What steps should be taken if the server crashes and stops responding?

If the server stops responding, the following steps should be taken:

1. Check the server status: try to connect to the server via SSH or the control panel.
2. View logs: examine system and application logs to identify errors or failures.
3. Check resource usage: CPU, memory, disk — the server might be overloaded.
4. Restart services: if the problem is with a specific service, try restarting it.
5. Check network settings: ensure there are no issues with the network or firewall.
6. Notify the team: if you cannot resolve the issue yourself, inform the responsible personnel.

Example command to view the last lines of the log on Linux:

tail -n 50 /var/log/syslog

If the server is critical, it is advisable to have an emergency recovery plan and backups.