Serviceguard NFS Toolkit A.11.31.02, A.11.11.06, and A.11.23.05 Administrator's Guide

3 Sample Configurations
This chapter gives sample cluster configuration files, package configuration files, and
control scripts 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 3-1 illustrates this configuration. Dotted lines indicate which servers are adoptive
nodes for the packages.
Example One - Three-Server Mutual Takeover 41