I have a few Xen guests that are very similar: same arch, same OS (Debian), usually the differences are in RAM and disk space. I'd like to use specific VMs for specific tasks, i.e. one for VPN and SSH, another for webserver, etc.
Most guides out there show how NFS is neat to export /home, but what i'm interested in is in exporting the base system, like /usr/bin, /sbin, etc... (actually maybe not /etc because of specific software).
I considered shoving everything new (non-base/specific) to /user/local and export only that, but i'd have to keep a zero-conf-ish structure there and would break compatibility with the package manager, voiding any system upgrade.
I guess i'm looking for something like a variation of dumb terminals.
Is this feasible? Any big pros and cons?