How Can I make a NFS Cluster + ctdb work?

[Pablo Silva]

Dear People!

     I've just to read the ctdb + NFS tutorial without success,

https://ctdb.samba.org/nfs.html

http://wiki.samba.org/index.php/CTDB_Setup#Setting_up_CTDB_for_clustered_NFS

   But, i'm lost...,I could successfully set ctdb + gluster, but not much documentation 
accompanying how NFS. Thanks in advnace for any hint. -Pablo