transfer - Migrating server configuration to new machine

I have a VServer (Ubuntu 14.04) with some problems, where reinstalling the OS was suggested here and also by the hoster.

I was planing to clone all the configuration, installed packages etc. except the few faulty ones of course. I found a lot of instruction how to migrate different parts of the OS but no full how to/script. Since I'm very suprised about this fact I was wondering if somebody knows one.

It should include:

• users


• home


• /etc


• installed


• packages


• /var/www


• /var/vmail


• /opt


• databases: mysql and postgresql


• etc.

limitations are:

• the servers do not have the same hardware


• i can't install packages on the source system


• only ssh access