I suspect this has to do something with my Ubuntu laptop. I am not sure 
what or maybe some qemu version on ubuntu?

On Saturday, August 25, 2018 at 9:53:13 PM UTC-7, [email protected] wrote:
>
> I have tried to use example json from packer website. I am using CentOS 
> minimal ISO though. I never get a SSH connection and things just timeout. 
> Is this known, how do I get around it? I am simply not able to proceed with 
> packer at all. I really want to use this tool for a product we are building.
>
>
> 2018/08/25 09:46:53 packer: 2018/08/25 09:46:53 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:46:53 packer: 2018/08/25 09:46:53 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:46:53 packer: 2018/08/25 09:46:53 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:46:53 packer: 2018/08/25 09:46:53 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:46:53 packer: 2018/08/25 09:46:53 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:00 packer: 2018/08/25 09:47:00 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:00 packer: 2018/08/25 09:47:00 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:00 packer: 2018/08/25 09:47:00 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:00 packer: 2018/08/25 09:47:00 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:00 packer: 2018/08/25 09:47:00 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:07 packer: 2018/08/25 09:47:07 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:07 packer: 2018/08/25 09:47:07 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:07 packer: 2018/08/25 09:47:07 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:07 packer: 2018/08/25 09:47:07 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:07 packer: 2018/08/25 09:47:07 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:14 packer: 2018/08/25 09:47:14 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:14 packer: 2018/08/25 09:47:14 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:14 packer: 2018/08/25 09:47:14 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:14 packer: 2018/08/25 09:47:14 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:14 packer: 2018/08/25 09:47:14 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:21 packer: 2018/08/25 09:47:21 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:21 packer: 2018/08/25 09:47:21 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:21 packer: 2018/08/25 09:47:21 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:21 packer: 2018/08/25 09:47:21 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:21 packer: 2018/08/25 09:47:21 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:28 packer: 2018/08/25 09:47:28 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:28 packer: 2018/08/25 09:47:28 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:28 packer: 2018/08/25 09:47:28 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:28 packer: 2018/08/25 09:47:28 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:28 packer: 2018/08/25 09:47:28 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:35 packer: 2018/08/25 09:47:35 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:35 packer: 2018/08/25 09:47:35 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:35 packer: 2018/08/25 09:47:35 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:35 packer: 2018/08/25 09:47:35 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:35 packer: 2018/08/25 09:47:35 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:42 packer: 2018/08/25 09:47:42 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:42 packer: 2018/08/25 09:47:42 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:42 packer: 2018/08/25 09:47:42 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:42 packer: 2018/08/25 09:47:42 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:42 packer: 2018/08/25 09:47:42 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:49 packer: 2018/08/25 09:47:49 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:49 packer: 2018/08/25 09:47:49 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:49 packer: 2018/08/25 09:47:49 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:49 packer: 2018/08/25 09:47:49 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:49 packer: 2018/08/25 09:47:49 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:56 packer: 2018/08/25 09:47:56 [INFO] Attempting SSH 
> connection...
> 2018/08/25 09:47:56 packer: 2018/08/25 09:47:56 [DEBUG] reconnecting to 
> TCP connection for SSH
> 2018/08/25 09:47:56 packer: 2018/08/25 09:47:56 [DEBUG] handshaking with 
> SSH
> 2018/08/25 09:47:56 packer: 2018/08/25 09:47:56 [DEBUG] SSH handshake err: 
> ssh: handshake failed: ssh: unable to authenticate, attempted methods 
> [none], no supported methods remain
> 2018/08/25 09:47:56 packer: 2018/08/25 09:47:56 [DEBUG] Detected 
> authentication error. Increasing handshake attempts.
> 2018/08/25 09:47:56 ui error: ==> qemu: Error waiting for SSH: ssh: 
> handshake failed: ssh: unable to authenticate, attempted methods [none], no 
> supported methods remain
> ==> qemu: Error waiting for SSH: ssh: handshake failed: ssh: unable to 
> authenticate, attempted methods [none], no supported methods remain
> 2018/08/25 09:47:56 ui error: ==> qemu: ssh: handshake failed: ssh: unable 
> to authenticate, attempted methods [none], no supported methods remain
> ==> qemu: ssh: handshake failed: ssh: unable to authenticate, attempted 
> methods [none], no supported methods remain
> 2018/08/25 09:47:56 ui: ==> qemu: Step "StepConnect" failed
> ==> qemu: Step "StepConnect" failed
> 2018/08/25 09:47:56 ui: ask: ==> qemu: [c] Clean up and exit, [a] abort 
> without cleanup, or [r] retry step (build may fail even if retry succeeds)?
> ==> qemu: [c] Clean up and exit, [a] abort without cleanup, or [r] retry 
> step (build may fail even if retry succeeds)?
>

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