I just set my TTL really low a few days in advance. Some DNS servers don't like the low TTL (AOL didn't, but they appear to honor it now). I usually set it for 5 minutes or so, sometimes less depending on how critical it is. > -----Original Message----- > From: David Phillips [mailto:david at acz.org] > Sent: Saturday, July 26, 2003 2:35 AM > To: tclug-list at mn-linux.org > Subject: Re: [TCLUG] DNS Resolutions > > > Mark Courtney writes: > > Is there a way to go about this IP changing without having the > > downtime while waiting for all the DNS servers on the > Internet to get > > the new IP? > > Well in advance of the change, set your TTLs very low. tinydns can > dynamically adjust TTLs and automatically switch between two > IP addresses at > a specified time. This will help eliminate down time, but > won't work for > everything, as some DNS caches do not respect low TTLs. > > The only solution is to have the affected services operating > on both sets of > IP addresses during the transition period. This can be > difficult, but it is > a requirement. You normally have no way to control the TTLs > on your name > server glue records. > > Your procedure is overly complex because you should not have > to rename your > name servers. Setup name service on both sets of IP > addresses. Serve the > old addresses from the old name servers and new addresses > from the new name > servers. Then simply update the IP addresses of the name > servers with your > registrar (which updates these glue records with the registry). > > -- > David Phillips <david at acz.org> > http://david.acz.org/ > > > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > http://www.mn-linux.org tclug-list at mn-linux.org > https://mailman.real-time.com/mailman/listinfo/tclug-list > _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list