Question

我是CloudFormation的新手。我的任务是创建一个Aurora数据库集群。问题是，我在执行CloudFormation模板后遇到以下错误。

嵌入式堆栈 ARN：AWS：cloudformation：EU-西-2：232313142384：堆叠/测试deploy4-数据库-1INKI7L337Z6X / 57a8ad10-123c-11e8-81aa-504dcd6ad3ba 未成功创建：以下资源未能成功创建：[DatabaseCluster]。

以下是CloudFormation模板

--- AWSTemplateFormatVersion: 2010-09-09 Description: A basic CloudFormation template for an RDS Aurora cluster. Parameters:
    DatabaseInstanceType:
        Default: db.r3.large
        AllowedValues:
            - db.r3.large
            - db.r3.xlarge
            - db.r3.2xlarge
            - db.r3.4xlarge
            - db.r3.8xlarge
        Description: The instance type to use for the database.
        Type: String
    DatabasePassword:
        ConstraintDescription: must contain only alphanumeric characters.
        Description: The database admin account password.
        MaxLength: '41'
        MinLength: '8'
        NoEcho: 'true'
        Type: String
    DatabaseUsername:
        ConstraintDescription: must contain only alphanumeric characters.
        Description: The database admin account user name.
        MaxLength: '16'
        MinLength: '1'
        Type: String
    DatabaseBackupRetentionPeriod:
        Type: String
        Default: 7
        AllowedValues:
            - 1
            - 7
        Description: The database backup retention period in days.
    DatabaseSubnets:
        Description: The subnets to place database instances in.
        Type: List<AWS::EC2::Subnet::Id>
    DatabaseSecurityGroups:
        Type: List<AWS::EC2::SecurityGroup::Id>
        Description: Security groups to apply to the RDS cluster. Metadata:
    AWS::CloudFormation::Interface:
        ParameterGroups:
            - Label:
                default: Database Configuration
              Parameters:
                - DatabaseInstanceType
                - DatabaseName
                - DatabaseUsername
                - DatabasePassword
                - DatabaseSubnets
                - DatabaseSecurityGroups
                - DatabaseBackupRetentionPeriod
        ParameterLabels:
            DatabaseInstanceType:
                default: Database Instance Type
            DatabasePassword:
                default: Database Password
            DatabaseUsername:
                default: Database Username
            DatabaseBackupRetentionPeriod:
                default: Database Backup Retention Period
            DatabaseSubnets:
                default: Database Subnets
            DatabaseSecurityGroups:
                default: Database Security Groups Resources:
    DatabaseSubnetGroup:
        Type: AWS::RDS::DBSubnetGroup
        Properties:
            DBSubnetGroupDescription: CloudFormation managed DB subnet group.
            SubnetIds:
                Ref: DatabaseSubnets
    DatabaseCluster:
        Type: AWS::RDS::DBCluster
        Properties:
            Engine: aurora
            MasterUsername:
                Ref: DatabaseUsername
            MasterUserPassword:
                Ref: DatabasePassword
            BackupRetentionPeriod:
                Ref: DatabaseBackupRetentionPeriod
            PreferredBackupWindow: 02:00-03:00
            PreferredMaintenanceWindow: mon:03:00-mon:04:00
            DBSubnetGroupName:
                Ref: DatabaseSubnetGroup
            VpcSecurityGroupIds:
                Ref: DatabaseSecurityGroups
    DatabasePrimaryInstance:
        Type: AWS::RDS::DBInstance
        Properties:
            Engine: aurora
            DBClusterIdentifier:
                Ref: DatabaseCluster
            DBInstanceClass:
                Ref: DatabaseInstanceType
            DBSubnetGroupName:
                Ref: DatabaseSubnetGroup

除了此错误消息之外没有其他消息，这不会告诉我失败的真正原因。任何人都可以帮我理解如何调试它？

我正在附上状态屏幕的屏幕截图：

Answer 1

因此，首先，如果您通过AWS控制台创建堆栈，请在选项 - ＆gt;高级 - ＆gt;失败时回滚时关闭失败时回滚选项。设置回滚失败到“否”＃39;。然后，当堆栈创建失败时，您可以看到堆栈数据库。我将名称数据库称为引用，但该堆栈名称可能不是＆＃34;数据库＆＃34;。堆栈名称可能是MasterStackID和此名称＆＃39;数据库＆＃39;的组合。在该数据库堆栈中，您可以在资源＆＃34; DatabaseCluster＆＃34;中找到该堆栈失败的原因。这里发生的是当你尝试检查错误时，失败的堆栈被删除了。所以你找不到主要的错误。尝试通过关闭“失败时回滚”来创建堆栈。然后你可以看到数据库堆栈中的错误。希望有所帮助！

无法创建Aurora数据库群集

1 个答案: