terraform/d/remote_state.html.md

---
layout: "terraform"
page_title: "Terraform: terraform_remote_state"
sidebar_current: "docs-terraform-datasource-remote-state"
description: |-
  Accesses state meta data from a remote backend.
---

# remote\_state

Retrieves state meta data from a remote backend

## Example Usage

```
data "terraform_remote_state" "vpc" {
    backend = "atlas"
    config {
        name = "hashicorp/vpc-prod"
    }
}

resource "aws_instance" "foo" {
    # ...
    subnet_id = "${data.terraform_remote_state.vpc.subnet_id}"
}
```

## Argument Reference

The following arguments are supported:

* `backend` - (Required) The remote backend to use.
* `config` - (Optional) The configuration of the remote backend.
 * Remote state config docs can be found [here](/docs/backends/types/atlas.html)

## Attributes Reference

The following attributes are exported:

* `backend` - See Argument Reference above.
* `config` - See Argument Reference above.

In addition, each output in the remote state appears as a top level attribute
on the `terraform_remote_state` resource.

## Root Outputs Only

Only the root level outputs from the remote state are accessible. Outputs from modules within the state cannot be accessed. If you want a module output to be accessible via a remote state, you must thread the output through to a root output.

An example is shown below:

```
module "app" {
  source = "..."
}

output "app_value" {
  value = "${module.app.value}"
}
```

In this example, the output `value` from the "app" module is available as "app_value". If this root level output hadn't been created, then a remote state resource wouldn't be able to access the `value` output on the module.