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To see the status of the clocks and the delay with the references, use the command

chronyc sources

Logs of timemaster service are also useful to spot any errors:

systemctl status timemaster

Virtual machine synchronization

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This canbe done with the toolphc2sys from the linuxptp package :

phc2sys -s /dev/ptp0 -c CLOCK_REALTIME -O 0 -m -q

This command can be put in a systemd service to automatically synchronize the clocks at the start of the VM.

This can also be done inside the chrony configuration file with the command

refclock PHC /dev/ptp0 poll 3 dpoll -2 offset 0

Grand master simulation

Warning: This section is for test only. It is not intended to be used in a real environment.

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