Red Hat ENTERPRISE LINUX 3 - FOR IBM ESERVER ISERIES AND IBM ESERVER PSERIES, Руководство по установке

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4 Chapter 1. Steps to Get You Started
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For NFS, export the directory by adding an entry to
/etc/exports
to export to a specific system:
/location/of/disk/space client.ip.address(ro,no_root_squash)
To export to all machines (not appropriate for all NFS systems), add:
/location/of/disk/space *(ro,no_root_squash)
Start the NFS daemon (on a Red Hat Enterprise Linux machine, use
/sbin/service nfs
start
). If NFS is already running, reload the configuration file (on a Red Hat Enterprise Linux
system, use
/usr/bin/service nfs reload
).
Be sure to test the NFS share following the directions in the Red Hat Enterprise Linux System
Administration Guide .
If the
RedHat/
directory does not appear in the NFS shared directory, the wrong path may have
been mounted and/or exported.
•
FTP and HTTP installations also support a second type of tree structure. To make it easier to access
the contents of the installation CD-ROMs, mount each CD-ROM or ISO image with the following
mount point on the FTP or HTTP server (where
X
is the number of the CD-ROM or ISO image):
/location/of/disk/space/disc X /
For example:
mount -o loop CD1.iso /location/of/disk/space/disc1/
1.6.1. Using ISO Images for NFS Installs
NFS installations can use ISO (or CD-ROM) images rather than copying an entire installation tree.
After placing the required ISO images (the binary Red Hat Enterprise Linux CD-ROMs) in a directory,
choose to install via NFS. You will then point the installation program at that directory to perform the
installation.
Verifying that the ISO images are intact before you attempt an installation will help to avoid problems
that are often encountered during an NFS installation. To verify the ISO images are intact prior to
performing an installation, use an
md5sum
program (many
md5sum
programs are available for various
operating systems). An
md5sum
program should be available on the same server as the ISO images.
Note
ISO images have an md5sum embedded in them. To test the checksum integrity of an ISO image, at
the installation boot prompt, type:
linux mediacheck
Additionally, if a file called
updates.img
exists in the directory from which you install, then it will
be used for installation program updates. Refer to the file
install-methods.txt
in the
anaconda
RPM package for detailed information on the various ways to install Red Hat Enterprise Linux, as
well as how to apply the installation program updates.
Note
You can only have the ISO images for one release and one variant of Red Hat Enterprise Linux in the
directory.