[ntp:questions] ntpd on dial up machine: no DNS resolving => giving up on all servers
arno.wald at netcologne.de
Sun Jun 7 09:24:50 UTC 2009
Harlan Stenn wrote:
> There is an option to have ntpd retry failed DNS lookups for "longer".
> This is in ntp-dev however (which is about to become ntp-4.2.6).
It would be good if a retry for a lookup would be started in case of a new
network interface is showing up, too.
Also if a ntp-server is no longer reachable it would be good to recheck the
IP address. E.g. if you are using a ntp-server-pool name and retrieve a
"random" IP address from this pool and the server is going offline after
some days, it would be a good idea to retrieve a new IP address.
> Use IP numbers instead of names.
I do not like to hard wire IP addresses in configs. It is less robust IMHO.
Also you drop the functionality of using server-pools.
> Get a reasonably inexpensive GPS device and use that for time (or if
> geographically convenient, one of the radio refclocks).
This is a nice idea. But maybe it is a little bit oversized for just a
simple working PC? But I keept it in mind.
> You really only want to prevent ntpd from stepping the time backwards.
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