Configuration and Tuning GPFS for Digital Media Environments

Appendix A. Basic infrastructure configuration additions 213

implicit 0

display message

prompt 1

timeout 200

notice 2

It is also possible to use a dedicated configuration for specific IP addresses. If

you like to create a configuration file, i.e., for IP address 192.168.100.212, you

need to determine its name with the command “gethostip 192.168.100.212”. In

this case the name of the configuration file will be: C0A864D4

A.2.1 Configuring tftpd for booting POWER-based computers

You need to copy the following files to the /tftpboot directory:

򐂰 Image.prep.initrd located in the /boot directory of the first installation CD of

the PPC distribution.

򐂰 The /install file from the SLES 9 CD #1 to the /tftpboot directory.

򐂰 To create a customized kernel for the unattended installation, copy the install

kernel into the /tftpboot directory and issue the command

“mkzimage_cmdline” as shown in Example A-2. This will avoid running

through the SMS procedure, which means to just boot through TFTP, and the

kernel will start linuxrc with the right arguments. A more detailed description

can be found in the /ppc/netboot directory.

Example: A-2 “Maintain” the kernel for unattended installation

mkzimage_cmdline -a 1 -c -s "insmod=bcm5700

install=ftp://192.168.100.242/install-tree/sles9_ppc/

autoyast=ftp://192.168.100.242/install-tree/sles9_ppc/yastcfg/ netdevice=eth1"

install-ppc-sp1

򐂰 Note: Make sure the files in /tftpboot have the correct owner and group

IDs assigned. Since the tftpd process usually does not run as the root

user, check the tftp line in /etc/inetd.conf. In our example, “-u tftpd” is

specified. The user and group IDs of the files in /tftpboot must match

the information in the system permission database for the user “tftpd”.

To match the example, run:

chown tftpd:tftpd /tftpboot/install