4 populating the hp insight cmu database, 5 creating a diskless image, 6 creating a diskless logical group – HP Insight Cluster Management Utility User Manual
Page 71
# 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
user = root
server = /usr/sbin/in.tftpd
server_args = /tftpboot /opt/cmu/ntbt/tftp -v
per_source = 11
cps = 100 2
flags = IPv4
}
4.
Restart xinetd to reload the TFTP configuration.
# /etc/init.d/xinetd restart
5.8.2.4 Populating the HP Insight CMU database
IMPORTANT:
If your cluster contains more than 256 diskless nodes, then HP recommends that
you configure additional NFS servers before proceeding to this section. To configure additional
NFS servers, follow the instructions in
“Scaling out an HP Insight CMU diskless solution with multiple
, then return to this section.
Register nodes into the HP Insight CMU database using the scan-node process, as described in
5.8.2.5 Creating a diskless image
1.
Verify the golden node is running.
2.
Verify you have enough space on your head node in /opt/cmu/image to contain a copy
of all local file systems currently mounted on your golden node.
3.
To configure ssh passwordless between your head node and your compute node for the root
user, add the content of /root/.ssh/id_rsa.pub on the administration server into the
/root/.ssh/authorizedKeys
file on the golden node.
# /opt/cmu/tools/copy_ssh_keys.exp ip_golden_node
Enter the root password (not echoed).
4.
If you want to use monitoring, you must install the compute node monitoring rpm on the golden
node before creating the diskless logical group.
5.
To avoid collectl disk I/O operation, if you want to use the collectl option for
monitoring, verify that collectl is configured to not log to the disk. For details, see
and starting collectl on compute nodes” (page 100)
5.8.2.6 Creating a diskless logical group
From the GUI
1.
In the Logical Group Management window, click the Add button.
2.
Enter the new logical group name.
5.8 HP Insight CMU diskless environments
71