Following table lists the key notifications issued by the Server Manager entities.
|ClusterManager||ServiceAffected||The OpenStack Management Server is not functioning properly.|
|ControllerService||ServiceAffected||The Controller Service is not functioning properly.|
|ComputeService||ServiceAffected||The Compute Service is not functioning properly.|
|ControllerServiceCluster||AtRisk||Indicates that the number of functioning components is below the AtRiskThreshold|
|ReducedRedundancy||Indicates at least one component is not functioning but the total number of functioning components is above.|
|AllComponentsDown||Indicates that all of the components in the redundancy group are down.|
Refer Notifications section of KVM Hypervisor Management, for existing notifications apart from the above listed topology objects.