Updated on 2025-08-15 GMT+08:00

Querying Kafka Cluster Metadata

Function

This API is used to query Kafka cluster metadata.

Calling Method

For details, see Calling APIs.

URI

GET /v2/{project_id}/instances/{instance_id}/management/cluster

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Definition:

Project ID. For details, see Obtaining a Project ID.

Constraints:

N/A

Range:

N/A

Default Value:

N/A

instance_id

Yes

String

Definition:

Instance ID. You can call the API for querying all instances to obtain the instance ID. The instance ID is in the response body.

Constraints:

N/A

Range:

N/A

Default Value:

N/A

Request Parameters

None

Response Parameters

Status code: 200

Table 2 Response body parameters

Parameter

Type

Description

cluster

cluster object

Definition:

Cluster basic information.

Table 3 cluster

Parameter

Type

Description

controller

String

Definition:

Controller ID.

Range:

N/A

brokers

Array of brokers objects

Definition:

Node list.

topics_count

Integer

Definition:

Number of topics.

Range:

N/A

partitions_count

Integer

Definition:

Number of partitions.

Range:

N/A

online_partitions_count

Integer

Definition:

Number of online partitions.

Range:

N/A

replicas_count

Integer

Definition:

Number of replicas.

Range:

N/A

isr_replicas_count

Integer

Definition:

Total number of in-sync replicas (ISRs).

Range:

N/A

consumers_count

Integer

Definition:

Number of consumer groups.

Range:

N/A

Table 4 brokers

Parameter

Type

Description

host

String

Definition:

Node IP address.

Range:

N/A

port

Integer

Definition:

Port.

Range:

N/A

broker_id

String

Definition:

Node ID.

Range:

N/A

is_controller

Boolean

Definition:

Whether the broker is a controller.

Range:

  • true: Yes

  • false: No

version

String

Definition:

Server version.

Range:

  • 1.1.0

  • 2.7

  • 3.x

register_time

Long

Definition:

Broker registration time, which is a Unix timestamp.

Range:

N/A

is_health

Boolean

Definition:

Whether Kafka brokers can be connected.

Range:

  • true: Yes

  • false: No

Example Requests

GET https://{endpoint}/v2/{project_id}/instances/{instance_id}/management/cluster

Example Responses

Status code: 200

Kafka cluster metadata is queried successfully.

{
  "cluster" : {
    "controller" : "2",
    "brokers" : [ {
      "host" : "192.168.0.159",
      "port" : 9093,
      "broker_id" : "0",
      "is_controller" : false,
      "version" : "1.1.0",
      "register_time" : 1588754647872,
      "is_health" : true
    }, {
      "host" : "192.168.0.48",
      "port" : 9093,
      "broker_id" : "1",
      "is_controller" : false,
      "version" : "1.1.0",
      "register_time" : 1588754647653,
      "is_health" : true
    }, {
      "host" : "192.168.0.212",
      "port" : 9093,
      "broker_id" : "2",
      "is_controller" : true,
      "version" : "1.1.0",
      "register_time" : 1588754647284,
      "is_health" : true
    } ],
    "topics_count" : 3,
    "partitions_count" : 9,
    "online_partitions_count" : 9,
    "replicas_count" : 27,
    "isr_replicas_count" : 27,
    "consumers_count" : 0
  }
}

SDK Sample Code

The SDK sample code is as follows.

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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 ShowClusterSolution {

    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();
        ShowClusterRequest request = new ShowClusterRequest();
        request.withInstanceId("{instance_id}");
        try {
            ShowClusterResponse response = client.showCluster(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 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 = ShowClusterRequest()
        request.instance_id = "{instance_id}"
        response = client.show_cluster(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"
    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 := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        Build()

    client := kafka.NewKafkaClient(
        kafka.KafkaClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ShowClusterRequest{}
	request.InstanceId = "{instance_id}"
	response, err := client.ShowCluster(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

Kafka cluster metadata is queried successfully.

Error Codes

See Error Codes.