Sun Cluster Module Basics

How to:

View Sun Cluster Module Information
Close the Sun Cluster module
Navigate Within the Sun Cluster Module
Navigate the Tree View
Get Online Help

About:

Sun Cluster Module Overview
Sun Cluster Module View
Tree View
Context Panel
Page Elements
Resource Terminology

Sun Cluster Module Tasks

How to View the Module Information

Open the Sun Management Center product.
Select the domain that contains the cluster nodes to be viewed.
Double-click the cluster node to display the Details view.
Double-click the Operating System item in the tree.
Double-click the Sun Cluster item in the tree.
The tree is expanded to show the items under Sun Cluster.

How to Monitor a Cluster With the Sun Cluster Module:

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Double-click the Sun Cluster item in the tree.
The tree is expanded to show the items under Sun Cluster.
Expand or double-click the item under Sun Cluster that you want to view.
After you make your selection, you see the table in the context panel.

How to Close the Sun Cluster Module

Click the Close button on the details panel.

How to Navigate Within the Module

To navigate from one view to another, double-click the item in the tree view.
To navigate to an item in the table within the context panel, use the scrollbar until you can view the item.

How to Navigate the Tree View

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The Sun Cluster module displays items (in a tree view) in the left pane of the Details tab. The Sun Cluster module displays data in the right pane in a context panel. The context panel presents information in tabular format. You navigate the tree view and portions of the context panel by clicking or double-clicking the turner and text to expand, collapse, or select items.

To expand/collapse an item:
Click the turner on the far left of the item, or double-click the item's text to the right of the item. When expanded, the item's sub-items are displayed. When collapsed, the item's sub-items are no longer displayed.
To select an item:
Double-click the text just to the right of the item. The context panel is updated to display the data for the selected item.

How to Get Online Help

For online help about the Sun Cluster module, place the cursor over the item in the tree view, and and press the menu mouse button to bring up the pop-up menu.
Select Help from the menu to see information on the selected item.

Note:
To get online help information for the Sun Management Center product, click the Help button.

Reference Topics

Sun Cluster Module Overview

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The Sun Cluster module provides a single interface to some of Sun Cluster's command-line monitoring features. The Sun Cluster module consists of the Agent that runs on each node in the cluster. The Sun Management Center server and the Sun Cluster module can run on any node.

The Sun Cluster module enables you to monitor and view cluster resources.

To administer a cluster, you still need to make use of the command-line utilities provided with Sun Cluster and the appropriate disk volume management software.

Sun Cluster Module View

When one of the following items is selected under Sun Cluster in the tree view, the Sun Cluster module context panel shows these results for each selection in tabular format:

Cluster - Information about cluster properties
Nodes - Information on each node in the cluster
Device Groups - Information on device groups in the cluster
Quorum Devices - Information on quorum devices within the cluster
Transports - Information on transports, adapters, and cables within the cluster
Resource Groups and Resources - Information on resources and resource groups, failover and scalable, within the cluster
Resource Types - Information on every registered resource type

Resource Terminology

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The Sun Cluster module monitors and displays information on the following cluster resource items. For complete information about resources, resource types, and resource groups - both failover and scalable refer to the Sun Cluster documentation.

Item	Description
Cluster	Two or more interconnected nodes sharing a Sun Cluster file system and configured to run failover, parallel, or scalable resources.
Cluster Node	A node that is configured to be a cluster member. It might or might not be a current member.
Logical Host	A group of resources that moves as a unit between cluster nodes. The resources include a collection of network host names and their associated IP addresses and application resources. Each logical host is mastered by one physical host at a time.
Mastered Object	An object that is under control of a node.
Resource	An instance of a resource type. Many resources of the same type can coexist, each resource with its own name and property values, so that many instances of the underlying application can run on the cluster.
Resource Group	A resource group is a container for resources. After you create a resource, you can populate it with resources. The collection of resources in a resource group is part of the resource group unit and moves as such when a failover occurs. Typically, related and interdependent resources are grouped. You can establish dependencies between resources that rely on each other (such as logical host and shared address).
Resource Type	Defines a resource that has been instrumented to be highly available and run under the control of the Resource Groups Manager.
Shared Address	A failover resource group that contains one or more resources that are only of the shared address resource type.
Scalable Service	A kind of resource group that contains a resource of the scalable service resource type. More than one node at a time can master this kind of resource group.

Page Elements
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The following describes the areas common to each page in Sun Cluster.

Panel - Contains buttons that refresh the current page and display the Sun Management Center online help.

Content Area - Contains items that are to be manipulated or displayed.

Tabbed Folder - Enables you to access other pages. A folder is open when the tab is highlighted.

Tree View - Usually found in the left pane of a tabbed details folder, it represents the hierarchical relationship among items being monitored in a cluster.
Context Panel - Found in the right pane of a tabbed details folder, it displays the data of a selected item from the tree view, usually in tabular format.

Tree View

The items in the left pane in the Browser Details tab are displayed in a tree view. The tree view is organized like the hierarchy of a file system. You can expand items to further sub-items by clicking the turner to the far left of the item. Sub-items appear indented beneath the items from which they are expanded.

After you have selected the Sun Cluster module, the top-level item in the tree view is Sun Cluster. Items that appear directly beneath Sun Cluster represent cluster resources, such as cluster nodes, resource types, resource groups, and so forth.

You can select only one item in the tree view at a time. When the tree view is first displayed, the top-level item is selected.

Context Panel

The context panel is the area in the right side of the Browser Details. This panel displays the data of a selected item in the tree view. The context panel displays data in a tabular format.

A scrollbar at the bottom of the context pane enables you to view all items. You can resize your browser to view more items as well. You can also resize columns and reorder them by dragging and dropping.