文档首页> MapReduce服务 MRS> API参考> API V1.1> 集群管理接口> 调整集群节点

更新时间：2024-01-23 GMT+08:00

调整集群节点

功能介绍

创建集群后，扩容/缩容集群Core节点或者Task节点。MRS集群创建成功后不支持调整Master节点数量，即不支持扩缩容Master节点。该接口不兼容Sahara。处于running状态的集群才允许扩容/缩容，其他状态则不允许扩容/缩容。集群状态和集群ID可参考查询集群列表接口获取。本章节的接口只支持流式集群、分析集群和混合集群，不支持自定义集群。

接口约束

无

调用方法

请参见如何调用API。

URI

PUT /v1.1/{project_id}/cluster_infos/{cluster_id}

表1 路径参数
参数	是否必选	参数类型	描述
project_id	是	String	项目编号。获取方法，请参见获取项目ID。
cluster_id	是	String	集群ID。获取方法，请参见获取集群ID。

请求参数

表2 请求Body参数
参数	是否必选	参数类型	描述
service_id	否	String	服务ID，为扩展接口，预留此参数。用户不需要配置。
plan_id	否	String	套餐ID，为扩展接口，预留此参数。用户不需要配置。
parameters	是	ClusterScalingParams object	请求参数集合。
previous_values	否	Map<String,String>	扩展接口，预留此参数。用户不需要配置。

表3 ClusterScalingParams
参数	是否必选	参数类型	描述
order_id	否	String	扩容/缩容时系统获取的订单号，用户不需要配置。
scale_type	是	String	scale_in：缩容 scale_out：扩容
node_id	是	String	扩容/缩容时新增或者减少节点的ID标识,参数值固定为node_orderadd。
node_group	否	String	扩容或缩容的节点组。如果node_group为core_node_default_group，表示Core节点组。如果node_group为task_node_default_group，表示Task节点组。该字段可以为空，为空时，系统默认值为core_node_default_group。
skip_bootstrap_scripts	否	String	是否跳过引导操作，默认为false，即执行引导操作。仅在创建集群时配置了引导操作且扩容时有意义，表示扩容时是否在新增节点上执行创建集群时指定的引导操作。
scale_without_start	否	Boolean	扩容后是否启动扩容节点上的组件。 true：扩容后不启动组件。 false：扩容后启动组件。
server_ids	否	Array of strings	缩容Task节点时指定待删除Task节点的ID列表。当scale_type为扩容时，该参数不生效。当scale_type为缩容且该参数不为空时，删除指定的Task节点。当scale_type为缩容且server_ids为空时，按照系统规则自动选择删除Task节点。
instances	是	Integer	扩容或缩容的节点数。- 扩容时的最大节点数为（500 - 集群Core/Task节点数）。例如，当前集群Core节点数为3，此处扩容的节点数必须小于等于497。 Core和Task节点总数最大值为500，如果用户需要的Core/Task节点数大于500，可以联系技术支持人员或者调用后台接口修改数据库。- 缩容时Core节点数大于3或者Task节点数大于0可以进行节点删除。例如，当前集群Core节点和Task节点数均为5，Core节点可缩容的节点数为2（5减去3），Task节点可缩容节点数为小于等于5。
task_node_info	否	TaskNodeInfo object	Task节点规格。当Task节点个数为0时，使用该字段指定Task节点的规格。当Task节点个数大于0时，不能使用该字段。该字段为空时，不填即可，字段内含必填参数不可使用会传空值对象的置空按钮。

表4 TaskNodeInfo
参数	是否必选	参数类型	描述
node_size	是	String	Task节点的实例规格，例如：c3.4xlarge.2.linux.bigdata。实例规格详细说明请参见MRS所使用的弹性云服务器规格和MRS所使用的裸金属服务器规格。该参数建议从MRS控制台的集群创建页面获取对应区域对应版本所支持的规格。
data_volume_type	是	String	Task节点数据磁盘存储类别，目前支持SATA、SAS和SSD。 SATA：普通IO SAS：高IO SSD：超高IO GPSSD：通用型SSD
data_volume_count	是	Integer	Task节点数据磁盘存储数目，取值范围：0～10。
data_volume_size	是	Integer	Task节点数据磁盘存储大小。取值范围：100GB～32000GB，传值只需填数字，不需要带单位GB。

响应参数

状态码： 200

表5 响应Body参数
参数	参数类型	描述
result	String	操作结果。 - succeeded：操作成功 - 操作失败时返回的错误码信息如错误码所示。

请求示例

在MRS集群中扩容1个core节点。

PUT /v1.1/{project_id}/cluster_infos/{cluster_id}

{
  "service_id" : "",
  "plan_id" : "",
  "parameters" : {
    "order_id" : "",
    "scale_type" : "scale_out",
    "node_id" : "node_orderadd",
    "node_group" : "core_node_default_group",
    "instances" : "1",
    "skip_bootstrap_scripts" : false,
    "scale_without_start" : false
  },
  "previous_values" : { }
}

当Task节点个数大于零时，在MRS集群中扩容1个Task节点。

PUT /v1.1/{project_id}/cluster_infos/{cluster_id}

{
  "service_id" : "",
  "plan_id" : "",
  "parameters" : {
    "order_id" : "",
    "scale_type" : "scale_out",
    "node_id" : "node_orderadd",
    "node_group" : "task_node_default_group",
    "instances" : "1",
    "skip_bootstrap_scripts" : false,
    "scale_without_start" : false
  },
  "previous_values" : { }
}

当Task节点个数大于零时，在MRS集群中扩容1个规格为s3.xlarge.2.linux.bigdata 的Task节点。

PUT /v1.1/{project_id}/cluster_infos/{cluster_id}

{
  "service_id" : "",
  "plan_id" : "",
  "parameters" : {
    "order_id" : "",
    "scale_type" : "scale_out",
    "node_id" : "node_orderadd",
    "node_group" : "task_node_default_group",
    "task_node_info" : {
      "node_size" : "s3.xlarge.2.linux.bigdata",
      "data_volume_type" : "SATA",
      "data_volume_count" : 2,
      "data_volume_size" : 600
    },
    "instances" : "1",
    "scale_without_start" : false
  },
  "previous_values" : { }
}

在MRS集群中缩容1个Core节点。

PUT /v1.1/{project_id}/cluster_infos/{cluster_id}

{
  "service_id" : "",
  "plan_id" : "",
  "parameters" : {
    "order_id" : "",
    "scale_type" : "scale_in",
    "node_id" : "node_orderadd",
    "node_group" : "core_node_default_group",
    "instances" : "1"
  },
  "previous_values" : { }
}

在MRS集群中缩容1个Task节点

PUT /v1.1/{project_id}/cluster_infos/{cluster_id}

{
  "service_id" : "",
  "plan_id" : "",
  "parameters" : {
    "order_id" : "",
    "scale_type" : "scale_in",
    "node_id" : "node_orderadd",
    "node_group" : "task_node_default_group",
    "instances" : "1"
  },
  "previous_values" : { }
}

在MRS集群中缩容指定的Task节点。

PUT /v1.1/{project_id}/cluster_infos/{cluster_id}

{
  "service_id" : "",
  "plan_id" : "",
  "parameters" : {
    "order_id" : "",
    "scale_type" : "scale_in",
    "node_id" : "node_orderadd",
    "node_group" : "task_node_default_group",
    "instances" : "2",
    "server_ids" : [ "c9573435-7814-4b2c-9131-ad78b814414c", "a4951009-6a0f-4e7b-9c81-9d4bd1f8c537" ]
  },
  "previous_values" : { }
}

响应示例

状态码： 200

扩容/缩容集群Core节点或者Task节点成功。

{
  "result" : "succeeded"
}

SDK代码示例

SDK代码示例如下。

在MRS集群中扩容1个core节点。

        
         
           
           
             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.mrs.v1.region.MrsRegion;
import com.huaweicloud.sdk.mrs.v1.*;
import com.huaweicloud.sdk.mrs.v1.model.*;

import java.util.Map;
import java.util.HashMap;

public class UpdateClusterScalingSolution {

    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);

        MrsClient client = MrsClient.newBuilder()
                .withCredential(auth)
                .withRegion(MrsRegion.valueOf("<YOUR REGION>"))
                .build();
        UpdateClusterScalingRequest request = new UpdateClusterScalingRequest();
        ClusterScalingReq body = new ClusterScalingReq();
        ClusterScalingParams parametersbody = new ClusterScalingParams();
        parametersbody.withOrderId("")
            .withScaleType(ClusterScalingParams.ScaleTypeEnum.fromValue("scale_out"))
            .withNodeId("node_orderadd")
            .withNodeGroup("core_node_default_group")
            .withSkipBootstrapScripts("false")
            .withScaleWithoutStart(false)
            .withInstances(1);
        body.withParameters(parametersbody);
        body.withPlanId("");
        body.withServiceId("");
        request.withBody(body);
        try {
            UpdateClusterScalingResponse response = client.updateClusterScaling(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());
        }
    }
}

            

          

        
       

当Task节点个数大于零时，在MRS集群中扩容1个Task节点。

        
         
           
           
             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.mrs.v1.region.MrsRegion;
import com.huaweicloud.sdk.mrs.v1.*;
import com.huaweicloud.sdk.mrs.v1.model.*;

import java.util.Map;
import java.util.HashMap;

public class UpdateClusterScalingSolution {

    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);

        MrsClient client = MrsClient.newBuilder()
                .withCredential(auth)
                .withRegion(MrsRegion.valueOf("<YOUR REGION>"))
                .build();
        UpdateClusterScalingRequest request = new UpdateClusterScalingRequest();
        ClusterScalingReq body = new ClusterScalingReq();
        ClusterScalingParams parametersbody = new ClusterScalingParams();
        parametersbody.withOrderId("")
            .withScaleType(ClusterScalingParams.ScaleTypeEnum.fromValue("scale_out"))
            .withNodeId("node_orderadd")
            .withNodeGroup("task_node_default_group")
            .withSkipBootstrapScripts("false")
            .withScaleWithoutStart(false)
            .withInstances(1);
        body.withParameters(parametersbody);
        body.withPlanId("");
        body.withServiceId("");
        request.withBody(body);
        try {
            UpdateClusterScalingResponse response = client.updateClusterScaling(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());
        }
    }
}

            

          

        
       

当Task节点个数大于零时，在MRS集群中扩容1个规格为s3.xlarge.2.linux.bigdata 的Task节点。

        
         
           
           
             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.mrs.v1.region.MrsRegion;
import com.huaweicloud.sdk.mrs.v1.*;
import com.huaweicloud.sdk.mrs.v1.model.*;

import java.util.Map;
import java.util.HashMap;

public class UpdateClusterScalingSolution {

    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);

        MrsClient client = MrsClient.newBuilder()
                .withCredential(auth)
                .withRegion(MrsRegion.valueOf("<YOUR REGION>"))
                .build();
        UpdateClusterScalingRequest request = new UpdateClusterScalingRequest();
        ClusterScalingReq body = new ClusterScalingReq();
        TaskNodeInfo taskNodeInfoParameters = new TaskNodeInfo();
        taskNodeInfoParameters.withNodeSize("s3.xlarge.2.linux.bigdata")
            .withDataVolumeType(TaskNodeInfo.DataVolumeTypeEnum.fromValue("SATA"))
            .withDataVolumeCount(2)
            .withDataVolumeSize(600);
        ClusterScalingParams parametersbody = new ClusterScalingParams();
        parametersbody.withOrderId("")
            .withScaleType(ClusterScalingParams.ScaleTypeEnum.fromValue("scale_out"))
            .withNodeId("node_orderadd")
            .withNodeGroup("task_node_default_group")
            .withScaleWithoutStart(false)
            .withInstances(1)
            .withTaskNodeInfo(taskNodeInfoParameters);
        body.withParameters(parametersbody);
        body.withPlanId("");
        body.withServiceId("");
        request.withBody(body);
        try {
            UpdateClusterScalingResponse response = client.updateClusterScaling(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());
        }
    }
}

            

          

        
       

在MRS集群中缩容1个Core节点。

        
         
           
           
             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.mrs.v1.region.MrsRegion;
import com.huaweicloud.sdk.mrs.v1.*;
import com.huaweicloud.sdk.mrs.v1.model.*;

import java.util.Map;
import java.util.HashMap;

public class UpdateClusterScalingSolution {

    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);

        MrsClient client = MrsClient.newBuilder()
                .withCredential(auth)
                .withRegion(MrsRegion.valueOf("<YOUR REGION>"))
                .build();
        UpdateClusterScalingRequest request = new UpdateClusterScalingRequest();
        ClusterScalingReq body = new ClusterScalingReq();
        ClusterScalingParams parametersbody = new ClusterScalingParams();
        parametersbody.withOrderId("")
            .withScaleType(ClusterScalingParams.ScaleTypeEnum.fromValue("scale_in"))
            .withNodeId("node_orderadd")
            .withNodeGroup("core_node_default_group")
            .withInstances(1);
        body.withParameters(parametersbody);
        body.withPlanId("");
        body.withServiceId("");
        request.withBody(body);
        try {
            UpdateClusterScalingResponse response = client.updateClusterScaling(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());
        }
    }
}

            

          

        
       

在MRS集群中缩容1个Task节点

        
         
           
           
             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.mrs.v1.region.MrsRegion;
import com.huaweicloud.sdk.mrs.v1.*;
import com.huaweicloud.sdk.mrs.v1.model.*;

import java.util.Map;
import java.util.HashMap;

public class UpdateClusterScalingSolution {

    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);

        MrsClient client = MrsClient.newBuilder()
                .withCredential(auth)
                .withRegion(MrsRegion.valueOf("<YOUR REGION>"))
                .build();
        UpdateClusterScalingRequest request = new UpdateClusterScalingRequest();
        ClusterScalingReq body = new ClusterScalingReq();
        ClusterScalingParams parametersbody = new ClusterScalingParams();
        parametersbody.withOrderId("")
            .withScaleType(ClusterScalingParams.ScaleTypeEnum.fromValue("scale_in"))
            .withNodeId("node_orderadd")
            .withNodeGroup("task_node_default_group")
            .withInstances(1);
        body.withParameters(parametersbody);
        body.withPlanId("");
        body.withServiceId("");
        request.withBody(body);
        try {
            UpdateClusterScalingResponse response = client.updateClusterScaling(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());
        }
    }
}

            

          

        
       

在MRS集群中缩容指定的Task节点。

        
         
           
           
             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.mrs.v1.region.MrsRegion;
import com.huaweicloud.sdk.mrs.v1.*;
import com.huaweicloud.sdk.mrs.v1.model.*;

import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;

public class UpdateClusterScalingSolution {

    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);

        MrsClient client = MrsClient.newBuilder()
                .withCredential(auth)
                .withRegion(MrsRegion.valueOf("<YOUR REGION>"))
                .build();
        UpdateClusterScalingRequest request = new UpdateClusterScalingRequest();
        ClusterScalingReq body = new ClusterScalingReq();
        List<String> listParametersServerIds = new ArrayList<>();
        listParametersServerIds.add("c9573435-7814-4b2c-9131-ad78b814414c");
        listParametersServerIds.add("a4951009-6a0f-4e7b-9c81-9d4bd1f8c537");
        ClusterScalingParams parametersbody = new ClusterScalingParams();
        parametersbody.withOrderId("")
            .withScaleType(ClusterScalingParams.ScaleTypeEnum.fromValue("scale_in"))
            .withNodeId("node_orderadd")
            .withNodeGroup("task_node_default_group")
            .withServerIds(listParametersServerIds)
            .withInstances(2);
        body.withParameters(parametersbody);
        body.withPlanId("");
        body.withServiceId("");
        request.withBody(body);
        try {
            UpdateClusterScalingResponse response = client.updateClusterScaling(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());
        }
    }
}

            

          

        
       

在MRS集群中扩容1个core节点。

        
         
           
           
             # coding: utf-8

from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkmrs.v1.region.mrs_region import MrsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkmrs.v1 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 = MrsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(MrsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = UpdateClusterScalingRequest()
        parametersbody = ClusterScalingParams(
            order_id="",
            scale_type="scale_out",
            node_id="node_orderadd",
            node_group="core_node_default_group",
            skip_bootstrap_scripts="false",
            scale_without_start=False,
            instances=1
        )
        request.body = ClusterScalingReq(
            parameters=parametersbody,
            plan_id="",
            service_id=""
        )
        response = client.update_cluster_scaling(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

            

          

        
       

当Task节点个数大于零时，在MRS集群中扩容1个Task节点。

        
         
           
           
             # coding: utf-8

from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkmrs.v1.region.mrs_region import MrsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkmrs.v1 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 = MrsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(MrsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = UpdateClusterScalingRequest()
        parametersbody = ClusterScalingParams(
            order_id="",
            scale_type="scale_out",
            node_id="node_orderadd",
            node_group="task_node_default_group",
            skip_bootstrap_scripts="false",
            scale_without_start=False,
            instances=1
        )
        request.body = ClusterScalingReq(
            parameters=parametersbody,
            plan_id="",
            service_id=""
        )
        response = client.update_cluster_scaling(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

            

          

        
       

当Task节点个数大于零时，在MRS集群中扩容1个规格为s3.xlarge.2.linux.bigdata 的Task节点。

        
         
           
           
             # coding: utf-8

from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkmrs.v1.region.mrs_region import MrsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkmrs.v1 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 = MrsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(MrsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = UpdateClusterScalingRequest()
        taskNodeInfoParameters = TaskNodeInfo(
            node_size="s3.xlarge.2.linux.bigdata",
            data_volume_type="SATA",
            data_volume_count=2,
            data_volume_size=600
        )
        parametersbody = ClusterScalingParams(
            order_id="",
            scale_type="scale_out",
            node_id="node_orderadd",
            node_group="task_node_default_group",
            scale_without_start=False,
            instances=1,
            task_node_info=taskNodeInfoParameters
        )
        request.body = ClusterScalingReq(
            parameters=parametersbody,
            plan_id="",
            service_id=""
        )
        response = client.update_cluster_scaling(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

            

          

        
       

在MRS集群中缩容1个Core节点。

        
         
           
           
             # coding: utf-8

from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkmrs.v1.region.mrs_region import MrsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkmrs.v1 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 = MrsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(MrsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = UpdateClusterScalingRequest()
        parametersbody = ClusterScalingParams(
            order_id="",
            scale_type="scale_in",
            node_id="node_orderadd",
            node_group="core_node_default_group",
            instances=1
        )
        request.body = ClusterScalingReq(
            parameters=parametersbody,
            plan_id="",
            service_id=""
        )
        response = client.update_cluster_scaling(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

            

          

        
       

在MRS集群中缩容1个Task节点

        
         
           
           
             # coding: utf-8

from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkmrs.v1.region.mrs_region import MrsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkmrs.v1 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 = MrsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(MrsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = UpdateClusterScalingRequest()
        parametersbody = ClusterScalingParams(
            order_id="",
            scale_type="scale_in",
            node_id="node_orderadd",
            node_group="task_node_default_group",
            instances=1
        )
        request.body = ClusterScalingReq(
            parameters=parametersbody,
            plan_id="",
            service_id=""
        )
        response = client.update_cluster_scaling(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

            

          

        
       

在MRS集群中缩容指定的Task节点。

        
         
           
           
             # coding: utf-8

from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkmrs.v1.region.mrs_region import MrsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkmrs.v1 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 = MrsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(MrsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = UpdateClusterScalingRequest()
        listServerIdsParameters = [
            "c9573435-7814-4b2c-9131-ad78b814414c",
            "a4951009-6a0f-4e7b-9c81-9d4bd1f8c537"
        ]
        parametersbody = ClusterScalingParams(
            order_id="",
            scale_type="scale_in",
            node_id="node_orderadd",
            node_group="task_node_default_group",
            server_ids=listServerIdsParameters,
            instances=2
        )
        request.body = ClusterScalingReq(
            parameters=parametersbody,
            plan_id="",
            service_id=""
        )
        response = client.update_cluster_scaling(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

            

          

        
       

在MRS集群中扩容1个core节点。

        
         
           
           
             package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    mrs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/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 := mrs.NewMrsClient(
        mrs.MrsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.UpdateClusterScalingRequest{}
	orderIdParameters:= ""
	nodeGroupParameters:= "core_node_default_group"
	skipBootstrapScriptsParameters:= "false"
	scaleWithoutStartParameters:= false
	parametersbody := &model.ClusterScalingParams{
		OrderId: &orderIdParameters,
		ScaleType: model.GetClusterScalingParamsScaleTypeEnum().SCALE_OUT,
		NodeId: "node_orderadd",
		NodeGroup: &nodeGroupParameters,
		SkipBootstrapScripts: &skipBootstrapScriptsParameters,
		ScaleWithoutStart: &scaleWithoutStartParameters,
		Instances: int32(1),
	}
	planIdClusterScalingReq:= ""
	serviceIdClusterScalingReq:= ""
	request.Body = &model.ClusterScalingReq{
		Parameters: parametersbody,
		PlanId: &planIdClusterScalingReq,
		ServiceId: &serviceIdClusterScalingReq,
	}
	response, err := client.UpdateClusterScaling(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

            

          

        
       

当Task节点个数大于零时，在MRS集群中扩容1个Task节点。

        
         
           
           
             package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    mrs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/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 := mrs.NewMrsClient(
        mrs.MrsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.UpdateClusterScalingRequest{}
	orderIdParameters:= ""
	nodeGroupParameters:= "task_node_default_group"
	skipBootstrapScriptsParameters:= "false"
	scaleWithoutStartParameters:= false
	parametersbody := &model.ClusterScalingParams{
		OrderId: &orderIdParameters,
		ScaleType: model.GetClusterScalingParamsScaleTypeEnum().SCALE_OUT,
		NodeId: "node_orderadd",
		NodeGroup: &nodeGroupParameters,
		SkipBootstrapScripts: &skipBootstrapScriptsParameters,
		ScaleWithoutStart: &scaleWithoutStartParameters,
		Instances: int32(1),
	}
	planIdClusterScalingReq:= ""
	serviceIdClusterScalingReq:= ""
	request.Body = &model.ClusterScalingReq{
		Parameters: parametersbody,
		PlanId: &planIdClusterScalingReq,
		ServiceId: &serviceIdClusterScalingReq,
	}
	response, err := client.UpdateClusterScaling(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

            

          

        
       

当Task节点个数大于零时，在MRS集群中扩容1个规格为s3.xlarge.2.linux.bigdata 的Task节点。

        
         
           
           
             package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    mrs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/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 := mrs.NewMrsClient(
        mrs.MrsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.UpdateClusterScalingRequest{}
	taskNodeInfoParameters := &model.TaskNodeInfo{
		NodeSize: "s3.xlarge.2.linux.bigdata",
		DataVolumeType: model.GetTaskNodeInfoDataVolumeTypeEnum().SATA,
		DataVolumeCount: int32(2),
		DataVolumeSize: int32(600),
	}
	orderIdParameters:= ""
	nodeGroupParameters:= "task_node_default_group"
	scaleWithoutStartParameters:= false
	parametersbody := &model.ClusterScalingParams{
		OrderId: &orderIdParameters,
		ScaleType: model.GetClusterScalingParamsScaleTypeEnum().SCALE_OUT,
		NodeId: "node_orderadd",
		NodeGroup: &nodeGroupParameters,
		ScaleWithoutStart: &scaleWithoutStartParameters,
		Instances: int32(1),
		TaskNodeInfo: taskNodeInfoParameters,
	}
	planIdClusterScalingReq:= ""
	serviceIdClusterScalingReq:= ""
	request.Body = &model.ClusterScalingReq{
		Parameters: parametersbody,
		PlanId: &planIdClusterScalingReq,
		ServiceId: &serviceIdClusterScalingReq,
	}
	response, err := client.UpdateClusterScaling(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

            

          

        
       

在MRS集群中缩容1个Core节点。

        
         
           
           
             package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    mrs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/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 := mrs.NewMrsClient(
        mrs.MrsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.UpdateClusterScalingRequest{}
	orderIdParameters:= ""
	nodeGroupParameters:= "core_node_default_group"
	parametersbody := &model.ClusterScalingParams{
		OrderId: &orderIdParameters,
		ScaleType: model.GetClusterScalingParamsScaleTypeEnum().SCALE_IN,
		NodeId: "node_orderadd",
		NodeGroup: &nodeGroupParameters,
		Instances: int32(1),
	}
	planIdClusterScalingReq:= ""
	serviceIdClusterScalingReq:= ""
	request.Body = &model.ClusterScalingReq{
		Parameters: parametersbody,
		PlanId: &planIdClusterScalingReq,
		ServiceId: &serviceIdClusterScalingReq,
	}
	response, err := client.UpdateClusterScaling(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

            

          

        
       

在MRS集群中缩容1个Task节点

        
         
           
           
             package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    mrs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/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 := mrs.NewMrsClient(
        mrs.MrsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.UpdateClusterScalingRequest{}
	orderIdParameters:= ""
	nodeGroupParameters:= "task_node_default_group"
	parametersbody := &model.ClusterScalingParams{
		OrderId: &orderIdParameters,
		ScaleType: model.GetClusterScalingParamsScaleTypeEnum().SCALE_IN,
		NodeId: "node_orderadd",
		NodeGroup: &nodeGroupParameters,
		Instances: int32(1),
	}
	planIdClusterScalingReq:= ""
	serviceIdClusterScalingReq:= ""
	request.Body = &model.ClusterScalingReq{
		Parameters: parametersbody,
		PlanId: &planIdClusterScalingReq,
		ServiceId: &serviceIdClusterScalingReq,
	}
	response, err := client.UpdateClusterScaling(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

            

          

        
       

在MRS集群中缩容指定的Task节点。

        
         
           
           
             package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    mrs "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/mrs/v1/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 := mrs.NewMrsClient(
        mrs.MrsClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.UpdateClusterScalingRequest{}
	var listServerIdsParameters = []string{
        "c9573435-7814-4b2c-9131-ad78b814414c",
	    "a4951009-6a0f-4e7b-9c81-9d4bd1f8c537",
    }
	orderIdParameters:= ""
	nodeGroupParameters:= "task_node_default_group"
	parametersbody := &model.ClusterScalingParams{
		OrderId: &orderIdParameters,
		ScaleType: model.GetClusterScalingParamsScaleTypeEnum().SCALE_IN,
		NodeId: "node_orderadd",
		NodeGroup: &nodeGroupParameters,
		ServerIds: &listServerIdsParameters,
		Instances: int32(2),
	}
	planIdClusterScalingReq:= ""
	serviceIdClusterScalingReq:= ""
	request.Body = &model.ClusterScalingReq{
		Parameters: parametersbody,
		PlanId: &planIdClusterScalingReq,
		ServiceId: &serviceIdClusterScalingReq,
	}
	response, err := client.UpdateClusterScaling(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

            

          

        
       

更多编程语言的SDK代码示例，请参见API Explorer的代码示例页签，可生成自动对应的SDK代码示例。

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200	扩容/缩容集群Core节点或者Task节点成功。

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