Back In Time

Named host not found in known_hosts

Asked by Jim Cunning

I have created a password-less login to a remote host to use for my backups there. The ssh login works from the command line and ssh says it has added the hosts key to .ssh/known_hosts, but Back In Time complains that the host name was not found. Openssh no longer stores the public key of known hosts with the cleartext name or IP address of the host, but using ECDSA. I don't know the format of this key, nor how to get Back In Time to recognize it. Does anyone have any suggestions?

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Germar (germar) said : 		#1

Hi Jim,
which distribution do you use? What is your OpenSSH version? Can you please post the output of 'ssh-keygen -F <HOST>'?

Thanks and regards,
Germar

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Jim Cunning (jcunning) said : 		#2

~$ rm .ssh/known_hosts
~$ cat /etc/issue
Ubuntu 12.04.2 LTS \n \l
~$
~$ ssh -V
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
~$
:~$ ssh -pxx22 <email address hidden>
The authenticity of host '[office.xxxxxxxx-sd.net]:xx22 ([xx.xxx.xxx.xx]:xx22)' can't be established.
ECDSA key fingerprint is c8:5b:d0:aa:51:15:64:5d:95:f6:9f:f3:b4:90:48:01.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '[office.xxxxxxx-sd.net]:xx22,[xx.xxx.xxx.xx]:xx22' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 11.04 (GNU/Linux 2.6.38-15-generic x86_64)

 * Documentation: https://help.ubuntu.com/
New release 'oneiric' available.
Run 'do-release-upgrade' to upgrade to it.

Last login: Tue Feb 19 10:20:31 2013 from ipxx-x-xxx-xx.sd.sd.cox.net
$
Connection to office.xxxxxxx-sd.net closed.
~$ ssh-keygen -F office.xxxxxxxx-sd.net
~$

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Germar (germar) said : 		#3

That's because of the port is not 22. I opened a bug for this. Please find the patch that I provide in that bug-report.

Regards,
Germar

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