NEC Express5800/ftServer, Руководство администратора

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Upgrading or Restoring the Linux Operating System
4-4 Express5800/
ftServer
: System Administrator’s Guide for the Linux Operating System
The following topics apply when upgrading or restoring the Linux operating system.
• ‘‘ Express5800/
ftServer
Kernel Modules ”
• ‘‘ Upgrading or Restoring the Linux Operating System ”
Express5800/
ftServer
Kernel Modules
Whenever the Linux operating system is upgraded, a new Linux kernel is installed.
Whenever
Express Builder
is installed or upgraded, the fault-tolerant
Express5800/
ftServer
kernel modules are automatically rebuilt at the next boot time.
These modules must be present for fault-tolerant operation. The following
requirements must be met, to ensure that these modules will be rebuilt.
• Express5800/
ftServer
kernel modules are only built for SMP kernels. Make sure that
you only use SMP kernels.
• The kernel-smp-devel package must be installed. The version of this package must
match the version of the kernel-smp in use.
• The
/boot
file system must be mounted when Express5800/
ftServer
kernel
modules are rebuilt so the
initrd
can be re-created with these modules (
/boot
is mounted by
/etc/fstab
).
• The directory
/opt/ft
must reside within the root file system.
Immediately after rebuilding kernel modules at boot time, the system automatically
reboots to place these rebuilt modules into use. If the system cannot successfully build
all the required Express5800/
ftServer
kernel modules, a policy of whether a
non-fault-tolerant boot is allowed or prohibited takes effect. This policy is set by the
/etc/opt/ft/modules.policy
file and affected by the
/etc/opt/ft/non_ft_boot.sh
script. Execute the
install.sh
installation
script to review or change the policy.
Upgrading the Linux Operating System
Use the Red Hat Update Agent ( up2date ) to install a new Linux operating system U
update.
Before you install a new Linux operating system U update (for example U3), make sure
to do the following:
• See the Release Notes: Express5800/
ftServer
for the Linux Operating System
or check with the NEC Corporation of America Customer Support Center or your
authorized NEC service representative to make sure there
is an Express Builder
version available tosupport the Linux operating system update.
• Make sure the system is registered with Red Hat and has entitlement on the RHN
server.