Gets the health of a Service Fabric node, by using the specified health policy.

Defines a map with max percentage unhealthy applications for specific application types. Each entry specifies as key the application type name and as value an integer that represents the MaxPercentUnhealthyApplications percentage used to evaluate the applications of the specified application type.

The application type health policy map can be used during cluster health evaluation to describe special application types. The application types included in the map are evaluated against the percentage specified in the map, and not with the global MaxPercentUnhealthyApplications defined in the cluster health policy. The applications of application types specified in the map are not counted against the global pool of applications. For example, if some applications of a type are critical, the cluster administrator can add an entry to the map for that application type and assign it a value of 0% (that is, do not tolerate any failures). All other applications can be evaluated with MaxPercentUnhealthyApplications set to 20% to tolerate some failures out of the thousands of application instances. The application type health policy map is used only if the cluster manifest enables application type health evaluation using the configuration entry for HealthManager/EnableApplicationTypeHealthEvaluation.

Defines a map with max percentage unhealthy nodes for specific node types. Each entry specifies as key the node type name and as value an integer that represents the MaxPercentUnhealthyNodes percentage used to evaluate the nodes of the specified node type.

The node type health policy map can be used during cluster health evaluation to describe special node types. They are evaluated against the percentages associated with their node type name in the map. Setting this has no impact on the global pool of nodes used for MaxPercentUnhealthyNodes. The node type health policy map is used only if the cluster manifest enables node type health evaluation using the configuration entry for HealthManager/EnableNodeTypeHealthEvaluation.

For example, given a cluster with many nodes of different types, with important work hosted on node type "SpecialNodeType" that should not tolerate any nodes down. You can specify global MaxPercentUnhealthyNodes to 20% to tolerate some failures for all nodes, but for the node type "SpecialNodeType", set the MaxPercentUnhealthyNodes to 0 by setting the value in the key value pair in NodeTypeHealthPolicyMapItem. The key is the node type name. This way, as long as no nodes of type "SpecialNodeType" are in Error state, even if some of the many nodes in the global pool are in Error state, but below the global unhealthy percentage, the cluster would be evaluated to Warning. A Warning health state does not impact cluster upgrade or other monitoring triggered by Error health state. But even one node of type SpecialNodeType in Error would make cluster unhealthy (in Error rather than Warning/Ok), which triggers rollback or pauses the cluster upgrade, depending on the upgrade configuration.

Conversely, setting the global MaxPercentUnhealthyNodes to 0, and setting SpecialNodeType's max percent unhealthy nodes to 100, with one node of type SpecialNodeType in Error state would still put the cluster in an Error state, since the global restriction is more strict in this case.

The list of health events reported on the entity.

List of health evaluations that resulted in the current aggregated health state.

The health statistics of an entity, returned as part of the health query result when the query description is configured to include statistics. The statistics include health state counts for all children types of the current entity. For example, for cluster, the health statistics include health state counts for nodes, applications, services, partitions, replicas, deployed applications and deployed service packages. For partition, the health statistics include health counts for replicas.