aws_route53_create_alias.sh

#!/bin/bash

# Requires an S3 bucket with website redirect for zone apx
# e.g. example.com -> www.example.com
# See http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region
# for alias target hosted zone ID.
hosted_zone_id="ZABCDEFGHIJ1K"
alias_target_hosted_zone_id="Z1WCIGYICN2BYD"

aws route53 change-resource-record-sets \
            --hosted-zone-id "$hosted_zone_id" \
            --region "ap-southeast-2" \
            --change-batch "{
  \"Changes\": [
    {
      \"Action\": \"CREATE\",
      \"ResourceRecordSet\": {
        \"Name\": \"example.com\",
        \"Type\": \"A\",
        \"AliasTarget\": {
          \"HostedZoneId\": \"$alias_target_hosted_zone_id\",
          \"DNSName\": \"s3-website-ap-southeast-2.amazonaws.com.\",
          \"EvaluateTargetHealth\": false
        }
      }
    }
  ]
}"