5 activating the diskless feature, 6 populating the hp insight cmu database, 7 creating a diskless image – HP Insight Cluster Management Utility User Manual
Page 57: 8 creating a diskless logical group
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
4.8.5 Activating the diskless feature
1.
Edit /opt/cmu/etc/cmuserver.conf to activate CMU_DISKLESS:
#cmu diskless feature true/false
CMU_DISKLESS=true
2.
Restart the HP Insight CMU server:
# /etc/init.d/cmu restart
4.8.6 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
“Configuring additional NFS servers” (page 63)
, then return
to this section.
Register nodes into the HP Insight CMU database using the scan-node process, as described in
4.8.7 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 81)
4.8.8 Creating a diskless logical group
From the GUI
1.
In the Logical Group Management window, click the Add button.
2.
Add a new logical group.
4.8 HP Insight CMU diskless environments
57