Moving from 64-bit Amazon EC2 instance to 32-bit instance, keeping filesystem intact

I've set up my web application on a Micro EC2 instance, and have spent quite some time installing necessary software and files. Now, I want my same setup but on a High CPU Medium instance. However, the High CPU Medium instance only supports 32-bit OS, whereas my Micro instance is currently 64-bit, so I can't even attach my 64-bit EBS volume to the 32-bit instance's root.

How can I copy my setup over to the开发者_C百科 32-bit instance without having to reinstall everything?

What OS is this? You very likely have 64-bit binaries installed, so you can't simply rsync/copy over the root ('/') from one instance to the other. If you installed packages using yum or apt, you should be able to do something like this:

1. Start the new c1.medium instance
2. Install the exact same packages using the package manager, which will pull in 32-bit binaries
3. rsync/copy over /etc/ and any other text configuration files over
4. dump your db and reimport into the db running on your c1.medium instance

However, I wouldn't recommend using c1.medium. If you ever need to grow, you're going to be forced to do the 32-bit -> 64-bit migration in the future. This is potentially much easier, as 32-bit binaries will run on a 64-bit system, but you might as well save yourself some time now and just jump to a m1.large. Unfortunately Amazon doesn't have anything in between, in terms of RAM.