Introduction to Administering Sun Cluster

This chapter provides information on preparing to administer the cluster and the procedures for using Sun Cluster administration tools.

• How to Log In to Sun Cluster Remotely

• How to Access the scsetup Utility

• How to Display Sun Cluster Release and Version Information

• How to Display Configured Resource Types, Resource Groups, and Resources

• How to Check the Status of Cluster Components

• How to Check the Status of the Public Network

• How to View the Cluster Configuration

• How to Validate a Basic Cluster Configuration

• How to Check the Global Mount Points

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 Software Installation Guide for Solaris OS and the Sun Cluster Concepts Guide for Solaris OS 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 the Sun Cluster Data Services Planning and Administration Guide for Solaris OS.

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

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.

Administration Tools

You can perform administrative tasks on Sun Cluster by using a Graphical User Interface (GUI) or by using the command-line. The following section provides an overview of the GUI and command-line tools.

Graphical User Interface

Sun Cluster supports Graphical User Interface (GUI) tools that you can use to perform various administrative tasks on your cluster. These GUI tools are SunPlex™ Manager and, if you are using Sun Cluster on a SPARC based system, Sun Management Center. See Chapter 10, Administering Sun Cluster With the Graphical User Interfaces for more information and for procedures about configuring SunPlex Manager and Sun Management Center. For specific information about how to use these tools, see the online help for each GUI.

Command-line Interface

You can perform most Sun Cluster administration tasks interactively through the scsetup(1M) utility. Whenever possible, administration procedures in this guide are described using scsetup.

You can administer the following Main Menu items through the scsetup utility.

• Quorum

• Resource groups

• Cluster interconnect

• Device groups and volumes

• Private hostnames

• New nodes

• Other cluster properties

You can administer the following Resource Group Menu items through the scsetup utility.

• Create a resource group

• Add a network resource to a resource group

• Add a data service resource to a resource group

• Online/Offline or Switchover a resource group

• Enable/Disable a resource

• Change properties of a resource group

• Change properties of a resource

• Remove a resource from a resource group

• Remove a resource group

• Clear the stop_failed error flag from a resource

Table 1-1 lists other commands that you use to administer Sun Cluster. See the man pages for more detailed information.

Table 1-1 Sun Cluster Command-Line Interface Commands