I have inherited the SolarWinds Orion implementation and I ran into this situation which I don't understand.
I have a server that is not in any alert condition, but is showing in the details that it jumped to 100% CPU utilization on October 13th and remained that way until present. It is currently at 100% and is no listed in Active Alerts. everything look green except for the 100% CPU load. Looking at the Alert Manager I see why no notification would be sent; it's due to a custom property that designates Tier 1 from lower tiers. Lower tiers are not set to ever send a notification. However, this doesn't explain why there is no Active Alert.
Since the Node Properties for this server show Alerting Thresholds are at the Orion defaults (90% warning/95% critical), shouldn't I see an active alert?