Abstract: A scalable hierarchical health model provides granularly focused evaluations of the health of the health of distributed computational components, e.g., cluster, nodes, applications, services, and the like. A health entity represents a health state of a corresponding computational component. When a health condition is detected, it is reported to a replicated health store by sending a health report which identifies one or more health entities, each of which has the finest granularity of any health entity associated with the health condition. The health report includes a health entity ID, a health property, and a health state of the health property. A health report may also include a health event description written to inform human readers about the event in question. One or more events may be reported in a given health report. The health store aggregates health states according to health policies, thereby providing actionable health information.