SSH keys not saved across reboots #9
Description
There is a mechanism in the boot script firmware/ori/board/pluto/S21misc that enables SSH keys stored in the volatile RAM copy of /root/.ssh/authorized_keys to be saved in the JFFS2 filesystem and restored after a reboot. This is very convenient for automated testing and also for interactive debugging at a shell prompt. Typically, the user would use ssh-copy-id on their local host to place their public key into authorized_keys on the Pluto, and then run the command device_persistent_keys on the Pluto. See analogdevicesinc/buildroot#43
This mechanism is not working on our build, apparently because we have an authorized_keys file in an overlay. Here: firmware/ori/board/pluto/overlay/root/.ssh/authorized_keys
That file from the overlay overwrites the restored authorized_keys file immediately upon reboot, defeating the ability to make non-volatile changes to the authorized keys database. I believe the fix is simply to delete that file from the repo.