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

Setup Cloudflare Origin Certificate for Nginx

If you use Cloudflare as a reverse proxy, enabling HTTPS between Cloudflare and your Nginx server...

Git Push Rejected Non Fast Forward: Troubleshooting Checklist

Fix Nginx Upstream Connection Refused Error

When Nginx returns upstream connection refused in your error logs, it means Nginx tr...

Fix npm run build failing due to ESLint errors

You run npm run build and it fails with a wall of ESLint errors. This is common when...

How to Diagnose and Fix Chrome Memory Leaks

If your Chrome browser gradually consumes more and more RAM until pages lag or crash, you may be ...

Fix Nginx Configuration Test Failure from Rewrite Rules

You run nginx -t and get an error. The log points to a rewrite rule. This is common ...