How to Use Topology to Monitor and Update Your Cluster

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The Topology view helps you monitor your cluster and identify problems. You can quickly view relationships between objects and see which resource groups and resource belong to each node.

To get to the Topology page, log into the GUI, click Resource Groups, and click the Topology tab. Lines represent dependency and colocation relationships. The online help provides detailed instructions on the elements of the view, as well as how to select an object for filtering the view, and right-clicking to see a context menu of actions for that object. You can collapse or restore the online help by clicking the arrow next to it. You can also collapse or restore the Filter.

The following table provides a list of the controls on the Resource Topology page.

Control	Function	Description
	Zoom	Magnify or shrink a portion of a page.
	Overview	Drag the viewport over the diagram to pan the view.
	Isolate	Single-click a resource group or resource to remove all other objects from the display.
	Drill	Single-click a resource group to drill into its resources.
	Reset	Return to full view after isolating or drilling.
	Filter	Narrow what appears by selecting objects by type, instance, or status.

The following procedure shows how to monitor your cluster nodes for critical errors:

In the Topology tab, locate the Potential Masters area.
Zoom in to see the status of each node in the cluster.
Locate a node that has a red Critical status icon and right-click the node and select Show Details.
From the node's Status page, click System Log to view and filter the log messages.