java - 亚马逊 RDS : Launching "db.t1.micro" instances using the JAVA SDK

Question

我尝试使用 Java API 和以下代码在 Amazon RDS 上启动新的 MySql 实例:

CreateDBInstanceRequest createDBInstanceRequest = new CreateDBInstanceRequest();
createDBInstanceRequest.setEngine("MySQL");     
createDBInstanceRequest.setLicenseModel("general-public-license");
createDBInstanceRequest.setEngineVersion("5.5.25a");
createDBInstanceRequest.setDBInstanceClass("db.t1.micro");  
createDBInstanceRequest.setMultiAZ(false);
createDBInstanceRequest.setAutoMinorVersionUpgrade(true);
createDBInstanceRequest.setAllocatedStorage(5);  
createDBInstanceRequest.setDBInstanceIdentifier("mydbinstance");
createDBInstanceRequest.setMasterUsername("master");
createDBInstanceRequest.setMasterUserPassword("password");
createDBInstanceRequest.setDBName("dbname");
createDBInstanceRequest.setPort(3306);
createDBInstanceRequest.setDBParameterGroupName("default.mysql5.5");
createDBInstanceRequest.setDBSubnetGroupName("dev");
createDBInstanceRequest.setBackupRetentionPeriod(1);
DBInstance dbInstance = RDS.createDBInstance(createDBInstanceRequest);

问题是这总是会导致以下错误:

AWS Error Code: InsufficientDBInstanceCapacity, AWS Error Message: Cannot create a database instance because there is no availability zone with sufficient capacity. Please try your request again at a later time.

按照建议，我稍后尝试过，但始终无法以编程方式启动新实例，但当我尝试使用 Amazon Mgmt 控制台启动实例时，使用完全相同的参数，它会立即启动。

我还注意到，此问题仅发生在数据库实例类“db.t1.micro”上。该实例类无法通过 API 获得吗？

Answer 1

您确定您所在区域的任何可用区都提供此版本的 MySQL 吗？

我建议执行DescribeOrderableDBInstanceOptions首先针对您选择的引擎，使用您自己的标准进行过滤(例如 DBInstanceClass="db.t1.micro")，然后从中选择版本。