Wildcard certificates make it easy to secure lots of subdomains under a single domain. For example, you can secure web.example.com and mail.example.com with a single certificate for *.example.com. Fortunately, LetsEncrypt allows you to get wildcard certificates via a DNS ownership check (often called a DNS-01 challenge).
Fortunately, Traefik can request a certificate from LetsEncrypt automatically and complete the challenge for you. It can publish DNS records to multiple providers, but my favorite is Cloudflare....
I’ve recently updated this blog and icanhazip.com to enable HTTP/2! This probably won’t have much of an effect on users who query icanhazip.com with automated tools, but it should deliver the content on this blog a little faster. If you’re using an older, non-HTTP/2 client - don’t worry. All of the sites will continue working for you as they always have.
Head on over to Wikipedia to learn more about HTTP/2 and its benefits....
The spring of 2015 marks eight years of this blog! I’ve learned plenty of tough lessons along the way and I’ve made some changes recently that might be handy for other people. After watching Sasha Laundy’s video from her awesome talk at Pycon 20151, I’m even more energized to share what I’ve learned with other people. (Seriously: Go watch that video or review the slides whether you work in IT or not. It’s worth your time.)
Let’s start from the beginning.
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