How is health calculated?
Health is determined from threshold violations of polled metrics. These metrics contribute to an overall health status, as follows:
• Healthy (green)—No threshold violations are reported.
• Degraded (yellow)—Minor threshold violations are reported.
• Critical (orange)—Major threshold violations are reported.
• Down (red)—Device is in a down state.
• Unknown (gray)—Insufficient information to determine health.
Each object type uses different input metrics and thresholds to determine health. These are detailed in the following sections.
If any of the input metrics for a given object crosses a threshold, then the derived health sample will be set according to the threshold crossed. For example, if a device returns a CPU value of 95% when polled, it will have crossed its Major threshold and its health will be set to Critical.
The health of the device is aggregated into the health of any sites or groups of which it is a part. When a device is in a Degraded state, the site or group will also appear in a Degraded state.
For information about default thresholds, see
Configuring default thresholds.