---
title: "Upgrade cluster version"
slug: "nks-upgrade"
updated: 2026-09-17T10:05:54Z
published: 2026-09-17T10:05:54Z
canonical: "api.ncloud-docs.com/nks-upgrade"
---

> ## 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.

# Upgrade cluster version

Available in VPC

Upgrade Kubernetes on a specific cluster to a new version.

## Requests

The following describes the request format for the endpoint. The request format is as follows.

| Method | URI |
| --- | --- |
| PATCH | /vnks/v2/clusters/{uuid}/upgrade (Korea Region) |
| PATCH | /vnks/sgn-v2/clusters/{uuid}/upgrade (Singapore Region) |
| PATCH | /vnks/jpn-v2/clusters/{uuid}/upgrade (Japan Region) |

### Request headers

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

### Request path parameters

You can use the following path parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `uuid` | String | Required | Cluster's UUID - See [View cluster list](/docs/en/nks-getclusterlist) |

### Request query parameters

You can use the following query parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `k8sVersion` | String | Required | - See [View cluster](/docs/en/nks-getcluster) |
| `maxSurge` | Integer | Optional |  |
| `maxUnavailable` | Integer | Optional |  |

### Request example

The following is a sample request.

```
curl --location --request PATCH 'https://nks.apigw.ntruss.com/vnks/v2/clusters/00000a09-ce1e-475c-99e5-da1f03200000/upgrade?k8sVersion=1.27.9-nks.1&maxSurge=100&maxUnavailable=100' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Sub Account Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}'
```

## Responses

The following describes the response format.

### Response body

The following describes the response body.

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `uuid` | String | - | UUID of the cluster |

### Response status codes

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

### Response example

The following is a sample response.

```
{
    "uuid": "00000a09-ce1e-475c-99e5-da1f03200000"
}
```