I have Centos running on an internet-connected computer, running i386 versions of some packages like MySQL. I want to make a directory tree that I can put on removable media and put in a non-internet-connected computer which is running different software, and/or x86_64 versions of the same software.
Accomplishing this seems to have something to do with yum-utils and maybe /etc/rpm/platform, but I haven't found clear documentation on doing it without clobbering the currently installed software.
I especially haven't found any documentation on doing this on an ongoing basis--doing regular updates to the packages installed on the air-gapped computer.