Updated on 2026-09-02 GMT+08:00

Modifying Configuration Parameters

Function

You can modify the configuration parameters of your DCS instance to optimize DCS performance based on your requirements.

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, the following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependencies

    dcs:instance:modifyConfiguration

    Write

    instance *

    • g:EnterpriseProjectId

    • g:ResourceTag/<tag-key>

    dcs:instance:modifyConfigureation

    -

URI

PUT /v2/{project_id}/instances/{instance_id}/configs

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

instance_id

Yes

String

Definition

Instance ID.

Constraints

The specified ID must be a DCS instance ID that exists in the current tenant.

Range

N/A

Default Value

N/A

project_id

Yes

String

Definition

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

Constraints

N/A

Range

N/A

Default Value

N/A

Request Parameters

Table 2 Request body parameters

Parameter

Mandatory

Type

Description

redis_config

No

Array of RedisConfig objects

Definition

Instance configuration item list.

Constraints

The list cannot be empty. Any modification takes effect immediately.

Range

N/A

Default Value

N/A

Table 3 RedisConfig

Parameter

Mandatory

Type

Description

param_id

Yes

String

Definition

Configuration parameter ID.

Constraints

N/A

Range

N/A

Default Value

N/A

param_name

Yes

String

Definition

Configuration parameter name, which corresponds to the instance configuration parameter (such as maxmemory-policy and timeout). The available parameters and their value ranges are determined by the instance specifications and engine version. You can obtain the parameters by calling the API for querying instance configuration parameters.

Constraints

The value must be a valid configuration parameter name supported by the instance.

Range

N/A

Default Value

N/A

param_value

Yes

String

Definition

Configuration parameter value.

Constraints

The value must be within the valid value range of the parameter.

Range

N/A

Default Value

N/A

Response Parameters

Status code: 204

DCS instance configurations modified successfully.

Status code: 400

Table 4 Response body parameters

Parameter

Type

Description

error_msg

String

Parameter description:

Error message.

Value range:

N/A.

error_code

String

Parameter description:

Error code.

Value range:

For details, see Error Codes.

error_ext_msg

String

Parameter description:

Extended error information. This parameter is not used currently and is set to null.

Value range:

N/A.

Status code: 500

Table 5 Response body parameters

Parameter

Type

Description

error_msg

String

Parameter description:

Error message.

Value range:

N/A.

error_code

String

Parameter description:

Error code.

Value range:

For details, see Error Codes.

error_ext_msg

String

Parameter description:

Extended error information. This parameter is not used currently and is set to null.

Value range:

N/A.

Example Requests

Modifying the instance configuration parameters. For example, set the timeout parameter (maximum amount of idle time after which a client connection is terminated) to 1000 seconds.

PUT https://{dcs_endpoint}/v2/{project_id}/instances/{instance_id}/configs

{
  "redis_config" : [ {
    "param_id" : "1",
    "param_name" : "timeout",
    "param_value" : "1000"
  } ]
}

Example Responses

None

SDK Sample Code

The SDK sample code is as follows.

Java

Modifying the instance configuration parameters. For example, set the timeout parameter (maximum amount of idle time after which a client connection is terminated) to 1000 seconds.

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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.dcs.v2.region.DcsRegion;
import com.huaweicloud.sdk.dcs.v2.*;
import com.huaweicloud.sdk.dcs.v2.model.*;

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

public class UpdateConfigurationsSolution {

    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);

        DcsClient client = DcsClient.newBuilder()
                .withCredential(auth)
                .withRegion(DcsRegion.valueOf("<YOUR REGION>"))
                .build();
        UpdateConfigurationsRequest request = new UpdateConfigurationsRequest();
        request.withInstanceId("{instance_id}");
        ModifyRedisConfigBody body = new ModifyRedisConfigBody();
        List<RedisConfig> listbodyRedisConfig = new ArrayList<>();
        listbodyRedisConfig.add(
            new RedisConfig()
                .withParamValue("1000")
                .withParamName("timeout")
                .withParamId("1")
        );
        body.withRedisConfig(listbodyRedisConfig);
        request.withBody(body);
        try {
            UpdateConfigurationsResponse response = client.updateConfigurations(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());
        }
    }
}

Python

Modifying the instance configuration parameters. For example, set the timeout parameter (maximum amount of idle time after which a client connection is terminated) to 1000 seconds.

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkdcs.v2.region.dcs_region import DcsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkdcs.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 = DcsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(DcsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = UpdateConfigurationsRequest()
        request.instance_id = "{instance_id}"
        listRedisConfigbody = [
            RedisConfig(
                param_value="1000",
                param_name="timeout",
                param_id="1"
            )
        ]
        request.body = ModifyRedisConfigBody(
            redis_config=listRedisConfigbody
        )
        response = client.update_configurations(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Go

Modifying the instance configuration parameters. For example, set the timeout parameter (maximum amount of idle time after which a client connection is terminated) to 1000 seconds.

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package main

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


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

    client := dcs.NewDcsClient(hcClient)

    request := &model.UpdateConfigurationsRequest{}
	request.InstanceId = "{instance_id}"
	var listRedisConfigbody = []model.RedisConfig{
        {
            ParamValue: "1000",
            ParamName: "timeout",
            ParamId: "1",
        },
    }
	request.Body = &model.ModifyRedisConfigBody{
		RedisConfig: &listRedisConfigbody,
	}
	response, err := client.UpdateConfigurations(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

More

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

204

DCS instance configurations modified successfully.

400

Invalid request.

500

Internal service error.

Error Codes

See Error Codes.