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

Cloudflare SSL Full Strict Setup Guide

If you enable Cloudflare's SSL/TLS encryption and set it to Full (Strict), y...

Git Detached HEAD vs Attached HEAD: What It Means and How to Fix

If you've seen the message "You are in 'detached HEAD' state" while using Git...

Fix Firefox Secure Connection Failed DNS Error

You try to visit a website in Firefox and see 'Secure Connection Failed' with an error li...

Cloudflare Origin Certificate Setup Checklist

You've set up Cloudflare but your origin server still shows SSL errors or mixed content warni...

Docker Compose Ports Not Working: Common Fixes

You've defined ports in your docker-compose.yml, but containers aren't reachable on the e...

Fix Nginx Upstream Connection Refused in Proxy Pass