I have 6 devices that i rsync to a central location to back them up. Ive been using ssh as the -e option. Problem is i use public key with passphrases, meaning to backup all six i need to go to each device and run the backup script. Since i typically backup /etc, /home, and /root this means entering sudo and the ssh passphrase 3x for each device.
I would much prefer a script that runs on back storage device that can pull the data from each device without having to use ssh (encryption is not necessary since all traffic is either local or going through a vpn connection).
I could then put this script in root’s crontab or make it a systemd service running as root.
But i dont know how i can remote sync without ssh
It is still many times more secure than using something unencrypted.
If you are truly paranoid you could also use something like borg in append only mode though and put that into a chroot with just the necessary tools on the server side.
Yeah, i think im gonna look into rrsync and try to set up a user with a password-less key