02-08-2017
Looking for Reccomendations to Clone RHEL 7
Hello,
We are installing a group of stand-alone RHEL 7.1.3 servers for a new application in our environment. We are new to RHEL and would like to know what is the best way to clone the OS once we have the 1st install in the LAB with all the apps installed and passed all security checks. From there we'd like to clone the image on the other machines. Preferably a method that can also recreate exact partitions (this is desired, but not necessary). Also would be nice to setup a kickstart server with image.
Many thanks in advance for suggestions/solutions. And please let me know if you have any questions.
-Steve
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LEARN ABOUT CENTOS
redhat-upgrade-tool
REDHAT-UPGRADE-TOOL(8) redhat-upgrade-tool User Manual REDHAT-UPGRADE-TOOL(8)
NAME
redhat-upgrade-tool - Red Hat Upgrade tool
SYNOPSIS
redhat-upgrade-tool [OPTIONS] SOURCE
DESCRIPTION
redhat-upgrade-tool is the Red Hat Upgrade tool.
The redhat-upgrade-tool client runs on the system to be upgraded. It determines what packages are needed for upgrade and gathers them from
the source(s) given. It also fetches and sets up the boot images needed to run the upgrade and sets up the system to perform the upgrade at
next boot.
The actual upgrade takes place when the system is rebooted, using the boot images set up by redhat-upgrade-tool. The upgrade initrd starts
the existing system (mostly) as normal, lets it mount all the local filesystems, then starts the upgrade.
When the upgrade finishes, it reboots the system into the newly-upgraded OS.
OPTIONS
Optional arguments
-h, --help
Show a help message and exit.
-v, --verbose
Print more info.
-d, --debug
Print lots of debugging info.
--debuglog DEBUGLOG
Write debugging output to the given file. Defaults to /var/log/redhat-upgrade-tool.log.
--reboot
Automatically reboot to start the upgrade when ready.
SOURCE
These options tell redhat-upgrade-tool where to look for the packages and boot images needed to run the upgrade. At least one of these
options is required.
--device [DEV]
Device or mountpoint of mounted install media. If DEV is omitted, redhat-upgrade-tool will scan all currently-mounted removable devices
(USB disks, optical media, etc.)
--iso ISO
Installation image file.
--network VERSION
Online repos matching VERSION (a number or "rawhide")
Multiple sources may be used, if desired.
Additional options for --network
--enablerepo REPOID
Enable one or more repos (wildcards allowed).
--disablerepo REPOID
Disable one or more repos (wildcards allowed).
--addrepo REPOID=[@]URL
Add the repo at URL. Prefix URL with @ to indicate that the URL is a mirrorlist.
--instrepo REPOID
Get upgrader boot images from the repo named REPOID. The repo must contain a valid .treeinfo file which points to the location of
usable kernel and upgrade images.
Cleanup commands
--resetbootloader
Remove any modifications made to bootloader configuration.
--clean
Clean up everything written by redhat-upgrade-tool.
EXAMPLES
redhat-upgrade-tool --network 7.0 --instrepo <repo URL>
Upgrade to RHEL 7.0 by downloading all needed packages and data from the specified repository.
redhat-upgrade-tool --device --network 7.0
Upgrade to RHEL 7.0 using install media mounted somewhere on the system, fetching updates from the network if needed.
EXIT STATUS
0
Success.
1
Cancelled by user, failure writing files to disk, or other unknown error
2
Failed to download/copy files from the given SOURCE
3
RPM upgrade transaction test failed
BUGS
The --iso image must be on a filesystem listed in /etc/fstab.
AUTHORS
Will Woods <wwoods@redhat.com>
redhat-upgrade-tool 11/08/2013 REDHAT-UPGRADE-TOOL(8)