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 notesFix Docker Compose Environment Variable Substitution Failed
When running docker compose up, you might see errors like failed to resolve co...
Docker Compose Port Already Allocated: Checklist
You run docker-compose up and get an error like Error starting userland proxy:...
Fix npm Run Build Out of Memory Errors
If your npm run build fails with an out-of-memory error, you're not alone. This ...
How to Fix Docker Pull 'Access Denied' or 'Permission Denied'
When you run docker pull and see access denied or permission deni...
Fix Cloudflare Origin Certificate with Let's Encrypt
If your origin server is rejecting the Cloudflare origin certificate—perhaps because of a SAN mis...
Issue queue
SitemapWindows 11 Update Stuck at 0%? Here's How to Fix It
Fix Cloudflare Origin Certificate with Let's Encrypt
Git SSL Error: Unable to Get Local Issuer Certificate
Windows 11 Bluetooth Not Working? 10 Troubleshooting Steps
How to Reset Windows Search Index (Step by Step)
How to Resolve Nginx Duplicate Listen Error
Fix Docker Network Missing Error
Remove Problematic Windows 11 Update via Safe Mode
How to Fix Blue Screen After Windows 11 Update
Increase Git Timeout for Large Repositories
Python Virtual Environment Not Activating: Common Fixes
VSCode Rust Completion Not Showing
Fix Cloudflare Origin Certificate with Let's Encrypt
Git SSL Error: Unable to Get Local Issuer Certificate
Windows 11 Bluetooth Not Working? 10 Troubleshooting Steps
How to Reset Windows Search Index (Step by Step)
How to Resolve Nginx Duplicate Listen Error
Fix Docker Network Missing Error
Remove Problematic Windows 11 Update via Safe Mode
How to Fix Blue Screen After Windows 11 Update
Increase Git Timeout for Large Repositories
Python Virtual Environment Not Activating: Common Fixes
VSCode Rust Completion Not Showing