Host synchronization
The hosts will be charge to synchronize the time both with NTP and PTP with timemaster
. It's configured during the network (see Network architecture section).
chrony
synchronize the system clock with NTP on specified servers with (ntp_primary_server
andntp_secondary_server
).ptp4l
synchronize the hardware clock (PHC) with PTP.phc2sys
synchronize clocks (hardware and system).
With PTP, the system will have a better precision. So, in the cluster, all hosts will be on the same time. It's important when hosts want to add resource in the shared storage.