文档首页/ 分布式消息服务Kafka版/ API参考/ API V2（推荐）/ 规格变更管理/ 实例扩容 - ResizeKafkaInstance
更新时间：2026-07-23 GMT+08:00
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实例扩容 - ResizeKafkaInstance

功能介绍

实例规格变更。当前通过调用API，只支持按需实例进行实例扩容。

调用方法

请参见如何调用API。

授权信息

账号具备所有API的调用权限，如果使用账号下的IAM用户调用当前API，该IAM用户需具备调用API所需的权限。

  • 如果使用角色与策略授权，具体权限要求请参见权限和授权项。
  • 如果使用身份策略授权，需具备如下身份策略权限。

    授权项

    访问级别

    资源类型（*为必须）

    条件键

    别名

    依赖的授权项

    dms:instance:scale

    Write

    kafka *

    • g:ResourceTag/<tag-key>

    • g:EnterpriseProjectId

    -

    -

URI

POST /v2/{project_id}/kafka/instances/{instance_id}/extend

表1 路径参数

参数

是否必选

参数类型

描述

project_id

是

String

参数解释：

项目ID，获取方式请参见获取项目ID。

约束限制：

不涉及。

取值范围：

不涉及。

默认取值：

不涉及。

instance_id

是

String

参数解释：

实例ID。获取方法如下：调用“查询所有实例列表”接口，从响应体中获取实例ID。

约束限制：

不涉及。

取值范围：

不涉及。

默认取值：

不涉及。

请求参数

表2 请求Body参数

参数

是否必选

参数类型

描述

oper_type

是

String

参数解释：

变更类型。

约束限制：

不涉及。

取值范围：

  • storage：存储空间扩容，代理数量不变。

  • horizontal：代理数量扩容，每个broker的存储空间不变。

  • vertical：垂直扩容，broker的底层虚机规格变更，代理数量和存储空间不变。

默认取值：

不涉及。

new_storage_space

否

Integer

参数解释：

扩容后的存储空间。

约束限制：

磁盘容量仅支持设置为100的整数倍。

实例存储空间 = 代理数量 * 每个broker的存储空间。

当oper_type类型是storage或horizontal时，该参数有效且必填。

  • 当oper_type类型是storage时，代理数量不变，每个broker存储空间最少扩容100GB。

  • 当oper_type类型是horizontal时，每个broker的存储空间不变。

取值范围：

不涉及。

默认取值：

不涉及。

new_broker_num

否

Integer

参数解释：

扩容后的代理数量。

约束限制：

当oper_type参数为horizontal时，该参数有效且必填。

取值范围：

大于扩容前的代理数量，小于50。

默认取值：

不涉及。

new_product_id

否

String

参数解释：

垂直扩容时的新产品ID。产品ID可以从查询产品规格列表获取。

约束限制：

当oper_type参数为vertical时，该参数有效且必填。

取值范围：

不涉及。

默认取值：

不涉及。

publicip_id

否

String

参数解释：

实例绑定的弹性IP地址的ID。获取方法：参考《弹性公网IP API参考》，调用“查询弹性公网IP列表”接口，从响应体中获取弹性公网IP的ID。

以英文逗号隔开多个弹性IP地址的ID。

约束限制：

当实例开启公网访问，且oper_type参数为horizontal时，该参数有效且必填。

取值范围：

不涉及。

默认取值：

不涉及。

tenant_ips

否

Array of strings

参数解释：

指定的内网IP地址。

约束限制：

  • 仅支持指定IPv4。

  • 指定的IP数量只能小于等于新增节点数量。

  • 当指定IP小于节点数量时，未指定的节点随机分配内网IP地址。

取值范围：

不涉及。

默认取值：

不涉及。

second_tenant_subnet_id

否

String

参数解释：

实例扩容时新节点使用备用子网的id。

约束限制：

  • 当实例扩容使用备用子网，则传入此值。

  • 需要联系客服申请开通后，才能传入此值。

取值范围：

不涉及。

默认取值：

不涉及。

响应参数

状态码：200

表3 响应Body参数

参数

参数类型

描述

job_id

String

参数解释：

规格变更任务ID。

取值范围：

不涉及。

请求示例

  • 扩容存储空间（按需实例）。

    POST https://{endpoint}/v2/{project_id}/kafka/instances/{instance_id}/extend

{
  "oper_type" : "storage",
  "new_storage_space" : 600
}

  • 扩容代理数量（按需实例）。

    POST https://{endpoint}/v2/{project_id}/kafka/instances/{instance_id}/extend

{
  "oper_type" : "horizontal",
  "new_storage_space" : 1600,
  "new_broker_num" : 4,
  "tenant_ips" : [ "127.xx.xx.x", "127.xx.xx.x", "127.xx.xx.x" ]
}

  • 扩容代理规格（按需实例）。

    POST https://{endpoint}/v2/{project_id}/kafka/instances/{instance_id}/extend

{
  "oper_type" : "vertical",
  "new_product_id" : "c6.4u8g.cluster"
}

响应示例

状态码：200

实例扩容成功。

{
  "job_id" : "93b94287-728d-4bb1-a158-cb66cb0854e7"
}

SDK代码示例

SDK代码示例如下。

  • 扩容存储空间（按需实例）。

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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.kafka.v2.region.KafkaRegion;
import com.huaweicloud.sdk.kafka.v2.*;
import com.huaweicloud.sdk.kafka.v2.model.*;


public class ResizeKafkaInstanceSolution {

    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);

        KafkaClient client = KafkaClient.newBuilder()
                .withCredential(auth)
                .withRegion(KafkaRegion.valueOf("<YOUR REGION>"))
                .build();
        ResizeKafkaInstanceRequest request = new ResizeKafkaInstanceRequest();
        request.withInstanceId("{instance_id}");
        ResizeEngineInstanceReq body = new ResizeEngineInstanceReq();
        body.withNewStorageSpace(600);
        body.withOperType("storage");
        request.withBody(body);
        try {
            ResizeKafkaInstanceResponse response = client.resizeKafkaInstance(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());
        }
    }
}

  • 扩容代理数量（按需实例）。

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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.kafka.v2.region.KafkaRegion;
import com.huaweicloud.sdk.kafka.v2.*;
import com.huaweicloud.sdk.kafka.v2.model.*;

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

public class ResizeKafkaInstanceSolution {

    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);

        KafkaClient client = KafkaClient.newBuilder()
                .withCredential(auth)
                .withRegion(KafkaRegion.valueOf("<YOUR REGION>"))
                .build();
        ResizeKafkaInstanceRequest request = new ResizeKafkaInstanceRequest();
        request.withInstanceId("{instance_id}");
        ResizeEngineInstanceReq body = new ResizeEngineInstanceReq();
        List<String> listbodyTenantIps = new ArrayList<>();
        listbodyTenantIps.add("127.xx.xx.x");
        listbodyTenantIps.add("127.xx.xx.x");
        listbodyTenantIps.add("127.xx.xx.x");
        body.withTenantIps(listbodyTenantIps);
        body.withNewBrokerNum(4);
        body.withNewStorageSpace(1600);
        body.withOperType("horizontal");
        request.withBody(body);
        try {
            ResizeKafkaInstanceResponse response = client.resizeKafkaInstance(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());
        }
    }
}

  • 扩容代理规格（按需实例）。

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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.kafka.v2.region.KafkaRegion;
import com.huaweicloud.sdk.kafka.v2.*;
import com.huaweicloud.sdk.kafka.v2.model.*;


public class ResizeKafkaInstanceSolution {

    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);

        KafkaClient client = KafkaClient.newBuilder()
                .withCredential(auth)
                .withRegion(KafkaRegion.valueOf("<YOUR REGION>"))
                .build();
        ResizeKafkaInstanceRequest request = new ResizeKafkaInstanceRequest();
        request.withInstanceId("{instance_id}");
        ResizeEngineInstanceReq body = new ResizeEngineInstanceReq();
        body.withNewProductId("c6.4u8g.cluster");
        body.withOperType("vertical");
        request.withBody(body);
        try {
            ResizeKafkaInstanceResponse response = client.resizeKafkaInstance(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());
        }
    }
}

  • 扩容存储空间（按需实例）。

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    # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkkafka.v2.region.kafka_region import KafkaRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkkafka.v2 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 = KafkaClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(KafkaRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ResizeKafkaInstanceRequest()
        request.instance_id = "{instance_id}"
        request.body = ResizeEngineInstanceReq(
            new_storage_space=600,
            oper_type="storage"
        )
        response = client.resize_kafka_instance(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • 扩容代理数量（按需实例）。

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    # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkkafka.v2.region.kafka_region import KafkaRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkkafka.v2 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 = KafkaClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(KafkaRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ResizeKafkaInstanceRequest()
        request.instance_id = "{instance_id}"
        listTenantIpsbody = [
            "127.xx.xx.x",
            "127.xx.xx.x",
            "127.xx.xx.x"
        ]
        request.body = ResizeEngineInstanceReq(
            tenant_ips=listTenantIpsbody,
            new_broker_num=4,
            new_storage_space=1600,
            oper_type="horizontal"
        )
        response = client.resize_kafka_instance(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • 扩容代理规格（按需实例）。

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    # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkkafka.v2.region.kafka_region import KafkaRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkkafka.v2 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 = KafkaClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(KafkaRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ResizeKafkaInstanceRequest()
        request.instance_id = "{instance_id}"
        request.body = ResizeEngineInstanceReq(
            new_product_id="c6.4u8g.cluster",
            oper_type="vertical"
        )
        response = client.resize_kafka_instance(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

  • 扩容存储空间（按需实例）。

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    package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    kafka "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/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 := kafka.KafkaClientBuilder().
         WithRegion(region.ValueOf("<YOUR REGION>")).
         WithCredential(auth).
         SafeBuild()


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

    client := kafka.NewKafkaClient(hcClient)

    request := &model.ResizeKafkaInstanceRequest{}
	request.InstanceId = "{instance_id}"
	newStorageSpaceResizeEngineInstanceReq:= int32(600)
	request.Body = &model.ResizeEngineInstanceReq{
		NewStorageSpace: &newStorageSpaceResizeEngineInstanceReq,
		OperType: "storage",
	}
	response, err := client.ResizeKafkaInstance(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

  • 扩容代理数量（按需实例）。

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    package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    kafka "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/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 := kafka.KafkaClientBuilder().
         WithRegion(region.ValueOf("<YOUR REGION>")).
         WithCredential(auth).
         SafeBuild()


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

    client := kafka.NewKafkaClient(hcClient)

    request := &model.ResizeKafkaInstanceRequest{}
	request.InstanceId = "{instance_id}"
	var listTenantIpsbody = []string{
        "127.xx.xx.x",
	    "127.xx.xx.x",
	    "127.xx.xx.x",
    }
	newBrokerNumResizeEngineInstanceReq:= int32(4)
	newStorageSpaceResizeEngineInstanceReq:= int32(1600)
	request.Body = &model.ResizeEngineInstanceReq{
		TenantIps: &listTenantIpsbody,
		NewBrokerNum: &newBrokerNumResizeEngineInstanceReq,
		NewStorageSpace: &newStorageSpaceResizeEngineInstanceReq,
		OperType: "horizontal",
	}
	response, err := client.ResizeKafkaInstance(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

  • 扩容代理规格（按需实例）。

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    package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    kafka "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kafka/v2/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 := kafka.KafkaClientBuilder().
         WithRegion(region.ValueOf("<YOUR REGION>")).
         WithCredential(auth).
         SafeBuild()


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

    client := kafka.NewKafkaClient(hcClient)

    request := &model.ResizeKafkaInstanceRequest{}
	request.InstanceId = "{instance_id}"
	newProductIdResizeEngineInstanceReq:= "c6.4u8g.cluster"
	request.Body = &model.ResizeEngineInstanceReq{
		NewProductId: &newProductIdResizeEngineInstanceReq,
		OperType: "vertical",
	}
	response, err := client.ResizeKafkaInstance(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

更多编程语言的SDK代码示例，请参见API Explorer的代码示例页签，可生成自动对应的SDK代码示例。

状态码

状态码

描述

200

实例扩容成功。

错误码

请参见错误码。

父主题： 规格变更管理

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