Managing Serviceguard Fifteenth Edition, reprinted May 2008

Planning and Documenting an HA Cluster
Cluster Configuration Planning
Chapter 4 159
NOTE Lock volume groups must also be defined in
VOLUME_GROUP parameters in the cluster configuration
file.
SITE_NAME The name of a site to which nodes (see NODE_NAME)
belong. Can be used only in a site-aware
extended-distance cluster, which requires
additional software; see the documents listed under
“Cross-Subnet Configurations” on page 41 for more
information.
You can define multiple SITE_NAMEs. SITE_NAME
entries must precede any NODE_NAME entries See also
SITE.
NODE_NAME The hostname of each system that will be a node in the
cluster.
CAUTION Make sure that the node name is unique within the
subnets configured on the cluster nodes; under some
circumstances Serviceguard may not be able to detect a
duplicate name and unexpected problems may result.
Do not use the full domain name. For example, enter
ftsys9, not ftsys9.cup.hp.com. A Serviceguard
cluster can contain up to 16 nodes (though not in all
third-party configurations; see “Veritas Cluster Volume
Manager (CVM)” on page 120, and the latest Release
Notes for your version of Serviceguard).
IMPORTANT Node names must be 39 characters (bytes) or less, and
are case-sensitive; for each node, the NODE_NAME in the
cluster configuration file must exactly match the
corresponding node_name in the package configuration
file (see Chapter 6, “Configuring Packages and Their
Services,” on page 275) and these in turn must exactly
match the hostname portion of the name specified in
the node’s networking configuration. (Using the above