PRVF-4661 : Found inconsistent hosts entry in /etc/nsswitch.conf

RAC GRID - Post installation screen fail with PRVF-4661 : Found inconsistent hosts entry in /etc/nsswitch.conf
Error:
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Oracle rac 11gr2 fails with Configure oracle grid infrastructure for a cluster.
Oracle rac 11gr2 oracle cluster verification utility failed

INFO: Post-check for cluster services setup was unsuccessful.
INFO: Checks did not pass for the following node(s):
INFO:   Node-01,Node-02
INFO:
WARNING:
INFO: Completed Plugin named: Oracle Cluster Verification Utility

Checks did not pass for the following node Post-check for cluster services setup was unsuccessful

ERROR:
PRVF-4661 : Found inconsistent hosts entry in /etc/nsswitch.conf on node Node-01
Solution:
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Change the setting of hosts in the file /etc/nsswitch.conf,It should be simitar to both the nodes as well.
Like below.
 hosts:    files   dns   nis

Then run the post cluster verify as below.

 ./cluvfy stage -post crsinst -n all -verbose