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|
#!/bin/sh
# container-tools - Manage systemd-nspawn containers
# Copyright (C) 2014-2017 Daniel Baumann <daniel.baumann@open-infrastructure.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
set -e
SCRIPT="${0}"
HOOKS="/etc/container-tools/hooks"
MACHINES="/var/lib/machines"
CACHE="/var/cache/container-tools/images"
Parameters ()
{
GETOPT_LONGOPTIONS="bind:,bind-ro:,script:,name:,clean,image:,server:,password:"
GETOPT_OPTIONS="b:,s:,n:,p:"
PARAMETERS="$(getopt --longoptions ${GETOPT_LONGOPTIONS} --name=${SCRIPT} --options ${GETOPT_OPTIONS} --shell sh -- ${@})"
if [ "${?}" != "0" ]
then
echo "'${SCRIPT}': getopt exit" >&2
exit 1
fi
eval set -- "${PARAMETERS}"
while true
do
case "${1}" in
-b|--bind)
# ignore
shift 2
;;
--bind-ro)
# ignore
shift 2
;;
--cnt.auto)
# ignore
shift 2
;;
-s|--script)
# ignore
shift 2
;;
-n|--name)
NAME="${2}"
shift 2
;;
--clean)
CLEAN="true"
shift 1
;;
--image)
IMAGE="${2}"
shift 2
;;
--server)
SERVER="${2}"
shift 2
;;
-p|--password)
PASSWORD="${2}"
shift 2
;;
--)
shift 1
break
;;
*)
echo "'${SCRIPT}': getopt error" >&2
exit 1
;;
esac
done
}
Usage ()
{
echo "Usage: container create -n|--name NAME -s|--script ${SCRIPT} -- [--clean] [--image IMAGE] [--server SERVER] [-p|--password PASSWORD}" >&2
exit 1
}
Parameters "${@}"
if [ -z "${NAME}" ]
then
Usage
fi
if [ -e "${MACHINES}/${NAME}" ]
then
echo "'${NAME}': container already exists" >&2
exit 1
fi
if [ ! -x /usr/bin/curl ]
then
echo "'${NAME}': /usr/bin/curl - no such file." >&2
exit 1
fi
if [ "$(id -u)" -ne 0 ]
then
echo "'${NAME}': need root privileges" >&2
exit 1
fi
ARCHITECTURE="${ARCHITECTURE:-$(dpkg --print-architecture)}"
IMAGE="${IMAGE:-debian-stretch-${ARCHITECTURE}.tar.xz}"
SERVER="${SERVER:-https://files.open-infrastructure.net/images/container-tools/current}"
PASSWORD="${PASSWORD:-$(dd if=/dev/urandom bs=12 count=1 2> /dev/null | base64)}"
VERSION="$(container version)"
# Pre hooks
for FILE in "${HOOKS}/pre-${SCRIPT}".* "${HOOKS}/${NAME}.pre-${SCRIPT}"
do
if [ -x "${FILE}" ]
then
"${FILE}"
fi
done
# Run
# FIXME: Show available image directories on server
# FIXME: Fetch debconf-choices.txt to show debconf select
# FIXME: gpg verification against debian-keyring or local keyring
# FIXME: default server via configuration file
echo "Downloading ${IMAGE}"
mkdir -p "${CACHE}"
if [ -e "${CACHE}/${IMAGE}" ]
then
CURL_OPTIONS="--time-cond ${CACHE}/${IMAGE}"
fi
if curl -V | grep -qs http2
then
CURL_OPTIONS="${CURL_OPTIONS} --http2"
fi
curl --fail --location --progress-bar --user-agent container-tools/${VERSION} ${CURL_OPTIONS} \
"${SERVER}/${IMAGE}" -o "${CACHE}/${IMAGE}"
curl --fail --location --progress-bar --user-agent container-tools/${VERSION} ${CURL_OPTIONS} \
"${SERVER}/${IMAGE}.sha512" -o "${CACHE}/${IMAGE}.sha512"
echo -n "Verifying ${IMAGE}.sha512"
cd "${CACHE}"
set +e
sha512sum --check "${IMAGE}.sha512" --status
SHA512SUM="${?}"
case "${SHA512SUM}" in
0)
echo " ok."
;;
*)
echo " failed."
exit 1
;;
esac
set -e
cd "${OLDPWD}"
echo "Unpacking ${IMAGE}"
mkdir -p "${MACHINES}/${NAME}"
case "${IMAGE}" in
*.gz)
TAR_OPTIONS="--gzip"
;;
*.lz)
TAR_OPTIONS="--lzip"
;;
*.xz)
TAR_OPTIONS="--xz"
;;
*)
TAR_OPTIONS=""
;;
esac
if [ -e /usr/bin/pv ]
then
pv --format '%p' --width 77 "${CACHE}/${IMAGE}" | tar xf - ${TAR_OPTIONS} -C "${MACHINES}/${NAME}" --strip 1
else
tar xf "${CACHE}/${IMAGE}" ${TAR_OPTIONS} -C "${MACHINES}/${NAME}" --strip 1
fi
# Creating machine-id
chroot "${MACHINES}/${NAME}" systemd-machine-id-setup > /dev/null 2>&1
# Setting hostname
echo "${NAME}" > "${MACHINES}/${NAME}/etc/hostname"
# Copying resolv.conf
cp -L /etc/resolv.conf "${MACHINES}/${NAME}/etc/resolv.conf"
# Setting root password
echo root:${PASSWORD} | chroot "${MACHINES}/${NAME}" chpasswd
echo "${NAME}: root password set to '${PASSWORD}'."
# Reove cache
case "${CLEAN}" in
true)
rm -f "${CACHE}/${IMAGE}"
rm -f "${CACHE}/${IMAGE}.sha512"
;;
esac
# Post hooks
for FILE in "${HOOKS}/post-${SCRIPT}".* "${HOOKS}/${NAME}.post-${SCRIPT}"
do
if [ -x "${FILE}" ]
then
"${FILE}"
fi
done
|
