packer-cn/website/source/docs/provisioners/converge.html.md

---
description: |-
    The Converge Packer provisioner uses Converge modules to provision the machine.
layout: docs
page_title: Converge Provisioner
...

# Converge Provisioner

Type: `converge`

The [Converge](http://converge.aster.is) Packer provisioner uses Converge
modules to provision the machine. It uploads module directories to use as
source, or you can use remote modules.

The provisioner can optionally bootstrap the Converge client/server binary onto
new images.

## Basic Example

The example below is fully functional.

``` {.javascript}
{
  "type": "converge",
  "module": "https://raw.githubusercontent.com/asteris-llc/converge/master/samples/fileContent.hcl",
  "params": {
    "message": "Hello, Packer!"
  }
}
```

## Configuration Reference

The reference of available configuration options is listed below. The only
required element is "module". Every other option is optional.

- `module` (string) - Path (or URL) to the root module that Converge will apply.

Optional parameters:

- `bootstrap` (boolean) - Set to allow the provisioner to download the latest
  Converge bootstrap script and the specified `version` of Converge from the
  internet.

- `version` (string) - Set to a [released Converge version](https://github.com/asteris-llc/converge/releases) for bootstrap.

- `module_dirs` (array of directory specifications) - Module directories to
  transfer to the remote host for execution. See below for the specification.

- `working_directory` (string) - The directory that Converge will change to
  before execution.

- `params` (maps of string to string) - parameters to pass into the root module.

- `execute_command` (string) - the command used to execute Converge. This has
  various
  [configuration template variables](/docs/templates/configuration-templates.html) available.

### Module Directories

The provisioner can transfer module directories to the remote host for
provisioning. Of these fields, `source` and `destination` are required in every
directory.

- `source` (string) - the path to the folder on the local machine.

- `destination` (string) - the path to the folder on the remote machine. Parent
  directories will not be created; use the shell module to do this.

- `exclude` (array of string) - files and directories to exclude from transfer.

### Execute Command

By default, Packer uses the following command (broken across multiple lines for readability) to execute Converge:

``` {.liquid}
cd {{.WorkingDirectory}} && \
sudo converge apply \
  --local \
  --log-level=WARNING \
  --paramsJSON '{{.ParamsJSON}}' \
  {{.Module}}
```

This command can be customized using the `execute_command` configuration. As you
can see from the default value above, the value of this configuration can
contain various template variables:

- `WorkingDirectory` - `directory` from the configuration
- `ParamsJSON` - The unquoted JSONified form of `params` from the configuration.
- `Module` - `module` from the configuration.