Serverless Framework ALB Resource

serverless.yml

resources:
  Resources:    
    ############
    # ALB Resources
    ############
    ALBSecurityGroup:
      Type: AWS::EC2::SecurityGroup
      Properties:
        GroupDescription: "${self:service}-${self:provider.stage}-alb-sg"
        VpcId: ${self:custom.${self:provider.stage}.alb.vpc}
    ALBSecurityGroupIngress:
      Type: AWS::EC2::SecurityGroupIngress
      Properties:
        GroupId: !GetAtt ALBSecurityGroup.GroupId
        IpProtocol: tcp
        FromPort: ${self:custom.${self:provider.stage}.alb.port}
        ToPort: ${self:custom.${self:provider.stage}.alb.port}
        CidrIp: ${self:custom.${self:provider.stage}.alb.ingress}
    LambdaFunctionPermission:
      Type: AWS::Lambda::Permission
      Properties:
        Action: lambda:InvokeFunction
        FunctionName: !GetAtt IncomingUnderscorewebhookLambdaFunction.Arn # Dynamic from function
        Principal: elasticloadbalancing.amazonaws.com
    ALBElasticLoadBalancer:
      Type: AWS::ElasticLoadBalancingV2::LoadBalancer
      Properties:
        Subnets: ${self:custom.${self:provider.stage}.alb.subnets}
        Scheme: ${self:custom.${self:provider.stage}.alb.scheme}
        SecurityGroups:
        - !GetAtt ALBSecurityGroup.GroupId
      DependsOn:
        - ALBSecurityGroup
    DNSRecord:
      Type: AWS::Route53::RecordSet
      Properties:
        HostedZoneId: ${self:custom.${self:provider.stage}.alb.hostedZoneId}
        Name: ${self:custom.${self:provider.stage}.alb.dnsName}
        AliasTarget:
          DNSName: !GetAtt ALBElasticLoadBalancer.DNSName
          HostedZoneId: !GetAtt ALBElasticLoadBalancer.CanonicalHostedZoneID
        Type: A
    LoadBalancerListener:
      Type: AWS::ElasticLoadBalancingV2::Listener
      Properties:
        Certificates:
          -  CertificateArn: ${self:custom.${self:provider.stage}.alb.certArn}
        DefaultActions:
          - Type: fixed-response
            FixedResponseConfig:
              ContentType: "text/plain"
              MessageBody: ""
              StatusCode: "404"
        LoadBalancerArn:
          Ref: ALBElasticLoadBalancer
        Port: ${self:custom.${self:provider.stage}.alb.port}
        Protocol: ${self:custom.${self:provider.stage}.alb.protocol}