HTTP-01

Call it The GCDLADB if you like.

Dockerized Traefik Host Using ACME DNS-01 Challenge  11 min read   Apr 27, 2020
This post builds on My dockerized-server Config and attempts to change what was a problematic ACME HTTP-01 or httpChallenge in Traefik and Let’s Encrypt to an ACME DNS-01 or dnsChallenge. The problem with the old HTTP-01 or httpChallenge is that it requires the creation of a valid and widely accessible “A” record in our DNS before the creation of a cert; the record has to be in place so that the Let’s Encrypt CA-server can find it to confirm that the request is valid. ...