On Mon, Jul 22, 2019 at 12:05:41AM +0200, Thomas Hedberg wrote: > Hi Hal > > What about a http lookup using curl or something similar at > https://www.ntppool.org/scores/X.X.X.X/log?limit=1&monitor=* ? > > It will give you the current score of the IP and probably an error if the > IP is not in the pool anymore.
That might work, but I'm not sure if the admins would be happy with millions of clients periodically making HTTP requests to their servers. Something with DNS might be cheaper, but probably still a significant burden on the resources. When a server is removed from the pool, I think the best thing to do is to stop responding. Most clients will switch to another pool server within few polling intervals. The rest will not bother to check a URL or special DNS name to see if the server is still in the pool. -- Miroslav Lichvar _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
