Create a free account at https://healthchecks.io
Then start a new health check, configure the heartbeat at a frequency that you think makes sense for your use case, and then copy the http call URL. Configure the integration with Pushover or your supported notification service of choice.
Create a rule machine rule that sends an http call to the health checks url. Make sure the heartbeat settings above and the frequency of the rule machine web call are consistent.
If the hub goes down, or your internet does, healthchecks will send you a notification once the heartbeat http call fails to check in.
I have several heartbeats setup for my hub as well as servers, VMs or docker containers running at home that I want to know if any stop running. Super handy tool assuming healthchecks.io itself and the broader internet are functioning (which they usually are).
