The vCenter Server API offers health status indicators for several key components of the system. These indicators can be polled periodically to monitor the components for problems.

The health status indicators report graded values from green to red. The general meanings of the grades are as follows.

green
The component is healthy.
yellow
The component is healthy, but may have some problems.
orange
The component is degraded, and may have serious problems.
red
The component is unavailable, or will stop functioning soon.
gray
No health data is available.