> Who watches the watchers? You would need multiple watchers who watch one another. Of course, if all watchers die at the same time, you're out of luck. This

> Who watches the watchers? You would need multiple watchers who watch one another. Of course, if all watchers die at the same time, you're out of luck. This is only part of the solution though, because in order to write and test effective alerting rules, you need to repeatedly and frequently test them with either real or simulated failures, and it can get expensive.