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#!/bin/sh
# container-tools - Manage systemd-nspawn containers
# Copyright (C) 2014-2016 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
COMMAND="$(basename ${0})"
CONFIG="/etc/container-tools/config"
MACHINES="/var/lib/machines"
Parameters ()
{
LONG_OPTIONS="name:"
OPTIONS="n:"
PARAMETERS="$(getopt --longoptions ${LONG_OPTIONS} --name=${COMMAND} --options ${OPTIONS} --shell sh -- ${@})"
if [ "${?}" != "0" ]
then
echo "'${COMMAND}': getopt exit" >&2
exit 1
fi
eval set -- "${PARAMETERS}"
while true
do
case "${1}" in
-n|--name)
NAME="${2}"
shift 2
;;
--)
shift 1
break
;;
*)
echo "'${COMMAND}': getopt error" >&2
exit 1
;;
esac
done
}
Usage ()
{
echo "Usage: container ${COMMAND} -n|--name NAME" >&2
exit 1
}
Parameters "${@}"
if [ -z "${NAME}" ]
then
Usage
fi
if [ ! -e "${MACHINES}/${NAME}" ]
then
echo "'${NAME}': no such container" >&2
exit 1
fi
STATE="$(machinectl show ${NAME} 2>&1 | awk -F= '/^State=/ { print $2 }')"
case "${STATE}" in
running)
echo "'${NAME}': container is already started" >&2
exit 1
;;
esac
HOST_ARCHITECTURE="$(dpkg --print-architecture)"
MACHINE_ARCHITECTURE="$(chroot ${MACHINES}/${NAME} dpkg --print-architecture)"
case "${HOST_ARCHITECTURE}" in
amd64)
case "${MACHINE_ARCHITECTURE}" in
i386)
SETARCH="setarch i686"
;;
*)
SETARCH=""
;;
esac
;;
arm64)
case "${MACHINE_ARCHITECTURE}" in
armel|armhf)
SETARCH="setarch armv7l"
;;
*)
SETARCH=""
;;
esac
;;
esac
# config
if [ -e "${CONFIG}/${NAME}.conf" ]
then
BIND="$(awk -F= '/^bind=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${BIND}" ]
then
BINDS="$(echo ${BIND} | sed -e 's|;| |g')"
for BIND in ${BINDS}
do
DIRECTORY="$(echo ${BIND} | awk -F: '{ print $1 }')"
if [ ! -e "${DIRECTORY}" ]
then
echo "E: '${DIRECTORY}' - no such directory." >&2
exit 1
fi
done
BIND=""
for DIRECTORIES in ${BINDS}
do
BIND="${BIND} --bind ${DIRECTORIES}"
done
fi
BOOT="$(awk -F= '/^boot=/ { print $2 }' ${CONFIG}/${NAME}.conf || echo yes)"
case "${BOOT}" in
yes)
BOOT="--boot"
;;
*)
BOOT=""
;;
esac
CAPABILITY="$(awk -F= '/^capability=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
case "${CAPABILITY}" in
"")
CAPABILITY=""
;;
*)
CAPABILITY="--capability=${CAPABILITY}"
;;
esac
DIRECTORY="$(awk -F= '/^directory=/ { print $2 }' ${CONFIG}/${NAME}.conf || echo ${MACHINES}/${NAMES})"
DIRECTORY="--directory ${DIRECTORY}"
DROP_CAPABILITY="$(awk -F= '/^drop-capability=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
case "${DROP_CAPABILITY}" in
"")
DROP_CAPABILITY=""
;;
*)
DROP_CAPABILITY="--drop-capability=${DROP_CAPABILITY}"
;;
esac
MACHINE="--machine=${NAME}"
NETWORK_BRIDGE="$(awk -F= '/^network-bridge=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
case "${NETWORK_BRIDGE}" in
"")
NETWORK_BRIDGE=""
;;
*)
NETWORK_BRIDGE="--network-bridge=${NETWORK_BRIDGE}"
;;
esac
NETWORK_VETH_EXTRA_CONF="$(awk -F= '/^network-veth-extra=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
NETWORK_VETH_EXTRA=""
case "${NETWORK_VETH_EXTRA_CONF}" in
"")
;;
*)
for VETH in ${NETWORK_VETH_EXTRA_CONF}
do
NETWORK_VETH_EXTRA="${NETWORK_VETH_EXTRA} --network-veth-extra=${VETH}"
INTERFACE="$(echo ${VETH} | awk -F: '{ print $1 }')"
cat > "/etc/network/interfaces.d/${INTERFACE}" << EOF
iface ${INTERFACE} inet manual
pre-up ifconfig ${INTERFACE} up
post-down ifconfig ${INTERFACE} down
EOF
done
;;
esac
LINK_JOURNAL="$(awk -F= '/^link-journal=/ { print $2 }' ${CONFIG}/${NAME}.conf || echo no)"
case "${LINK_JOURNAL}" in
yes)
LINK_JOURNAL="--link-journal=yes"
;;
*)
LINK_JOURNAL="--link-journal=no"
;;
esac
REGISTER="$(awk -F= '/^register=/ { print $2 }' ${CONFIG}/${NAME}.conf || echo yes)"
case "${REGISTER}" in
yes)
REGISTER="--register=yes"
;;
*)
REGISTER="--register=no"
;;
esac
BLOCK_IO_DEVICE_WEIGHT="$(awk -F= '/^BlockIODeviceWeight=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${BLOCK_IO_DEVICE_WEIGHT}" ]
then
BLOCK_IO_DEVICE_WEIGHT="BlockIODeviceWeight=${BLOCK_IO_DEVICE_WEIGHT}"
SET_PROPERTY="true"
fi
BLOCK_IO_READ_BANDWITH="$(awk -F= '/^BlockIOReadBandwith=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${BLOCK_IO_READ_BANDWITH}" ]
then
BLOCK_IO_READ_BANDWITH="BlockIOReadBandwith=${BLOCK_IO_READ_BANDWITH}"
SET_PROPERTY="true"
fi
BLOCK_IO_WEIGHT="$(awk -F= '/^BlockIOWeight=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${BLOCK_IO_WEIGHT}" ]
then
BLOCK_IO_WEIGHT="BlockIOWeight=${BLOCK_IO_WEIGHT}"
SET_PROPERTY="true"
fi
BLOCK_IO_WRITE_BANDWITH="$(awk -F= '/^BlockIOWriteBandwith=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${BLOCK_IO_WRITE_BANDWITH}" ]
then
BLOCK_IO_WRITE_BANDWITH="BlockIOWriteBandwith=${BLOCK_IO_WRITE_BANDWITH}"
SET_PROPERTY="true"
fi
CPU_QUOTA="$(awk -F= '/^CPUQuota=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${CPU_QUOTA}" ]
then
CPU_QUOTA="CPUQuota=${CPU_QUOTA}"
SET_PROPERTY="true"
fi
CPU_SHARES="$(awk -F= '/^CPUShares=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${CPU_SHARES}" ]
then
CPU_SHARES="CPUShares=${CPU_SHARES}"
SET_PROPERTY="true"
fi
MEMORY_LIMIT="$(awk -F= '/^MemoryLimit=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${MEMORY_LIMIT}" ]
then
MEMORY_LIMIT="MemoryLimit=${MEMORY_LIMIT}"
SET_PROPERTY="true"
fi
TASKS_MAX="$(awk -F= '/^TasksMax=/ { print $2 }' ${CONFIG}/${NAME}.conf)"
if [ -n "${TASKS_MAX}" ]
then
TASKS_MAX="TasksMax=${TASKS_MAX}"
SET_PROPERTY="true"
fi
fi
# Run
case "${SET_PROPERTY}" in
true)
${SETARCH} systemd-nspawn ${BIND} ${BOOT} ${CAPABILITY} ${DIRECTORY} ${DROP_CAPABILITY} ${MACHINE} ${NETWORK_BRIDGE} ${NETWORK_VETH_EXTRA} ${LINK_JOURNAL} ${REGISTER} & \
systemctl --runtime set-property ${NAME} ${BLOCK_IO_DEVICE_WEIGHT} ${BLOCK_IO_READ_BANDWITH} ${BLOCK_IO_WEIGHT} ${BLOCK_IO_WRITE_BANDWITH} ${CPU_QUOTA} ${CPU_SHARES} ${MEMORY_LIMIT} ${TASKS_MAX}
;;
*)
${SETARCH} systemd-nspawn ${BIND} ${BOOT} ${CAPABILITY} ${DIRECTORY} ${DROP_CAPABILITY} ${MACHINE} ${NETWORK_BRIDGE} ${NETWORK_VETH_EXTRA} ${LINK_JOURNAL} ${REGISTER}
;;
esac
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