Subdomain CNAME with Cloudfront

Automation is good. It means less mistakes and simple cookbooks for runbooks and deployments. Here is a simple recipe for deploying a subdomain CNAME with cloudfront.

	{
	"AWSTemplateFormatVersion" : "2010-09-09",
	"Description" : "AWS CloudFormation Template Route53_CNAME. This uses the patameters to create a subdomain CNAME",
	"Parameters" : {
	"HostedZone" : {
	"Type" : "String",
	"Description" : "The DNS name of an existing Amazon Route 53 hosted zone",
	"AllowedPattern" : "(?!-)[a-zA-Z0-9-.]{1,63}(?<!-)",
	"ConstraintDescription" : "must be a valid DNS zone name."
	},
	"SubdomainParam": {
	"Type": "String",
	"Description": "Enter the subdomain name for the stack you want mapped to the CNAME"
	},
	"LoadBalancerParam": {
	"Type": "String",
	"Description": "Enter the loadbalancer name for the stack you want mapped to the CNAME"
	}
	},
	"Resources" : {
	"SubdomainDNSRecord" : {
	"Type" : "AWS::Route53::RecordSet",
	"Properties" : {
	"HostedZoneName" : { "Fn::Join" : [ "", [{"Ref" : "HostedZone"}, "." ]]},
	"Comment" : "CNAME redirect to subdomain.",
	"Name" : { "Fn::Join" : [ "", [{"Ref" : "SubdomainParam"}, ".", {"Ref" : "HostedZone"}, "."]]},
	"Type" : "CNAME",
	"TTL" : "900",
	"ResourceRecords" : [{
	"Ref": "LoadBalancerParam"
	}]
	}
	}
	},
	"Outputs" : {
	"CNAME" : {
	"Description" : "Fully qualified domain name",
	"Value" : { "Ref" : "SubdomainDNSRecord" }
	}
	}
	}

view raw cf_cname_subdomain.json hosted with ❤ by GitHub

	#!/usr/bin/env bash
	aws cloudformation create-stack --profile default --stack-name stage-blog-cname \
	--template-body file:///Users/claytongraham/data/github/dronze/dronze-cicd/cf/r53_cname.json \
	--parameters ParameterKey=HostedZone,ParameterValue=dronze.com \
	ParameterKey=SubdomainParam,ParameterValue=stage.blog \
	ParameterKey=LoadBalancerParam,ParameterValue=dronze-elb-PROD-1699664721.us-west-2.elb.amazonaws.com

view raw create_r53_cname.sh hosted with ❤ by GitHub

	{
	"Version": "2012-10-17",
	"Statement": [
	{
	"Action": "cloudformation:*",
	"Effect": "Allow",
	"Resource": "arn:aws:cloudformation:us-west-2:715212546939:stack/*"
	},
	{
	"Action": "route53:*",
	"Effect": "Allow",
	"Resource": "arn:aws:route53:::hostedzone/Z3VRQF6A9GQX5I"
	},
	{
	"Action": "codepipeline:*",
	"Effect": "Allow",
	"Resource": "*"
	}
	]
	}

view raw create_r53_policy.json hosted with ❤ by GitHub