Monitoring resources using RMC and resource managers

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The Resource Monitoring and Control (RMC) subsystem is the scalable backbone of RSCT that provides a generalized framework for managing and monitoring resources (physical or logical system entities) within a single system or a cluster.

Note: Most of the predefined conditions described in the documentation are not available in the Linux® implementation of RSCT. However, these same conditions can easily be created by following the instructions in Creating a condition.

RMC is a daemon that runs on individual systems or each node of a cluster. It provides a single management/monitoring infrastructure for individual machines, peer domains, and management domains. RMC, however, is a generalized framework — it provides an abstract way of representing resources of a system, but it does not itself represent the actual resources. The actual resources are represented by resource managers. A resource manager is a daemon process that maps RMC's resource abstractions into actual descriptions of resources. Since the various resource managers all define resources according to the same abstraction defined by RMC, RMC is able to manage the resources generically.