Harlan Stenn <[email protected]> wrote: > Rob writes: > >> There is now one remaining issue: this pool command has added 7 pool >> servers. That is a bit too much. > > ntpd doesn't think so.
I don't like to load the pool with queries from 7 servers for a setup that only would need them to get the time when both my private servers are down. I could even use a "conditional" pool entry that it only starts using when one or both of the hardwired servers fail. >> I already have two hardwired own servers and only wanted to add maybe >> 2 pool members to have redundancy. > > What about specifically using two "server" entries then? You'll still > need the "restrict source" directive because the IPs are unknown. No, I tested that and the restrict source is NOT required in that case! That is what made it so puzzling for me. I have tried a config with two "server pool.ntp.org" lines and it just worked. No restrict lines other than the default required! The reason I wanted to try the "pool" directive is that it promises to refresh the DNS entry when the server fails. I don't like to keep polling the pool servers for a long time (these systems may well be up for a year with no reboot) after they have decided to leave the pool or not to serve time anymore. >> I would have expected a "members" option for the pool directive, but >> there does not appear to be one. > > Please describe what you think this "members" option should do. It would determine the number of servers that "pool" attempts to add to the running config. > NTP is a low-load service, and accurate time can be a critical need. In the parts of the system where we have critical time needs we have a local GPSDO with PPS. This is only for those systems that do not require such accuracy, but are not on our LAN. They are on internet with a VPN, but I like them to acquire time even when the VPN does not come up, and our own servers are not reachable. _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
