[ntp:questions] question regarding NTP configuration for clusters, and "cluster time" stability

Terje Mathisen Terje.Mathisen at tmsw.no
Wed Oct 7 10:19:11 UTC 2009


rotordyn at yahoo.com wrote:
> On Oct 6, 1:04 pm, Unruh<unruh-s... at 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.

No, you do not!

If you insist that you have to do this, and cannot have any independent 
internal ref clocks, then you are simply trolling, since your (always 
subtly changing) requirements change each time we suggest something.

> An unlikely scenario, but not solving it is worse than the
> current implementation, where we don't use external UTC
> sources.

This is bogus.

Terje

-- 
- <Terje.Mathisen at tmsw.no>
"almost all programming can be viewed as an exercise in caching"




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