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