Cloudflare origin certificates in Traefik

Using Cloudflare as a DNS provider for your domains, you can take advantage of its SSL certificates to secure your websites. So you don’t have to struggle with Traefik and Let’s Encrypt to generate your own certificates.

This guide is also useful if you use the free domains described in this post, because Cloudflare blocks the creation of certificates via Let’s Encrypt.

Concept

Cloudflare creates a dedicated certificate that allows the server to communicate only with Cloudflare’s servers. The certificate is not recognized as valid by the various browsers. Cloudflare’s proxies will then provide a certificate that is valid and recognized by all major browsers.