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

How to Generate a Cloudflare Origin Certificate

If you're using Cloudflare as a reverse proxy, you may want to encrypt traffic between your s...

Nginx Upstream Connection Refused: Fixing localhost Errors

You set up an nginx reverse proxy to forward requests to a backend service on localhost, but ngin...

Fix Git Push Rejected Non Fast Forward Error

Fix Nginx 502 Bad Gateway: Upstream Connection Refused

If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...

Fix Docker Build Context Canceled Timeout Errors

When running docker build, you might see an error like "context canceled"...