On Sat, Nov 05, 2005 at 11:20:05PM +1030, Tim wrote: > > But this can also be accomplished by using an A record that points to > > 10.0.0.1 instead of the CNAME... > > I think that the usefulness of Paul's example is that you can change the > machine acting as "myserver" with one record change (the A record for > "myserver". Alternatively, if you made all the next three records "A" > records with the same IP address, you'd need to change all of them. Oh, come now... If this is genuinely a problem for you, then you need to spend some time learning how to use your favorite editor, or find a better one... If the records are all in the same zone, as in Paul's example, almost any editor can search-and-replace all instances of the IP address quite simply. With vi(m), this will do it: :%s/<old IP>/<new IP>/g [You may need to remember to quote the '.' characters in the IP address to guarantee an exact match. I can't remember if vi supports the '%' address range or not, but if it doesn't, you can replace it with "1,$"] If your site is so dynamic that you find yourself doing this quite often, and/or it needs to be done across many zone files, then you should keep a little sed script (or equivalent) to do it for you. I can write a shell script to do this for you in a handfull of lines... I'd be happy to provide it if you like. :) > Of course, if you hadn't used domain names (harping on about a prior > thread), and configured all your clients with IP addresses, you'd have > to configure all the other machines when you changed a server. ;-\ I'm reluctant to respond to this because you've taken the point of that thread totally out of context. That said, on the client side, if one were to use IP addresses only (and by the way, I only suggested that once, totally as a joke) the only configuration that needs changing is the user's brain... ;-) [The entire remainder of that thread, save that one line I wrote as a joke, was about whether there was any technical requirement to use FQDNs. You can use host names without using FQDNs -- using only IPs is not the only alternative. Let's not rehash the practicalities and ramifications of that again, shall we?] -- Derek D. Martin http://www.pizzashack.org/ GPG Key ID: 0x81CFE75D
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