Sun™ Cluster 3 Programming: Integrating Applications into the SunPlex™ Environment

List of Figures

Figure 1.1	Loosely coupled clusters	4
Figure 1.2	Tightly coupled clusters	5
Figure 1.3	HA clusters	7
Figure 1.4	Grid clusters	8
Figure 1.5	System availability versus cost of system or environment	11
Figure 1.6	Function used to calculate the mean availability of a given system	13
Figure 2.1	Global devices	24
Figure 2.2	GFS proxy layer	25
Figure 2.3	GFS with global devices	26
Figure 2.4	Failover file services via HAStoragePlus	27
Figure 2.5	Simple failover resource	29
Figure 2.6	Simple scalable resource	30
Figure 2.7	Resource relationships	31
Figure 3.1	Steps to create an agent using GDS	40
Figure 4.1	Using symbolic links to access global data	48
Figure 4.2	Symbolic links after directory recreation	49
Figure 4.3	Application monitoring flowchart	58
Figure 5.1	Creation page	66
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