I want to migrate some of my services (Pihole, Unbound, Letsencrypt / certbot, PiVPN) from my RPi 4 to a RPi 3 B+.
Which way would you recommend?
- Install EVERYTHING fresh and config new (the cleanest way, I guess)
- A complete fresh install of dietpi, install the desired software also fresh and only copy the configs to new device
- Install a fresh dietpi, then use a backup from the old device and delete the software I don’t want from the new device
- Clone/copy the whole current dietpi installation to another medium and just plug in into the RPi 3 (will this even work?)