CloudFormation 模板中待纠正的错误

如何解决CloudFormation 模板中待纠正的错误

我的应用程序负载均衡器的 AWS CloudFormation 模板抛出此错误：无法检索外部值。 需要帮助来纠正这个问题。我不确定错误是从哪里发生的。 我猜错误可能出在证书参数部分或标签中，也许 !Sub 值没有包含在该值中。

AWstemplateFormatVersion: '2010-09-09'

Parameters:
  Name: 
    Description: Name of the project
    Type: String
  EnvironmentName: 
    Description: Environment of the Application Load balancer
    Type: String
  Publicsubnet:
    Description: subnet for creating the Application Load balancer
    Type: List<AWS::EC2::subnet::Id>
  Vpc:
    Description: VPC in which the resources are present
    Type: AWS::EC2::VPC::Id
  Certificate: 
    Description: Arn of the ssl certificate for HTTPS listener
    Type: AWS::CertificateManager::Certificate::Arn

Resources:
  SecurityGroup:
    Type: AWS::EC2::SecurityGroup
    Properties:
      GroupDescription: ALB Security Group
      VpcId: !Ref Vpc
      SecurityGroupIngress:
        - IpProtocol: tcp
          FromPort: "80"
          ToPort: "80"
          CidrIp: "0.0.0.0/0"
        - IpProtocol: tcp
          FromPort: "443"
          ToPort: "443"
          CidrIp: "0.0.0.0/0"
      Tags:
        -
          Key: Name
          Value: !Sub ${EnvironmentName}-SG

  ApplicationLB:
    Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
    Properties:
      IpAddresstype: ipv4
      Name: Test-ALB
      Scheme: internet-facing 
      SecurityGroups:
        - !Ref SecurityGroup
      subnets: !Ref Publicsubnet  
      Tags:
        - Key: Name
          Value: !Sub ${EnvironmentName}-ALB
      Type: application
  HTTPSListener:
    Type: "AWS::ElasticLoadBalancingV2::Listener"
    Properties:
      LoadBalancerArn: !Ref ApplicationLB
      Port: 443
      Protocol: "HTTPS"
      SslPolicy: "ELBSecurityPolicy-2016-08"
      Certificates: 
        - 
          CertificateArn: !Ref Certificate
      DefaultActions: 
        - 
          Order: 1
          Type: "fixed-response"
          FixedResponseConfig:
            ContentType: "text/plain"
            MessageBody: "Please enter proper domain"
            StatusCode: "200"
  HTTPListener:
    Type: "AWS::ElasticLoadBalancingV2::Listener"
    Properties:
      LoadBalancerArn: !Ref ApplicationLB
      Port: 80
      Protocol: "HTTP"
      DefaultActions: 
        - 
          Order: 1
          RedirectConfig: 
            Protocol: "HTTPS"
            Port: "443"
            Host: "#{host}"
            Path: "/#{path}"
            Query: "#{query}"
            StatusCode: "HTTP_301"
          Type: "redirect"
  ALBTargetGroup:
    Type: 'AWS::ElasticLoadBalancingV2::TargetGroup'
    Properties:
      HealthCheckIntervalSeconds: 30
      HealthCheckTimeoutSeconds: 5
      HealthyThresholdCount: 3
      Port: 80
      Protocol: HTTP
      UnhealthyThresholdCount: 5
      VpcId: !Ref Vpc

需要澄清。

解决方法

该错误与证书参数中提到的类型有关。

将其更改为如下字符串，并将证书 Arn 作为值传递。

Certificate: 
    Description: Arn of the ssl certificate for HTTPS listener
    Type: String

示例参数.json 文件

[
  {
    "ParameterKey": "EnvironmentName","ParameterValue": "dev"
  },{
    "ParameterKey": "Name","ParameterValue": "stackoverflow"
  },{
    "ParameterKey": "Vpc","ParameterValue": "vpc-0e104f6ad273a6648"
  },{
    "ParameterKey": "PublicSubnet","ParameterValue": "subnet-0c2fc6571a7a6db2e,subnet-05a36fdef379c4fcd"
  },{
    "ParameterKey": "Certificate","ParameterValue": "arn:aws:acm:us-east-1:111111111111:certificate/11ad06f1-b625-44b2-9797-4ecd81451af2"
  }

]