System clock sync preflight check in airgap environment


I have a single node airgap environment that is failing in the system clock synchronisation preflight check since there is no NTP server in the system.
I was wondering if the best approach would be to disable the check (will the cluster work without it?) or to enforce an installation of an internal NTP server.

(The specific check is part of the default host preflight checks -


The cluster will work without NTP… Assuming all the nodes have synchronized clocks. (I can say that “within 30 seconds” is not good enough from experience)

NTP also helps prevent the clocks from drifting apart over time, and I would recommend finding a way to enable it if you are planning on running multiple nodes here.

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