HP XC System Software Administration Guide Version 3.1

and services for which no corresponding .ini file can be found are configured according to the
default.ini file.
Evaluate any new service regarding whether or not you need to create a service-specific service.ini
file with the appropriate parameters.
The default.ini file is available and may be suitable for new services. Review its contents to make sure
it is compatible with your new service before allowing the cluster_config utility to use it as the default
for your new service.
Example 4-2 shows the contents of the service.ini file.
Example 4-2 Sample service.ini FIle
[Config]
# Is the service included in the default configuration? [0/1]
service_recommended = 0 or 1
# How many nodes can each server handle optimally?
# (Use 1000000 if there should be only one server per system.)
optimal_scale_out = some_value
# Must the service be run on the head node? [0/1]
# Is it advantageous to run the service on the head node? [0/1]
# (No more than one of these should be 1.)
head_node_required = 0 or 1
head_node_desired = 0 or 1
# Must a server node have an external connection? [0/1]
# Is it advantageous for a server to have an external connection? [0/1]
# (No more than one of these should be 1.)
external_connection_required = 0 or 1
external_connection_desired = 0 or 1
# Does the service need exclusive use of its server? [0/1]
exclusivity_desired = 0 or 1
# If yes, a name to group other services to the same server
# exclusivity_group = some_name
Description of service.ini File Parameters
The parameters in the service.ini file are defined as follows:
service_recommended
Assigning 1 to this parameter indicates that the service is part
of the default configuration. Thus, the cluster_config
utility recommends the assignment of nodes to this service.
Alternately, assigning 0 means that the cluster_config
utility does not interpret the service as part of the default
configuration.
optimal_scale_out
Defines the number of nodes that this new service can serve
with optimal performance. The cluster_config utility
divides the total number of nodes in the HP XC system by this
value to obtain the number of server nodes for this service.
Specify 1000000 (1 million) if scaling is not a factor.
head_node_required
Assigning 1 to this parameter indicates that the service must
run on the head node.
Assigning 0 indicates that the service does not need to run on
the head node.
Description of service.ini File Parameters 69