在 yaml 模板中没有得到正确的输出答案

【问题标题】：Not getting proper outputs in yaml template在 yaml 模板中没有得到正确的输出
【发布时间】：2021-05-03 00:46:18
【问题描述】：

可以在此模板中进行哪些更改，以便此模板适用于所有场景。对于 1 AZ 和 PrivateSubnets：False，对于 1 AZ 和 PrivateSubnets：True，对于 2 AZ 和 PrivateSubnets：False，对于 AZ 和 PrivateSubnets：True

---
AWSTemplateFormatVersion: '2010-09-09'
Description: 'Amazon EKS Sample VPC - Private and Public subnets'

Metadata:
  AWS::CloudFormation::Interface:
    ParameterGroups:
      -
        Label:
          default: "Worker Network Configuration"
        Parameters:
          - VpcCidr
          - PublicSubnet01Block
          - PublicSubnet02Block
          - PrivateSubnet01Block
          - PrivateSubnet02Block
          - NumberOfAZs
          - PrivateSubnets

Parameters:
  PrivateSubnets:
    Type: String
    AllowedValues: 
    -  True
    -  False
    Default: True
    Description: Do you want to create private subnets in addition to public subnets?

  NumberOfAZs:
    Type: Number
    AllowedValues: 
    - 1
    - 2
    - 3
    Default: 1
    Description:  How many Availability Zones do you wish to utilize? 

  VpcCidr:
    Type: String
    Default: 192.168.0.0/16
    AllowedValues:
      - 10.0.0.0/16
      - 192.168.0.0/16
    Description: The CIDR range for the VPC. This should be a valid private (RFC 1918) CIDR range.

 
Conditions:
  BuildPublic02:         !Not [ !Equals [ !Ref NumberOfAZs, 1 ]]    
  BuildPrivateSubnets:  !Equals [ !Ref PrivateSubnets, True ] 
  BuildPrivate01:        !Equals [ !Ref PrivateSubnets, True ]       # Can't determine how to build a condition from a separate single condition
  BuildPrivate02:        !And [ Condition: BuildPrivateSubnets, Condition: BuildPublic02 ]

Resources:
  VPC:
    Type: AWS::EC2::VPC
    Properties:
      CidrBlock:  !Ref VpcCidr
      EnableDnsSupport: true
      EnableDnsHostnames: true
      Tags:
      - Key: Name
        Value: !Sub '${AWS::StackName}-VPC'

  InternetGateway:
    Type: "AWS::EC2::InternetGateway"

  VPCGatewayAttachment:
    Type: "AWS::EC2::VPCGatewayAttachment"
    Properties:
      InternetGatewayId: !Ref InternetGateway
      VpcId: !Ref VPC

  PublicRouteTable:
    Type: AWS::EC2::RouteTable
    Properties:
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: Public Subnets
      - Key: Network
        Value: Public

  PrivateRouteTable01:
    Type: AWS::EC2::RouteTable
    Condition: BuildPrivate01
    Properties:
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: Private Subnet AZ1
      - Key: Network
        Value: Private01

  PrivateRouteTable02:
    Type: AWS::EC2::RouteTable
    Condition: BuildPrivate02
    Properties:
      VpcId: !Ref VPC
      Tags:
      - Key: Name
        Value: Private Subnet AZ2
      - Key: Network
        Value: Private02

  PublicRoute:
    DependsOn: VPCGatewayAttachment
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref PublicRouteTable
      DestinationCidrBlock: 0.0.0.0/0
      GatewayId: !Ref InternetGateway

  PrivateRoute01:
    Condition: BuildPrivate01
    DependsOn:
    - VPCGatewayAttachment
    - NatGateway01
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref PrivateRouteTable01
      DestinationCidrBlock: 0.0.0.0/0
      NatGatewayId: !Ref NatGateway01

  PrivateRoute02:
    Condition: BuildPrivate02
    DependsOn:
    - VPCGatewayAttachment
    - NatGateway02
    Type: AWS::EC2::Route
    Properties:
      RouteTableId: !Ref PrivateRouteTable02
      DestinationCidrBlock: 0.0.0.0/0
      NatGatewayId: !Ref NatGateway02

  NatGateway01:
    Condition: BuildPrivate01
    DependsOn:
    - NatGatewayEIP1
    - PublicSubnet01
    - VPCGatewayAttachment
    Type: AWS::EC2::NatGateway
    Properties:
      AllocationId: !GetAtt 'NatGatewayEIP1.AllocationId'
      SubnetId: !Ref PublicSubnet01
      Tags:
      - Key: Name
        Value: !Sub '${AWS::StackName}-NatGatewayAZ1'

  NatGateway02:
    Condition: BuildPrivate02
    DependsOn:
    - NatGatewayEIP2
    - PublicSubnet02
    - VPCGatewayAttachment
    Type: AWS::EC2::NatGateway
    Properties:
      AllocationId: !GetAtt 'NatGatewayEIP2.AllocationId'
      SubnetId: !Ref PublicSubnet02
      Tags:
      - Key: Name
        Value: !Sub '${AWS::StackName}-NatGatewayAZ2'

  NatGatewayEIP1:
    Condition: BuildPrivate01
    DependsOn:
    - VPCGatewayAttachment
    Type: 'AWS::EC2::EIP'
    Properties:
      Domain: vpc

  NatGatewayEIP2:
    Condition: BuildPrivate02
    DependsOn:
    - VPCGatewayAttachment
    Type: 'AWS::EC2::EIP'
    Properties:
      Domain: vpc

  PublicSubnet01:
    Type: AWS::EC2::Subnet
    Metadata:
      Comment: Subnet 01
    Properties:
      MapPublicIpOnLaunch: true
      AvailabilityZone:
        Fn::Select:
        - '0'
        - Fn::GetAZs:
            Ref: AWS::Region
      CidrBlock: !Select [ 0, !Cidr [ !GetAtt VPC.CidrBlock, 4, 12 ]]
      VpcId:
        Ref: VPC
      Tags:
      - Key: Name
        Value: !Sub "${AWS::StackName}-PublicSubnet01"
      - Key: kubernetes.io/role/elb
        Value: 1

  PublicSubnet02:
    Type: AWS::EC2::Subnet
    Condition: BuildPublic02
    Metadata:
      Comment: Subnet 02
    Properties:
      MapPublicIpOnLaunch: true
      AvailabilityZone:
        Fn::Select:
        - '1'
        - Fn::GetAZs:
            Ref: AWS::Region
      CidrBlock: !Select [ 1, !Cidr [ !GetAtt VPC.CidrBlock, 4, 12 ]]
      VpcId:
        Ref: VPC
      Tags:
      - Key: Name
        Value: !Sub "${AWS::StackName}-PublicSubnet02"
      - Key: kubernetes.io/role/elb
        Value: 1

  PrivateSubnet01:
    Type: AWS::EC2::Subnet
    Condition: BuildPrivate01
    Metadata:
      Comment: Subnet 01
    Properties:
      AvailabilityZone:
        Fn::Select:
        - '0'
        - Fn::GetAZs:
            Ref: AWS::Region
      CidrBlock: !Select [ 2, !Cidr [ !GetAtt VPC.CidrBlock, 4, 12 ]]
      VpcId:
        Ref: VPC
      Tags:
      - Key: Name
        Value: !Sub "${AWS::StackName}-PrivateSubnet01"
      - Key: kubernetes.io/role/internal-elb
        Value: 1

  PrivateSubnet02:
    Type: AWS::EC2::Subnet
    Condition: BuildPrivate02
    Metadata:
      Comment: Private Subnet 02
    Properties:
      AvailabilityZone:
        Fn::Select:
        - '1'
        - Fn::GetAZs:
            Ref: AWS::Region
      CidrBlock: !Select [ 3, !Cidr [ !GetAtt VPC.CidrBlock, 4, 12 ]]
      VpcId:
        Ref: VPC
      Tags:
      - Key: Name
        Value: !Sub "${AWS::StackName}-PrivateSubnet02"
      - Key: kubernetes.io/role/internal-elb
        Value: 1

  PublicSubnet01RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Properties:
      SubnetId: !Ref PublicSubnet01
      RouteTableId: !Ref PublicRouteTable

  PublicSubnet02RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Condition: BuildPublic02
    Properties:
      SubnetId: !Ref PublicSubnet02
      RouteTableId: !Ref PublicRouteTable

  PrivateSubnet01RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Condition: BuildPrivate01
    Properties:
      SubnetId: !Ref PrivateSubnet01
      RouteTableId: !Ref PrivateRouteTable01

  PrivateSubnet02RouteTableAssociation:
    Type: AWS::EC2::SubnetRouteTableAssociation
    Condition: BuildPrivate02
    Properties:
      SubnetId: !Ref PrivateSubnet02
      RouteTableId: !Ref PrivateRouteTable02

  ControlPlaneSecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: Cluster communication with worker nodes
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: 0
          ToPort: 65535
          CidrIp: 0.0.0.0/0
      VpcId: !Ref VPC

Outputs:

  SubnetIds:
    Description: Private Subnets IDs in the VPC
    Condition: BuildPublic02
    Condition: BuildPrivateSubnets
    Condition: BuildPrivate01
    Condition: BuildPrivate02
    Value: !Join [ ",", [ !Ref PublicSubnet01, !Ref PublicSubnet02, !Ref PrivateSubnet01, !Ref PrivateSubnet02 ] ]



  PublicSubnetIds:
    Condition: BuildPublic02
    Description: Public Subnets IDs in the VPC
    Value: !Join [ ",", [ !Ref PublicSubnet01, !Ref PublicSubnet02 ] ]

  PrivateSubnetIds:
    Description: Public Subnets IDs in the VPC
    Condition: BuildPrivateSubnets
    Condition: BuildPrivate01
    Condition: BuildPrivate02
    Value: !Join [ ",", [ !Ref PrivateSubnet01, !Ref PrivateSubnet02 ] ]

  SecurityGroups:
    Description: Security group for the cluster control plane communication with worker nodes
    Value: !Join [ ",", [ !Ref ControlPlaneSecurityGroup ] ]

  VpcId:
    Description: The VPC Id
    Value: !Ref VPC

This template is working fine when the parameters chosen are 2AZs and PrivateSubnets: True where as for other parameters this template isn't working fine, the outputs are not being generated as expected. 可以进行哪些必要的更改以使其适用于所有类型的参数？

【问题讨论】：

嗨。我还注意到您有很多问题的答案，但没有一个被接受。如果所有答案都无用，那很好，通常需要评论来解释为什么答案没有帮助。但是，如果某些答案有帮助，那么接受它们是一种很好的做法。它会限制重复问题的数量并将您的问题从unanswered 问题列表中删除。
@Marcin 真的很抱歉，我可能忽略了它。您的回答非常有价值，对我帮助很大。我一定会感谢您的所有回答。
没问题。很高兴Outputs 现在可以工作了。

标签： amazon-web-services yaml amazon-cloudformation amazon-vpc amazon-eks

【解决方案1】：

Output 部分应如下所示。另请注意，您的模板仅适用于 1 和 2 个 AZ，而不适用于 NumberOfAZs 参数中的 3 个 Az。所以你也可以改变它：

  NumberOfAZs:
    Type: Number
    AllowedValues: [1,2]
    Default: 1
    Description:  How many Availability Zones do you wish to utilize?

还有Outputs：

Outputs:

  SubnetIds:
    Description: All Subnets IDs in the VPC
    Value: 
      !Join 
        - ","
        - - !Ref PublicSubnet01
          - !If [BuildPublic02, !Ref PublicSubnet02, !Ref "AWS::NoValue"]
          - !If [BuildPrivate01, !Ref PrivateSubnet01, !Ref "AWS::NoValue"]
          - !If [BuildPrivate02, !Ref PrivateSubnet02, !Ref "AWS::NoValue"]          

  PublicSubnetIds:
    Description: Public Subnets IDs in the VPC
    Value: 
      !Join 
        - ","
        - - !Ref PublicSubnet01
          - !If [BuildPublic02, !Ref PublicSubnet02, !Ref "AWS::NoValue"]      

  PrivateSubnetIds:
    Description: Private Subnets IDs in the VPC
    Condition: BuildPrivateSubnets
    Value: 
      !Join 
        - ","
        - - !Ref PrivateSubnet01
          - !If [BuildPrivate02, !Ref PrivateSubnet02, !Ref "AWS::NoValue"]          

  SecurityGroups:
    Description: Security group for the cluster control plane communication with worker nodes
    Value: !Join [ ",", [ !Ref ControlPlaneSecurityGroup ] ]

  VpcId:
    Description: The VPC Id
    Value: !Ref VPC

【讨论】：