opsi manual opsi version 4.0.2 - opsi Download - uib

opsi manual opsi version 4.0.2
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the installation boot image. Also this file contains the client key to decrypt the pcpatch password. This file is created
as a named pipe and therefore disappears after being read once. More details about this in the chapter on security of
file shares.
Based on the information the pxelinux.0 got from the named pipe, the actual bootimage is loaded from the opsi depot
server via tftp. The bootimage is based on a linux kernel (/tftpboot/linux/install) within an appropriate initrd file
system (/tftpboot/linux/miniroot.gz) and has a size of approximately 65 MB.
9.2.5 Boot from CD
Similar to the tftp boot via PXE-bootprom, the installation boot image can be booted from the opsi bootcd.
This might be recommended under the following conditions:
• the client has no PXE bootprom;
• there is no dhcp;
• there is a dhcp but it isn’t allowed to configure any client data and the hardware addresses of the clients are
unknown;
• there is a dhcp but it isn’t configured for this demand.
According to different situations, several information has to be provided for the CD boot image by interactive input.
The most simple case is to provide no further information. Eventually the clients hostname can be passed
by hn=. Using the option ASK_CONF=1 several parameters can be queried. Pressing F1 at the CD
prompt shows the syntax.
Please read the chapter Create a new client using the opsi-client-bootcd at the opsi-getting-started manual.
9.2.6 The linux bootimage prepares for reinstallation
The bootimage again performs a dhcp request and configures the network interface according to the perceived information.
Afterwards the configuration data for the client will be loaded via opsi web service.
Figure 54: PXE-Boot loaded with bootimage preparing hard disk for operating system installation