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

Fix 'port already allocated' Error in Docker Compose

You run docker compose up and see port is already allocated. This means...

How to Set Python Requests Timeout for the Entire Request

When you use the Python requests library, a request can hang indefinitely if the ser...

Fix Nginx 502 Bad Gateway on Docker Ubuntu

Fix Docker Desktop Engine Stopped Due to WSL Issue

You start Docker Desktop, but the engine stops almost immediately, often with a message about WSL...

Fix Nginx Permission Denied Errors on Ubuntu

If you're seeing permission denied errors in your Nginx error log on Ubuntu, the...

Cloudflare DNS Not Propagating for Subdomain: Fixes

You added a subdomain record in Cloudflare DNS, but it still resolves to the old IP or nothing at...