LXD用のUbuntu Xenialイメージ作成スクリプト

lxd_image_creator.sh

#!/bin/bash

set -eu
set -x

REPO_URL='http://www.ftp.ne.jp/Linux/packages/ubuntu/archive/ubuntu/'

work=$(mktemp -d work.XXXXXX)
cd ${work}

mkdir -p rootfs
mkdir -p templates
debootstrap --arch amd64 xenial rootfs ${REPO_URL}

cat > rootfs/etc/apt/sources.list <<EOF
deb ${REPO_URL} xenial main restricted universe multiverse
deb ${REPO_URL} xenial-updates main restricted universe multiverse
deb ${REPO_URL} xenial-security main restricted universe multiverse
EOF

cat > rootfs/etc/network/interfaces.d/lo <<EOF
auto lo
iface lo inet loopback
EOF

cat > rootfs/etc/network/interfaces.d/eth0 <<EOF
auto eth0
iface eth0 inet dhcp
EOF

cat > templates/hostname.tpl <<EOF
{{ container.name }}
EOF

cat > metadata.yaml <<EOF
architecture: x86_64
creation_date: $(date +%s)
properties:
  description: Xenial
  os: Ubuntu
  release: "xenial"
templates:
  /etc/hostname:
    when:
      - create
      - copy
    template: hostname.tpl
EOF

tar czf ubuntu.tar.gz metadata.yaml rootfs templates
lxc image import ubuntu.tar.gz --alias my-ubuntu

cd ..
rm -rf ${work}