HP XC System Software Installation Guide Version 3.1
Table 3-3 Information Required by the cluster_config Utility
Description and User ActionItem
You are prompted to configure availability sets for improved availability of services if you
have installed and configured an availability tool (such as Serviceguard) as described in
“Task 9: Plan a Service Availability Strategy” (page 26).
If you are not prompted to configure availability sets and you expected to configure
availability sets, return to “Task 9: Plan a Service Availability Strategy” (page 26) and
ensure you followed all instructions.
Availability sets
A command-line menu is displayed which enables you to change the default node role
assignments and to add or remove an external Ethernet connection to any node.
See Appendix F (page 137) for node role definitions and for more information about using
the menu.
Node role assignments and
Ethernet connections
If root ssh keys already exist, you are prompted to regenerate them. If you regenerate the
ssh keys, you cannot run the ssh or pdsh commands to other client nodes until you
reimage them.
For this reason, HP recommends that you regenerate ssh keys so you can determine if all
nodes have successfully booted the new image.
ssh key regeneration
You are prompted to supply the number of NFS daemons to be run on the head node and
on any other NFS server within the system to support the number of NFS clients in the
system. A default is provided based on the number of nodes in the system.
Number of NFS daemons
If you have configured improved availability with Serviceguard, you are prompted to
supply the name of a quorum server or the full path to the device name of the lock LUN.
Quorum server or lock LUN
configuration for Serviceguard
clusters
One node in an HP XC system acts as an NTP server for all other nodes. By default, this
is the head node. All other nodes are NTP clients of this server, which is known as the
internal NTP server. All nodes in the system are synchronized to the head node.
You have the option to specify up to four external time servers or to use the default NTP
server on the head node.
NTP server configuration
If you assigned the avail_node_management role to a node in an availability set with
the head node, you are prompted to specify how you want to handle improved availability
for the dbserver service. You can choose between no improved availability or enabling
improved availability through an availability tool.
Improved availability of the
database server
For systems with a QsNet
II
interconnect, you are asked to supply the type of network. The
network type reflects the maximum number of ports the fabric topology can support, and
it is used to create the qsnet diagnostics database. See Appendix H (page 151) for
information about how to determine the QsNet
II
network type.
QsNet
II
network type
For systems with a QsNet
II
interconnect, you are asked to supply the number of node-level
and top-level switches in the configuration.
Enter the number of node level switches in your configuration
[1-32]:
Enter the number of top level switches in your configuration [0-32]:
Number of QsNet
II
node-level
and top-level switches
If you modified the default role assignments and assigned a login role to one or more
nodes, you are prompted to enter an LVS alias. This is the host name that users will use
to log in to the HP XC system.
If you assigned the login role to nodes in an availability set, you are prompted to specify
how you want to handle improved availability for the lvs director service. You can
choose between no improved availability or enabling improved availability through an
availability tool.
LVS alias
You are prompted to enable Web access to the Nagios monitoring application. HP
recommends that you enable Web access because it is the only mechanism with which you
can view the data collected by Nagios.
You will have to supply a password for the Nagios administration user. This password
does not have to match any other password you previously provided.
If you assigned the management_server role to the nodes in an availability set, you are
prompted to specify how you want to handle improved availability for the Nagios master
service. You can choose between no improved availability or enabling improved availability
through an availability tool.
Nagios configuration
48 Configuring and Imaging the System