General procedure for building jails:
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one way to do it is install a distro and then tar up the root drive, and then extract the tarball an another machine

I thought it was a pain to find a spare box and spend and hour or two to set up the box. And, usually a distro installs many more packages than you actually need in the jail.
Plus, if we loose any of ours jails it is quite a bit of downtime if we don't have backups.

So, use gatherrpms.py to collect all the rpms for a certain distro.

./gatherrpms.py <method> <distro_name> <iso files|url>

Then, update jail_config for your distro

run: (as root or under sudo)

./buildjail.py <distro_name>

It may take some figuring out to create the jail just right, but once you have it, it's much easier to recreate the jail for future use.

I recommend documenting the sites you got the rpms from in the jail config so you can easily recreate the jail.

Note: this procedure also works for producing rpm based jails on debian based distros
Note: These scripts only require the rpm binary and python.  **No other external libraries**

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Noticed quirks
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redhat-9-i386: rpm commands will only work with the following environment var:
	LD_ASSUME_KERNEL=2.2.5
	make sure in the jail config file you specify:
		environment=LD_ASSUME_KERNEL=2.2.5
	This environment var is needed if you're running on a machine that's not
	 	running the rh9 stock kernel