---
title: "Add cluster subnet"
slug: "nks-addsubnet"
updated: 2026-09-17T10:05:54Z
published: 2026-09-17T10:05:54Z
canonical: "api.ncloud-docs.com/nks-addsubnet"
---

> ## 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.

# Add cluster subnet

Available in VPC

Add subnets to improve the network organization of the cluster and make it easier to manage securely.

Note

Up to 5 subnets can be set up.

## Requests

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

| Method | URI |
| --- | --- |
| PATCH | /vnks/v2/clusters/{uuid}/add-subnet (Korea Region) |
| PATCH | /vnks/sgn-v2/clusters/{uuid}/add-subnet (Singapore Region) |
| PATCH | /vnks/jpn-v2/clusters/{uuid}/add-subnet (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 syntax

The request syntax is as follows.

```
{
  "subnets": [
    {
      "number": "Integer"
    }
  ]
}
```

### Request body

The following describes the request body.

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `subnets[]` | Array | Required | List of subnets to add |
| `subnets[].number` | Integer | Required | IDs of subnets to add - See the [getSubnetList](/docs/en/networking-vpc-subnetmanagement-getsubnetlist) action |

### Request example

The following is a sample request.

```
curl --location --request PATCH 'https://nks.apigw.ntruss.com/vnks/v2/clusters/0000a20e-e0fb-4dc9-af1b-97fd3f8d0000/add-subnet' \
--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}' \
--data '{
    "subnets": [
        {
            "number": 140000
        }
    ]
}'
```

## 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": "0000a20e-e0fb-4dc9-af1b-97fd3f8d0000"
}
```