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

Docker Compose Environment Variable Not Working: Fixes

You define a variable in a .env file or directly in docker-compose.yml, but your container sees n...

How to Check if Cloudflare DNS Propagation Is Complete

When you change a DNS record in Cloudflare, propagation doesn't happen instantly. Even with C...

Cloudflare SSL Full Strict Configuration Checklist

If you see 'This website is not available' or a redirect loop after enabling Cloudflare S...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer Certificate

Cloudflare Origin Certificate Setup Checklist

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

Fixing Nginx Upstream Connection Refused and Permission Denied

If you see connect() failed (111: Connection refused) or connect() failed (13:...