Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION, Руководство по установке

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Chapter 17. Installing on IBM System z Systems
192
17.3. Running the Installation Program
After following the steps outlined in
Chapter 16, Steps to Get You Started
for booting an LPAR or VM
system,
ssh
to the configured Linux install system on the IBM System z.
Although the text mode installation program is run by default for most installations, you can optionally
run the graphical installation program available for both VM and LPAR installations via the NFS
installation method.
Note
If you have a slow network connection or prefer a text-based installation, do not set the
DISPLAY=
variable in the
parm
file. The text-based installation is similar to the graphical
installation; however, the graphical installation offers more package selection details and
other options not available in text-based installs. It is strongly recommended to use the
graphical installation whenever possible.
To run the graphical installation, use a workstation that has an X Window System server or VNC
client installed. Use an SSH client that allows X11 forwarding or a Telnet client. SSH is strongly
recommended for its security features as well as its ability to forward X and VNC sessions. Enable
X11 forwarding in your SSH client prior to connecting to the
Linux image
(the Linux guest running on z/
VM).
17.3.1. Installation using X11 Forwarding
For example, to connect to the Linux image and display the graphical installation program using
OpenSSH with X11 forwarding on a Linux workstation, type the following at the workstation shell
prompt:
ssh --X linuxvm.example.com
The
-X
option enables X11 forwarding.
The graphical installation program cannot be started if your DNS or hostnames are not set correctly, or
the Linux image is not allowed to open applications on your display. You can prevent this by setting a
correct
DISPLAY=
variable. Add the parameter
DISPLAY= workstationname :0.0
in the parameter
file, replacing
workstationname
with the hostname of the client workstation connecting to the Linux
Image. Allow the Linux image to connect to the workstation using the command
xhost +linuxvm
on
the local workstation.
If the graphical installation via NFS does not automatically begin for you, verify the
DISPLAY=
variable
settings in the
parm
file. If performing a VM installation, rerun the installation to load the new
parm
file
on the reader. Additionally, make sure when performing an X11 forwarded display that the X server
is started on the workstation machine. Finally, make sure either the NFS, FTP or HTTP protocols are
selected, as all 3 methods support graphical installations.
17.3.2. Installation using VNC
If you are using VNC, a message on the workstation SSH terminal prompts you to start the VNC client
viewer and details the VNC display specifications. Enter the specifications from the SSH terminal into
the VNC client viewer and connect to the Linux image to begin the installation.