Compaq ProLiant Cluster HA/F500 Administrator Guide

ProLiant Cluster HA/F500 for MA8000 Administrator Guide 5-1
COMPAQ CONFIDENTIAL
Writer: Woody Jernigan File Name: f-ch5
Codename: Chargers Part Number: 355220-006 Last Saved On: 7/26/02 2:53 PM
5
Managing the ProLiant Cluster HA/F500
Throughout the life of the cluster, you will encounter the need to improve
performance, upgrade hardware components, upgrade software, increase storage
capacity, restructure cluster groups, back up the cluster data, or monitor ongoing
activities. This chapter describes these management concepts as they pertain to
clusters. The chapter also details the utilities and programs used in the ongoing
management of the ProLiant Cluster HA/F500.
Cluster Management Concepts
The following sections provide information on various cluster management concepts.
Managing a Cluster Without Interrupting Cluster Services
At some time during the life of the cluster, you may need to perform an operation on
a cluster node that requires it to be powered off. Always use Cluster Administrator to
fail over (or at a minimum, bring offline) clustered applications before powering off
the server.
Managing a Cluster in a Degraded Condition
Due to the high-availability nature of clustering, applications and network clients
remain operational even while some cluster components do not. When the cluster is
in a degraded condition, it is important to follow this process:
1. Discover what caused the degradation.