc/exports file)

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NFS on the client

• The client must be running the RPC, portmap, and
  biod daemons
• The client mounts the remote file system using
  the mount command

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Caution

• NFS bypasses the logon process.
• You can make any part of your file system
  available to the network
• That can be a security problem if the wrong
  people gain access

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Lab Exercise For NFS
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Do The Following

• Log on as root or su
• Make a directory in /mnt called vitutor

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Do The Following (cont)

• Mount an NFS share on ________ (your instructor
  will give you the IP address) called /home/shared
  to the /mnt/vitutor directory.
• Copy the file you find in the /mnt/shared NFS
  share to your primary users home directory

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Do The Following (cont)

• Change the ownership of the file so your normal
  user owns it. (chown ltusernamegt ltfilegt)
• Look at the file contents with vi (vi ltfilenamegt)