We're in the process of moving applications from our USA server to our UK based server; They're basically the same platform (LAMP) slightly different versions but not enough to cause too much of an issue.
The question I have is: We have domain names for each of the applications, all registered to the nameservers of the US box, and they will need to be changed to those of the UK box - this is quite easy to change but would result in clients going to either box depending on how the chain between them and the server caches the dns records.
Once the name servers have been changed, is it possible to get the OLD server (in the US) to somehow redirect clients to the new box via IP?
The way we have apache running is using virtual hosts so all the application requests need to look like they came from the right domain; I'm not sure if this would cause an issue either.
Many thanks, Chris