HP XC System Software Administration Guide Version 2.1

• Number of CPUs
•Memorysize
• Number of ports
1. Prepare the replacement node hardware as described in the HP XC System Software
Hardware Preparation Guide. Note the following requirements for each replacement node:
• The node must be set to boot from the network.
• The console p ort (cp) is set to request IP addre
sses throug h DHCP.
• The nod e’s po wer must be turned off.
2. Log in as superuser on the head node.
3. If your system is an XC4000, set the node to be
replaced to boot from the network:
# setnode --resync n3
4. Perform the following steps if the pow er for the node to be replaced is currently on:
a. Issue the following command to prevent any further job scheduling on the n ode to
be replaced:
# scontrol update NodeName=n3 State=draining
Reason="Maintenance"
b. Invoke the stopsys comm and to shut down th
e n ode gracefully:
# stopsys n3
5. Remove the faulty node from the HP XC syst
em.
Note the ports for the Ethernet and system interconnect cables.
6. Add the replacement node to the HP XC system.
Ensure that you reconnect the Ethernet a
nd system interconnect cables to their respective
ports and that you connect the power cabl
e.
7. Enter the following command to force the discovery of the MAC address of the
replacement node’s boot interface:
# /opt/hptc/config/sbin/discover --replacenode=n3
8. Run the HP XC Syst em configu ration uti
lity:
# /opt/hptc/config/sbin/cluster_config --verbose
_______________________ Note _______________________
The cluster_config utility re-images nodes and assigns roles to nodes
on th e HP XC system. This ov erwrites any customizations that have no t
been included in the golden image.
9. Turn on the replacement node’s pow
er:
# startsys n3
10. Return t he no de to service:
# scontrol update NodeName=n3 St
ate=idle
Servicing the HP XC System 17-3