How do you know if the monitoring node goes down at the same time as the other servers? Remember that Linode/Vultr/etc don't run their own datacenters, they sh

How do you know if the monitoring node goes down at the same time as the other servers? Remember that Linode/Vultr/etc don't run their own datacenters, they share datacenters and sometimes downtime events can exist outside of datacenters.