Reliable fault resolution in a cluster

Details Reliable fault resolution in a cluster Reliable fault resolution in a cluster

2007-10-16

2007-10-16

Wilson, Yolanda L. (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C709S223000, C709S224000

Reexamination Certificate

active

10649269

ABSTRACT:
A method and system for localizing and resolving a fault in a cluster environment. The cluster is configured with at least one multi-homed node, and at least one gateway for each network interface. Heartbeat messages are sent between peer nodes and the gateway in predefined periodic intervals. In the event of loss of a heartbeat message by any node or gateway, an ICMP echo is issued to each node and gateway in the cluster for each network interface. If neither a node loss nor a network loss is validated in response to the ICMP echo, an application level ping is issued to determine if the fault associated with the absence of the heartbeat message is a transient error condition or an application software fault.

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“Application Level Ping”—http://www.samag.com/documents/s=1182/sam9901g/.

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