Yes that's the expected and correct behavior.
On Fri, Jan 11, 2019, 06:44 Jack Davidson <[email protected] wrote:
> I'm not sure if I have found a bug or if this is expected behavior. I
> expected the matching public key for the private key I passed to be
> generated and added to my instance automatically, since I saw no mention or
> ways of providing the public key. But it looks like this is not the
> behavior.
>
> The situation is that when I specify 'ssh_private_key_file' in a gcp
> builder like this:
>
> {
> "builders": [
> {
> "type": "googlecompute",
> "project_id": "redacted",
> "source_image": "ubuntu-1604-xenial-v20181204",
> "image_name": "my-packer-image",
> "disk_size": "50",
> "machine_type": "n1-standard-2",
> "communicator": "ssh",
> "ssh_username": "packer_user",
> "ssh_private_key_file": "./id_rsa.pem",
> "network": "packer-network",
> "zone": "us-west1-b",
> "state_timeout" : "15m",
> "instance_name" : "some-instance-name"
> }
> ]
> }
>
> The build fails, after timing out trying to connect over ssh:
> SSH handshake err: ssh: handshake failed: ssh: unable to authenticate,
> attempted methods [none publickey], no supported methods remain
> I can make it succeed by manually adding the public key on instance
> metadata:
>
> {
> "builders": [
> {
> "type": "googlecompute",
> "project_id": "redacted",
> "source_image": "ubuntu-1604-xenial-v20181204",
> "image_name": "my-packer-image",
> "disk_size": "50",
> "machine_type": "n1-standard-2",
> "communicator": "ssh",
> "ssh_username": "packer_user",
> "ssh_private_key_file": "./id_rsa.pem",
> "network": "packer-network",
> "zone": "us-west1-b",
> "state_timeout" : "15m",
> "instance_name" : "some-instance-name",
> "metadata" : {
> "ssh-keys": "packer_user:ssh-rsa [ssh public key data] packer_user"
> }
> }
> ]
> }
>
>
> Is this expected?
>
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