gentoo-cloud-prep

Some scripts to help with the following:

• Get the latest stage3 and portage snapshot from a mirror
• Catalyst that shit up into a stage4 for your own voodoo
• Prepare a physical disk based on that stage4, throw grub on it, generate a qcow2 image

Prep and Usage: How do?

First we need some packages.

# emerge catalyst qemu parted app-crypt/gkeys grub:2

Now we can run catalyst and qemu-img. If you only need the stage4, you can omit qemu.

Run the scripts in order, and you'll have a shiny new set of files, depending on what you wanted.

set the profile you want, valid ones are as follows

• default/linux/amd64/13.0
• default/linux/amd64/13.0/no-multilib
• hardened/linux/amd64
• hardened/linux/amd64/no-multilib

export PROFILE="default/linux/amd64/13.0"

Of note to hardened users is that this uses catalyst, which uses chroots, so you need to allow grsec things for chroots

Environment variables

The following environment variables are used to customize the build process.

MIRROR: http://gentoo.osuosl.org The Gentoo mirror used to download stage3 and portage archives. See https://www.gentoo.org/downloads/mirrors/

BUILD_DIR: /var/tmp/catalyst/builds Catalyst build directory. Must match your settings in /etc/catalyst/catalyst.conf.

PORTAGE_DIR: /var/tmp/catalyst/snapshots Directory in which the portage snapshots are stored. Must match your settings in /etc/catalyst/catalyst.conf.

PROFILE: default/linux/amd64/13.0 Profiles supported are as follows:

• default/linux/amd64/13.0
• default/linux/amd64/13.0/no-multilib
• hardened/linux/amd64
• hardened/linux/amd64/no-multilib

Quick Overview: What do?

• 01-get-stage3.sh will get the latest stage3 for you, from whatever mirror is supplied in the script. You can use the default, but it's throttled for traffic outside my IP range.
• 02-catalyst-that-shit.sh will take the stage3 generated a moment ago, and spit out a stage4 for you. You will have to change variables here, I haven't included any overlays. Stop here if you only want a stage4.
• 03-prep-that-image.sh will take that stage4 that you just generated, and first wipe the target disk (entirely), make a partition table, mkfs.ext4 it, splat the stage4 on it, and newest portage. It will then unmount it, and throw grub on it. After that, it will dd the disk into a raw image, and then qemu-img convert that raw image into a qcow2 format, then remove the raw image.

License: No don't!

Just kidding, do whatever you want. Unless that involves blaming me. Don't blame me.