HP XC System Software Installation Guide Version 3.0

2
In this example, the maximum number of nodes supported by the interconnect switch is 16.
Enter the maximum number of nodes allowed by your interconnect switch.
3
The internal host name of the head node is based on the default node naming prefix and the
maximum number of nodes in the system. Therefore, as shown in this example, the head node
host name is set to n16.
4. Restart the X server to accommodate the head node host name change:
a. Press Ctrl+Alt+Backspace to restart the X server.
b. Log back in to the system as the root user.
c. Open a terminal window from the Gnome desktop:
i. From the Applications menu, select the System Tools menu.
ii. Scroll down the list of options, and select Terminal to open a terminal window.
d. Go back to the configuration directory:
# cd /opt/hptc/config/sbin
Task 4: Run the discover Command to Discover System Components
The second step in the configuration process is the discovery of all system components. In addition to
configuring the system topology by discovering all hardware components, the discover command also
configures the administration network and interconnect, starts the MySQL service, and initializes the system
configuration database.
1. Begin this procedure as the root user on the head node.
2. Enter the following command to capture command output into a file; this step is optional:
# script your_filename
3. Start the automatic discovery of all network components in your system:
# ./discover --system [--super] [--oldmp] [--outfile file_name] \
[--ic=AdminNet] [--verbose]
Notes About the discover Command Line
• The --super option is required for large-scale systems (systems with up to 1024 compute nodes)
with a hardware configuration that consists of a Super Root Switch into which multiple Root
Administration Switches are connected.
• The --oldmp option is required for Itanium-based systems because their management processors
(MPs) have statically set IP addresses and are not configured to use DHCP.
Do not include the --oldmp option on the command line for Opteron- or Xeon-based systems
because those systems use iLO and LO-100i as their console port management devices, and as
a result, should be using DHCP to obtain their IP addresses.
• Use --outfile file_name to save a copy of the HP XC system information that will be written
to the system management database. You must supply an existing file name on the head node in
which to save the information.
Specifying [--outfile file_name] enables you to use the --infile file_name option
should it become necessary to restore the HP XC system to the point in the installation just after
the discover command was run but before the cluster_config utility is run.
However, if any MAC addresses have changed in the system since the time the first discover
command was run, it may be better to perform a new full discovery process. You can modify the
changed MAC addresses in your saved file, but do so carefully.
The --verbose option is the only other valid option on the discover command line when the
[--infile file_name] option is used.
• Use the --ic=AdminNet option only if you are configuring the interconnect on the administration
network. When the interconnect is configured on the Administration Network, a single LAN is
used; the administration network and the interconnect share the same ports and switches. All other
interconnect types (Myrinet, InfiniBand, and Quadrics®) are discovered automatically based on
Task 4: Run the discover Command to Discover System Components 41