[CentOS] can't ssh into C7 host

Sun Jul 19 02:27:59 UTC 2015
Tim Dunphy <bluethundr at gmail.com>

Cool thanks! I'll check it out.

On Sat, Jul 18, 2015 at 9:56 PM, Alexander Dalloz <ad+lists at uni-x.org>
wrote:

> Am 19.07.2015 um 01:58 schrieb Tim Dunphy:
>
>> hey guys,
>>
>> Yesterday I had no trouble loggging into this database host. But today for
>> some reason I can't log in using my RSA key and password authentication
>> doesn't work either.
>>
>> I am able to log onto the host via console. And I was able to grab the ssh
>> config file. Here it is:
>>
>> [root at db1 ~]# grep -v '#' /etc/ssh/sshd_config  |sed '/^\s*$/d'
>>
>
> egrep -v '^#|^$' /etc/ssh/sshd_config
>
> would be straighter.
>
>  HostKey /etc/ssh/ssh_host_rsa_key
>> HostKey /etc/ssh/ssh_host_ecdsa_key
>> SyslogFacility AUTHPRIV
>> AuthorizedKeysFile .ssh/authorized_keys
>> PasswordAuthentication yes
>> ChallengeResponseAuthentication no
>> GSSAPIAuthentication yes
>> GSSAPICleanupCredentials yes
>>
>> So I performed a verbose ssh login, and this is what I saw:
>>
>>
>> #ssh -vvv bluethundr at db1.example.com
>>
>> OpenSSH_6.2p2, OSSLShim 0.9.8r 8 Dec 2011
>>
>> debug1: Reading configuration data /Users/MyUser/.ssh/config
>>
>
> Odd path.
>
>  debug1: /Users/MyUser/.ssh/config line 4: Skipping Host block because of
>> negated match for *.example.com
>>
>> debug1: Reading configuration data /etc/ssh_config
>>
>> debug1: /etc/ssh_config line 20: Applying options for *
>>
>> debug2: ssh_connect: needpriv 0
>>
>> debug1: Connecting to db1.example.com [104.131.222.29] port 22.
>>
>> debug1: Connection established.
>>
>> debug3: Incorrect RSA1 identifier
>>
>> debug3: Could not load "/Users/MyUser/.ssh/id_rsa" as a RSA1 public key
>>
>
> What's wrong there?
>
> [ ... ]
>
>  debug1: Local version string SSH-2.0-OpenSSH_6.2
>>
>> debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1
>> Debian-5
>>
>> debug1: match: OpenSSH_6.7p1 Debian-5 pat OpenSSH*
>>
>
> I don't see CentOS 7 involved here, neither local nor remote.
>
> [ ... ]
>
>  debug1: Offering RSA public key: /Users/MyUser/.ssh/id_rsa
>>
>> debug3: send_pubkey_test
>>
>> debug2: we sent a publickey packet, wait for reply
>>
>> debug1: Authentications that can continue: publickey,password
>>
>> debug1: Trying private key: /Users/MyUser/.ssh/id_dsa
>>
>> debug3: no such identity: /Users/MyUser/.ssh/id_dsa: No such file or
>> directory
>>
>> debug2: we did not send a packet, disable method
>>
>> debug3: authmethod_lookup password
>>
>> debug3: remaining preferred: ,password
>>
>> debug3: authmethod_is_enabled password
>>
>> debug1: Next authentication method: password
>>
>> bluethundr at db1.example.com's password:
>>
>>
>> Can anyone give me a heads up as to why this is failing?
>>
>
> Read the syslog() logfile of the SSH daemon logging. That should give you
> a hint.
>
>  Thanks,
>>
>> Tim
>>
>
> Alexander
>
>
>
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