Service type health policy defines the rules to aggregate the health status of services deployed in a cluster on to the service health entity. This policy can be configured in the application manifest file. The following is an example:

        <Policies>
            <HealthPolicy ConsiderWarningAsError="true" 
               MaxPercentUnhealthyDeployedApplications="20">
                <DefaultServiceTypeHealthPolicy
                       MaxPercentUnhealthyServices="0"
                       MaxPercentUnhealthyPartitionsPerService="10"
                       MaxPercentUnhealthyReplicasPerPartition="0"/>
                <ServiceTypeHealthPolicy 
                   ServiceTypeName="FrontEndServiceType"
                       MaxPercentUnhealthyServices="0"
                       MaxPercentUnhealthyPartitionsPerService="20"
                       MaxPercentUnhealthyReplicasPerPartition="0"/>
                <ServiceTypeHealthPolicy 
                   ServiceTypeName="BackEndServiceType"
                       MaxPercentUnhealthyServices="20"
                       MaxPercentUnhealthyPartitionsPerService="0"
                       MaxPercentUnhealthyReplicasPerPartition="0">
                </ServiceTypeHealthPolicy>
            </HealthPolicy>
        </Policies>

This policy uses the following parameters to specify the tolerance levels:

• MaxPercentUnhealthyPartitionsPerService: The threshold for unhealthy partitions before marking a service entity as unhealthy
• MaxPercentUnhealthyReplicasPerPartition: The threshold for unhealthy replicas before marking a partition entity as unhealthy
• MaxPercentUnhealthyServices: The threshold for unhealthy services before marking an application entity as unhealthy

The default value for all the three preceding listed parameters is zero.