Serviceguard NFS Toolkit A.11.11.06, A.11.23.05 and A.11.31.05 Administrator's Guide

6 Sample Configurations for Modular Package
This chapter explains how to create sample configuration files for Serviceguard NFS modular
package. It gives sample cluster configuration files and package configuration files for the
following configurations:
• Example One - Three-Server Mutual Takeover: This configuration has three servers and
three Serviceguard NFS packages. Each server is the primary node for one package and an
adoptive node for the other two packages.
• Example Two - One Adoptive Node for Two Packages with File Lock Migration: This
configuration has two packages, each owned by a different server. A third server is the
adoptive node for both packages. This sample configuration uses the package control option,
which prevents the adoptive node from adopting more than one package at a time. This
sample configuration also enables the File Lock Migration feature.
• Example Three - Three-Server Cascading Failover: This configuration has three servers
and two packages. One server is the primary node for both packages, and the other two
servers are adoptive nodes for both packages.
• Example Four - Two Servers with NFS Cross-Mounts: This configuration has two servers
and two packages. The primary node for each package NFS-mounts the file systems from
its own package and the other package.
The sample configuration files in this chapter show only the configured values. Most of the
comments are omitted.
Example One - Three-Server Mutual Takeover
This configuration has three servers and three Serviceguard NFS packages. Each server is the
primary node for one package and an adoptive node for the other two packages. Figure 6-1
illustrates this configuration. Dotted lines indicate which servers are adoptive nodes for the
packages.
Example One - Three-Server Mutual Takeover 87