I have rsync working
I got the Pi to make an ssh key
And install it on the remote Pi
I would like to understand properly how this works as I think it fell over once I started to move boxes around. Ip addresses stayed the same.
I need 192.168.1.100 to rsync with 192.168.1.110 and .120
.110 is my raspberry Pi in the car with a GPS running on a backup battery.
When I am in the drive way the hq Pi rsync the GPS logs from the car