Oracle® Solaris Cluster Data Services Developer's Guide

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Updated: July 2014, E39646-01
 
 

How the CRNP Works

The CRNP provides mechanisms and daemons that generate cluster reconfiguration events, route the events through the cluster, and send them to interested clients.

The cl_apid daemon interacts with the clients. The Oracle Solaris Cluster Resource Group Manager (RGM) generates cluster reconfiguration events. This daemon uses syseventd to transmit events on each local node. The cl_apid daemon uses Extensible Markup Language (XML) over TCP/IP to communicate with interested clients.

The following diagram shows the flow of events between the CRNP components. In this diagram, one client is running on cluster node 2, and the other client is running on a computer that is not part of the cluster.

Figure 11-1  Flow of Events Between CRNP Components

image:Flow diagram showing how the CRNP works