## GET /api/v2/placement-groups/{id}

**Get VPS placement group detail**

Return placement group health and member placement. `placementSet` is the customer-defined A/B/C group.

### Related Endpoints

- `PATCH /api/v2/placement-groups/{id}`: Rename a VPS placement group
- `DELETE /api/v2/placement-groups/{id}`: Delete a VPS placement group
- `GET /api/v2/placement-groups/{id}/status`: Poll VPS placement group status

### Headers

- `Accept`: application/json
- `Authorization`: Bearer YOUR_API_KEY
- Required API scope: `read:vm`

### Parameters

- `id` (path, string, required): Placement group public ID from `GET /api/v2/placement-groups`. Example: `id_01hxa3b4c5d6e7f8g9h0j1k2m3`

### Request Example

```bash
curl -X GET "https://cloud.hostup.se/api/v2/placement-groups/id_01hxa3b4c5d6e7f8g9h0j1k2m3" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Accept: application/json"
```

### Response Schema

- `id` (string, required) Example: `pg_01hxa3b4c5d6e7f8g9h0j1k2m3`
- `name` (string, required) Example: `Production database`
- `policy` (string, required) Example: `spread`
  Allowed values: spread
- `health` (string, required) Example: `ok`
  Allowed values: ok, reconciling, violation
- `needsAttention` (boolean, required) Example: `false`
- `compatibilityKey` (string, required, nullable): Nullable (may be null when not applicable). Example: `pgcmp_9f6a3b2c1d0e8a7b`
- `members` (array<object>, required)
- `members[].vpsId` (string, required) Example: `vps_01hxa3b4c5d6e7f8g9h0j1k2m3`
- `members[].name` (string, required) Example: `db-primary`
- `members[].instanceUrl` (string, required) Example: `/instance/vps_01hxa3b4c5d6e7f8g9h0j1k2m3`
- `members[].placementSet` (string, required) Example: `a`
  Allowed values: a, b, c
- `members[].status` (string, required) Example: `placed`
  Allowed values: placed, migrating, colocated, unknown
- `members[].addedAt` (string, required) Example: `2026-06-28T10:02:00.000Z`
- `actions` (object, required)
- `actions.canResolve` (object, optional)
- `actions.canResolve.allowed` (boolean, required) Example: `false`
- `actions.canResolve.reason` (string, required, nullable): Nullable (may be null when not applicable). Example: `not_needed`
- `createdAt` (string, required) Example: `2026-06-28T10:00:00.000Z`
- `updatedAt` (string, required) Example: `2026-06-28T10:05:00.000Z`

### Responses

#### 200 - Placement group detail.
```json
{
  "id": "pg_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "name": "Production database",
  "policy": "spread",
  "health": "ok",
  "needsAttention": false,
  "compatibilityKey": "pgcmp_9f6a3b2c1d0e8a7b",
  "members": [
    {
      "vpsId": "vps_01hxa3b4c5d6e7f8g9h0j1k2m3",
      "name": "db-primary",
      "instanceUrl": "/instance/vps_01hxa3b4c5d6e7f8g9h0j1k2m3",
      "placementSet": "a",
      "status": "placed",
      "addedAt": "2026-06-28T10:02:00.000Z"
    }
  ],
  "actions": {
    "canRename": {
      "allowed": true,
      "reason": null
    },
    "canDelete": {
      "allowed": true,
      "reason": null
    },
    "canAddMember": {
      "allowed": true,
      "reason": null
    },
    "canResolve": {
      "allowed": false,
      "reason": "not_needed"
    }
  },
  "createdAt": "2026-06-28T10:00:00.000Z",
  "updatedAt": "2026-06-28T10:05:00.000Z"
}
```

#### 400 - Invalid request. The response body is an RFC 7807 Problem Details document.
```json
{
  "type": "https://developer.hostup.se/errors/invalid_request",
  "title": "Invalid request",
  "status": 400,
  "detail": "The request body failed validation.",
  "code": "invalid_request",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z",
  "errors": [
    {
      "pointer": "/items/0/domainName",
      "detail": "`domainName` is required.",
      "code": "invalid_request"
    }
  ]
}
```

#### 401 - Unauthorized. Authentication is required.
```json
{
  "type": "https://developer.hostup.se/errors/unauthorized",
  "title": "Unauthorized",
  "status": 401,
  "detail": "Authentication is required.",
  "code": "unauthorized",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 403 - Forbidden. The caller lacks a required scope or does not own the resource.
```json
{
  "type": "https://developer.hostup.se/errors/forbidden",
  "title": "Forbidden",
  "status": 403,
  "detail": "The caller lacks a required scope or does not own the resource.",
  "code": "forbidden",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 404 - Not found. The resource does not exist or is not owned by the caller.
```json
{
  "type": "https://developer.hostup.se/errors/not_found",
  "title": "Not found",
  "status": 404,
  "detail": "The requested resource could not be found.",
  "code": "not_found",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 429 - Rate limited. Retry after the limit resets. 429 responses include `Retry-After` seconds plus `X-RateLimit-*` headers.
```json
{
  "type": "https://developer.hostup.se/errors/rate_limit_exceeded",
  "title": "Too many requests",
  "status": 429,
  "detail": "Too many requests. Retry after the limit resets.",
  "code": "rate_limit_exceeded",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```

#### 500 - Internal error. Retry later or contact support if the issue persists.
```json
{
  "type": "https://developer.hostup.se/errors/internal_error",
  "title": "Internal server error",
  "status": 500,
  "detail": "An unexpected error occurred. Retry later or contact support if the issue persists.",
  "code": "internal_error",
  "instance": "/api/v2/resource",
  "requestId": "req_01hxa3b4c5d6e7f8g9h0j1k2m3",
  "timestamp": "2026-04-27T12:34:56.000Z"
}
```