Quick question, why does it not seem to matter whether I set 
ssh_private_key_file or not?

On Thursday, February 23, 2017 at 10:09:53 PM UTC, notmyrealname wrote:
>
> Wow! I knew it would be something dumb :-)
>
> Thanks a lot.
>
> On Thursday, February 23, 2017 at 8:52:16 AM UTC, Rickard von Essen wrote:
>>
>> Most likely it's because you have the first key loaded in you ssh agent. 
>> What's the printout of:
>>
>> ssh-add -l
>> aws ec2 describe-key-pairs --output text
>>
>> On 22 February 2017 at 22:04, notmyrealname <[email protected]> 
>> wrote:
>>
>>> Hi Rickard. I just ran the build again, this time 
>>> with ssh_private_key_file set to the location of the key and unfortunately 
>>> it still failed (see log file 
>>> <https://gist.github.com/newtonne/014629e976326c7cd6365b54b82dfb48>). 
>>> Note that the build works for aws-key even if I don't 
>>> set ssh_private_key_file.
>>>
>>> On Wednesday, February 22, 2017 at 8:25:48 PM UTC, Rickard von Essen 
>>> wrote:
>>>>
>>>> When you set ssh_keypair_name to server_key you also have to update 
>>>> ssh_private_key_file. But from the logs it looks like you haven't done 
>>>> that.
>>>>
>>>> On 22 February 2017 at 20:11, notmyrealname <[email protected]> 
>>>> wrote:
>>>>
>>>>> Packer v0.12.2
>>>>> Mac OS X 10.11.6
>>>>>
>>>>> As suggested, I've moved this from the Github issues page to here as 
>>>>> this is probably the best place for it.
>>>>>
>>>>> Here are my 2 AWS key pairs on the host machine with sensible 
>>>>> permissions:
>>>>>
>>>>> ls -l ~/.ssh | grep key
>>>>> -rw-------@ server_key.pem
>>>>> -rw-r--r--  server_key.pub
>>>>> -rw-------@ aws-key.pem
>>>>> -rw-r--r--  aws-key.pub
>>>>>
>>>>> Here they are existing in AWS:
>>>>>
>>>>> aws ec2 describe-key-pairs
>>>>> {
>>>>>     "KeyPairs": [
>>>>>         {
>>>>>             "KeyName": "server_key", 
>>>>>             "KeyFingerprint": "xxxxxxxxxx"
>>>>>         }, 
>>>>>         {
>>>>>             "KeyName": "aws-key", 
>>>>>             "KeyFingerprint": "xxxxxxxxxx"
>>>>>         }
>>>>>     ]
>>>>> }
>>>>>
>>>>> The build part of my packer.json. The ami is stock ubuntu.
>>>>>
>>>>> {
>>>>>   "variables": {
>>>>>     "env": null
>>>>>   },
>>>>>   "builders": [{
>>>>>     "type": "amazon-ebs",
>>>>>     "region": "eu-west-1",
>>>>>     "source_ami": "ami-98ecb7fe",
>>>>>     "instance_type": "t2.micro",
>>>>>     "ssh_username": "ubuntu",
>>>>>     "ssh_agent_auth": true,
>>>>>     "ssh_keypair_name": "aws-key",
>>>>>     "ami_name": "{{user `env`}}-server-{{isotime 
>>>>> \"2006-01-02_15-04-05\"}}",
>>>>>     "run_tags": {"Name": "{{user `env`}}-server"},
>>>>>     "run_volume_tags": {"Name": "{{user `env`}}-server"}
>>>>>   }]
>>>>> }
>>>>>
>>>>> Everything runs fine when I set "ssh_keypair_name": "aws-key" (full 
>>>>> log 
>>>>> <https://gist.github.com/newtonne/be9c1bf107eadf3e5ff1daad2a4f18be>)
>>>>>
>>>>> 2017/02/21 19:54:04 ui: ==> amazon-ebs: Using SSH Agent for existing key 
>>>>> pair aws-key
>>>>> ==> amazon-ebs: Using SSH Agent for existing key pair aws-key
>>>>> 2017/02/21 19:54:04 ui: ==> amazon-ebs: Creating temporary security group 
>>>>> for this instance...
>>>>> ...
>>>>> ...
>>>>> 2017/02/21 19:54:21 ui: ==> amazon-ebs: Waiting for SSH to become 
>>>>> available...
>>>>> ==> amazon-ebs: Waiting for SSH to become available...
>>>>> 2017/02/21 19:54:36 packer: 2017/02/21 19:54:36 [DEBUG] TCP connection to 
>>>>> SSH ip/port failed: dial tcp 34.249.20.107:22: i/o timeout
>>>>> 2017/02/21 19:54:41 packer: 2017/02/21 19:54:41 [DEBUG] TCP connection to 
>>>>> SSH ip/port failed: dial tcp 34.249.20.107:22: getsockopt: connection 
>>>>> refused
>>>>> 2017/02/21 19:54:46 packer: 2017/02/21 19:54:46 [INFO] Attempting SSH 
>>>>> connection...
>>>>> 2017/02/21 19:54:46 packer: 2017/02/21 19:54:46 reconnecting to TCP 
>>>>> connection for SSH
>>>>> 2017/02/21 19:54:46 packer: 2017/02/21 19:54:46 handshaking with SSH
>>>>> 2017/02/21 19:54:46 packer: 2017/02/21 19:54:46 handshake complete!
>>>>> 2017/02/21 19:54:46 packer: 2017/02/21 19:54:46 opening new ssh session
>>>>> 2017/02/21 19:54:47 packer: 2017/02/21 19:54:47 [INFO] agent forwarding 
>>>>> enabled
>>>>> 2017/02/21 19:54:47 ui: ==> amazon-ebs: Connected to SSH!
>>>>>
>>>>> However, for any new keys that I create and then set as my 
>>>>> "ssh_keypair_name" (in this case "server_key"), I get the following ssh 
>>>>> authentication error: (full log 
>>>>> <https://gist.github.com/newtonne/0c2ed30182e058fcac18f2217f21c494>)
>>>>>
>>>>> 2017/02/21 19:50:59 ui: ==> amazon-ebs: Using SSH Agent for existing key 
>>>>> pair server_key
>>>>> 2017/02/21 19:50:59 ui: ==> amazon-ebs: Creating temporary security group 
>>>>> for this instance...
>>>>> ==> amazon-ebs: Using SSH Agent for existing key pair server_key
>>>>> ...
>>>>> ...
>>>>> 2017/02/21 19:51:16 ui: ==> amazon-ebs: Waiting for SSH to become 
>>>>> available...
>>>>> ==> amazon-ebs: Waiting for SSH to become available...
>>>>> 2017/02/21 19:51:31 packer: 2017/02/21 19:51:31 [DEBUG] TCP connection to 
>>>>> SSH ip/port failed: dial tcp 34.251.38.229:22: i/o timeout
>>>>> 2017/02/21 19:51:39 packer: 2017/02/21 19:51:39 [DEBUG] TCP connection to 
>>>>> SSH ip/port failed: dial tcp 34.251.38.229:22: getsockopt: connection 
>>>>> refused
>>>>> 2017/02/21 19:51:44 packer: 2017/02/21 19:51:44 [DEBUG] TCP connection to 
>>>>> SSH ip/port failed: dial tcp 34.251.38.229:22: getsockopt: connection 
>>>>> refused
>>>>> 2017/02/21 19:51:49 packer: 2017/02/21 19:51:49 [INFO] Attempting SSH 
>>>>> connection...
>>>>> 2017/02/21 19:51:49 packer: 2017/02/21 19:51:49 reconnecting to TCP 
>>>>> connection for SSH
>>>>> 2017/02/21 19:51:49 packer: 2017/02/21 19:51:49 handshaking with SSH
>>>>> 2017/02/21 19:51:50 packer: 2017/02/21 19:51:50 handshake error: ssh: 
>>>>> handshake failed: ssh: unable to authenticate, attempted methods 
>>>>> [publickey none], no supported methods remain
>>>>> 2017/02/21 19:51:50 packer: 2017/02/21 19:51:50 [DEBUG] SSH handshake 
>>>>> err: ssh: handshake failed: ssh: unable to authenticate, attempted 
>>>>> methods [publickey none], no supported methods remain
>>>>> 2017/02/21 19:51:50 packer: 2017/02/21 19:51:50 [DEBUG] Detected 
>>>>> authentication error. Increasing handshake attempts.
>>>>> 2017/02/21 19:51:57 packer: 2017/02/21 19:51:57 [INFO] Attempting SSH 
>>>>> connection...
>>>>> 2017/02/21 19:51:57 packer: 2017/02/21 19:51:57 reconnecting to TCP 
>>>>> connection for SSH
>>>>> 2017/02/21 19:51:57 packer: 2017/02/21 19:51:57 handshaking with SSH
>>>>> 2017/02/21 19:51:57 packer: 2017/02/21 19:51:57 handshake error: ssh: 
>>>>> handshake failed: ssh: unable to authenticate, attempted methods [none 
>>>>> publickey], no supported methods remain
>>>>> 2017/02/21 19:51:57 packer: 2017/02/21 19:51:57 [DEBUG] SSH handshake 
>>>>> err: ssh: handshake failed: ssh: unable to authenticate, attempted 
>>>>> methods [none publickey], no supported methods remain
>>>>> 2017/02/21 19:51:57 packer: 2017/02/21 19:51:57 [DEBUG] Detected 
>>>>> authentication error. Increasing handshake attempts.
>>>>>
>>>>>
>>>>> Also, whilst the instance is up, I am able to SSH into it (note that 
>>>>> the IP address is different to the above failed log as it was a different 
>>>>> failed build):
>>>>>
>>>>>
>>>>> ssh [email protected] -i ~/.ssh/server_key.pem
>>>>> The authenticity of host '34.250.136.97 (34.250.136.97)' can't be 
>>>>> established.
>>>>> ECDSA key fingerprint is xxxxxx.
>>>>> Are you sure you want to continue connecting (yes/no)? yes
>>>>> Warning: Permanently added '34.250.136.97' (ECDSA) to the list of known 
>>>>> hosts.
>>>>> Welcome to Ubuntu 16.04.1 LTS (GNU/Linux 4.4.0-62-generic x86_64)
>>>>>
>>>>>  * Documentation:  https://help.ubuntu.com
>>>>>  * Management:     https://landscape.canonical.com
>>>>>  * Support:        https://ubuntu.com/advantage
>>>>>
>>>>>   Get cloud support with Ubuntu Advantage Cloud Guest:
>>>>>     http://www.ubuntu.com/business/services/cloud
>>>>>
>>>>> 0 packages can be updated.
>>>>> 0 updates are security updates.
>>>>>
>>>>>
>>>>> Any idea what's going on here or what I could try? 
>>>>>
>>>>> Thanks.
>>>>>
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>>>>
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>>

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