HP XC System Software Installation Guide Version 4.0

b. If you are configuring services for improved availability, read the information in
Table 1-2 (page 31) to ensure that you assign the appropriate roles to the nodes in
availability sets so that service failover can occur.
c. If you plan to configure an external Ethernet connection on any node, you must assign
the external role to that node.
d. By default, the head node is assigned with the console_network and
management_hub roles. You have the flexibility to assign the console_network and
management_hub roles to multiple nodes and HP recommends that you consider using
one management hub for every 64 to 128 nodes.
However, on systems with more than 256 nodes, HP recommends that you remove the
console_network and management_hub roles from the head node so that the
management hub activity does not interfere with the services that only run on the head
node.
4. Use the Modify Nodes and Analyze options on the cluster_config command-line
menu to adjust the role assignments and create an external Ethernet connection on any node,
if required.
If you installed remote graphics software (such as HP RGS or Virtual GL), you must configure
the external Ethernet devices (the external NICs) on the SVA nodes.
See Appendix G (page 223) for information about how to use the menu options, how to assign
node roles, and how to configure external Ethernet connections on a node.
5. When you are satisfied with the role assignments and external Ethernet configuration, enter
the letter p to apply the configuration to the system:
[L]ist Nodes, [M]odify Nodes, [A]nalyze, [H]elp, [P]roceed, [Q]uit: p
Do you want to apply your changes to the cluster configuration? [y/n] y
6. Do one of the following when this prompt appears:
[S]ervices Config, [P]roceed, [Q]uit:
• Enter the letter s to perform customized services configuration. This option is intended
for experienced XC administrators who want to customize role services. Intervention
like this is typically not required for HP XC systems. HP recommends that you enter p
to continue with the system configuration process and proceed to Section 6.5 (page 105).
NOTE: If you are an experienced HP XC administrator, see Section G.7 (page 227) for
more information about customizing the services configuration.
• Enter the letter p to continue with the system configuration process.
When the system configuration process begins, the configuration and management
database is not consistent and complete again until after cluster_config processing
is complete. Therefore, do not press Ctrl-c during this time.
• Enter the letter q to exit from the system configuration process. The following prompt
appears to give you the option to save your responses to the configuration and
management database:
Do you want to apply your changes to the cluster configuration? [y/n] y
Proceed to Section 6.5 (page 105) to respond to the remainder of the system configuration questions.
6.5 Responding to cluster_config Questions
This section shows the output from the cluster_config utility and describes how to respond
to each configuration question. If you configured availability sets, you are prompted to specify
how you want to configure each service for improved availability.
6.5 Responding to cluster_config Questions 105