更新时间:2024-06-07 GMT+08:00
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创建只读节点

功能介绍

创建只读节点。

调用方法

请参见如何调用API

URI

POST /v3/{project_id}/instances/{instance_id}/nodes/enlarge

表1 路径参数

参数

是否必选

参数类型

描述

project_id

String

租户在某一Region下的project ID。

获取方法请参见获取项目ID

instance_id

String

实例ID,严格匹配UUID规则。

请求参数

表2 请求Header参数

参数

是否必选

参数类型

描述

X-Auth-Token

String

用户Token。

通过调用IAM服务获取用户Token接口获取。

请求响应成功后在响应消息头中包含的“X-Subject-Token”的值即为Token值。

X-Language

String

请求语言类型。默认en-us。 取值范围:

  • en-us

  • zh-cn

表3 请求Body参数

参数

是否必选

参数类型

描述

priorities

Array of integers

指定创建的只读节点故障倒换优先级。

故障倒换优先级的取值范围为1~16,数字越小,优先级越大,即故障倒换时,主节点会优先倒换到优先级高的只读节点上,优先级相同的只读节点选为主节点的概率相同。最多支持9个只读节点设置故障倒换优先级,超过9个的只读节点优先级默认为-1,表示不会参与倒换。可通过修改节点的故障倒换优先级来进行调整。

is_auto_pay

String

创建包年/包月实例时可指定,表示是否自动从客户的帐户中支付,此字段不影响自动续订的支付方式。

  • true:为自动支付,默认该方式。

  • false:为手动支付。

availability_zones

Array of strings

可用区。可指定可用区创建只读节点,不传该参数时默认为自动选择可用区。

该参数目前处于公测阶段,如需使用,请提交工单联系客服人员申请权限。

调用查询数据库规格获取,其中az_status中的key为availability_zone。

注:指定可用区创建只读节点,可能由于资源不足创建失败。

响应参数

状态码: 201

表4 响应Body参数

参数

参数类型

描述

instance_id

String

实例ID,严格匹配UUID规则。

node_names

Array of strings

节点名称列表。

job_id

String

创建只读节点的任务ID。

仅创建按需只读节点时会返回该参数。

order_id

String

订单号,创建包年包月只读节点时返回该参数。

状态码: 400

表5 响应Body参数

参数

参数类型

描述

error_code

String

错误码。

error_msg

String

错误消息。

状态码: 500

表6 响应Body参数

参数

参数类型

描述

error_code

String

错误码。

error_msg

String

错误消息。

请求示例

为实例创建只读节点。

POST https://{endpoint}/v3/054e292c9880d4992f02c0196d3ea468/instances/8cb89e25e0444f1fa9b2145dff29cabdin07/nodes/enlarge

{
  "priorities" : [ 1, 2 ]
}

响应示例

状态码: 201

Success.

{
  "instance_id" : "8cb89e25e0444f1fa9b2145dff29cabdin07",
  "node_names" : [ "gauss-ccf5_node03", "gauss-ccf5_node04" ],
  "job_id" : "dff1d289-4d03-4942-8b9f-463ea07c000d"
}

SDK代码示例

SDK代码示例如下。

为实例创建只读节点。

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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.gaussdb.v3.region.GaussDBRegion;
import com.huaweicloud.sdk.gaussdb.v3.*;
import com.huaweicloud.sdk.gaussdb.v3.model.*;

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

public class CreateGaussMySqlReadonlyNodeSolution {

    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);

        GaussDBClient client = GaussDBClient.newBuilder()
                .withCredential(auth)
                .withRegion(GaussDBRegion.valueOf("<YOUR REGION>"))
                .build();
        CreateGaussMySqlReadonlyNodeRequest request = new CreateGaussMySqlReadonlyNodeRequest();
        MysqlCreateReadonlyNodeRequest body = new MysqlCreateReadonlyNodeRequest();
        List<Integer> listbodyPriorities = new ArrayList<>();
        listbodyPriorities.add(1);
        listbodyPriorities.add(2);
        body.withPriorities(listbodyPriorities);
        request.withBody(body);
        try {
            CreateGaussMySqlReadonlyNodeResponse response = client.createGaussMySqlReadonlyNode(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());
        }
    }
}

为实例创建只读节点。

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkgaussdb.v3.region.gaussdb_region import GaussDBRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkgaussdb.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"]

    credentials = BasicCredentials(ak, sk)

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

    try:
        request = CreateGaussMySqlReadonlyNodeRequest()
        listPrioritiesbody = [
            1,
            2
        ]
        request.body = MysqlCreateReadonlyNodeRequest(
            priorities=listPrioritiesbody
        )
        response = client.create_gauss_my_sql_readonly_node(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

为实例创建只读节点。

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    gaussdb "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/v3/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/gaussdb/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")

    auth := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        Build()

    client := gaussdb.NewGaussDBClient(
        gaussdb.GaussDBClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateGaussMySqlReadonlyNodeRequest{}
	var listPrioritiesbody = []int32{
        int32(1),
	    int32(2),
    }
	request.Body = &model.MysqlCreateReadonlyNodeRequest{
		Priorities: listPrioritiesbody,
	}
	response, err := client.CreateGaussMySqlReadonlyNode(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

201

Success.

400

Client error.

500

Server error.

错误码

请参见错误码

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