Enable NTP on Cluster and Browser Host

To enable NTP on the cluster and browser host, perform the following steps :

The clocks of all the nodes in your cluster and the machine that runs the browser through which you access the Ambari Web interface must be able to synchronize with each other.

To install the Network Time Protocol (NTP) service and ensure it starts on boot, run the following commands on each host:

• RHEL 8

yum install chrony

systemctl enable chronyd

systemctl start chronyd

• Ubuntu 20

apt-get install ntp 

update-rc.d ntp defaults