Flow Control for Limited Buffer Multicast
IEEE Transactions on Software Engineering
Cluster-based online monitoring system of web traffic
Proceedings of the 3rd international workshop on Web information and data management
A Hot-Failover State Machine for Gateway Services and Its Application to a Linux Firewall
DSOM '02 Proceedings of the 13th IFIP/IEEE International Workshop on Distributed Systems: Operations and Management: Management Technologies for E-Commerce and E-Business Applications
Parallel Computing - Optimization on grids - Optimization for grids
A new heartbeat mechanism for large-scale cluster
APWeb'06 Proceedings of the 2006 international conference on Advanced Web and Network Technologies, and Applications
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One of the most commonly identified features which is felt to be necessary for LinuxTM to be considered "enterprise-ready" is High-Availability. High-Availability (HA) systems provide increased service availability through clustering techniques. HA clusters minimize availability interruptions by quickly switching services over from failed systems to working systems, providing the customer with an illusion of continuous availability. As such, high-availability features, are vital to mission-critical systems. Although there are many components to a high-availability system, two of the key components are heartbeat services and cluster communication services. Heartbeat services provide notification of when nodes are working, and when they fail. In the Linux-HA project, the heartbeat program provides these services and intracluster communication services. This paper describes the design of the heartbeat program which is part of the High-Availability Linux Project with particular emphasis on the rationales behind key design choices, and the results obtained.