Deleting CN Nodes in Batches
Function
This API is used to delete CNs from a specified cluster.
After a cluster is created, the number of required CNs varies with service requirements. The CN management function enables you to adjust the number of CNs in the cluster.
Call Method
For details, see Calling APIs.
URI
1
|
POST /v1.0/{project_id}/clusters/{cluster_id}/cns/batch-delete |
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
project_id |
Yes |
String |
Project ID. For details about how to obtain the ID, see Obtaining Project ID. |
cluster_id |
Yes |
String |
Cluster ID. For details about how to obtain the ID, see Obtaining the Cluster ID. |
Request Parameters
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
instances |
No |
Array of strings |
IDs of the CNs to be deleted |
Response Parameters
Status code: 200
Parameter |
Type |
Description |
---|---|---|
job_id |
String |
ID of the task for deleting CN nodes in batches. |
Example Request
Remove CN nodes (CN Node ID = b6ad3dc3-d2de-4d2c-a5df-fdde58eca8f0) in batches:
POST https://{Endpoint}/v1.0/89cd04f168b84af6be287f71730fdb4b/clusters/b5c45780-1006-49e3-b2d5-b3229975bbc7/cns/batch-delete { "instances" : [ "b6ad3dc3-d2de-4d2c-a5df-fdde58eca8f0" ] }
Example Response
Status code: 200
The CN nodes are successfully deleted in batches.
{ "job_id" : "2c908185841339ce018414e9944b0020" }
SDK Sample Code
The 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.dws.v2.region.DwsRegion; import com.huaweicloud.sdk.dws.v2.*; import com.huaweicloud.sdk.dws.v2.model.*; import java.util.List; import java.util.ArrayList; public class BatchDeleteClusterCnSolution { 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); DwsClient client = DwsClient.newBuilder() .withCredential(auth) .withRegion(DwsRegion.valueOf("<YOUR REGION>")) .build(); BatchDeleteClusterCnRequest request = new BatchDeleteClusterCnRequest(); BatchDeleteCn body = new BatchDeleteCn(); List<String> listbodyInstances = new ArrayList<>(); listbodyInstances.add("b6ad3dc3-d2de-4d2c-a5df-fdde58eca8f0"); body.withInstances(listbodyInstances); request.withBody(body); try { BatchDeleteClusterCnResponse response = client.batchDeleteClusterCn(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 from huaweicloudsdkcore.auth.credentials import BasicCredentials from huaweicloudsdkdws.v2.region.dws_region import DwsRegion from huaweicloudsdkcore.exceptions import exceptions from huaweicloudsdkdws.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.getenv("CLOUD_SDK_AK") sk = os.getenv("CLOUD_SDK_SK") credentials = BasicCredentials(ak, sk) \ client = DwsClient.new_builder() \ .with_credentials(credentials) \ .with_region(DwsRegion.value_of("<YOUR REGION>")) \ .build() try: request = BatchDeleteClusterCnRequest() listInstancesbody = [ "b6ad3dc3-d2de-4d2c-a5df-fdde58eca8f0" ] request.body = BatchDeleteCn( instances=listInstancesbody ) response = client.batch_delete_cluster_cn(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" dws "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/v2" "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/v2/model" region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dws/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 := dws.NewDwsClient( dws.DwsClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.BatchDeleteClusterCnRequest{} var listInstancesbody = []string{ "b6ad3dc3-d2de-4d2c-a5df-fdde58eca8f0", } request.Body = &model.BatchDeleteCn{ Instances: &listInstancesbody, } response, err := client.BatchDeleteClusterCn(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } } |
For more SDK sample codes of programming languages, visit API Explorer and click the Sample Code tab. Example codes can be automatically generated.
Status Code
Status Code |
Description |
---|---|
200 |
The CN nodes are successfully deleted in batches. |
400 |
Request error. |
401 |
Authentication failed. |
403 |
You do not have required permissions. |
404 |
No resources found. |
500 |
Internal server error. |
503 |
The service was unavailable. |
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