[Yandex Cloud documentation](../../index.md) > [Terraform in Yandex Cloud](../index.md) > Terraform reference > Resources > Cloud DNS > Resources > dns_zone_iam_binding

# yandex_dns_zone_iam_binding (Resource)

Allows creation and management of a single binding within IAM policy for an existing `dns_zone`.

## Example usage

```terraform
//
// Create a new DNS Zone and new IAM Binding for it.
//
resource "yandex_dns_zone" "zone1" {
  name = "my-private-zone"
  zone = "example.com."
}

resource "yandex_dns_zone_iam_binding" "viewer" {
  dns_zone_id = yandex_dns_zone.zone1.id
  role        = "dns.viewer"
  members     = ["userAccount:foo_user_id"]
}
```

## Arguments & Attributes Reference

- `dns_zone_id` (**Required**)(String). The ID of the compute `dns_zone` to attach the policy to.
- `id` (String). The ID of this resource.
- `members` (**Required**)(Set Of String). An array of identities that will be granted the privilege in the `role`. Each entry can have one of the following values:
 * **userAccount:{user_id}**: A unique user ID that represents a specific Yandex account.
 * **serviceAccount:{service_account_id}**: A unique service account ID.
 * **federatedUser:{federated_user_id}**: A unique federated user ID.
 * **federatedUser:{federated_user_id}:**: A unique SAML federation user account ID.
 * **group:{group_id}**: A unique group ID.
 * **system:group:federation:{federation_id}:users**: All users in federation.
 * **system:group:organization:{organization_id}:users**: All users in organization.
 * **system:allAuthenticatedUsers**: All authenticated users.
 * **system:allUsers**: All users, including unauthenticated ones.

{% note warning %}

for more information about system groups, see [Cloud Documentation](../../iam/concepts/access-control/system-group.md).

{% endnote %}



- `role` (**Required**)(String). The role that should be assigned. Only one yandex_dns_zone_iam_binding can be used per role.
- `sleep_after` (Number). For test purposes, to compensate IAM operations delay

## Import

The resource can be imported by using their `resource ID`. For getting it you can use Yandex Cloud [Web Console](https://console.yandex.cloud) or Yandex Cloud [CLI](../../cli/quickstart.md).

```shell
# terraform import yandex_dns_zone_iam_binding.<resource Name> "dns_zone_id,dns.viewer"
terraform import yandex_dns_zone_iam_binding.viewer "dns9m**********tducf,dns.viewer"
```