Re: "cloning" (sort of ) an installation

On Mon, 16 Jun 2008 09:13:14 -0700
"Alan Evans" <ame.fedora@xxxxxxxxx> wrote:

Please excuse my inane question. I'm fairly experienced with
administering RH/Fedora installations, but I've just never tried to do
this before.

I'm setting up a backup server which is to have substancially the same
packages installed as the primary. I can easily enough get the list of
installed packages on the primary with "rpm -qa", but how do I turn
that list into something that will as automatically as possible
download and install/upgrade packages on the secondary? Or is that
completely wrong-headed?

You can generate package lists and feed them into yum, or you might want
to investigate the kickstart facility which lets you script entire
installs. Its normally used for big setups where you need to produce
"desktop pc type 1" to order but it'll work for two.

If you just need to make sure the right packages are present then
something like

rpm -qa > log

(transfer to other box)

yum install $(cat log)

ought to do the trick [ $(foo) substitutes the output of command foo for
the $(foo) ]

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