route_53.yaml

AWSTemplateFormatVersion: 2010-09-09
Description: Route 53 reusable template  with ALB alias

Parameters: 

  MyWebDomain:
    Description: "A reference to the Webserver Fully Qualified Domain Name domain name www.example.com"
    Type: String
    Default: ""
  MyHostedZone:
    Description: "A reference to the Hosted Zone example.com"
    Type: String
    Default: ""
  MyWebALBDNSName:
    Description: "A reference to the Webserver ELB DNS Name A Record"
    Type: String
    Default: ""
  MyWebALBHostedZoneId:
    Description: "A reference to the Webserver ELB (Canonical) Hosted Zone ID"
    Type: String
    Default: "Z35SXDOTRQ7X7K" 
    AllowedValues: 
      - Z35SXDOTRQ7X7K # us-east-1
      - Z3AADJGX6KTTL2 # us-east-2
 
Resources:

  MyRoute53:
    Type: "AWS::Route53::RecordSetGroup"
    Properties:
      HostedZoneName: !Sub "${MyHostedZone}."
      Comment: "Zone apex alias targeted to myELB LoadBalancer."
      RecordSets:
      - Name: !Sub "${MyWebDomain}."
        Type: 'A'
        AliasTarget:
          HostedZoneId: !Ref "MyWebALBHostedZoneId"
          DNSName: !Ref "MyWebALBDNSName"      

Outputs:

  MyRoute53:
    Description: "A reference to the Route53"
    Value: !Ref MyRoute53