How To Install Gentoo Onto Any OpenVZ VPS

debian-to-gentoo.sh

#!/bin/sh

set -e

if [ `whoami` != "root" ]; then
  echo "This script must run as root!"
  exit 1
fi

if [ ! -f /root/stage3-*.tar.bz2 ]; then
  echo "Could not find stage3 tarball!"
  exit 1
fi

echo "Extracting stage3 tarball ..."
rm -fr /root/gentoo
mkdir /root/gentoo
tar xjpf /root/stage3-*.tar.bz2 -C /root/gentoo

echo "Patching Gentoo installation ..."

# Fix mtab.
rm -f /root/gentoo/etc/mtab
ln -s /proc/mounts /root/gentoo/etc/mtab

# The host, not the container, mounts file systems.
echo "proc  /proc       proc    defaults    0    0" > /root/gentoo/etc/fstab
echo "none  /dev/pts    devpts  rw          0    0" >> /root/gentoo/etc/fstab

# The container has no terminals, don't run agetty.
sed -i -e '/agetty/d' /root/gentoo/etc/inittab

# Force a password to be set.
sed -i -e '/^root/s/\*/!/' /root/gentoo/etc/shadow

# Update PAM so that the host can set passwords.
sed -i -e \
    '/^password/s/include.*/required pam_unix.so md5 shadow/' \
    /root/gentoo/etc/pam.d/chpasswd

echo "Activating Gentoo ..."
mount | grep -q /root/new && umount /root/new
rm -fr /root/new
mkdir /root/new
mount --bind / /root/new

rsync -alH --delete-after \
    --exclude=/dev \
    --exclude=/lib/init \
    --exclude=/root \
    /root/gentoo/ /root/new/

echo "Setting root password ..."
passwd