HP XC System Software Installation Guide Version 3.2.1

Continue? [y/n] y
Node: n12 location: Level 1 Switch 172.20.65.1, Port 18
Roles assigned: compute
Node: n11 location: Level 1 Switch 172.20.65.1, Port 17
Roles assigned: compute
NOTE: If the hardware configuration contains HP server blades and enclosures, the
node's enclosure location is provided:
Node: n11 location: Enclosure n-enc00110a881340
Roles assigned: compute
3. Do the following to determine whether you have to modify the default role assignments:
a. See Appendix F (page 199) for a description of the default role assignments based on
system size.
Read about the special considerations regarding the default role assignments to
determine if the role assignments are suitable for your environment. If you do not
modify the role assignments, the system will be configured with the default assignments.
b. If you are configuring services for improved availability, read the information in
Table 1-2 (page 30) 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 207) 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
3.10 Task 9: Modify and Assign Node Roles 91