Datasheet

“main” (Installation and Administration) — 2004/6/25 — 13:29 — page 158 — #184
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4.2.2 Configuring the Clients
The local YOU clients (‘YaST Control Center’ ➝ ‘Online Update’) should
be configured manually to obtain the updates from your YOU server or use
the SLP functionality of YaST to determine the server address automati-
cally.
Manual Configuration Enter the URL of the local server in the URL field
of the YOU client: http://<servername>/YOU. Alternatively, add
this path to /etc/youservers.
Searching for Servers via SLP Activate the SLP search on your YOU
client by setting the SLP_ENABLED variable to yes in the /etc/
sysconfig/onlineupdate file.
Clients can be configured with a cronjob to search the local server regularly
for updates. Alternatively, activate the update procedure manually. There is
a description of the YOU client in Section 2.3.2 on page 52.
4.3 Booting from the Network
To boot the system with a bootable network card, you need three services:
1. First, you need a service that answers queries from the network card.
On Intel-based computers, this is generally PXE. During the PXE boot
process, first a special PXE boot image is loaded. This controls the re-
mainder of the boot process. Itanium Processor Family computers are
started for the network boot via elilo.
2. tftpd is responsible for making the kernel and the first system avail-
able. To configure tftpd, use the provided YaST module.
3. To boot with the boot server for the installation, you need a third ser-
vice — an installation server. This service is described in detail in Sec-
tion 4.1 on page 152. With the aid of this service, you can also operate
a system entirely without any local hard disks. In this case, it is rec-
ommended to make the root file system available through NFS.
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4.3. Booting from the Network