In this post I describe how to use the Amazon Command Line Interface (CLI) to update Route 53 Hosted Zone entries. When you shutdown and start up an AWS instance it will be assigned a new IP address. Of course this is only when you actually shutdown the instance, just doing a restart will maintain the existing address. Unfortunately assigning a new IP address will mean that your Route 53 Hosted Zone will be pointing to an old address.
Below are my notes on the AWS service Route 53. Route 53 is the AWS DNS service. It’s named after port 53 which is the DNS port. Route 53 is not a regional service it is set up on the Global region only. It’s more commonly used for public domain names but can also be used for private names in VPCs. Before we get into the details of Route 53 it’s good to have a background in DNS.