Administering Sun Cluster Overview

Sun Cluster's highly-available environment ensures that critical applications are available to end users. The system administrator's job is to make sure that Sun Cluster is stable and operational.

Familiarize yourself with the planning information in the Sun Cluster 3.1 Software Installation Guide and the Sun Cluster 3.1 Concepts Guide before beginning administration tasks. Sun Cluster administration is organized into tasks among the following manuals.

• Standard tasks, used to administer and maintain the cluster on a regular, perhaps daily basis. These tasks are described in this guide.

• Data service tasks, such as installation, configuration, and changing properties. These tasks are described in theSun Cluster 3.1 Data Service Planning and Administration Guide .

• Service tasks, such as adding or repairing storage or network hardware. These tasks are described in the Sun Cluster 3.1 Hardware Administration Manual.

For the most part, you can perform Sun Cluster administration tasks while the cluster is operational, with the impact on cluster operation limited to a single node. For those procedures that require that the entire cluster be shut down, schedule downtime for off hours, to impose minimal impact on the system. If you plan to take down the cluster or a cluster node, notify users ahead of time.