Why environment_vars doens't set any values on shell provisioner?

[mak...@hotpads.com]

Hello everyone,

I started using packer recently and so far faced an issue with passing variables while using shell provisioner.

The following example was running on Packer 0.11.0 on Ubuntu16.04 and it was provisioning CentOS 6.7 host.

Here is an example of my code:

  "variables": {
    "aws_access_key": "",
    "aws_secret_key": ""
  }

  "provisioners": [
    {
      "type": "shell",

      "environment_vars":[
        "PACKER_SERVERNAME=packer_test",
        "AWS_ACCESS_KEY_ID={{user `aws_access_key`}}",
        "AWS_SECRET_ACCESS_KEY={{user `aws_secret_key`}}"
      ],

      "inline": [
        "echo AWS_ACCESS_KEY_ID is $AWS_ACCESS_KEY_ID",
        "echo '{{user `aws_access_key`}}' > /tmp/aws_access_key",
        "sudo bash packer_bootstrap.sh"
      ]

    }]

So, here I'm defining environment variables directly for PACKER_SERVERNAME and using hiding method for AWS_ACCESS_KEY.

However upon checking this variable value during the next step in "inline" command - there is nothing in it.

Its output is just like that:

==> amazon-ebs: Provisioning with shell script: /tmp/packer-shell656434894

    amazon-ebs: AWS_ACCESS_KEY_ID is

And /tmp/aws_access_key file is also empty.

Would you please advice what is wrong in that configuration, why variables aren't going through and how to make it working. 

Thank you,

Maxim

[Rickard von Essen]

Can't rely say, this works for me:

{

   "variables" : {

      "aws_access_key" : ""

   },

   "builders": [

     {

       "type": "docker",

       "image": "ubuntu",

       "export_path": "/dev/null"

     }

   ],

   "provisioners" : [

      {

         "type" : "shell",

         "environment_vars" : [

            "AWS_ACCESS_KEY_ID={{user `aws_access_key`}}"

         ],

         "inline" : [

            "echo AWS_ACCESS_KEY_ID is $AWS_ACCESS_KEY_ID",

            "echo '{{user `aws_access_key`}}'"

         ]

      }

   ]

}

$ packer build -var aws_access_key="AIKA" env_var_inline.json

docker output will be in this color.

==> docker: Creating a temporary directory for sharing data...

==> docker: Pulling Docker image: ubuntu

    docker: Using default tag: latest

    docker: latest: Pulling from library/ubuntu

    docker: Digest: sha256:2d44ae143feeb36f4c898d32ed2ab2dffeb3a573d2d8928646dfc9cb7deb1315

    docker: Status: Image is up to date for ubuntu:latest

==> docker: Starting docker container...

    docker: Run command: docker run -v /Users/rickardvonessen/.packer.d/tmp/packer-docker054886684:/packer-files -d -i -t ubuntu /bin/bash

    docker: Container ID: 288baec51ee59c3d1572606c2119ef6143ac97adb9fcfa0fb7dcecb01fcefa11

==> docker: Provisioning with shell script: /var/folders/z6/z83mb59576b4f5ngh_tw6crc0000gp/T/packer-shell921548401

    docker: AWS_ACCESS_KEY_ID is AIKA

    docker: AIKA

==> docker: Exporting the container

==> docker: Killing the container: 288baec51ee59c3d1572606c2119ef6143ac97adb9fcfa0fb7dcecb01fcefa11

Build 'docker' finished.

==> Builds finished. The artifacts of successful builds are:

--> docker: Exported Docker file: /dev/null

Could you try that and post the output when running this if it doesn't work.

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[mak...@hotpads.com]

Thank you for your answer, Rickard!

Upon going through your sample I realized that I didn't call -var-file option while running my script. 

After specifying it in a command line, thanks started working as supposed.

Thank you again!

Maxim

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