Exercises with NFSv4

  • NFSv4 exports exist in a single pseudo filesystem, where the real directories are mounted with the --bind option.



    Create the export filesytem on the NFS server (the node machine): 
    mkdir /export
mkdir /export/users

    Create and mount the real user home directory onto /export/users with --bind option: 
    mkdir /home/NFSv4
mount --bind /home/NFSv4 /export/users
    To survive a reboot, the mount can be added into /etc/fstab 
    /home/NFSv4    /export/users   none    bind  0  0

    In /etc/default/nfs-kernel-server on the NFS server, we set: 
    NEED_SVCGSSD=no

    In /etc/default/nfs-common on both the NFS server and the client 
    NEED_IDMAPD=yes
NEED_GSSD=no

    Stop statd on both the NFS server and the client: 
    service statd stop

    Export the directories from the NFS server to the client by placing the following content in /etc/exports on the NFS server: 
    /export desktop01(rw,fsid=0,insecure,no_subtree_check,async)
/export/users desktop01(rw,nohide,insecure,no_subtree_check,async)
    Note, you can keep the old NFSv3 related entries in /home/exports on the server, such as "/home/exports desktop01(rw)"

    Restart the NFS on the server: 
    service nfs-kernel-server restart


    On the client, create a mounting point and mount the directory from the NFSv4 server: 
    mkdir /home/NFSv4
mount -t nfs4  node01:/ /home/NFSv4
    See the mounted directories 
    df -h

    Check the mounted file system types 
    mount

    On the NFS server (node), add two directories, /usr/share/doc and /var/log, to the shared file system name space: 
    mkdir /export/DOC
mount --bind /usr/share/doc /export/DOC
mkdir /export/LOG
mount --bind /var/log /export/LOG
    Modify /etc/exports by adding the export entries for these directories on the NFS server: 
    /export/DOC desktop01(ro,nohide,insecure,no_subtree_check,async)
/export/LOG desktop01(ro,nohide,insecure,no_subtree_check,async)
    Re-export the filesystems by running command exportfs on the NFS server as follows: 
    exportfs -ra

    On the client (desktop), re-mount the NFS file system: 
    mount  -o remount  /home/NFSv4
    See the content of /home/NFSv4 
    ls /home/NFSv4
ls /home/NFSv4/LOG
ls /home/NFSv4/DOC

    References:
    NFSv4Howto on Ubuntu
    Configuring a NFSv4 Server and Client on SUSE Linux Enterprise Server 10