---
layout: "docs"
page_title: "Provisioner: chef"
sidebar_current: "docs-provisioners-chef"
description: |-
  The `chef` provisioner invokes a Chef Client run on a remote resource after first installing and configuring Chef Client on the remote resource. The `chef` provisioner supports both `ssh` and `winrm` type connections.
---

# Chef Provisioner

The `chef` provisioner invokes a Chef Client run on a remote resource after first installing
and configuring Chef Client on the remote resource. The `chef` provisioner supports both `ssh`
and `winrm` type [connections](/docs/provisioners/connection.html).

## Requirements

In order for the `chef` provisioner to work properly, you need either `cURL` (when using
a `ssh` type connection) or `PowerShell 2.0` (when using a `winrm` type connection) to be
available on the target machine.

## Example usage

```
# Start a initial chef run on a resource
resource "aws_instance" "web" {
    ...
    provisioner "chef"  {
        attributes {
            "key" = "value"
            "app" {
                "cluster1" {
                    "nodes" = ["webserver1", "webserver2"]
                }
            }
        }
        environment = "_default"
        run_list = ["cookbook::recipe"]
        node_name = "webserver1"
        server_url = "https://chef.company.com/organizations/org1"
        validation_client_name = "chef-validator"
        validation_key_path = "../chef-validator.pem"
        version = "11.18.6"
    }
}
```

## Argument Reference

The following arguments are supported:

* `attributes (map)` - (Optional) A map with initial node attributes for the new node.
  See example.

* `environment (string)` - (Optional) The Chef environment the new node will be joining
  (defaults `_default`).

* `log_to_file (boolean)` - (Optional) If true, the output of the initial Chef Client run
  will be logged to a local file instead of the console. The file will be created in a
  subdirectory called `logfiles` created in your current directory. The filename will be
  the `node_name` of the new node.

* `http_proxy (string)` - (Optional) The proxy server for Chef Client HTTP connections.

* `https_proxy (string)` - (Optional) The proxy server for Chef Client HTTPS connections.

* `no_proxy (array)` - (Optional) A list of URLs that should bypass the proxy.

* `node_name (string)` - (Required) The name of the node to register with the Chef Server.

* `os_type (string)` - (Optional) The OS type of the node. Valid options are: `linux` and
  `windows`. If not supplied the connection type will be used to determine the OS type (`ssh`
  will asume `linux` and `winrm` will assume `windows`). 

* `prevent_sudo (boolean)` - (Optional) Prevent the use of sudo while installing, configuring
  and running the initial Chef Client run. This option is only used with `ssh` type
  [connections](/docs/provisioners/connection.html).

* `run_list (array)` - (Required) A list with recipes that will be invoked during the initial
  Chef Client run. The run-list will also be saved to the Chef Server after a successful
  initial run.

* `server_url (string)` - (Required) The URL to the Chef server. This includes the path to
  the organization. See the example.

* `skip_install (boolean)` - (Optional) Skip the installation of Chef Client on the remote
  machine. This assumes Chef Client is already installed when you run the `chef`
  provisioner.

* `ssl_verify_mode (string)` - (Optional) Use to set the verify mode for Chef Client HTTPS
  requests.

* `validation_client_name (string)` - (Required) The name of the validation client to use
  for the initial communication with the Chef Server.

* `validation_key_path (string)` - (Required) The path to the validation key that is needed
  by the node to register itself with the Chef Server. The key will be uploaded to the remote
  machine.

* `version (string)` - (Optional) The Chef Client version to install on the remote machine.
  If not set the latest available version will be installed.