Resource classes defined by the configuration resource manager

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In general, you do not need to manipulate resources of these classes directly. Instead, use the configuration resource manager commands.

Table 1 describes the resource classes defined by the configuration resource manager. In general, you do not need to manipulate resources of these classes directly. Instead, use the configuration resource manager commands. However, you might need to:
  • Modify attributes of the RSCTParameters class.
  • Modify the CritRsrcProtMethod attribute of the IBM.PeerNode class or a resource instance of the IBM.PeerNode class.
  • Modify the OpQuorumOverride attribute of the IBM.PeerNode class.
  • Modify the OpQuorumTieBreaker attribute of the IBM.PeerNode class.
  • Modify the IsPreferredGSGL attribute of the IBM.PeerNode class.
Table 1. Resource classes defined by the configuration resource manager
Resource class Description
IBM.CommunicationGroup Each resource of this class represents a communication resource upon which liveness checks (Topology Services heartbeat) is performed.
IBM.HeartbeatInterface Each resource of this class represents a heartbeat interface that exists in the peer domain.
IBM.NetworkInterface Each resource of this class represents an IP network interface that exists in the peer domain.
IBM.PeerDomain Each resource of this class represents an RSCT peer domain in which a particular node is defined. Each node has its own IBM.PeerDomain resource class, with each instance of the resource class, representing an RSCT peer domain in which the node is defined. The number of instances of this resource class, therefore, indicates the number of peer domains in which the node is defined.

For the DomainType resource persistent attribute, DomainType = 1 indicates that RPD is created in the CAA environment by using mkrpdomain with the –C option. DomainType = 0 indicates that the RPD is created by using the mkrpdomain command without the –C option.
IBM.PeerNode Each resource of this class represents a node defined in the peer domain. A node is here defined as an instance of an operating system, and is not necessarily tied to hardware boundaries.
IBM.RSCTParameters Represents operational characteristics of RSCT subsystems.
IBM.TieBreaker Each resource of this class represents a tiebreaker. A tiebreaker is used, when domain partitioning results in two subdomains, each containing exactly one-half of the nodes, to determine which subdomain has an operational quorum. In QuorumLess mode, a tiebreaker is always used to determine the subdomain that has an operational quorum.