Managing HP Serviceguard for Linux Ninth Edition, April 2009

3 Understanding Serviceguard Software Components
This chapter gives a broad overview of how the Serviceguard software components
work. It includes the following topics:
• Serviceguard Architecture
• How the Cluster Manager Works (page 42)
• How the Package Manager Works (page 49)
• How Packages Run (page 61)
• How the Network Manager Works (page 71)
• Volume Managers for Data Storage (page 83)
• Responses to Failures (page 88)
If you are ready to start setting up Serviceguard clusters, skip ahead to Chapter 4,
“Planning and Documenting an HA Cluster.”
Serviceguard Architecture
The following figure shows the main software components used by Serviceguard for
Linux. This chapter discusses these components in some detail.
Serviceguard Architecture 37