Oracle RAC installation/upgrade Error : runcluvfy.sh failed with Liveness check failed for "ntpd", PRVF-5494 : The NTP Daemon or Service was not alive on all nodes, PRVF-5415 : Check to see if NTP daemon or service is running failed on Linux

During RAC installation/upgrade you may see below error:

INFO: Liveness check failed for "ntpd"
INFO: Check failed on nodes:
INFO:   ******,*******
INFO: PRVF-5494 : The NTP Daemon or Service was not alive on all nodes
INFO: PRVF-5415 : Check to see if NTP daemon or service is running failed
INFO: Clock synchronization check using Network Time Protocol(NTP) failed
INFO: PRVF-9652 : Cluster Time Synchronization Services check failed


Solution:

Executed below steps as the root user on all the nodes of RAC

mv /etc/sysconfig/ntpd /etc/sysconfig/ntpd_bkp
mv /etc/ntp.conf /etc/ntp.conf_bkp

now re-run runcluvfy.sh or retry the step where the installation got failed.