Cluvfy RAC 11gR2: Liveness check failed for "ntpd" PRVF-5415

Follow this instruction to configure your NTP:

vi /etc/ntp.conf

Put comments to all servers and ristricts

In node1, type : server node2

In node2, type: server node1

save and quit

on each node
# /etc/init.d/ntpd restart

Also, you can sync nodes manually
# ntpdate node1(2)