Help Center/ Elastic Load Balance/ API Reference/ APIs (V3)/ Backend Server/ Adding a Backend Server
Updated on 2024-09-26 GMT+08:00
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Adding a Backend Server

Function

This API is used to add a backend server.

Constraints

When you add backend servers, note the following:

  • Two backend servers in the same backend server group must have different IP addresses and ports.

  • If no subnets are specified during cloud server creation, IP as backend servers can be added. In this case, address must be set to an IPv4 address, the protocol of the backend server group must be TCP, HTTP, or HTTPS, and IP as a Backend must have been enabled for the load balancer.

  • If a subnet is specified during cloud server creation, the subnet must be in the same VPC where the load balancer resides.

  • If the backend server group supports IPv4/IPv6 dual stack, address can be an IPv4 address or an IPv6 address. If the backend server group supports only IPv4, address can only be an IPv4 address.

  • If type of the backend server is set to instance, address must be a private IP address that is not used by any load balancer.

Calling Method

For details, see Calling APIs.

URI

POST /v3/{project_id}/elb/pools/{pool_id}/members

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

pool_id

Yes

String

Specifies the ID of the backend server group.

project_id

Yes

String

Specifies the project ID.

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

Specifies the token used for IAM authentication.
Table 3 Request body parameters

Parameter

Mandatory

Type

Description

member

Yes

CreateMemberOption object

Specifies the backend server.
Table 4 CreateMemberOption

Parameter

Mandatory

Type

Description

address

Yes

String

Specifies the private IP address bound to the backend server.

Notes and constraints:

  • If subnet_cidr_id is left blank, IP as a Backend is enabled. In this case, the IP address must be an IPv4 address.

  • If subnet_cidr_id is not left blank, the IP address can be IPv4 or IPv6. It must be in the subnet specified by subnet_cidr_id.

admin_state_up

No

Boolean

Specifies the administrative status of the backend server.

The value can be true or false.

Although this parameter can be used in the APIs for creating and updating backend servers, its actual value depends on whether ECSs exist. If ECSs exist, the value is true. Otherwise, the value is false.

name

No

String

Specifies the backend server name.

Note: The name is not an ECS name. If this parameter is not specified, an empty value will be returned.

project_id

No

String

Specifies the project ID.

protocol_port

No

Integer

Specifies the port used by the backend server to receive requests.

Notes and constraints:

  • This parameter can be left blank because it does not take effect if any_port_enable is set to true for a backend server group.

subnet_cidr_id

No

String

Specifies the ID of the IPv4 or IPv6 subnet where the backend server resides. neutron_subnet_id defines IPv4 subnets, and neutron_network_id defines IPv6 subnets.

You can query parameters neutron_subnet_id and neutron_network_id in the response by calling the API GET

https://{VPC_Endpoint}/v1/{project_id}/subnets to get the IPv4 subnet ID and IPv6 subnet ID respectively.

Notes and constraints:

  • The IPv4 or IPv6 subnet must be in the same VPC as the subnet of the load balancer.

  • If ip_target_enable is set to true, this parameter can be left blank. In this case, IP as backend servers must use private IPv4 addresses, and the protocol of the backend server group must be UDP, TCP, TLS, HTTP, HTTPS, QUIC, or GRPC.

  • If ip_target_enable is set to false, this parameter must be specified.

weight

No

Integer

Specifies the weight of the backend server. Requests are routed to backend servers in the same backend server group based on their weights.

The value ranges from 0 to 100, and the default value is 1. The larger the weight is, the higher proportion of requests the backend server receives. If the weight is set to 0, the backend server will not accept new requests.

If lb_algorithm is set to SOURCE_IP or QUIC_CID, this parameter will not take effect.

Response Parameters

Status code: 201

Table 5 Response body parameters

Parameter

Type

Description

request_id

String

Specifies the request ID.

Note: The value is automatically generated.

member

Member object

Specifies the backend server.
Table 6 Member

Parameter

Type

Description

id

String

Specifies the backend server ID.

NOTE:

The value of this parameter is not the ID of the server but an ID automatically generated for the backend server that has already associated with the load balancer.

name

String

Specifies the backend server name.

Note: The name is not an ECS name.

project_id

String

Specifies the project ID of the backend server.

admin_state_up

Boolean

Specifies the administrative status of the backend server.

The value can be true or false.

Although this parameter can be used in the APIs for creating and updating backend servers, its actual value depends on whether ECSs exist. If ECSs exist, the value is true. Otherwise, the value is false.

subnet_cidr_id

String

Specifies the ID of the IPv4 or IPv6 subnet where the backend server resides. neutron_subnet_id defines IPv4 subnets, and neutron_network_id defines IPv6 subnets.

You can query parameters neutron_subnet_id and neutron_network_id in the response by calling the API GET

https://{VPC_Endpoint}/v1/{project_id}/subnets to get the IPv4 subnet ID and IPv6 subnet ID respectively.

Notes and constraints:

  • The IPv4 or IPv6 subnet must be in the same VPC as the subnet of the load balancer.

  • If ip_target_enable is set to true, this parameter can be left blank. In this case, IP as backend servers must use private IPv4 addresses, and the protocol of the backend server group must be UDP, TCP, TLS, HTTP, HTTPS, QUIC, or GRPC.

  • If ip_target_enable is set to false, this parameter must be specified.

protocol_port

Integer

Specifies the port used by the backend server to receive requests.

Notes and constraints:

  • This parameter can be left blank because it does not take effect if any_port_enable is set to true for a backend server group.

weight

Integer

Specifies the weight of the backend server. Requests are routed to backend servers in the same backend server group based on their weights.

The value ranges from 0 to 100, and the default value is 1. The larger the weight is, the higher proportion of requests the backend server receives. If the weight is set to 0, the backend server will not accept new requests.

If lb_algorithm is set to SOURCE_IP or QUIC_CID, this parameter will not take effect.

address

String

Specifies the private IP address bound to the backend server.

Notes and constraints:

  • If subnet_cidr_id is left blank, IP as a Backend is enabled. In this case, the IP address must be an IPv4 address.

  • If subnet_cidr_id is not left blank, the IP address can be IPv4 or IPv6. It must be in the subnet specified by subnet_cidr_id.

ip_version

String

Specifies the IP version supported by the backend server.

The value can be v4 (IPv4) or v6 (IPv6), depending on the value of address returned by the system.

operating_status

String

Specifies the health status of the backend server if listener_id under status is not specified.

The value can be one of the following:

  • ONLINE: The backend server is running normally.

  • NO_MONITOR: No health check is configured for the backend server group to which the backend server belongs.

  • OFFLINE: The cloud server used as the backend server is stopped or does not exist.

status

Array of MemberStatus objects

Specifies the health status of the backend server if listener_id is specified.

created_at

String

Specifies the time when the forwarding policy was added.

The format is yyyy-MM-dd'T'HH:mm:ss'Z' (UTC time).

This is a new field in this version, and it will not be returned for resources associated with existing dedicated load balancers and for resources associated with existing and new shared load balancers.

updated_at

String

Specifies the time when the forwarding policy was updated.

The format is yyyy-MM-dd'T'HH:mm:ss'Z' (UTC time).

This is a new field in this version, and it will not be returned for resources associated with existing dedicated load balancers and for resources associated with existing and new shared load balancers.

member_type

String

Specifies the type of the backend server.

The value can be:

  • ip: IP as backend servers

  • instance: ECSs used as backend servers

instance_id

String

Specifies the ID of the ECS used as the backend server. If this parameter is left blank, the backend server is not an ECS. For example, it may be an IP address.
Table 7 MemberStatus

Parameter

Type

Description

listener_id

String

Specifies the listener ID.

operating_status

String

Specifies the health status of the backend server if listener_id under status is not specified.

The value can be one of the following:

  • ONLINE: The backend server is running normally.

  • NO_MONITOR: No health check is configured for the backend server group to which the backend server belongs.

  • OFFLINE: The cloud server used as the backend server is stopped or does not exist.

Example Requests

  • Example 1: Adding a backend server

    POST https://{ELB_Endpoint}/v3/99a3fff0d03c428eac3678da6a7d0f24/elb/pools/36ce7086-a496-4666-9064-5ba0e6840c75/members

{
  "member" : {
    "subnet_cidr_id" : "c09f620e-3492-4429-ac15-445d5dd9ca74",
    "protocol_port" : 89,
    "name" : "My member",
    "address" : "120.10.10.16"
  }
}

  • Example 2: Adding an IP address as a backend server

    POST https://{ELB_Endpoint}/v3/99a3fff0d03c428eac3678da6a7d0f24/elb/pools/36ce7086-a496-4666-9064-5ba0e6840c75/members

{
  "member" : {
    "protocol_port" : 89,
    "name" : "My member",
    "address" : "120.10.10.16"
  }
}

  • Example 3: Adding a backend server to an IP backend server group

    POST https://{ELB_Endpoint}/v3/99a3fff0d03c428eac3678da6a7d0f24/elb/pools/36ce7086-a496-4666-9064-5ba0e6840c75/members

{
  "member" : {
    "protocol_port" : 0,
    "name" : "My IP pool member",
    "address" : "120.10.10.16"
  }
}

Example Responses

Status code: 201

Normal response to POST requests.

{
  "member" : {
    "name" : "My member",
    "weight" : 1,
    "admin_state_up" : false,
    "subnet_cidr_id" : "c09f620e-3492-4429-ac15-445d5dd9ca74",
    "project_id" : "99a3fff0d03c428eac3678da6a7d0f24",
    "address" : "120.10.10.16",
    "protocol_port" : 89,
    "id" : "1923923e-fe8a-484f-bdbc-e11559b1f48f",
    "operating_status" : "NO_MONITOR",
    "status" : [ {
      "listener_id" : "427eee03-b569-4d6c-b1f1-712032f7ec2d",
      "operating_status" : "NO_MONITOR"
    } ],
    "ip_version" : "v4"
  },
  "request_id" : "f354090d-41db-41e0-89c6-7a943ec50792"
}

SDK Sample Code

The SDK sample code is as follows.

  • Example 1: Adding a backend server

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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.*;


public class CreateMemberSolution {

    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();
        CreateMemberRequest request = new CreateMemberRequest();
        request.withPoolId("{pool_id}");
        CreateMemberRequestBody body = new CreateMemberRequestBody();
        CreateMemberOption memberbody = new CreateMemberOption();
        memberbody.withAddress("120.10.10.16")
            .withName("My member")
            .withProtocolPort(89)
            .withSubnetCidrId("c09f620e-3492-4429-ac15-445d5dd9ca74");
        body.withMember(memberbody);
        request.withBody(body);
        try {
            CreateMemberResponse response = client.createMember(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());
        }
    }
}

  • Example 2: Adding an IP address as a backend server

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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.*;


public class CreateMemberSolution {

    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();
        CreateMemberRequest request = new CreateMemberRequest();
        request.withPoolId("{pool_id}");
        CreateMemberRequestBody body = new CreateMemberRequestBody();
        CreateMemberOption memberbody = new CreateMemberOption();
        memberbody.withAddress("120.10.10.16")
            .withName("My member")
            .withProtocolPort(89);
        body.withMember(memberbody);
        request.withBody(body);
        try {
            CreateMemberResponse response = client.createMember(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());
        }
    }
}

  • Example 3: Adding a backend server to an IP backend server group

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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.*;


public class CreateMemberSolution {

    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();
        CreateMemberRequest request = new CreateMemberRequest();
        request.withPoolId("{pool_id}");
        CreateMemberRequestBody body = new CreateMemberRequestBody();
        CreateMemberOption memberbody = new CreateMemberOption();
        memberbody.withAddress("120.10.10.16")
            .withName("My IP pool member")
            .withProtocolPort(0);
        body.withMember(memberbody);
        request.withBody(body);
        try {
            CreateMemberResponse response = client.createMember(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());
        }
    }
}

  • Example 1: Adding a backend server

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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 = CreateMemberRequest()
        request.pool_id = "{pool_id}"
        memberbody = CreateMemberOption(
            address="120.10.10.16",
            name="My member",
            protocol_port=89,
            subnet_cidr_id="c09f620e-3492-4429-ac15-445d5dd9ca74"
        )
        request.body = CreateMemberRequestBody(
            member=memberbody
        )
        response = client.create_member(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • Example 2: Adding an IP address as a backend server

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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 = CreateMemberRequest()
        request.pool_id = "{pool_id}"
        memberbody = CreateMemberOption(
            address="120.10.10.16",
            name="My member",
            protocol_port=89
        )
        request.body = CreateMemberRequestBody(
            member=memberbody
        )
        response = client.create_member(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • Example 3: Adding a backend server to an IP backend server group

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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 = CreateMemberRequest()
        request.pool_id = "{pool_id}"
        memberbody = CreateMemberOption(
            address="120.10.10.16",
            name="My IP pool member",
            protocol_port=0
        )
        request.body = CreateMemberRequestBody(
            member=memberbody
        )
        response = client.create_member(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • Example 1: Adding a backend server

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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 := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := elb.NewElbClient(
        elb.ElbClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateMemberRequest{}
	request.PoolId = "{pool_id}"
	nameMember:= "My member"
	protocolPortMember:= int32(89)
	subnetCidrIdMember:= "c09f620e-3492-4429-ac15-445d5dd9ca74"
	memberbody := &model.CreateMemberOption{
		Address: "120.10.10.16",
		Name: &nameMember,
		ProtocolPort: &protocolPortMember,
		SubnetCidrId: &subnetCidrIdMember,
	}
	request.Body = &model.CreateMemberRequestBody{
		Member: memberbody,
	}
	response, err := client.CreateMember(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

  • Example 2: Adding an IP address as a backend server

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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 := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := elb.NewElbClient(
        elb.ElbClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateMemberRequest{}
	request.PoolId = "{pool_id}"
	nameMember:= "My member"
	protocolPortMember:= int32(89)
	memberbody := &model.CreateMemberOption{
		Address: "120.10.10.16",
		Name: &nameMember,
		ProtocolPort: &protocolPortMember,
	}
	request.Body = &model.CreateMemberRequestBody{
		Member: memberbody,
	}
	response, err := client.CreateMember(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

  • Example 3: Adding a backend server to an IP backend server group

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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 := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := elb.NewElbClient(
        elb.ElbClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateMemberRequest{}
	request.PoolId = "{pool_id}"
	nameMember:= "My IP pool member"
	protocolPortMember:= int32(0)
	memberbody := &model.CreateMemberOption{
		Address: "120.10.10.16",
		Name: &nameMember,
		ProtocolPort: &protocolPortMember,
	}
	request.Body = &model.CreateMemberRequestBody{
		Member: memberbody,
	}
	response, err := client.CreateMember(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

201

Normal response to POST requests.

Error Codes

See Error Codes.

Parent Topic: Backend Server