Updated on 2025-08-05 GMT+08:00

Backing Up a DCS Instance

Function

This API is used to back up a specific DCS instance.

Only master/standby and cluster DCS instances can be backed up and restored, while single-node instances cannot.

Calling Method

For details, see Calling APIs.

URI

POST /v2/{project_id}/instances/{instance_id}/backups

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. It can be viewed on the instance details page on the DCS console.

Constraints:

N/A

Range:

N/A

Default Value:

N/A

Request Parameters

Table 2 Request body parameters

Parameter

Mandatory

Type

Description

remark

No

String

Definition:

Description of DCS instance backup.

Constraints:

N/A

Range:

N/A

Default Value:

N/A

backup_format

No

String

Definition:

Format of the DCS instance backup.

Constraints:

N/A

Range:

  • aof

  • rdb

Default Value:

rdb

Response Parameters

Status code: 200

Table 3 Response body parameters

Parameter

Type

Description

backup_id

String

Definition:

Backup record ID.

Range:

N/A

Status code: 400

Table 4 Response body parameters

Parameter

Type

Description

error_msg

String

Definition:

Error message.

Range:

N/A

error_code

String

Definition:

Error code.

Range:

For details, see Error Codes.

error_ext_msg

String

Definition:

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

Range:

N/A

Status code: 500

Table 5 Response body parameters

Parameter

Type

Description

error_msg

String

Definition:

Error message.

Range:

N/A

error_code

String

Definition:

Error code.

Range:

For details, see Error Codes.

error_ext_msg

String

Definition:

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

Range:

N/A

Example Requests

Backing up a specified DCS instance to an AOF file

POST https://{dcs_endpoint}/v2/{project_id}/instances/{instance_id}/backups

{
  "remark" : "Backup instances",
  "backup_format" : "aof"
}

Example Responses

Status code: 200

Definition:

The specified DCS instance is backed up successfully.

{
  "backup_id" : "548ceeff-2cbb-47ab-9a1c-7b085a8c08d7"
}

SDK Sample Code

The SDK sample code is as follows.

Backing up a specified DCS instance to an AOF file

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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.*;


public class CopyInstanceSolution {

    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();
        CopyInstanceRequest request = new CopyInstanceRequest();
        request.withInstanceId("{instance_id}");
        BackupInstanceBody body = new BackupInstanceBody();
        body.withBackupFormat(BackupInstanceBody.BackupFormatEnum.fromValue("aof"));
        body.withRemark("Backup instances");
        request.withBody(body);
        try {
            CopyInstanceResponse response = client.copyInstance(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());
        }
    }
}

Backing up a specified DCS instance to an AOF file

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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 = CopyInstanceRequest()
        request.instance_id = "{instance_id}"
        request.body = BackupInstanceBody(
            backup_format="aof",
            remark="Backup instances"
        )
        response = client.copy_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)

Backing up a specified DCS instance to an AOF file

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

    client := dcs.NewDcsClient(
        dcs.DcsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CopyInstanceRequest{}
	request.InstanceId = "{instance_id}"
	backupFormatBackupInstanceBody:= model.GetBackupInstanceBodyBackupFormatEnum().AOF
	remarkBackupInstanceBody:= "Backup instances"
	request.Body = &model.BackupInstanceBody{
		BackupFormat: &backupFormatBackupInstanceBody,
		Remark: &remarkBackupInstanceBody,
	}
	response, err := client.CopyInstance(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

Definition:

The specified DCS instance is backed up successfully.

400

Definition:

Invalid request.

500

Definition:

Internal service error.

Error Codes

See Error Codes.