Add lxc void template and xbps
This commit is contained in:
Daniel A. Maierhofer
199
roles/ariane/files/lxc-voidlinux
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199
roles/ariane/files/lxc-voidlinux
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#!/bin/bash
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# https://github.com/lxc/lxc/raw/stable-2.1/templates/lxc-voidlinux.in
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# template script for generating Void Linux container for LXC
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#
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#
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# lxc: linux Container library
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# Authors:
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# Gregor Reitzenstein <dean4devil@paranoidlabs.org>
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# Based on lxc-archlinux template by:
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# Alexander Vladimirov <alexander.idkfa.vladimirov@gmail.com>
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# John Lane <lxc@jelmail.com>
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Utility functions
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# Check if array $2 contains item $1
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containsElement() {
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local e
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for e in "${@:2}"; do [[ "$1" == "$e" ]] && return 0; done
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return 1
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}
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# split comma-separated string into an array
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# ${1} - string to split
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# ${2} - separator (default is ",")
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# ${result} - result value on success
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split_string() {
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local ifs=${IFS}
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IFS="${2:-,}"
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read -ra result < <(echo "${1}")
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IFS=${ifs}
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return 0
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}
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# Make sure the usual locations are in PATH
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export PATH=$PATH:/usr/sbin:/usr/bin:/sbin:/bin
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# defaults
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default_path="/var/lib/lxc"
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default_path="@LXCPATH@"
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shared_config="/usr/share/lxc/config/voidlinux.common.conf"
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userns_config="/usr/share/lxc/config/voidlinux.userns.conf"
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pkg_blacklist=("linux>=0" "e2fsprogs>=0" "btrfs-progs>=0" "xfsprogs>=0" "f2fs-tools>=0" "dosfstools>=0")
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base_packages=()
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for pkg in $(xbps-query -Mv --repository="http://repo2.voidlinux.eu/current/" -x base-system); do
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containsElement "$pkg" "${pkg_blacklist[@]}" || base_packages+=($pkg)
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done
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declare -a additional_packages
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copy_configuration() {
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mkdir -p "${config_path}"
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local config="${config_path}/config"
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echo "lxc.utsname = ${name}" >> "${config}"
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grep -q "^lxc.rootfs.path" "${config}" 2>/dev/null \
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|| echo "lxc.rootfs.path = ${rootfs_path}" >> "${config}"
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# Detect if were in a UserNS and include the right config
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if [ -z "${LXC_MAPPED_GID+x}" ] || [ -z "${LXC_MAPPED_UID+x}" ]; then
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echo "lxc.include = ${userns_config}" >> "${config}"
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else
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echo "lxc.include = ${shared_config}" >> "${config}"
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fi
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if [ $? -ne 0 ]; then
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echo "Failed to configure container"
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return 1
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fi
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return 0
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}
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install_void() {
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if ! yes | xbps-install -Sy -R http://repo2.voidlinux.eu/current -r "${rootfs_path}" "${base_packages[@]}"
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then
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echo "Failed to install container packages"
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return 1
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fi
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}
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usage() {
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cat <<EOF
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usage:
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${1} -n|--name=<container_name> [-p|--path=<path>] [-a|--arch=<arch of the container>]
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[-r|--root_password=<root password>] [-P|--packages=<pkg1,pkg2,...>] [-h|--help]
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Mandatory args:
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-n,--name container name, used to as an identifier for that container from now on
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Optional args:
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-p,--path path to where the container rootfs will be created (${default_path})
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--rootfs path for actual container rootfs, (${default_path}/rootfs)
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-P,--packages preinstall additional packages, comma-separated list
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-c,--config use specified pacman config when installing container packages
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-a,--arch use specified architecture instead of host's architecture
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-r,--root_password set container root password
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-h,--help print this help
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EOF
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return 0
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}
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options=$(getopt -o hp:P:n:c:r: -l help,rootfs:,path:,packages:,name:,config:,root_password:,mapped-uid:,mapped-gid: -- "${@}")
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if [ ${?} -ne 0 ]; then
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usage "$(basename "${0}")"
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exit 1
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fi
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eval set -- "${options}"
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while true
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do
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case "${1}" in
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-h|--help) usage "${0}" && exit 0;;
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-p|--path) path=${2}; shift 2;;
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-n|--name) name=${2}; shift 2;;
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-c|--config) config_path=${2}; shift 2;;
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--rootfs) rootfs_path=${2}; shift 2;;
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-P|--packages) additional_packages=${2}; shift 2;;
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-r|--root_password) root_passwd=${2}; shift 2;;
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--mapped-uid) LXC_MAPPED_UID=$2; shift 2;;
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--mapped-gid) LXC_MAPPED_GID=$2; shift 2;;
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--) shift 1; break ;;
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*) break ;;
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esac
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done
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if [ -z "${name}" ]; then
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echo "missing required 'name' parameter"
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exit 1
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fi
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type xbps-install >/dev/null 2>&1
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if [ ${?} -ne 0 ]; then
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echo "'xbps-install' command is missing."
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fi
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type xbps-query >/dev/null 2>&1
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if [ ${?} -ne 0 ]; then
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echo "'xbps-query' command is missing."
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fi
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if [ -z "${rootfs_path}" ]; then
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rootfs_path="${path}/rootfs"
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fi
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config_path="${path}"
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revert() {
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echo "Interrupted, cleaning up"
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lxc-destroy -n "${name}"
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rm -rf "${path:?}/${name}"
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rm -rf "${default_path:?}/${name}"
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exit 1
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}
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trap revert SIGHUP SIGINT SIGTERM
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copy_configuration
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if [ $? -ne 0 ]; then
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echo "Failed to write configuration file"
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rm -rf "${config_path}"
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exit 1
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fi
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if [ ${#additional_packages[@]} -gt 0 ]; then
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split_string "${additional_packages}"
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base_packages+=(${result[@]})
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fi
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mkdir -p "${rootfs_path}"
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install_void
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if [ ${?} -ne 0 ]; then
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echo "Failed to install Void Linux"
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rm -rf "${config_path}" "${path}"
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exit 1
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fi
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if [ -n "${root_passwd}" ]; then
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echo "root:${root_passwd}" | chroot "${rootfs_path}" chpasswd
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fi
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cat << EOF
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Void Linux Container ${name} has been successfully created. The configuration is
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stored in ${config_path}/config. Please refer to https://wiki.voidlinux.eu for
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information regarding Void Linux.
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EOF
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