Automating SSL certificate issuance with Traefik, Let's Encrypt and Cloudflare

Where your laziness turns as positive and site reliability mindset

In today’s digital landscape, securing your web applications with HTTPS is not just a recommendation but a necessity. In this blog post, I’ll share how I setup automated SSL certificate issuance for my domains, including wildcard certificates, using Traefik, Let’s Encrypt, and Cloudflare.

The Setup

My goal was to automate the management of SSL certificates for various subdomains and wildcard domains like:

  • co.example.com
  • io.example.com
  • *.co.example.com
  • *.io.example.com

By combining Traefik (a modern HTTP reverse proxy), Let’s Encrypt (for free SSL certificates), and Cloudflare (for DNS management), I created a fully automated SSL certificate renewal system for my homelab setup.

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