HP XC System Software Release Notes for Version 3.0

5 Configuration Notes
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 Chapter 4 in the HP XC System
Software Installation Guide.
5.1 Tasks to Perform Before Running the cluster_prep Utility
Perform the tasks described in this section before you run the cluster_prep utility.
5.1.1 Required Task for Some NIC Adapter Models: Correct NIC Device Driver
Mapping
On head nodes installed with dual-fiber NIC server adapter models NC6170 or NC7170, Ethernet
ports are reordered between the Kickstart kernel and the subsequent HP XC kernel reboot. 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
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, follow this procedure from a
locally-connected terminal before running 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 file.
4. Use the text editor of your choice to edit the
/etc/sysconfig/network-scripts/ifcfg-eth[0,1,2,3] files, and remove the
HWADDR line from each file if it is present.
5. If you made changes, save your changes and exit each file.
6. Follow the instructions in the HP XC System Software Installation Guide to complete the cluster
configuration process (beginning with the cluster_prep command).
5.2 Node Name Prefix Cannot Contain a Hyphen
Do not include a hyphen (-) or a period (.) in the node naming prefix. The cluster_prep
command prompts you to define the node naming prefix.
The node name prefix can contain up to six alphanumeric characters (the letters a through z, A
through Z, and the numbers 0 through 9). The last character in the node name must be alphabetic.
5.1 Tasks to Perform Before Running the cluster_prep Utility 31