---
title: "createCloudPostgresqlReadReplicaInstance"
slug: "database-vpostgresql-createcloudpostgresqlreadreplicainstance"
tags: ["Cloud DB for PostgreSQL"]
updated: 2026-09-17T10:05:51Z
published: 2026-09-17T10:05:51Z
canonical: "api.ncloud-docs.com/database-vpostgresql-createcloudpostgresqlreadreplicainstance"
---

> ## 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.

# createCloudPostgresqlReadReplicaInstance

Available in VPC

Create a read replica server instance to a Cloud DB for PostgreSQL instance.

## Request

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

| Method | URI |
| --- | --- |
| GET \| POST | /vpostgresql/v2/createCloudPostgresqlReadReplicaInstance |

Note

This guide is based on the GET method. POST method call tests can be performed through Swagger in the API Gateway service of the NAVER Cloud Platform console.

### Request headers

For information about the headers common to all Cloud DB for PostgreSQL (VPC) APIs, see [Cloud DB for PostgreSQL (VPC) request headers](/docs/en/database-vpostgresql#%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 |
| --- | --- | --- | --- |
| `regionCode` | String | Optional | Region code - Region code of the Cloud DB for PostgreSQL instance for which you want to create a read replica server instance - Check through [getRegionList](/docs/en/compute-vserver-server-common-getregionlist) - First Region of the `getRegionList` query result (default) |
| `cloudPostgresqlInstanceNo` | String | Required | Cloud DB for PostgreSQL instance number - Check through [getCloudPostgresqlInstanceList](/docs/en/database-vpostgresql-getcloudpostgresqlinstancelist) |
| `subnetNo` | String | Conditional | Subnet number of the default network interface to be used in the Cloud DB for PostgreSQL instance - Check through [getCloudPostgresqlTargetSubnetList](/docs/en/database-vpostgresql-getcloudpostgresqltargetsubnetlist) - Required for a Cloud DB for PostgreSQL instance configured with multi-zone (`isMultiZone=true`) - For a Cloud DB for PostgreSQL instance whose multi-zone is not configured (`isMultiZone=false`), the `subnetNo` entry is ignored and it is created in the existing subnetNo - Subnet migrations are not available after creating the Cloud DB for PostgreSQL read replica instance |
| `responseFormatType` | String | Optional | Format of the response result - `xml` (default) \| `json` |

### Request example

The following is a sample request.

```
curl --location --request GET 'https://ncloud.apigw.ntruss.com/vpostgresql/v2/createCloudPostgresqlReadReplicaInstance
?regionCode=KR
&cloudPostgresqlInstanceNo=****925
&subnetNo=****51' \
--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 [CloudPostgresqlInstanceList](/docs/en/common-vapidatatype-cloudpostgresqlinstancelist) for the response body.

### Response status codes

For information about the HTTP status codes common to all Cloud DB for PostgreSQL (VPC) APIs, see [Cloud DB for PostgreSQL (VPC) response status codes](/docs/en/database-vpostgresql#%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.

- If `responseFormatType=json`

```
{
    "createCloudPostgresqlReadReplicaInstanceResponse": {
        "totalRows": 1,
        "cloudPostgresqlInstanceList": [
            {
                "cloudPostgresqlInstanceNo": "****925",
                "cloudPostgresqlServiceName": "test-****",
                "cloudPostgresqlInstanceStatusName": "running",
                "cloudPostgresqlInstanceStatus": {
                    "code": "CREAT",
                    "codeName": "CLOUD DATABASE(VPC) Created State"
                },
                "cloudPostgresqlInstanceOperation": {
                    "code": "NULL",
                    "codeName": "CLOUD DATABASE(VPC) Null OP"
                },
                "cloudPostgresqlImageProductCode": "SW.VPGSL.OS.LNX64.CNTOS.0708.PGSQL.133.B050",
                "engineVersion": "PostgreSQL 13.3",
                "generationCode": "G2",
                "license": "PostgreSQL License",
                "cloudPostgresqlPort": 15432,
                "isHa": true,
                "isMultiZone": true,
                "isBackup": true,
                "backupFileRetentionPeriod": 10,
                "backupTime": "02:00",
                "createDate": "2024-06-03T10:47:11+0900",
                "accessControlGroupNoList": [
                    "180946"
                ],
                "cloudPostgresqlConfigList": [
                    "sample_config=sample_value"
                ],
                "cloudPostgresqlServerInstanceList": [
                    {
                        "cloudPostgresqlServerInstanceNo": "****926",
                        "cloudPostgresqlServerName": "test-****-001-523a",
                        "cloudPostgresqlServerRole": {
                            "code": "M",
                            "codeName": "Primary"
                        },
                        "cloudPostgresqlServerInstanceStatusName": "running",
                        "cloudPostgresqlServerInstanceStatus": {
                            "code": "RUN",
                            "codeName": "CLOUD DATABASE(VPC) Server Running State"
                        },
                        "cloudPostgresqlServerInstanceOperation": {
                            "code": "NOOP",
                            "codeName": "CLOUD DATABASE(VPC) Server Null OP"
                        },
                        "cloudPostgresqlProductCode": "SVR.VPGSL.DBSVR.STAND.C002.M008.NET.SSD.B050.G002",
                        "regionCode": "KR",
                        "zoneCode": "KR-1",
                        "vpcNo": "****87",
                        "subnetNo": "****49",
                        "isPublicSubnet": true,
                        "privateDomain": "pg-****.vpc-cdb-kr.ntruss.com",
                        "privateIp": "***.***.***.***",
                        "dataStorageType": {
                            "code": "SSD",
                            "codeName": "SSD"
                        },
                        "isStorageEncryption": true,
                        "dataStorageSize": 10737418240,
                        "usedDataStorageSize": 142819911,
                        "cpuCount": 2,
                        "memorySize": 8589934592,
                        "uptime": "2024-06-03T10:54:38+0900",
                        "createDate": "2024-06-03T10:47:11+0900"
                    },
                    {
                        "cloudPostgresqlServerInstanceNo": "****932",
                        "cloudPostgresqlServerName": "test-****-002-523b",
                        "cloudPostgresqlServerRole": {
                            "code": "H",
                            "codeName": "Secondary"
                        },
                        "cloudPostgresqlServerInstanceStatusName": "running",
                        "cloudPostgresqlServerInstanceStatus": {
                            "code": "RUN",
                            "codeName": "CLOUD DATABASE(VPC) Server Running State"
                        },
                        "cloudPostgresqlServerInstanceOperation": {
                            "code": "NOOP",
                            "codeName": "CLOUD DATABASE(VPC) Server Null OP"
                        },
                        "cloudPostgresqlProductCode": "SVR.VPGSL.DBSVR.STAND.C002.M008.NET.SSD.B050.G002",
                        "regionCode": "KR",
                        "zoneCode": "KR-2",
                        "vpcNo": "****87",
                        "subnetNo": "****51",
                        "isPublicSubnet": true,
                        "privateDomain": "pg-****.vpc-cdb-kr.ntruss.com",
                        "privateIp": "***.***.***.***",
                        "dataStorageType": {
                            "code": "SSD",
                            "codeName": "SSD"
                        },
                        "isStorageEncryption": true,
                        "dataStorageSize": 10737418240,
                        "usedDataStorageSize": 92188723,
                        "cpuCount": 2,
                        "memorySize": 8589934592,
                        "uptime": "2024-06-03T10:54:38+0900",
                        "createDate": "2024-06-03T10:47:11+0900"
                    },
                    {
                        "cloudPostgresqlServerName": "test-****-003-5257",
                        "cloudPostgresqlServerRole": {
                            "code": "S",
                            "codeName": "Read Replica"
                        },
                        "cloudPostgresqlServerInstanceStatusName": "creating",
                        "cloudPostgresqlServerInstanceStatus": {
                            "code": "PEND",
                            "codeName": "CLOUD DATABASE(VPC) Server Pending State"
                        },
                        "cloudPostgresqlServerInstanceOperation": {
                            "code": "CREAT",
                            "codeName": "CLOUD DATABASE(VPC) Server Create OP"
                        },
                        "cloudPostgresqlProductCode": "SVR.VPGSL.DBSVR.STAND.C002.M008.NET.SSD.B050.G002",
                        "regionCode": "KR",
                        "zoneCode": "KR-2",
                        "vpcNo": "****87",
                        "subnetNo": "****51",
                        "isPublicSubnet": true,
                        "privateIp": "***.***.***.***",
                        "dataStorageType": {
                            "code": "SSD",
                            "codeName": "SSD"
                        },
                        "isStorageEncryption": true,
                        "dataStorageSize": 10737418240,
                        "cpuCount": 2,
                        "memorySize": 8589934592,
                        "createDate": "2024-06-03T13:32:57+0900"
                    }
                ]
            }
        ],
        "requestId": "435bac03-****-****-****-2f5f39f3245e",
        "returnCode": "0",
        "returnMessage": "success"
    }
}
```

- If `responseFormatType=xml` (default)

```
<?xml version="1.0" encoding="UTF-8"?>
<createCloudPostgresqlReadReplicaInstanceResponse>
    <requestId>435bac03-****-****-****-2f5f39f3245e</requestId>
    <returnCode>0</returnCode>
    <returnMessage>success</returnMessage>
    <totalRows>1</totalRows>
    <cloudPostgresqlInstanceList>
        <cloudPostgresqlInstance>
            <cloudPostgresqlInstanceNo>****925</cloudPostgresqlInstanceNo>
            <cloudPostgresqlServiceName>test-****</cloudPostgresqlServiceName>
            <cloudPostgresqlInstanceStatusName>running</cloudPostgresqlInstanceStatusName>
            <cloudPostgresqlInstanceStatus>
                <code>CREAT</code>
                <codeName>CLOUD DATABASE(VPC) Created State</codeName>
            </cloudPostgresqlInstanceStatus>
            <cloudPostgresqlInstanceOperation>
                <code>NULL</code>
                <codeName>CLOUD DATABASE(VPC) Null OP</codeName>
            </cloudPostgresqlInstanceOperation>
            <cloudPostgresqlImageProductCode>SW.VPGSL.OS.LNX64.CNTOS.0708.PGSQL.133.B050</cloudPostgresqlImageProductCode>
            <engineVersion>PostgreSQL 13.3</engineVersion>
            <generationCode>G2</generationCode>
            <license>PostgreSQL License</license>
            <cloudPostgresqlPort>15432</cloudPostgresqlPort>
            <isHa>true</isHa>
            <isMultiZone>true</isMultiZone>
            <isBackup>true</isBackup>
            <backupFileRetentionPeriod>10</backupFileRetentionPeriod>
            <backupTime>02:00</backupTime>
            <createDate>2024-06-03T10:47:11+0900</createDate>
            <accessControlGroupNoList>
                <accessControlGroupNo>****48</accessControlGroupNo>
            </accessControlGroupNoList>
            <cloudPostgresqlConfigList>
                <cloudPostgresqlConfig>sample_config=sample_value</cloudPostgresqlConfig>
            </cloudPostgresqlConfigList>
            <cloudPostgresqlServerInstanceList>
                <cloudPostgresqlServerInstance>
                    <cloudPostgresqlServerInstanceNo>****926</cloudPostgresqlServerInstanceNo>
                    <cloudPostgresqlServerName>test-****-001-523a</cloudPostgresqlServerName>
                    <cloudPostgresqlServerRole>
                        <code>M</code>
                        <codeName>Primary</codeName>
                    </cloudPostgresqlServerRole>
                    <cloudPostgresqlServerInstanceStatusName>running</cloudPostgresqlServerInstanceStatusName>
                    <cloudPostgresqlServerInstanceStatus>
                        <code>RUN</code>
                        <codeName>CLOUD DATABASE(VPC) Server Running State</codeName>
                    </cloudPostgresqlServerInstanceStatus>
                    <cloudPostgresqlServerInstanceOperation>
                        <code>NOOP</code>
                        <codeName>CLOUD DATABASE(VPC) Server Null OP</codeName>
                    </cloudPostgresqlServerInstanceOperation>
                    <cloudPostgresqlProductCode>SVR.VPGSL.DBSVR.STAND.C002.M008.NET.SSD.B050.G002</cloudPostgresqlProductCode>
                    <regionCode>KR</regionCode>
                    <zoneCode>KR-1</zoneCode>
                    <vpcNo>****87</vpcNo>
                    <subnetNo>****49</subnetNo>
                    <isPublicSubnet>true</isPublicSubnet>
                    <privateDomain>pg-****.vpc-cdb-kr.ntruss.com</privateDomain>
                    <privateIp>***.***.***.***</privateIp>
                    <dataStorageType>
                        <code>SSD</code>
                        <codeName>SSD</codeName>
                    </dataStorageType>
                    <isStorageEncryption>true</isStorageEncryption>
                    <dataStorageSize>10737418240</dataStorageSize>
                    <usedDataStorageSize>117703804</usedDataStorageSize>
                    <cpuCount>2</cpuCount>
                    <memorySize>8589934592</memorySize>
                    <uptime>2024-06-03T10:54:38+0900</uptime>
                    <createDate>2024-06-03T10:47:11+0900</createDate>
                </cloudPostgresqlServerInstance>
                <cloudPostgresqlServerInstance>
                    <cloudPostgresqlServerInstanceNo>****932</cloudPostgresqlServerInstanceNo>
                    <cloudPostgresqlServerName>test-****-002-523b</cloudPostgresqlServerName>
                    <cloudPostgresqlServerRole>
                        <code>H</code>
                        <codeName>Secondary</codeName>
                    </cloudPostgresqlServerRole>
                    <cloudPostgresqlServerInstanceStatusName>running</cloudPostgresqlServerInstanceStatusName>
                    <cloudPostgresqlServerInstanceStatus>
                        <code>RUN</code>
                        <codeName>CLOUD DATABASE(VPC) Server Running State</codeName>
                    </cloudPostgresqlServerInstanceStatus>
                    <cloudPostgresqlServerInstanceOperation>
                        <code>NOOP</code>
                        <codeName>CLOUD DATABASE(VPC) Server Null OP</codeName>
                    </cloudPostgresqlServerInstanceOperation>
                    <cloudPostgresqlProductCode>SVR.VPGSL.DBSVR.STAND.C002.M008.NET.SSD.B050.G002</cloudPostgresqlProductCode>
                    <regionCode>KR</regionCode>
                    <zoneCode>KR-2</zoneCode>
                    <vpcNo>****87</vpcNo>
                    <subnetNo>****51</subnetNo>
                    <isPublicSubnet>true</isPublicSubnet>
                    <privateDomain>pg-****.vpc-cdb-kr.ntruss.com</privateDomain>
                    <privateIp>***.***.***.***</privateIp>
                    <dataStorageType>
                        <code>SSD</code>
                        <codeName>SSD</codeName>
                    </dataStorageType>
                    <isStorageEncryption>true</isStorageEncryption>
                    <dataStorageSize>10737418240</dataStorageSize>
                    <usedDataStorageSize>67226304</usedDataStorageSize>
                    <cpuCount>2</cpuCount>
                    <memorySize>8589934592</memorySize>
                    <uptime>2024-06-03T10:54:56+0900</uptime>
                    <createDate>2024-06-03T10:47:11+0900</createDate>
                </cloudPostgresqlServerInstance>
                <cloudPostgresqlServerInstance>
                    <cloudPostgresqlServerName>test-****-003-5257</cloudPostgresqlServerName>
                    <cloudPostgresqlServerRole>
                        <code>S</code>
                        <codeName>Read Replica</codeName>
                    </cloudPostgresqlServerRole>
                    <cloudPostgresqlServerInstanceStatusName>creating</cloudPostgresqlServerInstanceStatusName>
                    <cloudPostgresqlServerInstanceStatus>
                        <code>PEND</code>
                        <codeName>CLOUD DATABASE(VPC) Server Pending State</codeName>
                    </cloudPostgresqlServerInstanceStatus>
                    <cloudPostgresqlServerInstanceOperation>
                        <code>CREAT</code>
                        <codeName>CLOUD DATABASE(VPC) Server Create OP</codeName>
                    </cloudPostgresqlServerInstanceOperation>
                    <cloudPostgresqlProductCode>SVR.VPGSL.DBSVR.STAND.C002.M008.NET.SSD.B050.G002</cloudPostgresqlProductCode>
                    <regionCode>KR</regionCode>
                    <zoneCode>KR-2</zoneCode>
                    <vpcNo>****87</vpcNo>
                    <subnetNo>****51</subnetNo>
                    <isPublicSubnet>true</isPublicSubnet>
                    <privateIp>***.***.***.***</privateIp>
                    <dataStorageType>
                        <code>SSD</code>
                        <codeName>SSD</codeName>
                    </dataStorageType>
                    <isStorageEncryption>true</isStorageEncryption>
                    <dataStorageSize>10737418240</dataStorageSize>
                    <cpuCount>2</cpuCount>
                    <memorySize>8589934592</memorySize>
                    <createDate>2024-06-03T13:32:57+0900</createDate>
                </cloudPostgresqlServerInstance>
            </cloudPostgresqlServerInstanceList>
        </cloudPostgresqlInstance>
    </cloudPostgresqlInstanceList>
</createCloudPostgresqlReadReplicaInstanceResponse>
```