This script makes it very easy to migrate an entire DNS zone from one AWS Route53 zone to another. This script expects you to have downloaded the old zone file via the AWS CLI to a json file called DOMAIN.zone.json. It uses the AWS CLI to perform the request, so make sure that your credentials are properly configured.

migrate-route53-dns

#!/usr/bin/env ruby

require 'json'

# This is the json output of the old zone, fetched using the AWS CLI.
zone = JSON.parse(File.read('DOMAIN.zone.json'))['ResourceRecordSets']

new_zone_id = 'NEW_ZONE_ID'

# We don't want to migrate the SOA and NS records from the old zone.
# The new zone has new values for these and we want to keep them.
zone.reject! { |set| ['SOA', 'NS'].include?(set['Type']) }

result = {
  'HostedZoneId' => new_zone_id,
  'ChangeBatch' => {
    'Changes' => [],
  }
}

zone.each do |set|
  result['ChangeBatch']['Changes'] << {
    'Action' => "CREATE",
    'ResourceRecordSet' => set
  }
end

json = JSON.generate(result)

exec "aws route53 change-resource-record-sets --hosted-zone-id #{new_zone_id} --cli-input-json '#{json}' --profile YOUR_PROFILE"

Thank you. You saved my life. 👍

cheers, very useful