Upgrading or Restoring the Linux Operating System
Updating the Operating System and Express5800/
ftServer
System Software
4-5
By default, the Update Agent on a system running
Express Builder
is configured to
access the
following servers:
•
The Red Hat RHN server for Linux OS patches
To upgrade the Linux operating system
1. Start the Red Hat
Update Agent
from the graphical desktop, or by running the
up2date
command on the command line.
The Update Agent does the following:
•
Queries the RHN server for new versions of RPMs that are already installed on
your system.
•
Lists all available updates.
2. Select the updates you want to install.
•
By default all available OS updates that do
not
affect the kernel are selected
for installation.
•
By default all available OS updates that
do
require kernel modification are not
selected.
To install these updates, explicitly select their check boxes.
•
By default, all available
Express Builder
updates are selected for installation.
3. The Update Agent downloads the updates and prompts you to install them.
4. To install a new version of
Express Builder
, see ‘‘
Upgrading or Restoring
Express Builder
.”
5. Reboot the system only if you manually selected an update that modifies the
kernel.
By default, the Update Agent only updates RPMs that are already installed on the
system. If the operating system upgrade failed or you want to return the system to the
previous operating system version, see ‘‘
Recovering from a Failed Software Upgrade’’
on page 4-8
.
Restoring the Linux Operating System
1. Make sure that you have a backup system disk, in case the reinstallation fails or
you want to return to the previous version of the Linux operating system. See
‘‘
Creating a Backup System Disk’’ on page 4-7
for details.
2. Shut down the ftServer system with the command:
#
halt -p
3.
See
the User Guide (Setup) to ensure that your system is configured for reinstallation.
