HP XC System Software Installation Guide Version 2.1

Reinstalling An XC System with Version 2.1

This appen dix describes how to reinstall HP X C System Software Version 2.1 on a system

that is already running Version 2.1.

Reinstalling an XC system with the same release may be necessary if you participated as a

field test site of an advance developm ent kit.

The procedure differs depending up on your cluster platform architecture:

• Opteron- o r Xeon-based (Section K.1)

• Itanium-based systems (Section K.2)

K.1 Reinstalling Opteron- or Xeon-Based Systems

The information in this section d escribes the following tasks:

• How to reinstall the entire system (Section K.1.1)

• How to reinstall one or more nod es (Section K.1.2)

K.1.1 Reinstalling the Entire System

Follow this procedure to reinstall Opteron- or Xeon -based systems with HP XC System

Software Version 2.1:

1. Begin this procedure as the root user on the head node.

2. Ensure that all jobs are drained from all nodes, where nodelist represents the entire set

of client nodes (for example, n[1–64]):

# scontrol update NodeName=nodelist State=DRAIN Reason="system shutdown"

3. Shut down all nodes:

# stopsys

4. Insert the XC Version 2.1 DVD distribution media in the DV D tray on the head node.

5. Reboot the head node to start the Kickstart installation:

# reboot

6. Follow the instructions in this manual, beginning with Ch a pter 3, to comp lete the system

installation.

K.1.2 Reinstalling One or More Nodes

Follow this procedu re t o r einstall o ne or more Opteron- or Xeon-based clien t nodes f ro m the

latest golden image on the image server. This procedure sets the specified nodes to network boot

from the DHCP serv er and automa ti cally starts a reinstallation o peration on the specified nodes

by temporarily removing the appropriate local boot file in the /tftpboot/pxelinux.cfg

directory for each node to be reinstalled. This example assumes nodes n1 through n5 are

being reinstal led.

1. Begin this procedure as the root user on the head node.

2. Ensure that all jobs are drained from the affected nodes:

# scontrol update NodeName=n[1-5] State=DRAIN Reason="system shutdown"

Reinstalling An XC System with Versio n 2.1 K-1