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Hardware Management Console Best Practices

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7.7.2 Network Installation/Update/Backup/Restore

Beginning with Version 5 Release 1.0, you can select the integrated network

adapter in your HMC as a start-up or IPL device. This will allow the HMC to

contact a remote system that supports PXE requests to perform installs, upgrades,

backups or restore operations on the HMC. The remote system will need to have

DHCP, TFTP and NFS servers running. To perform a secure backup/restore

operation over the network, the remote system also needs to have an OpenSSH

server running.

7.7.3 Server setup

The following describes the steps to set up a system to accept PXE boot requests

from an HMC. In this example, the system is running SuSE 9.2.

• Make sure that tftp, dhcp and nfs servers are running on the system. Many

gateways by default block dhcp and tftp access. To avoid these issues, it is

recommended that the system and HMC be connected to the same switch, and

that the switch permit dhcp and tftp.

• Create the directory /var/tftp. This directory is the default directory used by

tftp daemon and is specified in the /etc/xinetd.d/tftp configuration file.

• Setup the /etc/dhcpd.conf with the allow bootp and allow booting options.

An example of /etc/dhcpd.conf follows:

allow bootp;

allow booting;

ddns-update-style none;

default-lease-time 14400;

max-lease-time 172800;

subnet 192.168.1.0 netmask 255.255.255.0 {

range 192.168.1.100 192.168.1.200;

option routers 192.168.1.1;

option domain-name "mycompany.com";

option domain-name-servers 192.168.1.1;

filename "pxelinux.0";

}

In the above file, the system is setup to accept PXE requests and will serve IP

address between the range of 192.168.1.100 and 192.168.1.200. The file

pxelinux.0 will be the initial boot file loaded by the client, in this case the HMC.

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Do+Able Products 12347 Manual de usuario Pagina 41