05-23-2008
Fred,
* afaik it is called a migration, this is a bit different from a tl upgrade, you don't need to do a fresh install, Your setting are kept.
* Oracle 9 will run (maybe relinking is needed, maybe some issues), other applications will depend, you will need to check them.
* cdr might not be big enough, DVD might be. You can create a bootable image on disk and copy it to a system that has a DVD-writer (I never tried this). A bootable backup is always a good idea to have!
* upgrade (migrate) is very simple (if everything goes like it should), I suggest you to have a look at alternate disk migration, this gives you a fallback scenario in case youre install fails (and you don't have a bootable backup).
* In theory you're downtime is limited to the time it takes to reboot the system (plus application modification..)
I really advise you to make sure you have a sound sollution for the bootable backups, it will save you a lot of headaches when the sh*t hits the ...
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LEARN ABOUT CENTOS
livemedia-creator
LIVEMEDIA-CREATOR(1) General Commands Manual LIVEMEDIA-CREATOR(1)
NAME
livemedia-creator - Create live install media
SYNOPSIS
livemedia-creator [-h]
(--make-iso | --make-disk | --make-fsimage | --make-appliance | --make-ami)
[--iso ISO] [--disk-image DISK_IMAGE]
[--fs-image FS_IMAGE] [--ks KS]
[--image-name IMAGE_NAME] [--image-only]
[--keep-image] [--no-virt] [--proxy PROXY]
[--anaconda-arg ANACONDA_ARGS]
[--armplatform ARMPLATFORM] [--location LOCATION]
[--logfile LOGFILE]
[--lorax-templates LORAX_TEMPLATES] [--tmp TMP]
[--resultdir RESULT_DIR] [--app-name APP_NAME]
[--app-template APP_TEMPLATE] [--app-file APP_FILE]
[--ram MEMORY] [--vcpus VCPUS] [--vnc VNC]
[--arch ARCH] [--kernel-args KERNEL_ARGS]
[--dracut-arg DRACUT_ARGS] [--title TITLE]
[--project PROJECT] [--releasever RELEASEVER]
[--volid VOLID] [--squashfs_args SQUASHFS_ARGS]
DESCRIPTION
livemedia-creator uses Anaconda, kickstart and Lorax to create bootable media that use the same install path as a normal system install. It
can be used to make live isos, bootable (partitioned) disk images and filesystem images for use with virtualization.
The general idea is to use virt-install to install into a disk image and then use the disk image to create the bootable media.
livemedia-creator --help will describe all of the options available. At the minimum you need:
--make-iso to create a final bootable .iso --iso to specify the Anaconda install media to use with virt-install --ks is the kickstart to
use to install the system
OPTIONAL ARGUMENTS
:
-h, --help
show this help message and exit
--make-iso
Build a live iso
--make-disk
Build a partitioned disk image
--make-fsimage
Build a filesystem image
--make-appliance
Build an appliance image and XML description
--make-ami
Build an ami image
--iso ISO
Anaconda installation .iso path to use for virt-install
--disk-image DISK_IMAGE
Path to disk image to use for creating final image
--fs-image FS_IMAGE
Path to filesystem image to use for creating final image
--ks KS
Kickstart file defining the install.
--image-name IMAGE_NAME
Name of fs/disk image to create. Default is a random name.
--image-only
Exit after creating fs/disk image.
--keep-image
Keep raw disk image after .iso creation
--no-virt
Use Anaconda's image install instead of virt-install
--proxy PROXY
proxy URL to use for the install
--anaconda-arg ANACONDA_ARGS
Additional argument to pass to anaconda (no-virt mode). Pass once for eachargument
--armplatform ARMPLATFORM
the platform to use when creating images for ARM, i.e., highbank, mvebu, omap,tegra, etc.
--location LOCATION
location of iso directory tree with initrd.img and vmlinuz. Used to run virt-install with a newer initrd than the iso.
--logfile LOGFILE
Path to logfile
--lorax-templates LORAX_TEMPLATES
Path to mako templates for lorax
--tmp TMP
Top level temporary directory
--resultdir RESULT_DIR
Directory to copy the resulting images and iso into. Defaults to the temporaryworking directory
--title TITLE
Substituted for @TITLE@ in bootloader config files
--project PROJECT
substituted for @PROJECT@ in bootloader config files
--releasever RELEASEVER
substituted for @VERSION@ in bootloader config files
--volid VOLID
volume id
--squashfs_args SQUASHFS_ARGS
additional squashfs args
APPLIANCE ARGUMENTS
:
--app-name APP_NAME
Name of appliance to pass to template
--app-template APP_TEMPLATE
Path to template to use for appliance data.
--app-file APP_FILE
Appliance template results file.
VIRT-INSTALL ARGUMENTS:
--ram MEMORY
Memory to allocate for installer in megabytes.
--vcpus VCPUS
Passed to --vcpus command
--vnc VNC
Passed to --graphics command
--arch ARCH
Passed to --arch command
--kernel-args KERNEL_ARGS
Additional argument to pass to the installation kernel
DRACUT ARGUMENTS
:
--dracut-arg DRACUT_ARGS
Argument to pass to dracut when rebuilding the initramfs. Pass this once foreach argument. NOTE: this overrides the default.
SEE ALSO
Documentation in /usr/share/docs/lorax/README.livemedia-creator
AUTHOR
Brian C. Lane
2013-07-26 LIVEMEDIA-CREATOR(1)