Fixing Nginx 502 Bad Gateway with Docker and Load Balancers
If you're running Nginx as a reverse proxy or load balancer in a Docker setup, a 502 Bad Gate...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesDocker Compose: Fix 'Port Already in Use on Host' Error
When you run docker compose up and see an error like port is already allocated...
Fix 'pip externally managed environment' Permission Denied Error
If you see error: externally-managed-environment when trying to install a Python pac...
VS Code Terminal Blank Screen: Quick Fixes
You open the integrated terminal in VS Code, but instead of a prompt, you get a blank or black sc...
npm run build Failed: Troubleshooting Checklist
When npm run build fails, the error message can be cryptic. This checklist walks thr...
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...
Issue queue
SitemapResolving Python Package Conflicts: A Practical Checklist
Windows Update Service Troubleshooting Checklist
Docker No Space Left on Device Error: Fix Guide
Node.js Package Compatibility: How to Verify Your Version
Understanding Timeouts in Python Requests
How to Fix Nginx Redirect Loop in Server Block
VSCode IntelliSense Not Working for React: Fixes
Fix Docker Compose Environment Variables Not Reaching Entrypoint
Complete Git LFS Installation Tutorial with Fixes
Docker Compose: Fix 'Port Already in Use on Host' Error
VPN DNS Probe NXDOMAIN Error Fix
Fix Node.js Heap Out of Memory on Linux Server
Windows Update Service Troubleshooting Checklist
Docker No Space Left on Device Error: Fix Guide
Node.js Package Compatibility: How to Verify Your Version
Understanding Timeouts in Python Requests
How to Fix Nginx Redirect Loop in Server Block
VSCode IntelliSense Not Working for React: Fixes
Fix Docker Compose Environment Variables Not Reaching Entrypoint
Complete Git LFS Installation Tutorial with Fixes
Docker Compose: Fix 'Port Already in Use on Host' Error
VPN DNS Probe NXDOMAIN Error Fix
Fix Node.js Heap Out of Memory on Linux Server