Managing HP Serviceguard for Linux Ninth Edition, April 2009

redundant. For more information, see
“Controlling Access to the Cluster” (page 176).
MAX_CONFIGURED_PACKAGES This parameter sets the maximum number of
packages that can be configured in the cluster.
The minimum value is 0, and the maximum
value, which is also the default, is 300.
Can be changed while the cluster is running.
Cluster Configuration: Next Step
When you are ready to configure the cluster, proceed to “Configuring the Cluster”
(page 171). If you find it useful to record your configuration ahead of time, use the
Cluster Configuration worksheet (page 314).
Package Configuration Planning
Planning for packages involves assembling information about each group of highly
available services.
NOTE: As of Serviceguard A.11.18, there is a new and simpler way to configure
packages. This method allows you to build packages from smaller modules, and
eliminates the separate package control script and the need to distribute it manually;
see Chapter 6: “Configuring Packages and Their Services ” (page 189), for complete
instructions.
This manual refers to packages created by the newer method as modular packages,
and to packages created by the older method as legacy packages.
The discussion that follows assumes you will be using the modular method. For
information and instructions on creating and maintaining legacy packages, see
“Configuring a Legacy Package” (page 252).
The document Framework for HP Serviceguard Toolkits provides a a guide to integrating
an application with Serviceguard, and includes a suite of customizable scripts intended
for use with legacy packages. This document is included in the Serviceguard Developer’s
Toolbox, which you can download free of charge from
http://www.hp.com/go/softwaredepot.
NOTE: As of the date of this manual, the Framework for HP Serviceguard Toolkits deals
specifically with legacy packages.
Logical Volume and File System Planning
Use logical volumes in volume groups as the storage infrastructure for package
operations on a cluster. When the package moves from one node to another, it must
still be able to access the same data on the same disk as it did when it was running on
118 Planning and Documenting an HA Cluster