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Old 26th March 2008, 20:04
brunus brunus is offline
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I've called it a victory too early!

i've restored the entire / in the target machine, which means even the /root/.ssh folders, which led to an unmatching couple of ssh-rsa keys, and consequently the backup is not working after the restore.

I've successfully created 2 new ssh-rsa keys, following your tutorial, and now I get to log password-less as backuppc becoming root:
$ ssh -l root whoami
$ root

Nonetheless, I get the same hideous error:
Running: /usr/bin/ssh -q -x -l root efbujagateway /usr/bin/rsync --server --numeric-ids --perms --owner --group -D --links --hard-links --times --block-size=2048 --relative --ignore-times --recursive . /
Xfer PIDs are now 15583
Read EOF: Connection reset by peer
Tried again: got 0 bytes
Done: 0 files, 0 bytes
restore failed: Unable to read 4 bytes

I really don't see how I can troubleshoot this any further
Where should I look? Which logs?


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Old 28th March 2008, 15:09
brunus brunus is offline
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Ok, back on again.
Apparently the problem resides on the fact that despite the backuppc server asks for a machine fingerprint when connecting for the first time to the target machine when doing the ssh-rsa key exchange via scp, this is not enough. In fact, I've tried a manual dump as suggested in the backuppc troubleshooting hits, and ssh did ask once more to add the client's fingerprint to known_hosts before performing the dump. After that, everything started to work normally again.

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