Managing Serviceguard Nineteenth Edition, Reprinted June 2011

the documents listed under “Cross-Subnet Configurations”
(page 29) 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)”
(page 82), 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 ” (page 216)) and these in turn must
exactly match the hostname portion of the name specified
in the node’s networking configuration. (Using the above
example, ftsys9 must appear in exactly that form in the
cluster configuration and package configuration files, and
as ftsys9.cup.hp.com in the DNS database).
The parameters immediately following NODE_NAME in this
list (SITE, NETWORK_INTERFACE, HEARTBEAT_IP,
STATIONARY_IP, CLUSTER_LOCK_LUN,
FIRST_CLUSTER_LOCK_PV,
SECOND_CLUSTER_LOCK_PV, CAPACITY_NAME, and
CAPACITY_VALUE) apply specifically to the node identified
by the preceding NODE_NAME entry.
SITE The name of a site (defined by SITE_NAME) to which the
node identified by the preceding NODE_NAME entry belongs.
Can be used only in a site-aware disaster-tolerant cluster,
which requires Metrocluster (additional HP software); see
the documents listed under “Cross-Subnet Configurations”
(page 29) for more information.
If SITE is used, it must be used for each node in the cluster
(that is, all the nodes must be associated with some defined
site, though not necessarily the same one).
If you are using SITEs, you can restrict the output of
cmviewcl (1m) to a given site by means of the -S
<sitename> option. In addition, you can configure a
site_preferred or
site_preferred_manualfailover_policy (page 226)
for a package.
108 Planning and Documenting an HA Cluster