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Clusters for High Availability: A Primer of HP Solutions, Second Edition by Peter S. Weygant - Hewlett-Packard Company

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Chapter 4. Cluster Monitoring and Management

The use of HA clusters, as we have seen, can eliminate SPOFs and significantly reduce unplanned downtime in the data center. But clustering alone will not eliminate failures altogether. Since components ultimately fail, an important consideration in designing an HA solution is to manage failure events closely. To do this job well, the cluster administrator needs good monitoring and management tools.

The ideal in monitoring and management is to develop a proactive approach that attempts to intercept failures before they occur. Monitoring of critical component thresholds with sophisticated tools can often allow you to replace components before they fail. When a failure does occur, a redundant component ...

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