---
title: "changeFabricClusterServerInstances"
slug: "compute-vserver-fabriccluster-changefabricclusterserverinstances"
updated: 2026-09-17T10:06:00Z
published: 2026-09-17T10:06:00Z
canonical: "api.ncloud-docs.com/compute-vserver-fabriccluster-changefabricclusterserverinstances"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://api.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# changeFabricClusterServerInstances

Available in VPC

Change the list of server instances included in a Fabric cluster. It may take several minutes to tens of minutes for the server list to update.

## Request

This section describes the request format. The method and URI are as follows:

| Method | URI |
| --- | --- |
| GET \| POST | /vserver/v2/changeFabricClusterServerInstances |

              Note

              

This guide is based on the GET method. POST method call tests can be performed through Swagger in the API Gateway service of the NAVER Cloud Platform console.

### Request headers

For information about the headers common to all Server APIs, see [Server request headers](/docs/en/compute-vserver#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

### Request query parameters

You can use the following query parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `regionCode` | String | Optional | Region code - See [getRegionList](/docs/en/compute-vserver-server-common-getregionlist). - First Region in the query results (default). |
| `fabricClusterNo` | String | Required | Fabric cluster number - See [getFabricClusterList](/docs/en/compute-vserver-fabriccluster-getfabricclusterlist). |
| `clusterModeServerInstanceNoList.N` | String | Optional | List of server instance numbers to configure in cluster mode - Only servers created in the Fabric cluster pool configured for the Fabric cluster can be set. - See [getServerInstanceList](/docs/en/compute-vserver-server-getserverinstancelist). - Query existing cluster mode servers: Filter by `fabricClusterNo` and `fabricClusterMode=CLUSTER`. - Query single-mode servers that can be added: Filter by `fabricClusterPoolNo` and `fabricClusterMode=SINGLE`. |
| `responseFormatType` | String | Optional | Format of the response data - `xml` (default) \| `json` |

              Note

              

When entering a request query parameter, see the following:

- This API updates the existing cluster mode settings with the requested list. Therefore, if you want to retain the previously configured server instances, include their instance numbers in the request.
- Requesting `clusterModeServerInstanceNoList` as an empty list or omitting it will disable all existing cluster mode settings.

### Request example

The request example is as follows:

```
curl --location --request GET 'https://ncloud.apigw.ntruss.com/vserver/v2/changeFabricClusterServerInstances
?regionCode=KR
&fabricClusterNo=13**
&clusterModeServerInstanceNoList.1=1**
&clusterModeServerInstanceNoList.2=2**
&responseFormatType=json' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}'
```

## Response

This section describes the response format.

### Response body

The response body includes the following data:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `changeFabricClusterServerInstancesResponse` | Object | - | Response result - See [FabricClusterList](/docs/en/common-vapidatatype-fabricclusterlist). |
| `changeFabricClusterServerInstancesResponse.requestId` | String | - | ID for the request - UUID format |
| `changeFabricClusterServerInstancesResponse.returnCode` | String | - | Response code |
| `changeFabricClusterServerInstancesResponse.returnMessage` | String | - | Response message |

### Response status codes

For information about the HTTP status codes common to all Server APIs, see [Server response status codes](/docs/en/compute-vserver#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C).

### Response example

The response example is as follows:

```
{
  "changeFabricClusterServerInstancesResponse": {
    "totalRows": 1,
    "fabricClusterList": [
      {
        "fabricClusterNo": "13**",
        "fabricClusterName": "test-***",
        "fabricClusterStatus": {
          "code": "SETUP",
          "codeName": "Configuring"
        },
        "fabricClusterDescription": "test",
        "regionCode": "KR",
        "zoneCode": "KR-1",
        "vpcNo": "***84",
        "fabricClusterPoolNo": "***01",
        "fabricClusterPoolName": "test-***",
        "fabricClusterPoolCode": "test-***",
        "createDate": "2025-12-12T13:36:17+0900",
        "fabricClusterServerInstanceList": []
      }
    ],
    "requestId": "8b4841e9-0ca6-4e0e-84ef-054d42de4464",
    "returnCode": "0",
    "returnMessage": "success"
  }
}
```