Question

我正在尝试创建一个具有几个子网，安全组和Internet网关的VPC。我收到错误“模板格式错误：无法解析的资源依赖项[VPCSubnet03]”

这是我的.yml文件的一部分

Parameters:
  Subnet03CIDRBlock:
     Type: String
     Description: CIDR Block range for the public subnet 03 in the VPC if the region has more than 2 Availability Zones.


Conditions:
  Has2Azs:
    Fn::Or:
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - us-west-2
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - us-east-1
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - me-south-1
  
  HasMore:
    Fn::Not:
      - Condition: Has2Azs

Resources:
   VPCSubnet03:
      Condition: HasMore
      Type: AWS::EC2::Subnet
      Properties:
          VpcId: !Ref VPC
          CidrBlock: !Ref Subnet03CIDRBlock
          AvailabilityZone: !Select [ 2, !GetAZs '' ]
          Tags:
              - Key: Name
                Value: !Sub "${ProjectName}-Subnet03CIDRBlock"

供参考，这也是我的.json参数文件

[{
   "ParameterKey": "Subnet03CIDRBlock",
   "ParameterValue": "192.168.3.0/24"
},
{
   "ParameterKey": "ProjectName",
   "ParameterValue": "GreenBlueDeployment"
}]

我在Google上搜索了一段时间，不知道该如何解决。 AFAIK，定义了VPCSubnet03中的所有依赖项。

编辑：我在VPCSubnet03的定义中建立了一个条件，但是忘记在相应的关联路由表资源中添加相同的条件。现在正在创建堆栈！

在更新我的.yml文件后，最终示例如下所示：

Parameters:
  Subnet03CIDRBlock:
     Type: String
     Description: CIDR Block range for the public subnet 03 in the VPC if the region has more than 2 Availability Zones.


Conditions:
  Has2Azs:
    Fn::Or:
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - us-west-2
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - us-east-1
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - me-south-1

  HasMore:
    Fn::Not:
      - Condition: Has2Azs

Resources:
   VPCSubnet03:
      Condition: HasMore
      Type: AWS::EC2::Subnet
      Properties:
          VpcId: !Ref VPC
          CidrBlock: !Ref Subnet03CIDRBlock
          AvailabilityZone: !Select [ 2, !GetAZs '' ]
          Tags:
              - Key: Name
                Value: !Sub "${ProjectName}-Subnet03CIDRBlock"

   Subnet03RouteTableAssociation:
      Condition: HasMore
      Type: AWS::EC2::SubnetRouteTableAssociation
      Properties:
          SubnetId: !Ref VPCSubnet03
          RouteTableId: !Ref RouteTable

再次感谢您的帮助！

Answer 1

建议尝试在CloudFormation Linter中的VSCode中查看更多详细的内联错误：

需要在完整模板上运行cfn-lint才能确定

Answer 2

您的模板缺少ProjectName和VPC参数。因此应该是：

Parameters:

  Subnet03CIDRBlock:
     Type: String
     Description: CIDR Block range for the public subnet 03 in the VPC if the region has more than 2 Availability Zones.

  ProjectName:
     Type: String
     Default: my-project-name

  VPC:
     Type: AWS::EC2::VPC::Id  


Conditions:
  Has2Azs:
    Fn::Or:
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - us-west-2
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - us-east-1
      - Fn::Equals:
        - {Ref: 'AWS::Region'}
        - me-south-1
  
  HasMore:
    Fn::Not:
      - Condition: Has2Azs

Resources:


   VPCSubnet03:
      Condition: HasMore
      Type: AWS::EC2::Subnet
      Properties:
          VpcId: !Ref VPC
          CidrBlock: !Ref Subnet03CIDRBlock
          AvailabilityZone: !Select [ 2, !GetAZs '' ]
          Tags:
              - Key: Name
                Value: !Sub "${ProjectName}-Subnet03CIDRBlock"

解决了AWS CloudFormation创建堆栈。未解决的资源依赖性

2 个答案: