更新时间:2024-06-13 GMT+08:00
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指定节点类型缩容

功能介绍

该接口用于集群对不同类型实例的个数以及存储容量进行缩容。包周期类型的集群不支持通过api进行指定节点类型缩容操作。

调用方法

请参见如何调用API

URI

POST /v1.0/extend/{project_id}/clusters/{cluster_id}/role/shrink

表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

项目ID。获取方法请参见获取项目ID和名称

cluster_id

String

指定待缩容的集群ID。

请求参数

表2 请求Body参数

参数

是否必选

参数类型

描述

shrink

Array of ShrinkNodeReq objects

需要缩容的节点类型和数量集合。

表3 ShrinkNodeReq

参数

是否必选

参数类型

描述

reducedNodeNum

Integer

需要缩容的节点数量。

  • 对节点缩容后,请确保每个节点类型在每个AZ中的数量至少为1。

  • 关于跨AZ的集群,在不同AZ中同类型节点个数的差值要小于等于1。

  • 关于没有Master节点的集群,每次缩容的数据节点个数(包含冷数据节点和其他类型节点)要小于当前数据节点总数的一半,缩容后的数据节点个数要大于索引的最大副本个数。

  • 关于有Master节点的集群,每次缩容的Master节点个数要小于当前Master节点总数的一半,缩容后的Master节点个数必须是奇数且不小于3。

type

String

指定节点类型。

  • ess:数据节点。

  • ess-cold:冷数据节点。

  • ess-client:Client节点。

  • ess-master:Master节点。

响应参数

请求示例

缩容集群,通过指定当前节点类型缩容。

POST /v1.0/6204a5bd270343b5885144cf9c8c158d/clusters/4f3deec3-efa8-4598-bf91-560aad1377a3/role/shrink

{
  "shrink" : [ {
    "type" : "ess",
    "reducedNodeNum" : 1
  } ]
}

响应示例

SDK代码示例

SDK代码示例如下。

缩容集群,通过指定当前节点类型缩容。

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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.css.v1.region.CssRegion;
import com.huaweicloud.sdk.css.v1.*;
import com.huaweicloud.sdk.css.v1.model.*;

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

public class UpdateShrinkClusterSolution {

    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);

        CssClient client = CssClient.newBuilder()
                .withCredential(auth)
                .withRegion(CssRegion.valueOf("<YOUR REGION>"))
                .build();
        UpdateShrinkClusterRequest request = new UpdateShrinkClusterRequest();
        ShrinkClusterReq body = new ShrinkClusterReq();
        List<ShrinkNodeReq> listbodyShrink = new ArrayList<>();
        listbodyShrink.add(
            new ShrinkNodeReq()
                .withReducedNodeNum(1)
                .withType("ess")
        );
        body.withShrink(listbodyShrink);
        request.withBody(body);
        try {
            UpdateShrinkClusterResponse response = client.updateShrinkCluster(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());
        }
    }
}

缩容集群,通过指定当前节点类型缩容。

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkcss.v1.region.css_region import CssRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkcss.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.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]

    credentials = BasicCredentials(ak, sk)

    client = CssClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(CssRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = UpdateShrinkClusterRequest()
        listShrinkbody = [
            ShrinkNodeReq(
                reduced_node_num=1,
                type="ess"
            )
        ]
        request.body = ShrinkClusterReq(
            shrink=listShrinkbody
        )
        response = client.update_shrink_cluster(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

缩容集群,通过指定当前节点类型缩容。

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package main

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

    request := &model.UpdateShrinkClusterRequest{}
	var listShrinkbody = []model.ShrinkNodeReq{
        {
            ReducedNodeNum: int32(1),
            Type: "ess",
        },
    }
	request.Body = &model.ShrinkClusterReq{
		Shrink: listShrinkbody,
	}
	response, err := client.UpdateShrinkCluster(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。

状态码

状态码

描述

200

请求已成功。

400

非法请求。

建议直接修改该请求,不要重试该请求。

409

服务器在完成请求时发生冲突。

返回该状态码,表明客户端尝试创建的资源已经存在,或者由于冲突请求的更新操作不能被完成。

412

未满足前提条件,服务器未满足请求者在请求中设置的其中一个前提条件。

错误码

请参见错误码

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