json - AWS CloudFormation 网络接口(interface)错误

Question

每当启动堆栈时，我都会收到此错误

(Network interfaces and an instance-level security groups may not be specified on the same request (Service: AmazonEC2; Status Code: 400; Error Code: InvalidParameterCombination; Request ID:....))

Aws 控制台 中的状态为:ROLLBACK_COMPLETE

如何解决这个错误？

EC2Instance:
Type: 'AWS::EC2::Instance'
Properties:
  SecurityGroups: 
    - !Ref SecurityGroup
  KeyName : !Ref EC2Key
  AvailabilityZone: us-east-2a
  ImageId: ami-01410f0e8f8b1acca
  InstanceType: t2.micro
  NetworkInterfaces:
    - DeviceIndex: '0'
      SubnetId: !Ref PublicSubnet

Answer 1

您想要指定网络接口(interface)有什么具体原因吗？

如果您需要完成的只是将实例部署到特定子网中，只需删除 NetworkInterfaces 部分并为实例本身指定子网即可。

EC2Instance:
Type: 'AWS::EC2::Instance'
Properties:
  SecurityGroups: 
    - !Ref SecurityGroup
  KeyName : !Ref EC2Key
  AvailabilityZone: us-east-2a
  ImageId: ami-01410f0e8f8b1acca
  InstanceType: t2.micro
  SubnetId: !Ref PublicSubnet