HP Insight Cluster Management Utility - Manual (Page 70)

2. Save and exit the file.
3. Restart the HP Insight CMU server:
# /etc/init.d/cmu restart
Also restart the HP Insight CMU GUI.
5.8.2 The system-config-netboot diskless method
The HP Insight CMU system-config-netboot diskless method implements a diskless feature
to build diskless clusters derived from Red Hat.
In the HP Insight CMU system-config-netboot implementation, the compute nodes share a
common operating system from the NFS server, which by default is the HP Insight CMU management
node. Each compute node has its own read-write directory hosted on the NFS 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, the golden
node, which must be installed with the same Linux OS version as the management node. After the
installation is complete, the golden node can also be started from the network as a compute node.
HP recommends that you backup the golden node image, so that it can be restored later if necessary.
5.8.2.1 Operating systems supported
The system-config-netboot method in HP Insight CMU v7.2 supports the diskless functionality
on Red Hat Enterprise Linux (RHEL)5.2, RHEL5.3, RHEL5.4, RHEL6.x; and SUSE Linux Enterprise
Server (SLES)11.
5.8.2.2 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
“Installation procedures” (page 22) , 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.
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)
5.8.2.3 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:
70 Provisioning a cluster with HP Insight CMU