Apr 21, 2016
A few months ago, Let's Encrypt rolled out a feature to verify domains over DNS. Their automatic configuration tool doesn't support all the use cases yet, including my particular scenario: multiple load-balanced EC2 instances behind a single ELB, using Route53 for DNS. I wrote a tool to simplify updating Route53 DNS Records with the challenge, as well as updating the ELB with the resulting certificate. Check out the README and code, or read on for why I wrote it.