For troubleshooting on a Quantal setup, I have been trying and failing
to get ssh access to LTSP clients. I set ssh as un-removed in lts.conf,
set "PasswordAuthentication yes" in /etc/ssh/sshd_config, then updated
the image. I can tell from the forwarded syslog that sshd is listening
on port 22. But "ssh <client IP>" or "ssh <user>@<client IP>" fails
from a server xterm with "Read from socket failed: connection reset by
peer" and in the forwarded client syslog I see:
Dec 4 15:23:53 ltsp135 sshd[3179]: error: Could not load host key:
/etc/ssh/ssh_host_rsa_key
Dec 4 15:23:53 ltsp135 sshd[3179]: error: Could not load host key:
/etc/ssh/ssh_host_dsa_key
Dec 4 15:23:53 ltsp135 sshd[3179]: error: Could not load host key:
/etc/ssh/ssh_host_ecdsa_key
Dec 4 15:23:53 ltsp135 sshd[3179]: fatal: No supported key exchange
algorithms [preauth]
I also tried ssh -o PreferredAuthentications=password with the same result.
My only thought concerns the fact that I created the NBD image with
"ltsp-update-image --cleanup /" and --cleanup temporarily removes the
user accounts, logs, caches, etc. If that means that it removed my
.ssh/known_hosts file, then perhaps that somehow explains the behavior.
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