Server Troubleshooting

Common issues with Ubuntu servers and their solutions, including network issues, service configuration errors, and more.

Troubleshooting Tips

This guide will help you diagnose and solve common server issues with Ubuntu. Each section includes a problem and potential solutions.

1. Network Connectivity Issues

  • Check interface status: ip a
  • Use ping or traceroute to test connectivity.
  • Ensure network manager is running: systemctl status NetworkManager.

2. Service Not Running

  • Check service status: systemctl status
  • Restart service: sudo systemctl restart
  • Review service logs: journalctl -u

3. Package or Dependency Issues

  • Update package list: apt update
  • Install missing dependencies: apt install -f
  • Reinstall problematic packages: apt reinstall

4. Firewall Blocking Connections

  • Check UFW rules: ufw status
  • Allow required ports