# Get a region group

`GET /apis/cra.diagrid.io/v1beta2/regiongroups/{RegionGroupId}`

Get a region group by its unique identifier.

## Request

### Path parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `RegionGroupId` | string | Yes | Unique identifier of the region group. |

## Responses

### 200 — The requested region group.

`application/json`

- `apiVersion` (string)
- `kind` (string)
- `metadata` (object)
  - `name` (string)
  - `uid` (string)
  - `resourceVersion` (integer)
  - `createdAt` (string)
  - `updatedAt` (string)
  - `deletedAt` (string)
  - `labels` (object<string, string>)
  - `annotations` (object)
- `spec` (object)
  - `regions` (string[]) — Required. Regions are the IDs of the member regions. At least two, all of the same type and either all public regions or all regions owned by your organization. A region belongs to at most one group. Whether the members are set up to work as one group is not checked when the group is created. The group's status warns when a member reports a setup the others do not share. Min items: 2.
- `status` (object)
  - `status` (string) — Status is the current processing status of the resource.
  - `updatedAt` (string) — UpdatedAt is the time of the last status update.
  - `messages` (object[]) — Messages contains any status messages, such as error details.
    - `message` (string)
  - `regions` (object[]) — Regions reports each member region, in the order of spec.regions, followed by any region that has been removed from the group but is still draining the placements it held.
    - `region` (string) — Region is the unique identifier of the member region resource.
    - `name` (string) — Name is the region ID.
    - `draining` (boolean) — Draining is whether the region has been removed from the group but still holds group project placements that are being torn down. The region leaves the group once they are gone; the project's data in the other member regions is untouched.
    - `writable` (boolean) — Writable is whether the region's database replica accepts writes. The region whose replica is writable is the active one.

Example:

```json
{
  "apiVersion": "cra.diagrid.io/v1beta2",
  "kind": "RegionGroup",
  "metadata": {
    "name": "eu-pair"
  },
  "spec": {
    "regions": [
      "eu-west-1",
      "eu-central-1"
    ]
  }
}
```

### 404 — The region group was not found.

`application/json`

In the case of an error, a standard format error response body will be returned and the HTTP status code will be set to an error status. The response contains an object with a single error object.

- `code` (string) — Required. This is the same as the HTTP status of the response.
- `message` (string) — Required. A short description of the error.
- `status` (object) — Required. A status code that indicates the error type.
- `details` (object) — Additional details about the errors.
  - `@type` (string) — The type of error.
  - `reason` (string) — A reason for the error.
  - `domain` (string) — The domain in which the error occurred.
  - `metadata` (object) — Additional metadata about the error.

`application/vnd.api+json`

JSONAPI.org specification error response wrapper for UI.

- `error` (object) — In the case of an error, a standard format error response body will be returned and the HTTP status code will be set to an error status. The response contains an object with a single error object.
  - `code` (string) — Required. This is the same as the HTTP status of the response.
  - `message` (string) — Required. A short description of the error.
  - `status` (object) — Required. A status code that indicates the error type.
  - `details` (object) — Additional details about the errors.
    - `@type` (string) — The type of error.
    - `reason` (string) — A reason for the error.
    - `domain` (string) — The domain in which the error occurred.
    - `metadata` (object) — Additional metadata about the error.
- `meta` (object<string, object>) — Link members related to the primary data.
  - One of:
    - **string (uri-reference)** — A string containing the link's URL.
    - **object**
      - `href` (string (uri-reference)) — Required. A string containing the link's URL.
      - `meta` (object) — Non-standard meta-information that can not be represented as an attribute or relationship.
- `links` (object) — Non-standard meta-information that can not be represented as an attribute or relationship.

### default — Unexpected error.

`application/json`

In the case of an error, a standard format error response body will be returned and the HTTP status code will be set to an error status. The response contains an object with a single error object.

- `code` (string) — Required. This is the same as the HTTP status of the response.
- `message` (string) — Required. A short description of the error.
- `status` (object) — Required. A status code that indicates the error type.
- `details` (object) — Additional details about the errors.
  - `@type` (string) — The type of error.
  - `reason` (string) — A reason for the error.
  - `domain` (string) — The domain in which the error occurred.
  - `metadata` (object) — Additional metadata about the error.

`application/vnd.api+json`

JSONAPI.org specification error response wrapper for UI.

- `error` (object) — In the case of an error, a standard format error response body will be returned and the HTTP status code will be set to an error status. The response contains an object with a single error object.
  - `code` (string) — Required. This is the same as the HTTP status of the response.
  - `message` (string) — Required. A short description of the error.
  - `status` (object) — Required. A status code that indicates the error type.
  - `details` (object) — Additional details about the errors.
    - `@type` (string) — The type of error.
    - `reason` (string) — A reason for the error.
    - `domain` (string) — The domain in which the error occurred.
    - `metadata` (object) — Additional metadata about the error.
- `meta` (object<string, object>) — Link members related to the primary data.
  - One of:
    - **string (uri-reference)** — A string containing the link's URL.
    - **object**
      - `href` (string (uri-reference)) — Required. A string containing the link's URL.
      - `meta` (object) — Non-standard meta-information that can not be represented as an attribute or relationship.
- `links` (object) — Non-standard meta-information that can not be represented as an attribute or relationship.