02-09-2017
Install everything i need in lab (the OS and packages).
You want to maintain a list of what you did.
Do everything from repositories, local repositories best.
Install everything you need using yum or yum localinstall.
Once you have completed the OS install and all the packages, create a kickstart file from it.
Using kickstart you can define disk layout, hostname, network configuration, packages to install (from list you took) and post install stuff (wget something or whatever ).
Play with it until you achieve perfect install, then just PXE a new environment using that kickstart file with minute changes over numerous protocols (http, tftp etc.) and local repositories.
If you upgrade or patch, remember to review and test the installation using kickstart file.
So it's not actually a clone, but a fresh system with everything you require.
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LEARN ABOUT CENTOS
yum-complete-transaction
yum-complete-transaction(8) yum-complete-transaction(8)
NAME
yum-complete-transaction - attempt to complete failed or aborted Yum transactions
SYNOPSIS
yum-complete-transaction [options]
GENERAL OPTIONS
-h, --help
Help; display a help message and then quit.
--cleanup-only
Only clean up only transaction journal files and exit.
DESCRIPTION
yum-complete-transaction is a program which finds incomplete or aborted yum transactions on a system and attempts to complete them. It
looks at the transaction-all* and transaction-done* files which can normally be found in /var/lib/yum if a yum transaction aborted in the
middle of execution.
If it finds more than one unfinished transaction it will attempt to complete the most recent one first. You can run it more than once to
clean up all unfinished transactions.
FILES
As yum-complete-transaction uses YUM libraries for retrieving all the information, it relies on YUM configuration for its default values
like which repositories to use. Consult YUM documentation for details:
/etc/yum.conf
/etc/yum/repos.d/
/var/cache/yum/
SEE ALSO
yum.conf (5)
http://yum.baseurl.org/
AUTHORS
See the Authors file included with this program.
BUGS
There are of course no bugs, but should you find any, you should first consult the FAQ section on http://yum.baseurl.org/wiki/Faq and if
unsuccessful in finding a resolution contact the mailing list: yum-devel@lists.baseurl.org. To file a bug use http://bugzilla.redhat.com
for Fedora/RHEL/Centos related bugs and http://yum.baseurl.org/report for all other bugs.
Seth Vidal 10 December 2007 yum-complete-transaction(8)