Help Center/ Elastic Load Balance/ API Reference/ APIs (V3)/ Load Balancer/ Enabling Domain Name Resolution for IP Addresses
Updated on 2026-07-29 GMT+08:00

Enabling Domain Name Resolution for IP Addresses

Function

This API is used to enable domain name resolution for IP addresses.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

  • If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.
  • If you are using identity policy-based authorization, no identity policy-based permission required for calling this API.

URI

POST /v3/{project_id}/elb/loadbalancers/{loadbalancer_id}/dns/ips/batch-enable

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Definition: Specifies the project ID. For details about how to obtain a project ID, see Obtaining a Project ID.

Constraints: N/A

Range: The value can contain a maximum of 32 characters, including digits and lowercase letters.

Default value: N/A

loadbalancer_id

Yes

String

Definition: Specifies the load balancer ID.

Constraints: N/A

Range: N/A

Default value: N/A

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

Definition: Specifies the token used for IAM authentication.

Constraints: N/A

Range: N/A

Default value: N/A

Table 3 Request body parameters

Parameter

Mandatory

Type

Description

ips

Yes

Array of DnsIp objects

Definition: Specifies the IP addresses you want to enable domain name resolution for.

Constraints: N/A

Range: N/A

Default value: N/A

Table 4 DnsIp

Parameter

Mandatory

Type

Description

ip_address

No

String

Definition: Specifies the IP address. It can be an IPv4 or IPv6 address.

Constraints: The IP address must be a private or public IP address of the load balancer.

Range: N/A

Default value: N/A

Response Parameters

Status code: 200

Table 5 Response body parameters

Parameter

Type

Description

ips

Array of DnsIpResponse objects

Definition: Specifies the domain name resolution information of IP addresses bound to a load balancer.

Constraints: If neither public nor private domain name resolution is enabled for the load balancer, an empty list is returned.

Range: N/A

Default value: N/A

request_id

String

Definition: Specifies the request ID.

Range: The value is automatically generated, and can contain characters including digits, lowercase letters, and hyphens (-).

Table 6 DnsIpResponse

Parameter

Type

Description

enable

Boolean

Definition: Specifies whether domain name resolution is enabled for the IP address.

Range:

  • true: Domain name resolution is enabled for the IP address.

  • false: Domain name resolution is disabled for the IP address.

ip_address

String

Definition: Specifies the IP address. It can be an IPv4 or IPv6 address.

Constraints: The IP address must be a private or public IP address of the load balancer.

type

String

Definition: Specifies the IP address type.

Range:

  • vip: private IP address

  • eip: public IP address

domain_name

String

Definition: Specifies the domain name that the IP address is mapped to.

Constraints:

  • If the IP address is a private IP address, the value is a private domain name of the load balancer.

  • If the IP address is a public IP address, the value is a public domain name of the load balancer.

created_at

String

Definition: Specifies the creation time.

Range: N/A

updated_at

String

Definition: Specifies the update time.

Range: N/A

Example Requests

Enabling domain name resolution for IP addresses

POST https://{ELB_Endpoint}/v3/{project_id}/elb/loadbalancers/{loadbalancer_id}/dns/ips/batch-enable

{
  "ips" : [ {
    "ip_address" : "192.168.0.166"
  }, {
    "ip_address" : "100.85.217.129"
  } ]
}

Example Responses

Status code: 200

Successful request.

{
  "ips" : [ {
    "enable" : true,
    "type" : "vip",
    "created_at" : "2026-01-29T07:08:09Z",
    "updated_at" : "2026-01-29T07:08:28Z",
    "ip_address" : "192.168.0.166",
    "domain_name" : "737b61b6-ff56-4112-a14a-c7abaa4e58bf-internal.elb.elb-test"
  }, {
    "enable" : true,
    "type" : "eip",
    "created_at" : "2026-01-29T06:57:26Z",
    "updated_at" : "2026-01-29T06:57:26Z",
    "ip_address" : "100.85.217.129",
    "domain_name" : "737b61b6-ff56-4112-a14a-c7abaa4e58bf.elb.example.com"
  } ],
  "request_id" : "e7324226f3df8dedcd1e6a5a8b93b1bf"
}

SDK Sample Code

The SDK sample code is as follows.

Enabling domain name resolution for IP addresses

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.elb.v3.region.ElbRegion;
import com.huaweicloud.sdk.elb.v3.*;
import com.huaweicloud.sdk.elb.v3.model.*;

import java.util.List;
import java.util.ArrayList;

public class BatchEnableDomainIPsSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        ElbClient client = ElbClient.newBuilder()
                .withCredential(auth)
                .withRegion(ElbRegion.valueOf("<YOUR REGION>"))
                .build();
        BatchEnableDomainIPsRequest request = new BatchEnableDomainIPsRequest();
        request.withLoadbalancerId("{loadbalancer_id}");
        BatchEnableDomainIPsRequestBody body = new BatchEnableDomainIPsRequestBody();
        List<DnsIp> listbodyIps = new ArrayList<>();
        listbodyIps.add(
            new DnsIp()
                .withIpAddress("192.168.0.166")
        );
        listbodyIps.add(
            new DnsIp()
                .withIpAddress("100.85.217.129")
        );
        body.withIps(listbodyIps);
        request.withBody(body);
        try {
            BatchEnableDomainIPsResponse response = client.batchEnableDomainIPs(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

Enabling domain name resolution for IP addresses

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkelb.v3.region.elb_region import ElbRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkelb.v3 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = ElbClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(ElbRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = BatchEnableDomainIPsRequest()
        request.loadbalancer_id = "{loadbalancer_id}"
        listIpsbody = [
            DnsIp(
                ip_address="192.168.0.166"
            ),
            DnsIp(
                ip_address="100.85.217.129"
            )
        ]
        request.body = BatchEnableDomainIPsRequestBody(
            ips=listIpsbody
        )
        response = client.batch_enable_domain_i_ps(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Enabling domain name resolution for IP addresses

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    elb "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/elb/v3"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/elb/v3/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/elb/v3/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth, err := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        SafeBuild()

    if err != nil {
        fmt.Println(err)
        return
    }

    hcClient, err := elb.ElbClientBuilder().
         WithRegion(region.ValueOf("<YOUR REGION>")).
         WithCredential(auth).
         SafeBuild()


    if err != nil {
        fmt.Println(err)
        return
    }

    client := elb.NewElbClient(hcClient)

    request := &model.BatchEnableDomainIpsRequest{}
	request.LoadbalancerId = "{loadbalancer_id}"
	ipAddressIps:= "192.168.0.166"
	ipAddressIps1:= "100.85.217.129"
	var listIpsbody = []model.DnsIp{
        {
            IpAddress: &ipAddressIps,
        },
        {
            IpAddress: &ipAddressIps1,
        },
    }
	request.Body = &model.BatchEnableDomainIPsRequestBody{
		Ips: listIpsbody,
	}
	response, err := client.BatchEnableDomainIPs(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

Successful request.

Error Codes

See Error Codes.