Generating and Linking SSL Certificates from Let's Encrypt using Certbot and Nginx
This guide will walk you through the process of generating SSL certificates from Let's Encrypt using Certbot and automatically linking them to an Nginx configuration file. We will also cover securing subdomains and setting up auto-renewal for the SSL...
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CDN Edge Ops
When Certbot renews over HTTP-01, Nginx must serve /.well-known/acme-challenge/ from disk and not proxy that path to the app. A dedicated location with root or alias, and no proxy_pass, keeps renewals working even if the upstream is down or returns its own 404. After changing the config, run a dry-run renewal and confirm the challenge file is what Nginx returns.