| Interface | Description | 
|---|---|
| HighAvailabilityManager | Monitors other management nodes (via the  ManagementPlaneSyncRecordPersister) to detect
 if the current master has failed or stopped. | 
| ManagementNodeSyncRecord | Represents the state of a management-node. | 
| ManagementPlaneSyncRecord | Meta-data about the management plane - the management nodes and who is currently master. | 
| ManagementPlaneSyncRecordPersister | Controls the persisting and reading back of mementos relating to the management plane. | 
| ManagementPlaneSyncRecordPersister.Delta | 
| Enum | Description | 
|---|---|
| HighAvailabilityMode | Specifies the HA mode that a mgmt node should run in | 
| ManagementNodeState | |
| ManagementPlaneSyncRecordPersister.Delta.MasterChange | |
| MementoCopyMode |