Serviceguard NFS Toolkit A.11.11.06, A.11.23.05 and A.11.31.08 Administrator's Guide (October 2011)

5 Sample Configurations for Legacy Package
This chapter explains how to create sample configuration files for Serviceguard NFS legacy
package. It 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 14
illustrates this configuration. Dotted lines indicate which servers are adoptive nodes for the packages.
Example One - Three-Server Mutual Takeover 63