小编rum*_*boy的帖子

我无需设置入口和出口规则，而是如何在 CloudFormation 模板中引用现有 EC2 安全组？

   Resources:
      EC2Instance:
        Type: AWS::EC2::Instance
        Properties:
          InstanceType:
            Ref: InstanceType
          SecurityGroups:
          - Ref: InstanceSecurityGroup
          KeyName:
            Ref: KeyName
          ImageId:
            Fn::FindInMap:
            - AWSRegionArch2AMI
            - Ref: AWS::Region
            - Fn::FindInMap:
              - AWSInstanceType2Arch
              - Ref: InstanceType
              - Arch
      InstanceSecurityGroup:
        Type: AWS::EC2::SecurityGroup
        Properties:
          GroupDescription: Existing Groups
          SecurityGroupIds:
          - Ref: sg-12345
          - Ref: sg-12312

  SecurityGroupIngress:
  - IpProtocol: tcp
    FromPort: 80
    ToPort: 80
    CidrIp: 0.0.0.0/0
  SecurityGroupEgress:
  - IpProtocol: tcp
    FromPort: 80
    ToPort: 80
    CidrIp: 0.0.0.0/0