[Cialug] SSH says: Permission denied (publickey).

[Scott Yates]

I thought you needed your public key stored in the ~/.ssh folder in order
to use private key authentication.  You might try ssh-copy-id to get your
keys set up properly.


On Wed, Nov 7, 2018 at 8:56 AM Todd Walton <tdwalton at gmail.com> wrote:

> I have a couple of servers on AWS. I wanted to move one to a different
> subnet in the same VPC, so I stopped the server, created an image from
> it, then using that image launched a new server in a new subnet. The
> resulting server is the same as it was, but with a new IP address.
>
> However, I can't ssh to it. I can do 'ssh todd at old_ip' and it asks me
> for my password and logs me in. But when I 'ssh todd at new_ip' it says
> "Permission denied (publickey)".
>
> I was able to get into the new server / new ip by using the default
> user. So I looked at my user account on the old instance and the new
> instance. There's nothing different. My ~/.ssh directory is empty on
> both. /etc/ssh/sshd_config is exactly the same on both, right down to
> the md5sum. And I'm obviously using the same ssh client for both from
> my local workstation.
>
> Here's sshd_config on the server:
>
>  Protocol 2
>  SyslogFacility AUTHPRIV
>  PermitRootLogin no
>  RSAAuthentication yes
>  PubkeyAuthentication yes
>  AuthorizedKeysFile    .ssh/authorized_keys
>  PermitEmptyPasswords no
>  PasswordAuthentication yes
>  ChallengeResponseAuthentication no
>  GSSAPICleanupCredentials yes
>  UsePAM yes
>  AcceptEnv LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY
> LC_MESSAGES
>  AcceptEnv LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT
>  AcceptEnv LC_IDENTIFICATION LC_ALL LANGUAGE
>  X11Forwarding no
>  ClientAliveInterval 60
>  UseDNS no
>  Banner /etc/ssh/banner
>  Subsystem    sftp    /usr/libexec/openssh/sftp-server
>
> Anyone have a guess as to what's happening?
>
> --
> Todd
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