---
title: "changeLoadBalancedServerInstances"
slug: "networking-loadbalancing-changeloadbalancedserverinstances"
updated: 2026-09-17T09:16:52Z
published: 2026-09-17T09:16:52Z
canonical: "api.ncloud-docs.com/networking-loadbalancing-changeloadbalancedserverinstances"
---

> ## 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.

# changeLoadBalancedServerInstances

Classic 환경에서 이용 가능합니다.

로드 밸런서에 바인드된 서버 인스턴스를 변경합니다. 기존에 바인드된 정보는 초기화되고 새롭게 바인드됩니다.

## 요청

요청 형식을 설명합니다. 요청 형식은 다음과 같습니다.

| 메서드 | URI |
| --- | --- |
| GET | /loadbalancer/v2/changeLoadBalancedServerInstances |

### 요청 헤더

Load Balancer API에서 공통으로 사용하는 헤더에 대한 정보는 [Load Balancer 요청 헤더](/docs/networking-loadbalancing#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94)를 참조해 주십시오.

### 요청 쿼리 파라미터

요청 쿼리 파라미터에 대한 설명은 다음과 같습니다.

| 필드 | 타입 | 필수 여부 | 설명 |
| --- | --- | --- | --- |
| `loadBalancerInstanceNo` | String | Required | 바인드된 설정을 변경하려는 로드 밸런서 인스턴스의 번호 |
| `serverInstanceNoList.N` | List[String] | Required | 로드 밸런서에 바인드할 서버 인스턴스의 번호 목록 - <예시> serverInstanceNoList.1=123&serverInstanceNoList.2=124 |

### 요청 예시

요청 예시는 다음과 같습니다.

```
curl --location 'https://ncloud.apigw.ntruss.com/loadbalancer/v2/changeLoadBalancedServerInstances?loadBalancerInstanceNo=*******&serverInstanceNoList.1=*******' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}'
```

## 응답

응답 형식을 설명합니다.

### 응답 바디

응답 바디는 [LoadBalancerInstance](/docs/common-apidatatype-loadbalancerinstance)를 참조해 주십시오.

### 응답 상태 코드

Load Balancer API에서 공통으로 사용하는 응답 상태 코드에 대한 정보는 [Load Balancer 응답 상태 코드](/docs/networking-loadbalancing#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C)를 참조해 주십시오.

### 응답 예시

응답 예시는 다음과 같습니다.

```
<changeLoadBalancedServerInstancesResponse>
    <requestId>d6e80b53-658a-4adc-9683-83be3675d508</requestId>
    <returnCode>0</returnCode>
    <returnMessage>success</returnMessage>
    <totalRows>1</totalRows>
    <loadBalancerInstanceList>
        <loadBalancerInstance>
            <loadBalancerInstanceNo>********</loadBalancerInstanceNo>
            <virtualIp>***.***.***.***,**.***.***.***</virtualIp>
            <loadBalancerName>YOUR_LOAD_BALANCER</loadBalancerName>
            <loadBalancerAlgorithmType>
                <code>RR</code>
                <codeName>Round Robin</codeName>
            </loadBalancerAlgorithmType>
            <loadBalancerDescription></loadBalancerDescription>
            <createDate>2024-06-07T19:28:24+0900</createDate>
            <domainName>***.com</domainName>
            <loadBalancerInstanceStatusName>changing</loadBalancerInstanceStatusName>
            <loadBalancerInstanceStatus>
                <code>USED</code>
                <codeName>NET USED state</codeName>
            </loadBalancerInstanceStatus>
            <loadBalancerInstanceOperation>
                <code>CHANG</code>
                <codeName>NET CHANGE OP</codeName>
            </loadBalancerInstanceOperation>
            <networkUsageType>
                <code>PBLIP</code>
                <codeName>Public</codeName>
            </networkUsageType>
            <isHttpKeepAlive>false</isHttpKeepAlive>
            <connectionTimeout>60</connectionTimeout>
            <certificateName></certificateName>
            <region>
                <regionNo>1</regionNo>
                <regionCode>KR</regionCode>
                <regionName>Korea</regionName>
            </region>
            <zoneList>
                <zone>
                    <zoneNo>2</zoneNo>
                    <zoneName>KR-1</zoneName>
                    <zoneCode>KR-1</zoneCode>
                    <zoneDescription>가산 zone</zoneDescription>
                    <regionNo>1</regionNo>
                </zone>
            </zoneList>
            <loadBalancerRuleList>
                <loadBalancerRule>
                    <protocolType>
                        <code>HTTP</code>
                        <codeName>http</codeName>
                    </protocolType>
                    <loadBalancerPort>80</loadBalancerPort>
                    <serverPort>80</serverPort>
                    <l7HealthCheckPath>/</l7HealthCheckPath>
                    <certificateName></certificateName>
                    <proxyProtocolUseYn>N</proxyProtocolUseYn>
                    <stickySessionUseYn>N</stickySessionUseYn>
                    <http2UseYn>N</http2UseYn>
                </loadBalancerRule>
            </loadBalancerRuleList>
            <loadBalancedServerInstanceList>
                <loadBalancedServerInstance>
                    <serverInstance>
                        <serverInstanceNo>********</serverInstanceNo>
                        <serverName>YOUR_SERVER</serverName>
                        <serverDescription></serverDescription>
                        <cpuCount>2</cpuCount>
                        <memorySize>4294967296</memorySize>
                        <baseBlockStorageSize>53687091200</baseBlockStorageSize>
                        <platformType>
                            <code>UBS64</code>
                            <codeName>Ubuntu Server 64 Bit</codeName>
                        </platformType>
                        <loginKeyName>YOUR_LOGIN_KEY</loginKeyName>
                        <isFeeChargingMonitoring>false</isFeeChargingMonitoring>
                        <publicIp></publicIp>
                        <privateIp>**.**.***.**</privateIp>
                        <serverImageName>ubuntu-18.04</serverImageName>
                        <serverInstanceStatus>
                            <code>RUN</code>
                            <codeName>Server run state</codeName>
                        </serverInstanceStatus>
                        <serverInstanceOperation>
                            <code>NULL</code>
                            <codeName>Server NULL OP</codeName>
                        </serverInstanceOperation>
                        <serverInstanceStatusName>running</serverInstanceStatusName>
                        <createDate>2024-06-07T18:28:59+0900</createDate>
                        <uptime>2024-06-07T18:34:46+0900</uptime>
                        <serverImageProductCode>SPSW0LINUX000130</serverImageProductCode>
                        <serverProductCode>SPSVRSSD00000003</serverProductCode>
                        <isProtectServerTermination>false</isProtectServerTermination>
                        <portForwardingPublicIp>***.**.**.**</portForwardingPublicIp>
                        <zone>
                            <zoneNo>3</zoneNo>
                            <zoneName>KR-2</zoneName>
                            <zoneCode>KR-2</zoneCode>
                            <zoneDescription>평촌 zone</zoneDescription>
                            <regionNo>1</regionNo>
                        </zone>
                        <region>
                            <regionNo>1</regionNo>
                            <regionCode>KR</regionCode>
                            <regionName>Korea</regionName>
                        </region>
                        <baseBlockStorageDiskType>
                            <code>NET</code>
                            <codeName>Network Storage</codeName>
                        </baseBlockStorageDiskType>
                        <baseBlockStorageDiskDetailType>
                            <code>SSD</code>
                            <codeName>SSD</codeName>
                        </baseBlockStorageDiskDetailType>
                        <serverInstanceType>
                            <code>STAND</code>
                            <codeName>Standard</codeName>
                        </serverInstanceType>
                        <userData></userData>
                        <initScriptNo></initScriptNo>
                        <accessControlGroupList>
                            <accessControlGroup>
                                <accessControlGroupConfigurationNo>******</accessControlGroupConfigurationNo>
                                <accessControlGroupName>ncloud-default-acg</accessControlGroupName>
                                <accessControlGroupDescription>Default AccessControlGroup</accessControlGroupDescription>
                                <isDefault>true</isDefault>
                                <createDate>2021-06-22T18:09:57+0900</createDate>
                            </accessControlGroup>
                        </accessControlGroupList>
                        <instanceTagList/>
                    </serverInstance>
                    <serverHealthCheckStatusList>
                        <serverHealthCheckStatus>
                            <protocolType>
                                <code>HTTP</code>
                                <codeName>http</codeName>
                            </protocolType>
                            <loadBalancerPort>80</loadBalancerPort>
                            <serverPort>80</serverPort>
                            <l7HealthCheckPath>/</l7HealthCheckPath>
                            <proxyProtocolUseYn>N</proxyProtocolUseYn>
                            <serverStatus>false</serverStatus>
                        </serverHealthCheckStatus>
                    </serverHealthCheckStatusList>
                </loadBalancedServerInstance>
            </loadBalancedServerInstanceList>
        </loadBalancerInstance>
    </loadBalancerInstanceList>
</changeLoadBalancedServerInstancesResponse>
```