[ntp:questions] Using two NTP Server: Bad?
benr at cuddletech.com
Thu Apr 21 01:14:36 UTC 2011
I've read in the past that clients should always have an odd-number of
NTP servers; 1 server or 3 servers but not 2. If I recall the reason
was that clients could become "confused" and needs a tie breaker.
Question 1: I want to challenge this old assumption. Is there truth to
In many environments there is a desire to have 2 NTP servers for
redundancy purposes, but not 3 due to limited resources.
Question 2: Furthermore, if you have 2 local NTP servers is it
preferable to have them sync off of different sources to avoid a client
syncing servers that are using the same reference clock? ie: Is this bad?:
$ ntpq -pn
remote refid st t when poll reach delay offset
*10.0.91.10 22.214.171.124 3 u 756 1024 377 0.494 0.596
+10.0.91.82 126.96.36.199 3 u 953 1024 377 0.135 0.144
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