VPC error: Unresolved resource dependencies [VPC] in the Resources block of the template

Question

我正在使用 cloudformation 创建一个 vpc，但是当我运行它时它显示错误。我创建了带有互联网网关和 2 个子网的 vpc，一个是 public，另一个是私有的，但是当我将 yaml 文件上传到 cloudformation 时，它显示以下错误我的 yml 文件：

---
Description: An AWS VPC with two subnets.
AWSTemplateFormatVersion: 2010-09-09
Resources:
  myVPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 11.0.0.0/16
      EnableDnsSupport: true
      EnableDnsHostnames: true
      InstanceTenancy: default
  InternetGateway:
    Type: AWS::EC2::InternetGateway
  VPCGatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref myVPC
      InternetGatewayId: !Ref InternetGateway
  SubnetA:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: us-east-2a
      VpcId: !Ref myVPC
      CidrBlock: 11.0.1.0/24
      MapPublicIpOnLaunch: true
  SubnetB:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: us-east-2a
      VpcId: !Ref myVPC
      CidrBlock: 11.0.0.0/24
      MapPublicIpOnLaunch: false
  RouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref myVPC
  InternetRoute:
    Type: AWS::EC2::Route
    DependsOn: VPCGatewayAttachment
    Properties:
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway
      RouteTableId: !Ref RouteTable
  SubnetARouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref RouteTable
      SubnetId: !Ref SubnetA
  SubnetBRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref RouteTable
      SubnetId: !Ref SubnetB
  SecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupName: "Internet Group"
      GroupDescription: "SSH traffic in, all traffic out."
      VpcId: !Ref myVPC
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: "22"
          ToPort: "22"
          CidrIp: 0.0.0.0/0
      SecurityGroupEgress:
        - IpProtocol: -1
          CidrIp: 0.0.0.0/0
  InstanceSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Allow http to client host
      VpcId: !Ref myVPC
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0
        - IpProtocol: tcp
          FromPort: 22
          ToPort: 22
          CidrIp: 0.0.0.0/0
      SecurityGroupEgress:
        - IpProtocol: tcp
          FromPort: 80
          ToPort: 80
          CidrIp: 0.0.0.0/0

  RDSSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Allow http to client host
      VpcId: !Ref myVPC

  RDSSecurityGroupIngress:
    Type: AWS::EC2::SecurityGroupIngress
    Properties:
      GroupId: !Ref RDSSecurityGroup
      IpProtocol: tcp
      FromPort: 3306
      ToPort: 3306
      SourceSecurityGroupId: !Ref InstanceSecurityGroup

  myDBSubnetGroup:
    Type: "AWS::RDS::DBSubnetGroup"
    Properties:
      DBSubnetGroupDescription: "description"
      SubnetIds:
        - !Ref SubnetB

  wahajwebserver:
    Type: AWS::EC2::Instance
    Properties:
      ImageId: ami-0bdcc6c05dec346bf
      InstanceType: t2.micro
      KeyName: wahaj(webserver)
      SubnetId:
        Ref: SubnetA
      SecurityGroupIds: [!Ref InstanceSecurityGroup]

  wahajdbRDS:
    Type: AWS::RDS::DBInstance
    Properties:
      AllocatedStorage: 20
      AvailabilityZone: us-east-2c
      DBInstanceClass: db.t2.micro
      DBInstanceIdentifier: wahajwebserver
      DBName: wahajdb
      DBSubnetGroupName: !Ref myDBSubnetGroup
      DeleteAutomatedBackups: true
      Engine: MySQL
      MasterUsername: wahajdb
      MasterUserPassword: wahajdb
      VPCSecurityGroups: [!Ref RDSSecurityGroup]

我试过在cli中使用validate函数，但还是报错，无法找出错误。

Answer 1

您对 !Ref VPC 的引用应该是 !Ref myVPC。 !Ref VPC 期望存在名为 VPC 的参数或资源，您已将 VPC 资源命名为 myVPC.

---
Description: An AWS VPC with two subnets.
AWSTemplateFormatVersion: 2010-09-09
Resources:
  myVPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock: 11.0.0.0/16
      EnableDnsSupport: true
      EnableDnsHostnames: true
      InstanceTenancy: default
  InternetGateway:
    Type: AWS::EC2::InternetGateway
  VPCGatewayAttachment:
    Type: AWS::EC2::VPCGatewayAttachment
    Properties:
      VpcId: !Ref myVPC
      InternetGatewayId: !Ref InternetGateway
  SubnetA:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: us-east-2a
      VpcId: !Ref myVPC
      CidrBlock: 11.0.1.0/24
      MapPublicIpOnLaunch: true
  SubnetB:
    Type: AWS::EC2::Subnet
    Properties:
      AvailabilityZone: us-east-2a
      VpcId: !Ref myVPC
      CidrBlock: 11.0.0.0/24
      MapPublicIpOnLaunch: false
  RouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref myVPC
  InternetRoute:
    Type: AWS::EC2::Route
    DependsOn: VPCGatewayAttachment
    Properties:
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway
      RouteTableId: !Ref RouteTable
  SubnetARouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref RouteTable
      SubnetId: !Ref SubnetA
  SubnetBRouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      RouteTableId: !Ref RouteTable
      SubnetId: !Ref SubnetB
  SecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupName: "Internet Group"
      GroupDescription: "SSH traffic in, all traffic out."
      VpcId: !Ref myVPC
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: "22"
          ToPort: "22"
          CidrIp: 0.0.0.0/0
      SecurityGroupEgress:
        - IpProtocol: -1
          CidrIp: 0.0.0.0/0

VPC error: Unresolved resource dependencies [VPC] in the Resources block of the template

VPC error: Unresolved resource dependencies [VPC] in the Resources block of the template

subnet

amazon-web-services

amazon-cloudformation

amazon-vpc