Can't SSH in to Kubic after flashing (Raspberry Pi)

English Install/Boot/Login
1

I’ve just flashed the latest Raspberry Pi image of Kubic (with kubeadm) to a MicroSD card. Normally, I haven’t been able to get Combustion to work on the first boot of these systems, so I go ahead and preload my authorized keys into the root home directory using a series of commands like this as the superuser (so I can run the Combustion script manually by logging in via SSH):


mount /dev/sdb2 -o noatime,subvol=@/root /mnt
mkdir -p /mnt/.ssh
chmod 0700 /mnt/.ssh
curl "https://github.com/stuartpb.keys" > /mnt/.ssh/authorized_keys
chmod 0600 /mnt/.ssh/authorized_keys
sync
umount /mnt

I’ve verified that the file is present with all the keys I’d expect, and have even plugged a screen into my Pi to make sure I’m getting the IP address correct, but when I try to ssh root@192.168.0.127, I get prompted for the password.

Am I doing something wrong here? Is the root subvolume no longer getting mounted to the root home directory? How can I at least increase the amount of on-screen logging I can see to understand what’s happening here?

2

UPDATE: After inspecting the /var subdirectory and taking a look at the journal, I’m seeing this:


-- Boot 000801fa67914b6cb37594972487449e --
Sep 09 17:24:07 localhost sshd[2360]: Authentication refused: bad ownership or modes for directory /root
Sep 09 17:24:08 localhost sshd[2360]: Connection closed by authenticating user root 192.168.0.99 port 55944 [preauth]
Sep 09 17:24:14 localhost sshd[2363]: Authentication refused: bad ownership or modes for directory /root
Sep 09 17:29:42 localhost sshd[2910]: Authentication refused: bad ownership or modes for directory /root
Sep 09 17:29:45 localhost sshd[2910]: Connection closed by authenticating user root 192.168.0.124 port 57552 [preauth]

This seems like an odd bug that’s out of my hands (don’t the modes for /root depend on how it’s mounted?), so I’m filing an issue on Bugzilla.

3

Link to the issue on Bugzilla: https://bugzilla.opensuse.org/show_bug.cgi?id=1190365