---
title: "createLoadBalancerInstance"
slug: "networking-loadbalancing-createloadbalancerinstance"
updated: 2026-09-17T10:12:30Z
published: 2026-09-17T10:12:30Z
canonical: "api.ncloud-docs.com/networking-loadbalancing-createloadbalancerinstance"
---

> ## 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.

# createLoadBalancerInstance

Available in Classic

Create a load balancer instance.

## Request

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

| Method | URI |
| --- | --- |
| GET | /loadbalancer/v2/createLoadBalancerInstance |

### Request headers

For information about the headers common to all Load Balancer APIs, see [Load Balancer request headers](/docs/en/networking-loadbalancing#%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 |
| --- | --- | --- | --- |
| `loadBalancerName` | String | Optional | Name of the load balancer to create - Granted automatically by NAVER Cloud Platform (default) - 3 to 30 characters |
| `loadBalancerAlgorithmTypeCode` | String | Optional | Type of algorithm to use for load balancing - `RR` (default) \| `SIPHS` \| `LC` - `RR`: Round Robin - `SIPHS`: Source IP Hash - `LC`: Least Connection |
| `loadBalancerDescription` | String | Optional | Load balancer description (byte) - 0 - 1000 |
| `networkUsageTypeCode` | String | Optional | Network type of the load balancer - `PBLIP` (default) \| `PRVT` - `PBLIP` (Public): public IP - `PRVT` (Private): private IP |
| `serverInstanceNoList.N` | String | Optional | List of server instance numbers to bind to the load balancer - See [getLoadBalancancerTargetServerInstanceList](/docs/en/networking-loadbalancing-getloadbalancertargetserverinstancelist) |
| `loadBalancerRuleList.N.protocolTypeCode` | String | Required | Protocol type of the load balancer rule - `HTTP` \| `HTTPS` \| `TCP` \| `SSL` |
| `loadBalancerRuleList.N.loadBalancerPort` | Integer | Required | Port of the load balancer rule - 1 - 65534 - No port duplication on the same load balancer - Ports 22, 3389, 64000, 65130, 65131, and 18080 - 18095 are unavailable since they're for load balancer management |
| `loadBalancerRuleList.N.serverPort` | Integer | Required | Server port of the load balancer rule - 1~65534 - Ports can be duplicated on the same load balancer |
| `loadBalancerRuleList.N.l7HealthCheckPath` | String | Conditional | Health check path of the load balancer rule - `/` (default) - URL path that starts with `/` - Required if `loadBalancerRuleList.N.protocolTypeCode` is `HTTP` or `HTTPS` |
| `loadBalancerRuleList.N.certificateName` | String | Conditional | Load balancer's SSL certificate name Entry is required if `loadBalancerRuleList.N.protocloTypeCode` is `SSL` or `HTTPS` |
| `loadBalancerRuleList.N.proxyProtocolUseYn` | String | Optional | Whether to use proxy protocol - `Y` \| `N` - `Y`: enable - `N`: disable - It can be enabled if `loadBalancerRuleList.N.protocloTypeCode` is `TCP` or `SSL` |
| `loadBalancerRuleList.N.stickySessionUseYn` | String | Optional | Whether to use per-session access - `Y` \| `N` - `Y`: enable - `N`: disable - It can be enabled if `loadBalancerRuleList.N.protocloTypeCode` is `HTTP` or `HTTPS` |
| `loadBalancerRuleList.N.http2UseYn` | String | Optional | Whether to use HTTP/2 protocol - `Y` \| `N` - `Y`: enable - `N`: disable - It can be enabled if `loadBalancerRuleList.N.protocloTypeCode` is `HTTPS` |
| `loadBalancerRuleList.N.serverProtocolTypeCode` | String | Optional | Server's protocol type - `HTTP` (default) \| `HTTPS` - It can be set if `loadBalancerRuleList.N.protocloTypeCode` is `HTTPS`= |
| `regionNo` | String | Optional | Number of the Region in which you want to create the load balancerSee [getRegionList](/docs/en/compute-server-getregionlist)Randomly assigned to a zone in the Korea Region if neither Region nor Zone is entered |
| `zoneNoList` | List[String] | Optional | List of zone numbers for which you want to create the load balancer - Check `zoneNo` through [getRegionList](/docs/en/compute-server-getregionlist) - Private IP load balancers can only select 1 zone, and multi-zone support will be available soon |

### Request example

The following is a sample request.

```
curl --location 'https://ncloud.apigw.ntruss.com/loadbalancer/v2/createLoadBalancerInstance?loadBalancerRuleList.1.l7HealthCheckPath=/&loadBalancerRuleList.1.loadBalancerPort=80&loadBalancerRuleList.1.protocolTypeCode=HTTP&loadBalancerRuleList.1.serverPort=80' \
--header 'x-ncp-apigw-timestamp: {Timestamp}' \
--header 'x-ncp-iam-access-key: {Access Key}' \
--header 'x-ncp-apigw-signature-v2: {API Gateway Signature}'
```

## Response

The following describes the response format.

### Response body

See [LoadBalancerInstance](/docs/en/common-apidatatype-loadbalancerinstance) for the response body.

### Response status codes

For information about the HTTP status codes common to all Load Balancer APIs, see [Load Balancer response status codes](/docs/en/networking-loadbalancing#%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.

```
<createLoadBalancerInstanceResponse>
    <requestId>1e3eac26-c57e-4c8b-b6b0-ba3fe2330a61</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>slb-24784632.ncloudslb.com</domainName>
            <loadBalancerInstanceStatusName>creating</loadBalancerInstanceStatusName>
            <loadBalancerInstanceStatus>
                <code>INIT</code>
                <codeName>NET INIT state</codeName>
            </loadBalancerInstanceStatus>
            <loadBalancerInstanceOperation>
                <code>USE</code>
                <codeName>NET USE 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>Gasan 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/>
        </loadBalancerInstance>
    </loadBalancerInstanceList>
</createLoadBalancerInstanceResponse>
```