Scaling a Node Pool

Function

This API is used to scale in or out a node pool.

The URL for cluster management is in the format of https://Endpoint/uri, where uri specifies the resource path for API access.

Calling Method

For details, see Calling APIs.

URI

POST /api/v3/projects/{project_id}/clusters/{cluster_id}/nodepools/{nodepool_id}/operation/scale

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Details: Project ID. For details about how to obtain the value, see How to Obtain Parameters in the API URI. Constraints: None Options: Project IDs of the account Default value: N/A
cluster_id	Yes	String	Details: Cluster ID. For details about how to obtain the value, see How to Obtain Parameters in the API URI. Constraints: None Options: Cluster IDs Default value: N/A
nodepool_id	Yes	String	Details: Node pool ID. For details about how to obtain the ID, see How to Obtain Parameters in the API URI. Constraints: None Options: Cluster IDs Default value: N/A

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
Content-Type	Yes	String	Details: The request body type or format Constraints: The GET method is not verified. Options: application/json application/json;charset=utf-8 application/x-pem-file multipart/form-data (used when the FormData parameter is present) Default value: N/A
X-Auth-Token	Yes	String	Details: Requests for calling an API can be authenticated using either a token or AK/SK. If token-based authentication is used, this parameter is mandatory and must be set to a user token. For details, see Obtaining a User Token. Constraints: None Options: N/A Default value: N/A

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
kind	Yes	String	Details: API type Constraints: None Options: The value is fixed at NodePool. Default value: N/A
apiVersion	Yes	String	Details: API version Constraints: None Options: The value is fixed at v3. Default value: N/A
spec	Yes	ScaleNodePoolSpec object	Details: Parameters in the request for scaling a node pool Constraints: None

**Table 4** ScaleNodePoolSpec
Parameter	Mandatory	Type	Description
desiredNodeCount	Yes	Integer	Details: Desired number of nodes in a node pool Constraints: This parameter is mandatory. If it is omitted, the default value 0 is used. This will result in the deletion of all nodes in the node pool scaling group. Options: 0 or a positive integer Default value: 0
scaleGroups	Yes	Array of strings	Details: Name of the scaling group in a node pool to be scaled Constraints: Only one scaling group name can be specified. If the default scaling group is required, set the parameter to default. Options: N/A Default value: N/A
options	No	ScaleNodePoolOptions object	Details: Configurations of node pool scaling options Constraints: None

**Table 5** ScaleNodePoolOptions
Parameter	Mandatory	Type	Description
scalableChecking	No	String	Details: Policy for checking the scale-out Constraints: None Options: instant: When a scale-out request is delivered, the system synchronously checks whether the underlying resources are sold out. async: When a scale-out request is delivered, the system asynchronously checks whether the underlying resources are sold out. Default value: instant
billingConfigOverride	No	ScaleUpBillingConfigOverride object	Details: The default billing mode of a node pool will be overwritten when the node pool is scaled out. If the scale-out of yearly/monthly nodes is needed in a new node pool, this parameter is required. In other scenarios, you are not advised to use this parameter. Constraints: Only clusters of v1.21.11-r0, v1.23.9-r0, v1.25.4-r0, and later versions support the scale-out of yearly/monthly nodes in pay-per-use node pools.

**Table 6** ScaleUpBillingConfigOverride
Parameter	Mandatory	Type	Description
billingMode	No	Integer	Details: Billing mode of a node Constraints: This parameter is optional. If it is not specified, the default billing mode of the node pool where the node is in is used. Options: 0: pay-per-use 1: yearly/monthly Default value: N/A
extendParam	No	ScaleUpExtendParam object	Details: Parameters for configuring the yearly/monthly billing mode Constraints: This parameter is not considered in the pay-per-use billing mode. This parameter is mandatory for the yearly/monthly billing mode.

**Table 7** ScaleUpExtendParam
Parameter	Mandatory	Type	Description
periodNum	Yes	Integer	Details: Yearly/Monthly duration Constraints: None Options: If periodType is month, the value ranges from 1 to 9. If periodType is year, the value ranges from 1 to 3. Default value: N/A
periodType	Yes	String	Details: Yearly/Monthly type Constraints: None Options: year month Default value: N/A
isAutoRenew	No	Boolean	Details: Whether to enable auto renewal Constraints: It is valid when billingMode is set to 1. If it is left blank, auto renewal is not enabled by default. Options: true: Auto renewal is enabled. false: Auto renewal is not enabled. Default value: N/A
isAutoPay	No	Boolean	Details: Whether an order is automatically or manually paid Constraints: This field is valid when billingMode is set to 1 or 2 (discarded). If not specified when billingMode is set to 1, auto payment is not enabled. Options: true: Auto payment is enabled. false: Auto payment is not enabled. Default value: N/A

Response Parameters

None

Example Requests

Scale out nodes in the default scaling group of a node pool (pay-per-use).

{
  "kind" : "NodePool",
  "apiVersion" : "v3",
  "spec" : {
    "desiredNodeCount" : 1,
    "scaleGroups" : [ "default" ]
  }
}

Scale out nodes in the default scaling group of a node pool (yearly/monthly).

{
  "kind" : "NodePool",
  "apiVersion" : "v3",
  "spec" : {
    "desiredNodeCount" : 1,
    "scaleGroups" : [ "default" ],
    "options" : {
      "billingConfigOverride" : {
        "billingMode" : 1,
        "extendParam" : {
          "periodNum" : 1,
          "periodType" : "month",
          "isAutoRenew" : false,
          "isAutoPay" : false
        }
      }
    }
  }
}

Example Responses

None

SDK Sample Code

The SDK sample code is as follows.

Scale out nodes in the default scaling group of a node pool (pay-per-use).

        
         
           
           
             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.cce.v3.region.CceRegion;
import com.huaweicloud.sdk.cce.v3.*;
import com.huaweicloud.sdk.cce.v3.model.*;

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

public class ScaleNodePoolSolution {

    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);

        CceClient client = CceClient.newBuilder()
                .withCredential(auth)
                .withRegion(CceRegion.valueOf("<YOUR REGION>"))
                .build();
        ScaleNodePoolRequest request = new ScaleNodePoolRequest();
        request.withClusterId("{cluster_id}");
        request.withNodepoolId("{nodepool_id}");
        ScaleNodePoolRequestBody body = new ScaleNodePoolRequestBody();
        List<String> listSpecScaleGroups = new ArrayList<>();
        listSpecScaleGroups.add("default");
        ScaleNodePoolSpec specbody = new ScaleNodePoolSpec();
        specbody.withDesiredNodeCount(1)
            .withScaleGroups(listSpecScaleGroups);
        body.withSpec(specbody);
        body.withApiVersion("v3");
        body.withKind("NodePool");
        request.withBody(body);
        try {
            ScaleNodePoolResponse response = client.scaleNodePool(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());
        }
    }
}

            

          

        
       

Scale out nodes in the default scaling group of a node pool (yearly/monthly).

        
         
           
           
             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.cce.v3.region.CceRegion;
import com.huaweicloud.sdk.cce.v3.*;
import com.huaweicloud.sdk.cce.v3.model.*;

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

public class ScaleNodePoolSolution {

    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);

        CceClient client = CceClient.newBuilder()
                .withCredential(auth)
                .withRegion(CceRegion.valueOf("<YOUR REGION>"))
                .build();
        ScaleNodePoolRequest request = new ScaleNodePoolRequest();
        request.withClusterId("{cluster_id}");
        request.withNodepoolId("{nodepool_id}");
        ScaleNodePoolRequestBody body = new ScaleNodePoolRequestBody();
        ScaleUpExtendParam extendParamBillingConfigOverride = new ScaleUpExtendParam();
        extendParamBillingConfigOverride.withPeriodNum(1)
            .withPeriodType("month")
            .withIsAutoRenew(false)
            .withIsAutoPay(false);
        ScaleUpBillingConfigOverride billingConfigOverrideOptions = new ScaleUpBillingConfigOverride();
        billingConfigOverrideOptions.withBillingMode(1)
            .withExtendParam(extendParamBillingConfigOverride);
        ScaleNodePoolOptions optionsSpec = new ScaleNodePoolOptions();
        optionsSpec.withBillingConfigOverride(billingConfigOverrideOptions);
        List<String> listSpecScaleGroups = new ArrayList<>();
        listSpecScaleGroups.add("default");
        ScaleNodePoolSpec specbody = new ScaleNodePoolSpec();
        specbody.withDesiredNodeCount(1)
            .withScaleGroups(listSpecScaleGroups)
            .withOptions(optionsSpec);
        body.withSpec(specbody);
        body.withApiVersion("v3");
        body.withKind("NodePool");
        request.withBody(body);
        try {
            ScaleNodePoolResponse response = client.scaleNodePool(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());
        }
    }
}

            

          

        
       

Scale out nodes in the default scaling group of a node pool (pay-per-use).

        
         
           
           
             # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkcce.v3.region.cce_region import CceRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkcce.v3 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 = CceClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(CceRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ScaleNodePoolRequest()
        request.cluster_id = "{cluster_id}"
        request.nodepool_id = "{nodepool_id}"
        listScaleGroupsSpec = [
            "default"
        ]
        specbody = ScaleNodePoolSpec(
            desired_node_count=1,
            scale_groups=listScaleGroupsSpec
        )
        request.body = ScaleNodePoolRequestBody(
            spec=specbody,
            api_version="v3",
            kind="NodePool"
        )
        response = client.scale_node_pool(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

            

          

        
       

Scale out nodes in the default scaling group of a node pool (yearly/monthly).

        
         
           
           
             # coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkcce.v3.region.cce_region import CceRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkcce.v3 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 = CceClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(CceRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ScaleNodePoolRequest()
        request.cluster_id = "{cluster_id}"
        request.nodepool_id = "{nodepool_id}"
        extendParamBillingConfigOverride = ScaleUpExtendParam(
            period_num=1,
            period_type="month",
            is_auto_renew=False,
            is_auto_pay=False
        )
        billingConfigOverrideOptions = ScaleUpBillingConfigOverride(
            billing_mode=1,
            extend_param=extendParamBillingConfigOverride
        )
        optionsSpec = ScaleNodePoolOptions(
            billing_config_override=billingConfigOverrideOptions
        )
        listScaleGroupsSpec = [
            "default"
        ]
        specbody = ScaleNodePoolSpec(
            desired_node_count=1,
            scale_groups=listScaleGroupsSpec,
            options=optionsSpec
        )
        request.body = ScaleNodePoolRequestBody(
            spec=specbody,
            api_version="v3",
            kind="NodePool"
        )
        response = client.scale_node_pool(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

            

          

        
       

Scale out nodes in the default scaling group of a node pool (pay-per-use).

        
         
           
           
             package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    cce "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3/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 := cce.NewCceClient(
        cce.CceClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ScaleNodePoolRequest{}
	request.ClusterId = "{cluster_id}"
	request.NodepoolId = "{nodepool_id}"
	var listScaleGroupsSpec = []string{
        "default",
    }
	specbody := &model.ScaleNodePoolSpec{
		DesiredNodeCount: int32(1),
		ScaleGroups: listScaleGroupsSpec,
	}
	request.Body = &model.ScaleNodePoolRequestBody{
		Spec: specbody,
		ApiVersion: "v3",
		Kind: "NodePool",
	}
	response, err := client.ScaleNodePool(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

            

          

        
       

Scale out nodes in the default scaling group of a node pool (yearly/monthly).

        
         
           
           
             package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    cce "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/cce/v3/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 := cce.NewCceClient(
        cce.CceClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.ScaleNodePoolRequest{}
	request.ClusterId = "{cluster_id}"
	request.NodepoolId = "{nodepool_id}"
	isAutoRenewExtendParam:= false
	isAutoPayExtendParam:= false
	extendParamBillingConfigOverride := &model.ScaleUpExtendParam{
		PeriodNum: int32(1),
		PeriodType: "month",
		IsAutoRenew: &isAutoRenewExtendParam,
		IsAutoPay: &isAutoPayExtendParam,
	}
	billingConfigOverrideOptions := &model.ScaleUpBillingConfigOverride{
		BillingMode: int32(1),
		ExtendParam: extendParamBillingConfigOverride,
	}
	optionsSpec := &model.ScaleNodePoolOptions{
		BillingConfigOverride: billingConfigOverrideOptions,
	}
	var listScaleGroupsSpec = []string{
        "default",
    }
	specbody := &model.ScaleNodePoolSpec{
		DesiredNodeCount: int32(1),
		ScaleGroups: listScaleGroupsSpec,
		Options: optionsSpec,
	}
	request.Body = &model.ScaleNodePoolRequestBody{
		Spec: specbody,
		ApiVersion: "v3",
		Kind: "NodePool",
	}
	response, err := client.ScaleNodePool(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
202	The node pool scaling is accepted. Nodes in the node pool will be added or deleted based on the expected number of nodes in the node pool after scaling.