Knowledge base for software setup, errors, and daily tool work.

Cloudflare Wildcard Subdomain CNAME Setup Guide

If you need to route all subdomains (e.g., *.example.com) to the same target, a wildcard CNAME re...

Fix Nginx Redirect Loop: Permanent Solutions

You're trying to reach a site, and the browser keeps bouncing between two URLs until it gives...

Fixing Nginx Upstream Connection Refused in Load Balancing

When Nginx load balancing returns upstream connection refused, it means one or more ...

Fix 'node sass build failed permission denied' Error