Global change of ip

[Kevin Darcy]

Scott Haneda wrote:
> I have an A record change that needs to happen across many zones. I  
> have the old ipand of course the new ip. Can someone help me with a  
> command to find and replace across multiple files please.
>
> I also will need to do a serial update as well, and that could be any  
> number and not cinsistant.
>
> I am using unix not windows.
>
>   
Editing zonefiles safely, and updating serial numbers, is a pain in the 
butt. That's why I migrated towards using Dynamic Update exclusively for 
all updates. You could put a loop around

zone $ZONE.
prereq yxrrset foo.$ZONE. a 1.2.3.4
update delete foo.$ZONE. a
update foo.$ZONE. 10800 a 5.6.7.8
send

and be done with it. Note that the prereq is optional, and its only 
purpose is to get a meaningful error code if there is a bug or 
malfunction in the higher-level logic, or a concurrency issue (i.e. 
someone else changing the record at the same time).

The Net::DNS module of Perl has more scriptable Dynamic Update 
capabilities, and can even sign the updates with a TSIG key.

- Kevin