Host synchronization

The hosts use 2 protocols will be charge to synchronize the system's time:

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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 and ntp_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

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