HP XC System Software Administration Guide Version 3.2

head_node_desired
Assigning 1 to this parameter indicates that running
the service on the head node is beneficial but not
necessary.
Assigning 0 indicates that the service does not benefit
from running on the head node.
Do not assign 1 to both the head_node_required
and head_node_desired parameters. If you assign
1 to the head_node_desired parameter, assign 0
to the head_node_required parameter.
external_connection_required
Assigning 1 to this parameter indicates that the
service requires an external connection.
Assigning 0 indicates the service does not require an
external connection.
Do not assign 1 to both the
external_connection_required and
external_connection_desired parameters. If
you assign 1 to the
external_connection_required parameter,
assign 0 to the external_connection_desired
parameter.
external_connection_desired
Assigning 1 to this parameter indicates that an
external connection is beneficial, but not necessary.
Assigning 0 indicates the service does not require an
external connection.
Do not assign 1 to both the
external_connection_required and
external_connection_desired parameters. If
you assign 1 to the
external_connection_desired parameter,
assign 0 to the external_connection_required
parameter.
exclusivity_desired
Assign 1 to this parameter if the service requires the
exclusive use of a node. If so, you must also specify
the exclusivity_group parameter.
Assign 0 if the service does not need the exclusive
use of nodes.
exclusivity_group
Provide a name for the nodes for the service. The
name is an alphanumeric identifier (underscore
characters are permitted), but it must begin with an
alpha character.
Services specifying the same exclusivity group name
are assigned to the same node or nodes from the
correspondingly named group of exclusive nodes.
The [A]nalyze menu option of the cluster_config utility examines the parameters for each
service.ini file and generates a report similar to the following:
[L]ist Nodes, [M]odify Nodes, [A]nalyze, [H]elp, [P]roceed, [Q]uit: A
Recommended Cluster Configuration
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3 Total nodes
4.6 Customizing Services and Roles 75