---
title: "Pre-check node rolling restart"
slug: "cdss-rollingrestartprecheck"
updated: 2026-09-17T09:51:28Z
published: 2026-09-17T09:51:28Z
canonical: "api.ncloud-docs.com/cdss-rollingrestartprecheck"
---

> ## 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.

# Pre-check node rolling restart

Available in VPC

Check whether rolling restart is possible for a Cloud Data Streaming Service cluster.

              Caution

              

Rolling restart may cause data loss or intermittent interruptions.

## Request

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

| Method | URI |
| --- | --- |
| POST | /api/v1/cluster/rollingRestartPreCheck (Korea Region) |
| POST | /api/sgn-v1/cluster/rollingRestartPreCheck (Singapore Region) |
| POST | /api/jpn-v1/cluster/rollingRestartPreCheck (Japan Region) |

### Request headers

For information about the headers common to all Cloud Data Streaming Service APIs, see [Cloud Data Streaming Service request headers](/docs/en/analytics-clouddatastreamingservice#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

### Request body

You can include the following data in the body of your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `serviceGroupInstanceNo` | Integer | Required | Cluster instance number - See [Get cluster list](/docs/en/analytics-clouddatastreamingservice-cluster-getclusterinfolist). |

### Request example

The request example is as follows:

```
curl --location --request POST 'https://clouddatastreamingservice.apigw.ntruss.com/api/v1/cluster/rollingRestartPreCheck' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}' \
--header 'Content-Type: application/json' \
--data '{
  "serviceGroupInstanceNo": 1009*****
}'
```

## Response

This section describes the response format.

### Response body

The response body includes the following data:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `code` | Integer | - | Response code |
| `message` | String | - | Response message - Restart available: `SUCCESS` is displayed. - Request syntax error or restart unavailable: Failure cause is displayed. |
| `result` | Boolean | - | Response result - `true` \| `null` - `true`: succeeded - `null`: failed |
| `requestId` | String | - | ID for the request - UUID format |

### Response status codes

For information about the HTTP status codes common to all Cloud Data Streaming Service APIs, see [Cloud Data Streaming Service response status codes](/docs/en/analytics-clouddatastreamingservice#%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:

#### If restart is possible based on check results

The following is a sample response if the restart is available based on the check results.

```
{
    "code": 0,
    "message": "SUCCESS",
    "result": true,
    "requestId": "8f734c6a-****-****-****-656c09f23905"
}
```

#### If restart is not possible based on check results

The following is a sample response if the restart is unavailable based on the check results.

```
{
    "code": 3,
    "message": "Invalid Service Group Instance No",
    "result": null,
    "requestId": "5e6de965-****-****-****-5e88ad379d45"
}
```