Monitor multiple pi's at once

[Ninjasrus]

How can I monitor multiple Pi's connected to the internet via a single interface? I feel like the answer is so simple but I just can't see it.

[joan]

What do you mean by monitor?

[Ninjasrus]

See, view, keep an eye on, check status, monitor.

[tpyo kingg]

It's still a vague request. What activities or functions do you actually want to "see", "view", "keep an eye on", check status, or "monitor"? And what is it you are hoping to be able to spot?

For a vague answer, you could start looking at Cacti, Zabbix, Nagios, or Suricata. Zabbix, Nagios and Cacti are somewhat similar in their goals. Suricata does something else. How close do any of these get to what you have in mind?

[Z80 Refugee]

See, view, keep an eye on, check status, monitor.

Do you mean you want to access multiple RPis across a network (use VNC), or run multiple RPis using one keyboard, mouse, and screen (use a KVM switch)?