![](https://secure.gravatar.com/avatar/31624109ddddac107dccfee4b36d9545.jpg?s=120&d=mm&r=g)
Hello
At the night the Observium showed an alert (fortunately) that I never set up in the Alert checks . I see this alert in Global/Alerts and the left up box there is an “1 alert” in the Statuses row. If I click the “1 alert” it shows me that a Cisco Nexus FEX modul’s powersupply EVENT is alert and Status is offDenied. So it is a dead PS.
What I can to do if I would like to get alert if this happen again? I have lot of Alert Checks but I am not able to do an alert for this PS check because I don’t know what is the correct Entity match of it. I tried the “sensor_class equals powersupply” and Test is “sensor_value greater 2” (looks the normal PS value is 2, now this failed PS value is 4). But it doesn’t work (no matched entities).
Thanks Laszlo