### Configure Vultr Provider and Create Instance

Source: https://registry.terraform.io/providers/vultr/vultr/latest/docs

This snippet shows how to configure the Vultr provider with API key and rate limits, and includes a basic resource definition for a web instance. Ensure the VULTR_API_KEY environment variable is set or provide the API key directly.

```terraform
terraform {
  required_providers {
    vultr = {
      source = "vultr/vultr"
      version = "2.31.2"
    }
  }
}

# Configure the Vultr Provider
provider "vultr" {
  api_key = "VULTR_API_KEY"
  rate_limit = 100
  retry_limit = 3
}

# Create a web instance
resource "vultr_instance" "web" {
  # ...
}
```

--------------------------------

### Provider Configuration

Source: https://registry.terraform.io/providers/vultr/vultr/latest/docs

This snippet shows how to configure the Vultr provider in your Terraform configuration, including setting the API key and optional rate limiting and retry limits.

```APIDOC
## Provider Configuration

### Description
Configure the Vultr provider with your API key and optional settings for rate limiting and retries.

### Arguments

* `api_key` - (Required) This is the Vultr API key. This can also be specified with the VULTR_API_KEY shell environment variable.
* `rate_limit` - (Optional) Vultr limits API calls to 30 calls per second. This field lets you configure how the rate limit using milliseconds. The default value if this field is omitted is `500 milliseconds` per call.
* `retry_limit` - (Optional) This field lets you configure how many retries should be attempted on a failed call. The default value if this field is omitted is `3` retries.

### Example Usage
```terraform
terraform {
  required_providers {
    vultr = {
      source = "vultr/vultr"
      version = "2.31.2"
    }
  }
}

# Configure the Vultr Provider
provider "vultr" {
  api_key = "VULTR_API_KEY"
  rate_limit = 100
  retry_limit = 3
}
```
```

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