On Wed, 2004-09-22 at 15:42, Pete Templin wrote: > Tinus Nijmeijers wrote: > > just wanted to run this by some people more knowledgeable than myself. > > please tell me if I'm wrong. > > > > -at the registrar: change the IP of dns0.domain.net to the IP of NEW > > -change the zone files on OLD and NEW to reflect the move to the new IP > > -wait a couple of days for everyone to catch up. > > -take OLD down. > > (Personal opinion being spoken here) > > This is the way 90% of the 'Net does renumbering, and it's wrong, or at > least not nearly as effective as better ways which aren't that hard to do. > > Treat registrar changes (i.e. which DNS servers to use) and host changes > (i.e. what's the ip address of www.somewhere.com) as two totally > separate events, as follows:
Bit late in reacting here,sorry. busy. regarding the 2 events below: is this also the order in which to do them? > Host changes: > 1) As someone else pointed out, lower the TTL values for any/all hosts > that are going to move. This needs to be done at least 2x(current TTL) > before the move to get maximum consistency ok. > . > 2) Move (renumber) the hosts, change the host records in the zone > file(s), and restore the TTL to your operational default. what do you mean by renumbering? > 3) Aside from broken resolvers, the transition will only take as long as > the short TTL you used temporarily, and/or the time needed to > successfully renumber your hosts. THIS DOES NOT TAKE 2-3 DAYS, unless > it's poorly executed. > > Registrar changes: > 1) Be sure to have a new DNS server while leaving the existing DNS > server operational. got that. > 2) Set up all relevant zone files on the new DNS server with the proper > host information (i.e. it could be a secondary/slave from the old DNS > server, or just scp the zone files over, etc.). scp . > 3) Make the changes at the registrar. > 4) If you need to change any zone file information, be sure the change > occurs on both old and new DNS servers. when? after making the changes at the registrar? (just making sure that you're advice is in chronological order) > 5) No matter which GTLD server and which SLD server a client's resolver > contacts, it'll always get the right information. > thanks. so getting back to my original idea, with added advice: -change TTL -(wait > 2* original TTL) -move over data (assuming data is not changed during this time) -change zone files to reflect new situation & redirect any web/pop/smtp/ftp connections -change host record of main DNS at the registrar -wait a bit & take OLD down. that right? thanks, tinus -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
