rsync

I use Ubuntu servers in various places. I've built a terabyte backup server that reaches out and grabs various files from other servers for a longer term storage using rsync over ssh.

Works like a charm!

Unfortunately I neglected to check it's SSH key's after I installed the security upgrades for Ubuntu after the SSH vulnerability was announced, and the key it was using was invalidated so all the rsync connections were failing.

I really should implement some sort of real network backup system one day so I'd be notified if something failed. In the meantime I've replaced the key pair and everything's working fine again.