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Administration Guide


Components provided for monitoring

The major components of the RSCT monitoring tool are the Resource Monitoring and Control (RMC) subsystem and certain resource managers. The resource managers are briefly described in the following sections. For more detailed information about the resource managers, see IBM RSCT for Linux: Guide and Reference.

Resource Monitoring and Control subsystem

The Resource Monitoring and Control (RMC) subsystem monitors and queries resources. The RMC daemon manages an RMC session and recovers from communications problems.

The RMC subsystem is used by its clients to monitor the state of system resources and to send commands to resource managers. The RMC subsystem acts as a broker between the client processes that use it and the resource manager processes that control resources.

Resource managers

A resource manager is a process that maps resource and resource-class abstractions into calls and commands for one or more specific types of resources. A resource manager is a stand-alone daemon. The resource manager contains definitions of all resource classes that the resource manager supports. A resource class definition includes a description of all attributes, actions, and other characteristics of a resource class. These resource classes are accessible and their properties can be manipulated by the user through the command line.

See the man pages or the IBM RSCT for Linux: Technical Reference to learn how to access the resource classes and manipulate their attributes through the command line interface.

The following resource managers are provided:

Audit Log resource manager (IBM.AuditRM)
Provides a system-wide facility for recording information about the system's operation, which is particularly useful for tracking subsystems running in the background. See IBM RSCT for Linux: Guide and Reference for details.

Domain Management Server resource manager (IBM.DMSRM)
Manages a set of nodes and node groups that are part of a system management cluster. This includes monitoring the status of the nodes and adding, removing, and changing attributes of the nodes and node groups in the cluster. See Domain Management Server Resource Manager and Managing node and node group information for details.

Event Response resource manager (IBM.ERRM)
Provides the ability to take actions in response to conditions occurring on the system. See IBM RSCT for Linux: Guide and Reference for details.

File System resource manager (IBM.FSRM)
Monitors file systems. See IBM RSCT for Linux: Guide and Reference for details.

Host resource manager (IBM.HostRM)
Monitors resources related to an individual machine. The types of values that are provided relate to load (processes, paging space, and memory usage) and status of the operating system. It also monitors program activity from initiation until termination. See IBM RSCT for Linux: Guide and Reference for details.

Sensor resource manager (IBM.SensorRM)
Provides a means to extend RMC via scripts. See IBM RSCT for Linux: Guide and Reference for details.


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