Walt Reed wrote:
On Wed, Nov 29, 2006 at 12:46:13PM -0800, Kevan Benson said:
On Wednesday 29 November 2006 05:43, Walt Reed wrote:
On Wed, Nov 29, 2006 at 01:31:48PM -0000, Nigel Kendrick said:
I am doing a server swap out tomorrow and wondered if there was a utility
that will copy user account details and their current passwords from one
server to another (both CentOS 4) - there's only about 15 to do so it's
not a major issue.
Rsync and scp are your friend.
You can either cut and paste the user info from the /etc/passwd, shadow,
and group files manually, or copy the entire files which wiill also copy
over all the system accounts (root password and such):
cd /etc
scp -p passwd shadow group newserver:/etc
Then of course you will probably need to copy the user home directories
over:
cd /home
rsync -aze ssh * newserver:/home
It's worth noting that if you use external packages (rpmforge, kbsingh), that
some packages may create users without a set UID (as the core packages seem
to have), and if already installed on the new system, it might be using a
different UID. In these cases, you should either copy regular user portions
of the files only, or take a careful look at a diff between the old and new
files to ensure there are no problems.
This caused me a few minutes of confusion with clamav/clamd (specifically the
milter socket) which had an incorrect owner after passwd sync on a mail
server migration.
Ya, that is annoying.
When building the "replacement" server, it can help to sync / add
accounts before all the third-party crap goes on. We do it as part of
the kickstart %post scripts. Kickstart from pxe-boot is awesome -
especially on HP servers... :-) Once a machine is installed in the rack
and powered up for the first time, it's online and usable with all the
packages we need, preconfigured, in about 15 minutes.
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Walt - Can you show us your scripts?
I am working on something similar - a way to deploy a server
using kickstart and then a handwritten script to configure
things like postfix, ip, iptables, mysql, apache etc
I imagine however that all you clever people have already
got this in your toolbox of tricks,.
Thanks,
MrKiwi
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