Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Building a Metropolitan Cluster Using MetroCluster/CA
Overview of MetroCluster/CA
Chapter 370
Overview of MetroCluster/CA
MetroCluster is a set of scripts and environmental file that work in an
MC/ServiceGuard cluster to automate failover to alternate nodes in the
case of disaster in metropolitan cluster. The MetroCluster/CA product
contains the following files.
Table 3-1 MetroCluster/CA Template Files
Name Description
/opt/cmcluster/toolkit/SGCA/xpca.env The MetroCluster/CA environmental file.
This file must be customized for the specific
Disk Array XP Series and HP 9000 host
system configuration. Copies of this file must
be customized for each separate
MC/ServiceGuard package.
/opt/cmcluster/toolkit/SGCA/Samples A directory containing sample convenience
shell scripts that must be edited before
using. These shell scripts may help to
automate some configuration tasks. These
scripts are contributed, and not supported.
This directory also contains sample Raid
Manager configuration files and other
examples.
/usr/sbin/DRCheckDiskStatus The executable module that checks for a
specific environment file in the package
directory and should not be edited.
/usr/sbin/DRCheckXPCADevGrp The program that checks the status of the
XP/CA device group that is used by the
package.
/usr/sbin/DRMonitorXPCADevGrp The program that monitors the status of the
XP/CA package devicegroup, sends
notification, and performs pre-defined
actions on the device group.