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Chapter 30. Installing Through VNC
Note
This IP address is only used during installation. You will have an opportunity to
configure the final network settings, if any, later in the installer.
5. Once the installer indicates it is starting anaconda, you will be instructed to connect to the
system using the VNC viewer. Connect to the viewer and follow the graphical installation mode
instructions found in the product documentation.
30.3.2. Kickstart Considerations
If your target system will be booting over the network, VNC is still available. Just add the vnc
command to the kickstart file for the system. You will be able to connect to the target system using
your VNC viewer and monitor the installation progress. The address to use is the one the system is
configured with via the kickstart file.
If you are using DHCP for the target system, the reverse vncconnect method may work better for
you. Rather than adding the vnc boot parameter to the kickstart file, add the vncconnect=HOST
parameter to the list of boot arguments for the target system. For HOST, put the IP address or DNS
host name of the VNC viewer system. See the next section for more details on using the vncconnect
mode.
30.3.3. Firewall Considerations
If you are performing the installation where the VNC viewer system is a workstation on a different
subnet from the target system, you may run in to network routing problems. VNC works fine so long
as your viewer system has a route to the target system and ports 5900 and 5901 are open. If your
environment has a firewall, make sure ports 5900 and 5901 are open between your workstation and
the target system.
In addition to passing the vnc boot parameter, you may also want to pass the vncpassword
parameter in these scenarios. While the password is sent in plain text over the network, it does
provide an extra step before a viewer can connect to a system. Once the viewer connects to the target
system over VNC, no other connections are permitted. These limitations are usually sufficient for
installation purposes.
Important
Be sure to use a temporary password for the vncpassword option. It should not be a
password you use on any systems, especially a real root password.
If you continue to have trouble, consider using the vncconnect parameter. In this mode of
operation, you start the viewer on your system first telling it to listen for an incoming connection. Pass
vncconnect=HOST at the boot prompt and the installer will attempt to connect to the specified HOST
(either a hostname or IP address).
30.4. References
• VNC description at Wikipedia:
296
http://en.wikipedia.org/wiki/Vnc
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Troubleshooting
