Configure NTP to synchronize the clock in HDFS Transparency

For distributed cluster, configure NTP to synchronize the clock in the cluster. If the cluster can access the internet, take the public NTP servers to synchronize the clock on the nodes. However, if the cluster does not have access to the internet, then configure one of the nodes as the NTP server so that all the other nodes will synchronize the clock according to that NTP server.

Refer to the CONFIGURING NTP USING NTPD to configure NTP on RHEL 7.

HDFS Transparency requires the clock to be synchronized on all nodes. Otherwise potential issues will occur.