On Oct 6, 1:04 pm, Unruh <unruh-s...@physics.ubc.ca> wrote: > That is why you do not use ONE external source, you use at least 4, so > that such bad behaviour from one does not destroy your system.
I still have to allow for the general case, where for N servers, N-1 go offline while the last returns bad inputs to the system. An unlikely scenario, but not solving it is worse than the current implementation, where we don't use external UTC sources. > You have > the same problem. What happens if your internal node A jumps by 5 min. > What do the rest of your internal machines do? If it is among the internal servers, I believe the rest of the system will consider it a falseticker and not use it. While the cluster software will detect the local clock is too far off cluster time and shut down. What makes that less likely is that the nodes are internal to the cluster, and are pretty tightly locked down. While any external references are beyond our control. thanks, tim _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions