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
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
project_id |
是 |
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 |
是 |
String |
实例ID,严格匹配UUID规则。 |
请求参数
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
X-Auth-Token |
是 |
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 |
否 |
String |
请求语言类型。默认en-us。 取值范围:
|
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
priorities |
是 |
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 |
否 |
String |
创建包年/包月实例时可指定,表示是否自动从客户的账户中支付,此字段不影响自动续订的支付方式。
|
availability_zones |
否 |
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
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
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
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"); String projectId = "{project_id}"; ICredential auth = new BasicCredentials() .withProjectId(projectId) .withAk(ak) .withSk(sk); GaussDBClient client = GaussDBClient.newBuilder() .withCredential(auth) .withRegion(GaussDBRegion.valueOf("<YOUR REGION>")) .build(); CreateGaussMySqlReadonlyNodeRequest request = new CreateGaussMySqlReadonlyNodeRequest(); request.withInstanceId("{instance_id}"); 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"] projectId = "{project_id}" credentials = BasicCredentials(ak, sk, projectId) client = GaussDBClient.new_builder() \ .with_credentials(credentials) \ .with_region(GaussDBRegion.value_of("<YOUR REGION>")) \ .build() try: request = CreateGaussMySqlReadonlyNodeRequest() request.instance_id = "{instance_id}" 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") projectId := "{project_id}" auth := basic.NewCredentialsBuilder(). WithAk(ak). WithSk(sk). WithProjectId(projectId). Build() client := gaussdb.NewGaussDBClient( gaussdb.GaussDBClientBuilder(). WithRegion(region.ValueOf("<YOUR REGION>")). WithCredential(auth). Build()) request := &model.CreateGaussMySqlReadonlyNodeRequest{} request.InstanceId = "{instance_id}" 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。