Backing Up a DCS Instance
Function
This API is used to back up a specific DCS instance.
![](https://support.huaweicloud.com/intl/en-us/api-dcs/public_sys-resources/note_3.0-en-us.png)
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
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
instance_id |
Yes |
String |
Instance ID. |
project_id |
Yes |
String |
Project ID. For details, see Obtaining a Project ID. |
Request Parameters
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
remark |
No |
String |
Description of DCS instance backup. |
backup_format |
No |
String |
Format of the DCS instance backup. Enumeration values:
|
Response Parameters
Status code: 200
Parameter |
Type |
Description |
---|---|---|
backup_id |
String |
Backup ID. |
Status code: 400
Parameter |
Type |
Description |
---|---|---|
error_msg |
String |
Error message. Maximum: 1024 |
error_code |
String |
Error code. Maximum: 9 |
error_ext_msg |
String |
Extended error information. This parameter is not used currently and is set to null. Maximum: 1024 |
Status code: 500
Parameter |
Type |
Description |
---|---|---|
error_msg |
String |
Error message. Maximum: 1024 |
error_code |
String |
Error code. Maximum: 9 |
error_ext_msg |
String |
Extended error information. This parameter is not used currently and is set to null. Maximum: 1024 |
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
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"); ICredential auth = new BasicCredentials() .withAk(ak) .withSk(sk); DcsClient client = DcsClient.newBuilder() .withCredential(auth) .withRegion(DcsRegion.valueOf("<YOUR REGION>")) .build(); CopyInstanceRequest request = new CopyInstanceRequest(); 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 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 = __import__('os').getenv("CLOUD_SDK_AK") sk = __import__('os').getenv("CLOUD_SDK_SK") credentials = BasicCredentials(ak, sk) \ client = DcsClient.new_builder() \ .with_credentials(credentials) \ .with_region(DcsRegion.value_of("<YOUR REGION>")) \ .build() try: request = CopyInstanceRequest() 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") auth := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). Build() client := dcs.NewDcsClient( dcs.DcsClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.CopyInstanceRequest{} 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 |
The specified DCS instance is backed up successfully. |
400 |
Invalid request. |
500 |
Internal service error. |
Error Codes
See Error Codes.
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