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

Fix Git Push Rejected Non Fast Forward Error

How to Fix Nginx Redirect Loop That Prevents Site Loading

You open your site, and the browser keeps loading until it times out or shows a redirect error. T...

Fixing NGINX 502 Bad Gateway in Docker Containers

When running NGINX as a reverse proxy in Docker, a 502 Bad Gateway error usually means NGINX cann...

Docker Container Exits Immediately: Diagnosing Out of Memory

You start a Docker container and it exits within seconds. The logs show nothing obvious, or they ...

Fix Node Sass Build Failure After npm Cache Clean

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...