Linux
Let's Encrypt Kept Failing After a Server Move. The Culprit Was a Second A Record.
Two A records after a migration meant round robin, and Let's Encrypt's multi-perspective validation kept hitting the old server. Diagnosis and fix.
nginx
Nginx and web server configs that work: reverse proxies, TLS with Let's Encrypt, WebSockets and certificate pitfalls.
Security
My Blog Went Down Because Plesk Stopped Renewing the Cert — Here's the certbot Escape
A Plesk-managed Let's Encrypt cert expired and took the site down. The fix wasn't renewing it in Plesk — it was moving the domain to standalone certbot. Two gotchas included.
Linux
Caddy vs Nginx — When 5 Lines Beats certbot + Cron
Honest take on Caddy vs Nginx for small servers. Auto-HTTPS Caddyfile in 5 lines vs nginx + certbot. Where each one actually wins.