更新时间:2026-01-30 GMT+08:00
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查询实例节点 - ShowInstanceNodes

功能介绍

查询实例节点信息。

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,当前API调用无需身份策略权限。

URI

GET /v2/{project_id}/{engine}/instances/{instance_id}/nodes

表1 路径参数

参数

是否必选

参数类型

描述

project_id

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。

engine

String

参数解释

消息引擎类型。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

instance_id

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

响应参数

状态码:200

表2 响应Body参数

参数

参数类型

描述

nodes

Array of NodeContextEntity objects

参数解释

后台任务ID。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

total

Integer

参数解释

总个数。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

表3 NodeContextEntity

参数

参数类型

描述

id

String

参数解释

ID。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

broker_name

String

参数解释

broker名称。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

broker_id

Integer

参数解释

broker的ID。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

address

String

参数解释

地址。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

public_address

String

参数解释

公网地址。

约束限制

不涉及。

取值范围

不涉及。

默认取值

不涉及。

请求示例

GET https://{endpoint}/v2/{project_id}/{engine}/instances/{instance_id}/nodes

响应示例

状态码:200

查询成功。

{
  "total" : 2,
  "nodes" : [ {
    "id" : "node-1",
    "broker_name" : "broker-name-1",
    "broker_id" : "broker-1",
    "address" : "0.0.0.2",
    "public_address" : "1.0.0.2"
  }, {
    "id" : "node-2",
    "broker_name" : "broker-name-2",
    "broker_id" : "broker-2",
    "address" : "0.0.0.1",
    "public_address" : "1.0.0.1"
  } ]
}

SDK代码示例

SDK代码示例如下。

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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.rocketmq.v2.region.RocketMQRegion;
import com.huaweicloud.sdk.rocketmq.v2.*;
import com.huaweicloud.sdk.rocketmq.v2.model.*;


public class ShowInstanceNodesSolution {

    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);

        RocketMQClient client = RocketMQClient.newBuilder()
                .withCredential(auth)
                .withRegion(RocketMQRegion.valueOf("<YOUR REGION>"))
                .build();
        ShowInstanceNodesRequest request = new ShowInstanceNodesRequest();
        request.withEngine("{engine}");
        request.withInstanceId("{instance_id}");
        try {
            ShowInstanceNodesResponse response = client.showInstanceNodes(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());
        }
    }
}
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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkrocketmq.v2.region.rocketmq_region import RocketMQRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkrocketmq.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 = RocketMQClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(RocketMQRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ShowInstanceNodesRequest()
        request.engine = "{engine}"
        request.instance_id = "{instance_id}"
        response = client.show_instance_nodes(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)
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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    rocketmq "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/rocketmq/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 := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := rocketmq.NewRocketMQClient(
        rocketmq.RocketMQClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ShowInstanceNodesRequest{}
	request.Engine = "{engine}"
	request.InstanceId = "{instance_id}"
	response, err := client.ShowInstanceNodes(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

查询成功。

错误码

请参见错误码

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