HP Insight Cluster Management Utility v7.1 User Guide

In the HP Insight CMU implementation, the compute nodes share the operating system on the HP
Insight CMU management node. Each compute node has its own read/write directory hosted on
the administration server. Each time a compute node starts, it mounts most of the operating system
through NFS as read-only and its own directory through NFS as read/write. Each client has its
own read/write directory so that one client cannot affect another.
The exported operating system is copied from a third node, referred to as the golden node, that
you must install with the same system release as the management node. After the installation is
complete, the golden node can also be started from the network as a compute node.
4.8.2 Operating systems supported
HP Insight CMU v7.1 supports the diskless functionality on Red Hat Enterprise Linux (RHEL)5.2,
RHEL5.3, RHEL5.4, RHEL6.0, RHEL6.1; and SUSE Linux Enterprise Server (SLES)10 SP2 and SLES11.
4.8.3 Installing the operating system on the management node and the golden node
IMPORTANT: The cluster must be homogeneous. Use the same distribution to install the HP Insight
CMU management node and the golden node.
Install the operating system on the management node and on the golden node. In addition to the
prerequisites described in “Install required RPMs” (page 131), the following prerequisites must be
met:
On the management node
Install the rpm file system-config-netboot-cmd-cmu-0.1.45.1_X-Y.noarch.rpm.
IMPORTANT: This package is delivered in the HP Insight CMU CD. Do not use any other
system-config-netboot package from the OS distribution.
NOTE: For SLES 10 only, install the python-xml rpm from the software distribution.
On the golden node
Install the following prerequisites on the golden node:
NOTE: Package names may vary depending on the OS distribution.
• busybox
• busybox-anaconda (RHEL5 only)
• dhclient (dhcp-client on SLES)
• bind-utils (not required on SLES)
4.8.4 Modifying the TFTP server configuration
1. Install TFTP on the head node.
2. Start TFTP on the head node.
3. Modify /etc/xinetd.d/tftp as follows:
# default: off
# description: The tftp server serves files using the trivial file transfer \
# protocol. The tftp protocol is often used to boot diskless \
# workstations, download configuration files to network-aware printers, \
# and to start the installation process for some operating systems.
service tftp
{
disable = no
socket_type = dgram
protocol = udp
wait = yes
56 Provisioning a cluster with HP Insight CMU