alt Hacker Newstechnically if you have 3 or more sources that would be caught; NTP protocol was designed for that eventuality
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da_chicken • yesterday at 12:55 PM
Sure, but not needing a failure to cascade to yet another failsafe is still a good idea. After all, all software has bugs, and all networks have configuration errors.
> technically if you have 3 or more sources that would be caught; NTP protocol was designed for that eventuality
Either go with one clock in your NTPd/Chrony configuration, or ≥4.
Yes, if you have 3 they can triangulate, but if one goes offline now you have 2 with no tie-breaker. If you have (at least) 4 servers, then one can go away and triangulation / sanity-checking can still occur with the 3 remaining.