Did you mean to visit localhost:9000?

Did you mean to visit: http://localhost:9000/?

💡 Pro Tip: Port 9000 is commonly used by SonarQube for code quality analysis and PHP-FPM for PHP applications.

Quick Commands for Port 9000

Find what's using port 9000:
lsof -i :9000 (Mac/Linux)
netstat -ano | findstr :9000 (Windows)

Check SonarQube status:
curl http://localhost:9000/api/system/status
docker ps | grep sonarqube

About Port 9000

Port 9000 is commonly used by:

SonarQube code quality and security tool
PHP-FPM (FastCGI Process Manager)
Tomcat (alternative port)
Portainer Docker management UI
Jenkins (alternative port)
Prometheus monitoring system

Common Issues with Port 9000

"Port 9000 is already in use"

This error occurs when another application is already using port 9000. Solutions:

Find and close the application using port 9000
Use a different port:
- SonarQube: Edit sonar.properties to change sonar.web.port=9001
- PHP-FPM: Edit php-fpm.conf to change listen = 127.0.0.1:9001
- Tomcat: Edit server.xml to change the connector port
On Windows, find and kill the process: netstat -ano | findstr :9000 then taskkill /PID [PID] /F
On Linux/Mac: lsof -i :9000 then kill -9 [PID]

"SonarQube fails to start"

Common issues with SonarQube startup:

Check if Elasticsearch is running (required by SonarQube)
Ensure you have sufficient memory (at least 4GB recommended)
Check SonarQube logs in logs/sonar.log
Verify database connection settings in sonar.properties
Make sure the user running SonarQube has proper permissions

"PHP-FPM connection issues"

If your web server can't connect to PHP-FPM:

Verify PHP-FPM is running: systemctl status php-fpm
Check the listen directive in php-fpm.conf
Ensure your web server (Nginx/Apache) is configured correctly to pass requests to PHP-FPM
Check permissions on the PHP-FPM socket if using Unix sockets
Examine PHP-FPM logs for errors

Useful Resources

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