Patent
1996-02-27
1998-09-08
Beausoliel, Jr., Robert W.
39518218, G06F 1100
Patent
active
058057854
ABSTRACT:
A system and method for a general and extensible infrastructure providing monitoring and recovery of interdependent systems in a distributed/clustered system is disclosed. Subsystems, built without provision for high availability, are incorporated into the infrastructure without modification to core subsystem function. The infrastructure is comprised of one or more computing nodes connected by one or more interconnection networks, and running one or more distributed subsystems. The infrastructure monitors the computing nodes using one or more heartbeat and membership protocols, and monitors the said distributed subsystems by subsystem-specific monitors. Events detected by monitors are sent to event handlers. Event handlers process events by filtering them through activities such as event correlation, removal of duplicates, and rollup. Filtered events are given by Event Managers to Recovery Drivers which determine the recovery program corresponding to the event, and executing the recovery program or set of recovery actions by coordination among the recovery managers. Given failures of said event handlers or recovery managers, the infrastructure performs the additional steps of: coordinating among remaining event handlers and recovery managers to handle completion or termination of ongoing recovery actions, discovering the current state of the system by resetting the said monitors, and handling any new failure events that may have occurred in the interim.
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Dias Daniel Manuel
King Richard Pervin
Leff Avraham
Beausoliel, Jr. Robert W.
International Business Machines - Corporation
Iqbal Nadeem
Jordan Kevin
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