This program enables you to update a record on Route53 to point to your public IP address if you don't have a static address. This can be scheduled using cron or any other scheduling tool of choice.

$ ./updater53 -records house.example.com
2017/03/17 00:11:18 Your IP: "108.228.144.143"
2017/03/17 00:11:18 updating record "house.example.com"

# and if you run this again after updating the record:

$ ./updater53 -records house.example.com
2017/03/17 00:11:18 Your IP: "108.228.144.143"
2017/03/17 00:11:18 updating record "house.example.com"
2017/03/17 00:12:42 no need to update record "house.example.com.",
already pointing to "108.228.144.143"

This tool is go gettable with Go 1.13. It can be installed by running go get -u -x github.com/jahkeup/updater53. The AWS Authentication is handled by the AWS Go SDK and can be configured in the same fashion as you'd configure the aws cli utility or other SDK usages (in the $HOME/.aws/credentials file or via environment variables).