github.com/ratanraj/packer@v1.3.2/website/source/docs/builders/null.html.md (about)

     1  ---
     2  description: |
     3      The null Packer builder is not really a builder, it just sets up an SSH
     4      connection and runs the provisioners. It can be used to debug provisioners
     5      without incurring high wait times. It does not create any kind of image or
     6      artifact.
     7  layout: docs
     8  page_title: 'Null - Builders'
     9  sidebar_current: 'docs-builders-null'
    10  ---
    11  
    12  # Null Builder
    13  
    14  Type: `null`
    15  
    16  The `null` Packer builder is not really a builder, it just sets up an SSH
    17  connection and runs the provisioners. It can be used to debug provisioners
    18  without incurring high wait times. It does not create any kind of image or
    19  artifact.
    20  
    21  ## Basic Example
    22  
    23  Below is a fully functioning example. It doesn't do anything useful, since no
    24  provisioners are defined, but it will connect to the specified host via ssh.
    25  
    26  ``` json
    27  {
    28    "type":         "null",
    29    "ssh_host":     "127.0.0.1",
    30    "ssh_username": "foo",
    31    "ssh_password": "bar"
    32  }
    33  ```
    34  
    35  ## Configuration Reference
    36  
    37  The null builder has no configuration parameters other than the
    38  [communicator](/docs/templates/communicator.html) settings.