[ntp:questions] Decommission NTP server

Terje Mathisen "terje.mathisen at tmsw.no" at ntp.org
Wed Aug 25 15:12:58 UTC 2010

John Kennedy wrote:
> We have an NTP server that we want to decommission. Before we do this we
> need to know which servers are using this server to their time. Is there a
> way to log which servers are syncing off of this server?
> I have looked at the logconfig directive and can not find enough info on it.
> I have tried logconfig=all but that does not help.

'ntpdc -c monlist' is your friend, it will list the last 600-700 clients.

If you have a lot more clients than this, then you'll have to either 
install a new/dev ntpd version or insert WireShark or a similar sniffer 
on a mirror of the server switch port.


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

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