Unable to run serverspec test on GCP packer instance

[noisy noisyBits]

Hi all,

 

I am struggling to run serverspec test on GCP packer instance from local machine.

I have created a packer json config file as follows to create an image on GCP (provisioners run shell script to create an user account for sftp on packer instance):

{

    "variables": {

        "project": "gcp-project",

        "image_family": "centos-7",

        "username": "centos",

        "sftp_username": "",

        "sftp_password":"",

        "zone": "us-central1-c",

        "version": "latest"

    },

    "builders": [

        {

            "type": "googlecompute",

            "account_file": "account.json",

            "project_id": "{{user `project`}}",

            "zone": "{{user `zone`}}",

            "source_image":"centos-7-v20171025",

            "image_name": "sftp-{{user `image_family`}}-{{user `version`}}-{{timestamp}}",

            "image_family": "{{user `image_family`}}",

            "image_description": "sftp - from packer",

            "ssh_username": "{{user `username`}}",

            "machine_type": "g1-small"

        }

    ],

    "provisioners": [

        {

            "type"  : "shell",

            "inline": [

                "sudo adduser {{user `sftp_username`}}",

                "sudo echo -e '{{user `sftp_password`}}\n{{user `sftp_password`}}\n' | sudo passwd {{user `sftp_username`}}",

                "sudo mkdir -p /var/sftp/upload",

                "sudo chown root:root /var/sftp",

                "sudo chmod 755 /var/sftp",

                "sudo chown {{user `sftp_username`}}:{{user `sftp_username`}} /var/sftp/upload"

            ]

        },

        {

            "type": "shell-local",

            "command": "rake spec TARGET_HOST=remotehost"

        }

    ]

}

and i am executing rake spec TARGET_HOST=(ip of packer instance) to run serverspec test from local machine and spec_helper.rb is configured with ssh login as follows:

host = ENV['TARGET_HOST']

options = Net::SSH::Config.for(host)

options[:user] = 'centos'

set :host, options[:host_name] || host

set :ssh_options, options

and Rakefile is configured to run test from specific folder.

after running packer build command "packer build -var-file=variables.json sftp.json| tee build.log"

it fails with 

Net::SSH::AuthenticationFailed:

Authentication failed for user cen...@35.193.23.13

Details packer build log

==> googlecompute: Checking image does not exist...

==> googlecompute: Creating temporary SSH key for instance...

==> googlecompute: Using image: centos-7-v20171025

==> googlecompute: Creating instance...

    googlecompute: Loading zone: us-central1-c

    googlecompute: Loading machine type: g1-small

    googlecompute: Loading network: default

    googlecompute: Requesting instance creation...

    googlecompute: Waiting for creation operation to complete...

    googlecompute: Instance has been created!

==> googlecompute: Waiting for the instance to become running...

    googlecompute: IP: 1.2.3.4

==> googlecompute: Waiting for SSH to become available...

==> googlecompute: Connected to SSH!

==> googlecompute: Provisioning with shell script: /var/folders/vh/03_qyfy91r757mypx3qcgjfh0000gn/T/packer-shell043898698

    googlecompute: New password: BAD PASSWORD: The password contains the user name in some form

    googlecompute: Changing password for user nifi.

    googlecompute: passwd: all authentication tokens updated successfully.

    googlecompute: Retype new password:

==> googlecompute: Executing local command: rake spec TARGET_HOST=host

    googlecompute:

    googlecompute: An error occurred while loading ./spec/31.2.3.4/sftp_spec.rb.

    googlecompute: On host `1.2.3.4'

    googlecompute: Failure/Error:

    googlecompute:   describe service('sshd'), :if => os[:family] == 'redhat' do

    googlecompute:     it { should be_enabled }

    googlecompute:     it { should be_running }

    googlecompute:   end

    googlecompute: Net::SSH::AuthenticationFailed:

    googlecompute:   Authentication failed for user cen...@35.193.23.13

I am not able to ssh to this temporary packer instance and serverspec test fail to run.

any answer will be appreciated. thanks very much.

Regards
Nirmal

[Rickard von Essen]

See my answer on SO https://stackoverflow.com/a/47301671/226174

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[noisy noisyBits]

Rickard von Essen

Thanks you so much for your help.

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