Scaling Out with Idle Nodes
Function
This API is used to scale out with idle nodes.
Call Method
For details, see Calling APIs.
URI
POST /v2/{project_id}/clusters/{cluster_id}/resize-with-existed-nodes
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
cluster_id |
Yes |
String |
ID of the cluster containing the specified idles nodes. For details about how to obtain the ID, see Obtaining the Cluster ID. |
project_id |
Yes |
String |
Project ID. For details about how to obtain the ID, see Obtaining Project ID. |
Request Parameters
Parameter |
Mandatory |
Type |
Description |
---|---|---|---|
scale_out |
Yes |
ScaleOut object |
Object to be scaled out |
force_backup |
No |
Boolean |
Whether to forcibly back up data |
mode |
No |
String |
Capacity expansion backup mode. The default value is offline read-only. |
logical_cluster_name |
No |
String |
Logical cluster name In non-logical cluster mode, this parameter is left blank. In logical cluster mode, the default value is elastic_group. |
expand_with_existed_node |
Yes |
Boolean |
Whether to use the added idle nodes for scale-out |
auto_redistribute |
No |
Boolean |
Whether to automatically start redistribution after scale-out. The default value is true. |
redis_conf |
No |
RedisConfReq object |
Redistribution configuration information |
Response Parameters
None
Example Request
POST https://{Endpoint}/v2/89cd04f168b84af6be287f71730fdb4b/clusters/4ca46bf1-5c61-48ff-b4f3-0ad4e5e3ba90/resize-with-existed-nodes { "scale_out" : { "count" : 3 }, "expand_with_existed_node" : true, "auto_redistribute" : true, "redis_conf" : { "redis_mode" : "offLine", "parallel_jobs" : 4 } }
Example Response
Status code: 200
The scale-out using idle nodes is successful.
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.*; public class ResizeClusterWithExistedNodesSolution { 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(); ResizeClusterWithExistedNodesRequest request = new ResizeClusterWithExistedNodesRequest(); ResizeClusterWithExistedNodesRequestBody body = new ResizeClusterWithExistedNodesRequestBody(); BuildTaskInfo buildTaskInfobody = new BuildTaskInfo(); buildTaskInfobody.withBuildMode("read-only"); RedisConf redisConfbody = new RedisConf(); redisConfbody.withRedisMode("offLine") .withParallelJobs(4) .withParallelJob(4); ScaleOut scaleOutbody = new ScaleOut(); scaleOutbody.withCount(3); body.withBuildTaskInfo(buildTaskInfobody); body.withRedisConf(redisConfbody); body.withIsSchedulerBuildMode(false); body.withAutoRedistribute(true); body.withCreateNodeOnly(true); body.withExpandWithExistedNode(true); body.withLogicalClusterName("test-logical-cluster"); body.withMode("read-only"); body.withForceBackup(false); body.withScaleOut(scaleOutbody); request.withBody(body); try { ResizeClusterWithExistedNodesResponse response = client.resizeClusterWithExistedNodes(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 = ResizeClusterWithExistedNodesRequest() buildTaskInfobody = BuildTaskInfo( build_mode="read-only" ) redisConfbody = RedisConf( redis_mode="offLine", parallel_jobs=4, parallel_job=4 ) scaleOutbody = ScaleOut( count=3 ) request.body = ResizeClusterWithExistedNodesRequestBody( build_task_info=buildTaskInfobody, redis_conf=redisConfbody, is_scheduler_build_mode=False, auto_redistribute=True, create_node_only=True, expand_with_existed_node=True, logical_cluster_name="test-logical-cluster", mode="read-only", force_backup=False, scale_out=scaleOutbody ) response = client.resize_cluster_with_existed_nodes(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.ResizeClusterWithExistedNodesRequest{} buildTaskInfobody := &model.BuildTaskInfo{ BuildMode: "read-only", } redisConfbody := &model.RedisConf{ RedisMode: "offLine", ParallelJobs: int32(4), ParallelJob: int32(4), } scaleOutbody := &model.ScaleOut{ Count: int32(3), } request.Body = &model.ResizeClusterWithExistedNodesRequestBody{ BuildTaskInfo: buildTaskInfobody, RedisConf: redisConfbody, IsSchedulerBuildMode: false, AutoRedistribute: true, CreateNodeOnly: true, ExpandWithExistedNode: true, LogicalClusterName: "test-logical-cluster", Mode: "read-only", ForceBackup: false, ScaleOut: scaleOutbody, } response, err := client.ResizeClusterWithExistedNodes(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 scale-out using idle nodes is successful. |
400 |
Request error. |
401 |
Authentication failed. |
403 |
You do not have required permissions. |
404 |
No resources found. |
500 |
Internal server error. |
503 |
Service unavailable. |
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