HP XC System Software Release Notes for Version 3.1

5 System Configuration
This chapter contains information about configuring the system. Notes that describe additional
configuration tasks are mandatory and have been organized chronologically. Perform these tasks
in the sequence presented in this chapter.
The HP XC system configuration procedure is documented in the HP XC System Software
Installation Guide.
5.1 Notes That Apply Before You Invoke the cluster_prep Utility
Read the notes in this section before you invoke the cluster_prep utility.
5.1.1 Use Alphabetic Characters in Node Naming Prefix
The cluster_prep utility prompts you supply the node naming prefix to use for the node
naming convention; the default is the letter n.
The HP XC System Software Installation Guide states that the node prefix must end with an
alphabetic character. However, the documentation does not mention that the node prefix must
also begin with an alphabetic character. Therefore, if you decide to use a node naming prefix
other than the default, make sure the node prefix you supply begins and ends with an alphabetic
character.
5.1.2 Required Task for Some NIC Adapter Models: Verify Correct NIC Device
Driver Mapping
On head nodes installed with dual-fiber NIC server adapter models NC6170 or NC7170, Ethernet
ports might be reordered between the Kickstart kernel and the subsequent HP XC kernel reboot.
Use the procedure described in this section to correct the mapping if a re-ordering has occurred.
At the time of the Kickstart installation, the fiber ports are identified as eth0 and eth1, and the
onboard ports are identified as eth2 and eth3.
The /etc/modprobe.conf file is written as follows:
• alias eth0 e1000
• alias eth1 e1000
• alias eth2 tg3
• alias eth3 tg3
You must correct this mapping if you find that upon the HP XC kernel reboot, eth0 and eth1 are
the tg3 devices, and eth2 and eth3 are the e1000 devices. To get the external network connection
working, perform this procedure from a locally-connected terminal before invoking the
cluster_prep utility:
1. Unload the tg3 and e1000 drivers:
# rmmod e1000
# rmmod tg3
2. Use the text editor of your choice to edit the /etc/modprobe.conf file to correct the
mapping of drivers to devices. The section of this file should look like this when you are
finished:
alias eth0 tg3
alias eth1 tg3
alias eth2 e1000
alias eth3 e1000
3. Save your changes and exit the text editor.
5.1 Notes That Apply Before You Invoke the cluster_prep Utility 39