HTTP Address passed to Powershell Provisioner

[Aaron K]

I want to take the HTTP address that packer creates and pass that to Powershell for downloading a file (Invoke-WebRequest cmdlet).

How do I do it?

I've tried all different combinations of:

{

  "variables": {

    "http_addr": "{{ env `PACKER_HTTP_ADDR` }}"

  },

  "builders": [

    {

      "type": "vmware-iso",

      "vmx_data": {

        "tools.upgrade.policy": "manual",

        "virtualhw.productcompatibility" : "hosted",

        "vcpu.hotadd": "TRUE",

        "mem.hotadd": "TRUE",

        "tools.syncTime": "FALSE",

        "gui.applyHostDisplayScalingToGuest": "FALSE"

      },

      "guest_os_type": "windows9srv-64",

      "iso_urls": [

        "C:\\ISOs\\en_windows_server_2016_vl_x64_dvd_11636701.iso",

        "ISOs/en_windows_server_2016_vl_x64_dvd_11636701.iso"

      ],

      "iso_checksum": "186F55D26F4E9B60F8616B5485080A30BABA6F82",

      "iso_checksum_type": "sha1",

      "vm_name": "Windows2016",

      "vmdk_name": "Windows2016",

      "headless": "true",

      "skip_compaction": "true",

      "communicator": "winrm",

      "winrm_username": "Administrator",

      "winrm_password": "MYPASSWORDHERE",

      "winrm_port": "5985",

      "winrm_use_ssl": "false",

      "winrm_timeout": "5h",

      "winrm_insecure": "true",

      "shutdown_command": "C:/Windows/Temp/packershutdown.bat",

      "shutdown_timeout": "15m",

      "network_adapter_type": "vmxnet3",

      "disk_adapter_type": "pvscsi",

      "disk_type_id": "0",

      "disk_size": "66560",

      "disk_additional_size": "30720",

      "http_directory": "installs/",

      "http_port_min": "8000",

      "http_port_max": "8000",

      "cpus": "2",

      "memory": "4096",

      "version": "11",

      "vmx_remove_ethernet_interfaces": "true",

      "vmx_data_post": {

        "virtualhw.productcompatibility": "",

        "nvram": ""

      },

      "floppy_files": [

        "answer_files/2016/Autounattend.xml",

        "drivers/pvscsi",

        "drivers/vmxnet3",

        "scripts/enable-winrm.ps1"

      ]

    }

  ],

  "provisioners": [

    {

      "type": "powershell",

      "elevated_user": "Administrator",

      "elevated_password": "MYPASSWORDHERE",

      "inline": [

        "if (!(test-path C:\\Utilities\\)) {mkdir C:\\Utilities\\}"

      ]

    },

    {

      "environment_vars": [

        "http_addr={{ user `http_addr` }}"

      ],

      "type": "powershell",

      "elevated_user": "Administrator",

      "elevated_password": "MYPASSWORDHERE",

      "inline": [

        "Invoke-WebRequest $Env:http_addr/MyUtil.exe -OutFile C:\\Utilities\\MyUtil.exe"

      ]

    }

  ]

}

[Megan Marsh]

Packer automatically sets the env var PACKER_HTTP_ADDR as an environment variable when calling the Powershell provisioner, so you don't need to do what you're doing with the `environment_vars` in the powershell provisioner.  Just access it like this:

```

{

      "type": "powershell",

      "elevated_user": "Administrator",

      "elevated_password": "MYPASSWORDHERE",

      "inline": [

        "Invoke-WebRequest $Env:PACKER_HTTP_ADDR/MyUtil.exe -OutFile C:\\Utilities\\MyUtil.exe"

      ]

    }

```