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gentoo: Initial template
Signed-off-by: gza <lxc@zitta.fr> Acked-by: Stéphane Graber <stgraber@ubuntu.com>
This commit is contained in:
lxc@zitta.fr
Stéphane Graber
parent
c8ad5f4623
commit
f8d0243a78
1
.gitignore
vendored
1
.gitignore
vendored
@ -34,6 +34,7 @@ templates/lxc-cirros
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templates/lxc-debian
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templates/lxc-download
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templates/lxc-fedora
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templates/lxc-gentoo
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templates/lxc-openmandriva
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templates/lxc-opensuse
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templates/lxc-oracle
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23
configure.ac
23
configure.ac
@ -632,22 +632,23 @@ AC_CONFIG_FILES([
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hooks/Makefile
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templates/Makefile
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templates/lxc-alpine
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templates/lxc-altlinux
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templates/lxc-archlinux
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templates/lxc-busybox
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templates/lxc-centos
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templates/lxc-cirros
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templates/lxc-debian
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templates/lxc-download
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templates/lxc-fedora
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templates/lxc-gentoo
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templates/lxc-openmandriva
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templates/lxc-opensuse
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templates/lxc-oracle
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templates/lxc-plamo
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templates/lxc-sshd
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templates/lxc-ubuntu
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templates/lxc-ubuntu-cloud
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templates/lxc-opensuse
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templates/lxc-busybox
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templates/lxc-centos
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templates/lxc-fedora
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templates/lxc-openmandriva
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templates/lxc-oracle
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templates/lxc-altlinux
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templates/lxc-sshd
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templates/lxc-archlinux
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templates/lxc-alpine
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templates/lxc-plamo
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src/Makefile
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src/lxc/Makefile
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@ -10,6 +10,7 @@ templates_SCRIPTS = \
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lxc-debian \
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lxc-download \
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lxc-fedora \
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lxc-gentoo \
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lxc-openmandriva \
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lxc-opensuse \
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lxc-oracle \
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828
templates/lxc-gentoo.in
Normal file
828
templates/lxc-gentoo.in
Normal file
@ -0,0 +1,828 @@
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#!/bin/bash
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#
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# LXC template for gentoo
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#
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# Author: Guillaume Zitta <lxc@zitta.fr>
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#
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# Widely inspired from lxc-gentoo script at https://github.com/globalcitizen/lxc-gentoo
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#
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# this version is reworked with :
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# - out of the lxc-create compat
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# - vanilla gentoo config
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# - ready to use cache
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#
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# Ensure strict root's umask doesen't render the VM unusable
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umask 022
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################################################################################
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# Various helper functions
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################################################################################
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# param: $1: the name of the lock
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# param: $2: the timeout for the lock
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# The rest contain the command to execute and its parameters
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execute_exclusively()
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{
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mkdir -p @LOCALSTATEDIR@/lock/subsys/
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local lock_name="$1"
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local timeout="$2"
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shift 2
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{
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printf "Attempting to obtain an exclusive lock (timeout: %s sec) named \"%s\"...\n" "${timeout}" "$lock_name"
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flock -x -w "${timeout}" 50
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if [[ $? -ne 0 ]]; then
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printf " => unable to obtain lock, aborting.\n"
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return 2
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else
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printf " => done.\n"
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fi
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printf " => Executing \"%s\"\n" "$*"
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"$@"
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retval=$?
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} 50> "@LOCALSTATEDIR@/lock/subsys/lxc-gentoo-${lock_name}"
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return $retval
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}
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# a die function is always a good idea
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die()
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{
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printf "\n[the last exit code leading to this death was: %s ]\n" "$?"
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local retval="$1"
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shift 1
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printf "$@"
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exit "$retval"
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}
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# gentoo arch/variant detection
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set_default_arch()
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{
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printf "### set_default_arch: default arch/variant autodetect...\n"
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arch=$(arch)
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if [[ $arch =~ i.86 ]]; then
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arch="x86"
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variant="x86"
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elif [[ $arch == "x86_64" ]]; then
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arch="amd64"
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variant="amd64"
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elif [[ $arch =~ arm.* ]]; then
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arch="arm"
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variant="armv7a"
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else
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#who knows, it may work...
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printf " => warn: unexpected arch:${arch} let me knows if it works :)\n"
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variant="${arch}"
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fi
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printf " => Got: arch=%s variant=%s\n" "${arch}" "${variant}"
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}
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store_user_message()
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{
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user_message="${user_message}=> $@\n"
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}
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################################################################################
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# CACHE Preparation
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################################################################################
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# during setup cachedir is $cacheroot/partial-$arch-$variant
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# at the end, it will be $cacheroot/rootfs-$arch-$variant
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cache_setup(){
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partialfs="${cacheroot}/partial-${arch}-${variant}"
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#if cache exists and flush not needed, return
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[[ -d "${cachefs}" && -z "${flush_cache}" ]] && return 0
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printf "###### cache_setup(): doing cache preparation\n"
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local retval=1
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#clean from failed previous run
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rm -rf "${partialfs}"
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mkdir -p "${partialfs}"
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#let's go
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cache_precheck && \
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cache_stage3 && \
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cache_portage && \
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cache_inittab && \
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cache_net && \
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cache_dev && \
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cache_openrc && \
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rm -rf "${cachefs}" && \
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mv "${partialfs}" "${cachefs}" && \
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printf "###### cache_setup: Cache should be ready\n"
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return $?
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}
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cache_precheck()
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{
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printf "### cache_precheck(): doing some pre-start checks ...\n"
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# never hurts to have a fail-safe.
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[[ -n "${cacheroot//\/}" ]] \
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|| die 8 "\$cacheroot (%s) IS EMPTY OR MADE OF ONLY DIRECTORY SEPERATORS, THIS IS *VERY* BAD!\n" "${cacheroot}"
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}
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#get latest stage3 tarball
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cache_stage3()
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{
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printf "### cache_stage3(): stage3 cache deployment...\n"
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if [ -z "${tarball}" ]; then
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#variables init
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local stage3_baseurl="${mirror}/releases/${arch}/autobuilds"
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# get latest-stage3....txt file for subpath
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local stage3_pointer="${stage3_baseurl}/latest-stage3-${variant}.txt"
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printf "Determining path to latest Gentoo %s (%s) stage3 archive...\n" "${arch}" "${variant}"
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printf " => downloading and processing %s\n" "${stage3_pointer}"
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local stage3_latest_tarball=$(wget -q -O - "${stage3_pointer}" | tail -n1 ) \
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|| die 6 "Error: unable to fetch\n"
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printf " => Got: %s\n" "${stage3_latest_tarball}"
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printf "Downloading/untarring the actual stage3 tarball...\n"
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wget -O - "${stage3_baseurl}/${stage3_latest_tarball}" | tar -xjpf - -C "${partialfs}" \
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|| die 6 "Error: unable to fetch or untar\n"
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printf " => extracted to: %s\n" "${partialfs}"
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else
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printf "Extracting the stage3 tarball...\n"
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tar -xpf "${tarball}" -C "${partialfs}" || die 6 "unable to untar ${tarball} to ${partialfs}"
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fi
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#check if it chroots
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printf "chroot test..."
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chroot ${partialfs} /bin/true || die 1 "Error: chroot %s /bin/true, failed" "${partialfs}"
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printf " OK\n"
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printf " => stage3 cache extracted in : %s\n" "${partialfs}"
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return 0
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}
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cache_portage()
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{
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printf "### cache_portage: caching portage tree tarball...\n"
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[[ -z "${flush_cache}" && -f "${portage_cache}" ]] && return 0
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rm -f ${portage_cache}
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printf "Downloading Gentoo portage (software build database) snapshot...\n"
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execute_exclusively portage 60 wget -O "${portage_cache}" "${mirror}/snapshots/portage-latest.tar.bz2" \
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|| die 6 "Error: unable to fetch\n"
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printf " => done.\n"
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}
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# custom inittab
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cache_inittab()
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{
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printf "### cache_inittab: tuning inittab...\n"
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INITTAB="${partialfs}/etc/inittab"
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[[ -w "$INITTAB" ]] || die 1 "Error: $INITTAB is not writeable"
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# create console
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echo "# Lxc main console" >> "$INITTAB"
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echo "1:12345:respawn:/sbin/agetty -a root --noclear 115200 console linux" >> "$INITTAB"
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# finally we add a pf line to enable clean shutdown on SIGPWR (issue 60)
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echo "# clean container shutdown on SIGPWR" >> "$INITTAB"
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echo "pf:12345:powerwait:/sbin/halt" >> "$INITTAB"
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# we also blank out /etc/issue here in order to prevent delays spawning login
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# caused by attempts to determine domainname on disconnected containers
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sed -i 's/[\][Oo]//g' "${partialfs}/etc/issue"
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}
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cache_net()
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{
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printf "### cache_net: doing some useful net tuning...\n"
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# useful for chroot
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# /etc/resolv.conf
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grep -i 'search ' /etc/resolv.conf > "${partialfs}/etc/resolv.conf"
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grep -i 'nameserver ' /etc/resolv.conf >> "${partialfs}/etc/resolv.conf"
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# fix boot-time interface config wipe under aggressive cap drop
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# (openrc 0.9.8.4 ~sep 2012 - https://bugs.gentoo.org/show_bug.cgi?id=436266)
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# initial warkaround was: sed -i -e 's/^#rc_nostop=""/rc_nostop="net.eth0 net.lo"/' "${partialfs}/etc/rc.conf"
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# but this one does not depends on interfaces names
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echo 'rc_keyword="-stop"' >> "${partialfs}/etc/conf.d/net"
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}
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cache_dev()
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{
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printf "### cache_dev(): /dev tuning...\n"
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#Wait for https://bugs.gentoo.org/show_bug.cgi?id=496054
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mkdir "${partialfs}/dev/pts"
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if [ -n "${nettun}" ]; then
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mkdir -m 755 "${partialfs}/net"
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mknod -m 666 "${partialfs}/net/tun" c 10 200
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fi
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return 0
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}
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# fix openrc system
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cache_openrc()
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{
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printf "### cache_openrc(): doing openrc tuning\n"
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#Wait for https://bugs.gentoo.org/show_bug.cgi?id=496054
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chroot "${partialfs}" sed s/-lxc//g -i "/etc/init.d/devfs"
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return 0
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}
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################################################################################
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# CONTAINER Preparation
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################################################################################
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container_setup() {
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printf "##### container_setup(): starting container setup\n"
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#in most cases lxc-create should have provided a copy of default lxc.conf
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#let's tag where template starts, or just create the files
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echo '### lxc-gentoo template stuff starts here' >> "$path/config"
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#Determine rootfs
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#If backingstore was specified, lxc.rootfs should be present or --rootfs did the rootfs var creation
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if [ -z "${rootfs}" ]; then
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rootfs=`awk -F= '$1 ~ /^lxc.rootfs/ { print $2 }' "$path/config" 2>/dev/null`
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if [ -z "${rootfs}" ]; then
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#OK it's default
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rootfs="${path}/rootfs"
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fi
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fi
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store_user_message "rootfs of container is : ${rootfs}"
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store_user_message "config of container is : ${path}/config"
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container_precheck && \
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container_rootfs && \
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container_consoles && \
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container_tz && \
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container_portage && \
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container_net && \
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container_hostname && \
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container_auth && \
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container_conf
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if [ $? -ne 0 ]; then
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die 1 "container_setup(): one step didn't complete, sorry\n"
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fi
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printf "###### container_setup(): container should be ready to start!\n"
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printf "\n\n"
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printf "You could now use you container with: lxc-start -n %s\n" "${name}"
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printf "little things you should know about your container:\n"
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printf "${user_message}"
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return 0
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}
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container_precheck()
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{
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printf "### container_precheck(): doing some pre-start checks ...\n"
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# never hurts to have a fail-safe.
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[[ -n "${name//\/}" ]] \
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|| die 8 "\$name (%s) IS EMPTY OR MADE OF ONLY DIRECTORY SEPERATORS, THIS IS *VERY* BAD!\n" "${name}"
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[[ -n "${rootfs//\/}" ]] \
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|| die 8 "\$rootfs (%s) IS EMPTY OR MADE OF ONLY DIRECTORY SEPERATORS, THIS IS *VERY* BAD!\n" "${rootfs}"
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[[ -n "${cachefs//\/}" ]] \
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|| die 8 "\$cachefs (%s) IS EMPTY OR MADE OF ONLY DIRECTORY SEPERATORS, THIS IS *VERY* BAD!\n" "${cachefs}"
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# check if the rootfs already exists
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[[ -d "${rootfs}/etc" ]] && die 18 "Error: \$rootfs (%s) already exists!" "${rootfs}"
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# check cache
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[[ ! -d "${cachefs}/etc" ]] && die 1 "Error: \$cachefs (%s) not found!" "${cachefs}"
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return 0
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}
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container_rootfs()
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{
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printf "#### container_rootfs(): copying rootfs %s from cache %s ...\n" "${rootfs}" "${cachefs}"
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tar -c -f - -C "${cachefs}" . | tar -x -p -f - -C "${rootfs}" || die 1 "Error: cache copy to rootfs failed"
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printf "chroot test..."
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chroot "${rootfs}" /bin/true || die 1 "Error: 'chroot %s /bin/true' failed"
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printf " OK\n"
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printf " => done\n"
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return 0
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}
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container_consoles() {
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printf "#### container_consoles(): setting container consoles ...\n"
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|
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# disable unwanted ttys
|
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if [[ ${tty} < 6 ]]; then
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local mindis=$(( ${tty} + 1 ))
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sed -i "s/^c[${mindis}-6]/#&/" "${rootfs}/etc/inittab"
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fi
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printf " => main console + ${tty} ttys\n"
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if [[ -z "${autologin}" ]]; then
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sed 's/agetty -a root/agetty/' -i "${rootfs}/etc/inittab"
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elif [[ "${user}" != "root" ]]; then
|
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sed "s/agetty -a root/agetty -a ${user}/" -i "${rootfs}/etc/inittab"
|
||||
printf " => Autologin on main console for %s enabled\n" "${user}"
|
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[[ -z "${forced_password}" ]] && unset password
|
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store_user_message "${user} has autologin on main console"
|
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else
|
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printf " => Autologin on main console for root enabled\n"
|
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[[ -z "${forced_password}" ]] && unset password
|
||||
store_user_message "${user} has autologin on main console"
|
||||
fi
|
||||
printf " => done\n"
|
||||
}
|
||||
|
||||
container_tz()
|
||||
{
|
||||
printf "#### container_tz(): setting container timezone ...\n"
|
||||
|
||||
#let's try to copy it from host
|
||||
if [ -L "/etc/localtime" ]; then
|
||||
#host has a symlink
|
||||
#let see if we can reproduct symlink
|
||||
target=$(readlink /etc/localtime)
|
||||
if [[ "$target" != "" ]]; then
|
||||
if [ -f "${rootfs}/${target}" ]; then
|
||||
#same target exists in container
|
||||
chroot "${rootfs}" ln -sf "${target}" "/etc/localtime"
|
||||
printf " => host symlink reproducted in container : %s\n" "${target}"
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||||
store_user_message "timezone copyed from host"
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||||
return 0
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
|
||||
if [ -e /etc/localtime ]; then
|
||||
# duplicate host timezone
|
||||
cat /etc/localtime > "${rootfs}/etc/localtime"
|
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printf " => host localtime copyed to container\n"
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store_user_message "timezone was staticly copyed from host"
|
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else
|
||||
# otherwise set up UTC
|
||||
chroot "${rootfs}" ln -sf /usr/share/zoneinfo/UTC /etc/localtime
|
||||
printf " => fallback: fixed to UTC\n"
|
||||
store_user_message "timezone was fixed to UTC"
|
||||
fi
|
||||
}
|
||||
|
||||
|
||||
container_portage()
|
||||
{
|
||||
printf "#### container_portage(): setting container portage... \n"
|
||||
|
||||
#default entry for conf
|
||||
portage_mount="#container set with private portage tree, no mount here"
|
||||
|
||||
printf "Warnings are normal here, don't worry\n"
|
||||
#container repos detection
|
||||
if chroot ${rootfs} portageq get_repo_path / gentoo > /dev/null ; then
|
||||
portage_container="$(chroot ${rootfs} portageq get_repo_path / gentoo)"
|
||||
else
|
||||
die 1 "Failed to figure out container portage tree location with portageq get_repo_path / gentoo\n"
|
||||
fi
|
||||
|
||||
if [[ -n "${private_portage}" ]]; then
|
||||
container_private_portage
|
||||
return 0
|
||||
fi
|
||||
|
||||
if [ -z "${portage_dir}" ]; then
|
||||
#gentoo host detection
|
||||
printf "trying to guess portage_dir from host...\n"
|
||||
portage_dir="$(portageq get_repo_path / gentoo 2>/dev/null)"
|
||||
if [ ! -d "${portage_dir}/profiles" ]; then
|
||||
printf " => host portage detection failed (not gentoo host), fallback to private portage tree\n"
|
||||
container_private_portage
|
||||
return 0
|
||||
fi
|
||||
else
|
||||
if [ ! -d "${portage_dir}/profiles" ]; then
|
||||
die 1 "specified portage_dir (%s) does not contains profiles, is it a portage tree ?\n" "${portage_dir}"
|
||||
fi
|
||||
fi
|
||||
|
||||
# if we are here, we have shared portage_dir
|
||||
#ensure dir exists
|
||||
chroot "${rootfs}" mkdir ${portage_container}
|
||||
portage_mount="#container set with shared portage
|
||||
lxc.mount.entry=${portage_dir} ${portage_container/\//} none ro,bind 0 0"
|
||||
store_user_message "container has a shared portage from host's ${portage_dir} to ${portage_container/\//}"
|
||||
#Let's propose binary packages
|
||||
cat <<- EOF >> "${rootfs}/etc/portage/make.conf"
|
||||
# enable this to store built binary packages
|
||||
#FEATURES="\$FEATURES buildpkg"
|
||||
|
||||
# enable this to use built binary packages
|
||||
#EMERGE_DEFAULT_OPTS="\${EMERGE_DEFAULT_OPTS} --usepkg"
|
||||
|
||||
# enable and *tune* this kind of entry to slot binaries, specialy if you use multiples archs and variants
|
||||
#PKGDIR="\${PKGDIR}/amd64
|
||||
#or PKGDIR="\${PKGDIR}/hardened"
|
||||
EOF
|
||||
printf " => portage stuff done, see /etc/portage/make.conf for additionnal tricks\n"
|
||||
|
||||
}
|
||||
|
||||
container_private_portage()
|
||||
{
|
||||
#called from container_portage() do not call directly from container_setup
|
||||
printf "# untaring private portage to %s from %s ... \n" "${rootfs}/${portage_container}" "${portage_cache}"
|
||||
mkdir -p "${rootfs}/${portage_container}"
|
||||
execute_exclusively portage 60 tar -xp --strip-components 1 -C "${rootfs}/${portage_container}" -f "${portage_cache}" \
|
||||
|| die 2 "Error: unable to extract the portage tree.\n"
|
||||
store_user_message "container has its own portage tree at ${portage_container}"
|
||||
printf "=> done\n"
|
||||
}
|
||||
|
||||
#helper func for container_genconf_net()
|
||||
nic_write()
|
||||
{
|
||||
#display with gentoo's confd.net format
|
||||
echo "config_${nic_name}=\"${nic_conf}\""
|
||||
#add to managed list
|
||||
[[ "${nic_conf}" == "dhcp" ]] && nic_managed="${nic_managed} ${nic_name}"
|
||||
[[ "${nic_conf}" == "null" ]] && nic_unmanaged="${nic_unmanaged} ${nic_name}"
|
||||
[[ -z "${nic_hwaddr}" && ${nic_type} == "veth" ]] && nic_wo_hwaddr="${nic_wo_hwaddr} ${nic_name}"
|
||||
nic_writed=1
|
||||
}
|
||||
|
||||
#Analyse lxc.conf and print conf.d/net content
|
||||
container_conf_net()
|
||||
{
|
||||
local file=${1}
|
||||
[[ -z "${nic_last}" ]] && nic_last=-1
|
||||
[[ -z "${nic_named}" ]] && nic_named=0
|
||||
OLDIFS=$IFS
|
||||
IFS="
|
||||
"
|
||||
#I'll drink champagne the day we do templates in python
|
||||
#let's do some drity bash things
|
||||
for line in $( sed -r "s/[ ]*=[ ]*/_real_ugly_sep_42_/" "${file}" ); do
|
||||
key=$(echo "${line}" | sed 's/_real_ugly_sep_42_.*$//')
|
||||
value=$(echo "${line}" | sed 's/^.*_real_ugly_sep_42_//')
|
||||
|
||||
#new nic !
|
||||
if [[ "${key}" == "lxc.network.type" ]]; then
|
||||
#we don't know what to do with it.
|
||||
[[ "${value}" == "empty" ]] && continue
|
||||
|
||||
#write conf from previous loops
|
||||
[[ "${nic_writed}" == "0" ]] && nic_write
|
||||
|
||||
#init defaults
|
||||
let nic_last=nic_last+1
|
||||
|
||||
nic_writed=0
|
||||
#if 1 named between 2 not named: last is eth1
|
||||
#=> Number is ID munis number of named NIC before
|
||||
nic_name="eth$(( ${nic_last} - ${nic_named} ))"
|
||||
nic_conf="dhcp"
|
||||
nic_type="${value}"
|
||||
fi
|
||||
|
||||
if [[ "${key}" == "lxc.network.hwaddr" ]]; then
|
||||
nic_hwaddr=1
|
||||
fi
|
||||
|
||||
if [[ "${key}" =~ ^lxc.network.ipv(4|6) ]]; then
|
||||
#tell openrc to not manage this NIC as LXC set there address
|
||||
nic_conf="null"
|
||||
fi
|
||||
if [[ "${key}" =~ ^lxc.network.name ]]; then
|
||||
nic_name="${value}"
|
||||
let nic_named=nic_named+1
|
||||
fi
|
||||
if [[ "${key}" == "lxc.include" ]]; then
|
||||
#recursive into include
|
||||
container_conf_net "${value}"
|
||||
fi
|
||||
done
|
||||
#write conf from previous loops
|
||||
[[ "${nic_writed}" == "0" ]] && nic_write
|
||||
IFS=$OLDIFS
|
||||
}
|
||||
|
||||
container_net()
|
||||
{
|
||||
printf "container_net(): setting container network conf... \n"
|
||||
|
||||
#Analyse network configuration in config
|
||||
container_conf_net "$path/config" >> "${rootfs}/etc/conf.d/net"
|
||||
|
||||
# found how much nic finaly have
|
||||
nic_count=$(( ${nic_last} + 1 ))
|
||||
|
||||
# unless openrc manage a nic, we now have to force openrc to automatic
|
||||
# provision of the 'net' dep. If we do not, network dependent services
|
||||
# will fail to load
|
||||
if [[ -z "${nic_managed}" ]]; then
|
||||
#tell openrc that lxc already did the work
|
||||
echo 'rc_provide="net"' >> "$CACHE/etc/rc.conf"
|
||||
fi
|
||||
|
||||
#No NIC ?
|
||||
if [[ ${nic_count} == 0 ]]; then
|
||||
#If no Nic, no need to continue
|
||||
bridge=$(brctl show | awk 'NR==2 {print $1}')
|
||||
if [[ "${bridge}" != "" ]]; then
|
||||
store_user_message "No network interface for this container
|
||||
It's a pitty, you have bridge, ${bridge}.
|
||||
If it is for Lxc, use it next time by adding this to your default.conf :
|
||||
lxc.network.type = veth
|
||||
lxc.network.link = ${bridge}
|
||||
lxc.network.flags = up
|
||||
lxc.network.hwaddr = fe:xx:xx:xx:xx:xx"
|
||||
return 0
|
||||
else
|
||||
store_user_message "No network interface for this container"
|
||||
return 0
|
||||
fi
|
||||
fi
|
||||
|
||||
#For each openrc managed nic, activate
|
||||
for nic in ${nic_managed}
|
||||
do
|
||||
chroot "${rootfs}" ln -s net.lo "/etc/init.d/net.${nic}"
|
||||
chroot "${rootfs}" rc-update add net.${nic} default
|
||||
done
|
||||
|
||||
#Warn about dynamic hwaddr
|
||||
if [[ -n "${nic_wo_hwaddr}" ]]; then
|
||||
store_user_message "Warning, these veth NIC don't have fixed hwaddr :
|
||||
${nic_wo_hwaddr}
|
||||
|
||||
see http://lists.linuxcontainers.org/pipermail/lxc-devel/2013-December/006736.html
|
||||
and man lxc.conf"
|
||||
fi
|
||||
|
||||
printf " => network conf done.\n"
|
||||
}
|
||||
|
||||
# custom hostname
|
||||
container_hostname()
|
||||
{
|
||||
printf "#### container_hostname(): setting hostname... \n"
|
||||
printf "hostnale=%s\n" "${name}" > "${rootfs}/etc/conf.d/hostname"
|
||||
printf " => done.\n"
|
||||
}
|
||||
|
||||
container_auth()
|
||||
{
|
||||
printf "#### container_auth(): setting authentification... \n"
|
||||
if [[ "${user}" != "root" ]]; then
|
||||
printf " non root user requested, creating... \n"
|
||||
chroot "${rootfs}" useradd --create-home -s /bin/bash "${user}" || die 1 "failed to create user ${user}"
|
||||
printf " => user %s created\n" "${user}"
|
||||
fi
|
||||
store_user_message "Connection user is ${user}"
|
||||
#Home of user
|
||||
auth_home=$(chroot "${rootfs}" getent passwd "${user}" | cut -d : -f 6)
|
||||
if [[ -r "${auth_key}" ]]; then
|
||||
printf " deploying auth_key %s for user %s ...\n" "${auth_key}" "${user}"
|
||||
mkdir -p "${rootfs}/${auth_home}/.ssh"
|
||||
cat >> "${rootfs}/${auth_home}/.ssh/authorized_keys"
|
||||
chroot "${rootfs}" chown "${user}:" "${auth_home}/.ssh/authorized_keys"
|
||||
printf " => inserted public key in %s/.ssh/authorized_keys\n" "${auth_home}"
|
||||
[[ -z "${forced_password}" ]] && unset password
|
||||
store_user_message "${user} has the ssh key you gived us"
|
||||
fi
|
||||
|
||||
if [[ -n "${password}" ]]; then
|
||||
printf " setting password for %s ...\n" "${user}"
|
||||
echo "${user}:${password}" | chroot "${rootfs}" chpasswd || die 1 "failed to change password"
|
||||
printf " => done. if you didn't specify , default is 'toor'\n"
|
||||
if [[ -n "${forced_password}" ]]; then
|
||||
store_user_message "${user} has the password you give for him"
|
||||
else
|
||||
store_user_message "${user} has the default password 'toor', please change it ASAP"
|
||||
fi
|
||||
fi
|
||||
|
||||
printf " => done.\n"
|
||||
}
|
||||
|
||||
################################################################################
|
||||
# lxc configuration files
|
||||
################################################################################
|
||||
|
||||
container_conf()
|
||||
{
|
||||
printf "container_configuration(): making lxc configuration file... \n"
|
||||
|
||||
#at this point if there
|
||||
conf_file="${path}/config"
|
||||
|
||||
if grep -q "^lxc.rootfs" "${conf_file}" ; then
|
||||
#lxc-create already provided one
|
||||
conf_rootfs_line=""
|
||||
else
|
||||
conf_rootfs_line="lxc.rootfs = $(readlink -f "${rootfs}")"
|
||||
fi
|
||||
if [[ "${arch}" == "x86" || "${arch}" == "amd64" ]]; then
|
||||
local conf_arch_line="lxc.arch = ${arch}"
|
||||
else
|
||||
local conf_arch_line="# lxc.arch = ${arch}"
|
||||
fi
|
||||
|
||||
conf_lxc_cap_drop="sys_module mac_admin mac_override mknod sys_time"
|
||||
conf_sysfs="lxc.mount.entry=sys sys sysfs defaults 0 0"
|
||||
|
||||
#more aggressive configuration, for your safety. But less things may work
|
||||
if [ -n "${more_secure}" ]; then
|
||||
conf_lxc_cap_drop="${conf_lxc_cap_drop} audit_control audit_write dac_read_search fsetid ipc_owner linux_immutable setfcap sys_admin sys_boot sys_pacct sys_ptrace sys_rawio sys_resource sys_tty_config syslog"
|
||||
conf_sysfs="# disabled for security, see http://blog.bofh.it/debian/id_413
|
||||
#lxc.mount.entry=sys sys sysfs defaults 0 0"
|
||||
fi
|
||||
|
||||
cat <<- EOF >> "${conf_file}"
|
||||
# sets container architecture
|
||||
# If desired architecture != amd64 or x86, then we leave it unset as
|
||||
# LXC does not oficially support anything other than x86 or amd64.
|
||||
${conf_arch_line}
|
||||
|
||||
# console access
|
||||
lxc.tty = ${tty}
|
||||
lxc.pts = 1024
|
||||
|
||||
# set the hostname
|
||||
lxc.utsname = ${name}
|
||||
|
||||
${conf_rootfs_line}
|
||||
${portage_mount}
|
||||
${conf_sysfs}
|
||||
|
||||
# this part is based on 'linux capabilities', see: man 7 capabilities
|
||||
# eg: you may also wish to drop 'cap_net_raw' (though it breaks ping)
|
||||
#
|
||||
# WARNING: the security vulnerability reported for 'cap_net_admin' at
|
||||
# http://mainisusuallyafunction.blogspot.com/2012/11/attacking-hardened-linux-systems-with.html
|
||||
# via JIT spraying (the BPF JIT module disabled on most systems was used
|
||||
# in the example, but others are suggested vulnerable) meant that users
|
||||
# with root in a container, that capability and kernel module may escape
|
||||
# the container. ALWAYS be extremely careful granting any process root
|
||||
# within a container, use a minimal configuration at all levels -
|
||||
# including the kernel - and multiple layers of security on any system
|
||||
# where security is a priority. note that not only LXC but PAX (and
|
||||
# others?) were vulnerable to this issue.
|
||||
#
|
||||
# conservative: lxc.cap.drop = sys_module mknod mac_override sys_boot
|
||||
# aggressive follows. (leaves open: chown dac_override fowner ipc_lock kill lease net_admin net_bind_service net_broadcast net_raw setgid setuid sys_chroot)
|
||||
# lxc.cap.drop = audit_control audit_write dac_read_search fsetid ipc_owner linux_immutable mac_admin mac_override mknod setfcap sys_admin sys_boot sys_module sys_pacct sys_ptrace sys_rawio sys_resource sys_time sys_tty_config syslog
|
||||
|
||||
lxc.cap.drop = ${conf_lxc_cap_drop}
|
||||
|
||||
${conf_mounts}
|
||||
|
||||
# deny access to all devices by default, explicitly grant some permissions
|
||||
#
|
||||
# format is [c|b] [major|*]:[minor|*] [r][w][m]
|
||||
# ^ ^ ^
|
||||
# char/block -' \`- device number \`-- read, write, mknod
|
||||
#
|
||||
# first deny all...
|
||||
lxc.cgroup.devices.deny = a
|
||||
# /dev/null and zero
|
||||
lxc.cgroup.devices.allow = c 1:3 rw
|
||||
lxc.cgroup.devices.allow = c 1:5 rw
|
||||
# /dev/{,u}random
|
||||
lxc.cgroup.devices.allow = c 1:9 rw
|
||||
lxc.cgroup.devices.allow = c 1:8 r
|
||||
# /dev/pts/*
|
||||
lxc.cgroup.devices.allow = c 136:* rw
|
||||
lxc.cgroup.devices.allow = c 5:2 rw
|
||||
# /dev/tty{0,1}
|
||||
lxc.cgroup.devices.allow = c 4:1 rwm
|
||||
lxc.cgroup.devices.allow = c 4:0 rwm
|
||||
# /dev/tty
|
||||
lxc.cgroup.devices.allow = c 5:0 rwm
|
||||
# /dev/console
|
||||
lxc.cgroup.devices.allow = c 5:1 rwm
|
||||
EOF
|
||||
if [ -n "${nettun}" ]; then
|
||||
cat <<- EOF >> "${conf_file}"
|
||||
# /dev/net/tun
|
||||
lxc.cgroup.devices.allow = c 10:200 rwm
|
||||
EOF
|
||||
fi
|
||||
printf " => done.\n"
|
||||
}
|
||||
|
||||
usage()
|
||||
{
|
||||
cat <<EOF
|
||||
$1 -h|--help [-a|--arch <arch>] [-v|--variant <variant>] [-P|--private-portage] [--portage-dir <protagedir>] [-t|--tarball <stage3file>]
|
||||
[-F|--flush-cache] [-c|--cache-only] [-u|--user <username>] [-w|--password <password>] [-S|--auth-key <keyfile>]
|
||||
[-s|--more-secure] [-m|--mirror <gentoomirror>] [--tty <number>] [--nettun]
|
||||
|
||||
arch: the container architecture (e.g. amd64): defaults to host arch (currently: '${arch}')
|
||||
If you choose one that needs emulation
|
||||
tested: amd64, x86
|
||||
You could try any other gentoo arch, why not...
|
||||
|
||||
variant: gentoo's Architecture variant as of dec 2013 : (currently: '${variant}')
|
||||
for amd64 arch: amd64 (default), amd64-hardened+nomultilib, amd64-hardened, amd64-nomultilib, x32
|
||||
for x86 arch: i686 (default), i486, i686-hardened
|
||||
for arm arch: armv7a (default), armv7a_hardfp, armv6j, armv6j_hardfp, armv5tel, armv4tl
|
||||
|
||||
private-portage: by default, /usr/portage is mount-binded with host one if exists (currently: '${private_portage}')
|
||||
this force container to have his own copy
|
||||
|
||||
portage-dir: portage dir used for shared portage
|
||||
by default the host on if any (currently: '${portage_dir}')
|
||||
|
||||
tarball: force usage of local stage3 archive (currently: '${arch}')
|
||||
If empty, latest will be downloaded
|
||||
|
||||
flush-cache: do like there is no previous cache
|
||||
|
||||
cache-only: just ensure cache is present
|
||||
if cache exists and "flush-cache" not specified, does nothing
|
||||
|
||||
user: user used in auth oriented options (currently: '${user}')
|
||||
|
||||
password: password for user (currently: '${password}')
|
||||
if default, usage of auth-key will disable password setting
|
||||
|
||||
autologin: enable autologin for user (currently: '${autologin}')
|
||||
This unset default password setting
|
||||
|
||||
auth-key: SSH Public key file to inject into container for user (currently: '${auth_key}')
|
||||
This unset default password setting
|
||||
|
||||
more-secure: does some additional security agressive settings (may prevent things to run) (currently: '${more_secure}')
|
||||
|
||||
mirror: gentoo mirror for download (currently: '${mirror}')
|
||||
|
||||
tty: number of tty (6 max) (currently: '${tty}')
|
||||
|
||||
nettun: enable creation of /dev/net/tun (for private container VPN) (currently: '${nettun}')
|
||||
EOF
|
||||
exit 0
|
||||
}
|
||||
|
||||
#some overridable defaults
|
||||
set_default_arch
|
||||
|
||||
mirror="http://distfiles.gentoo.org"
|
||||
user="root"
|
||||
password="toor"
|
||||
tty=0
|
||||
options=$(getopt -o hp:n:a:FcPv:t:S:u:w:sm: -l help,rootfs:,path:,name:,arch:,flush-cache,cache-only,private-portage,variant:,portage-dir:,tarball:,auth_key:,user:,autologin,password:,more-secure,mirror:,tty:,nettun -- "$@")
|
||||
|
||||
eval set -- "$options"
|
||||
|
||||
while true
|
||||
do
|
||||
case "$1" in
|
||||
-h|--help) usage $0 && exit 0;;
|
||||
--rootfs) rootfs=$2; shift 2;;
|
||||
-p|--path) path=$2; shift 2;;
|
||||
-n|--name) name=$2; shift 2;;
|
||||
-a|--arch) arch=$2; shift 2;;
|
||||
-F|--flush-cache) flush_cache=1; shift 1;;
|
||||
-c|--cache-only) cache_only=1; shitf 1;;
|
||||
-P|--private-portage) private_portage=1; shift 1;;
|
||||
-v|--variant) variant=$2; shift 2;;
|
||||
--portage-dir) portage_dir=$2; shift 2;;
|
||||
-t|--tarball) tarball=$2; shift 2;;
|
||||
-S|--auth-key) auth_key=$2; shift 2;;
|
||||
-u|--user) user=$2; shift 2;;
|
||||
-w|--password) forced_password=1; password=$2; shift 2;;
|
||||
-s|--more-secure) more_secure=1; shift 1;;
|
||||
-m|--mirror) mirror=$2; shift 2;;
|
||||
--nettun) nettun=1; shift 1;;
|
||||
--tty) [[ $2 -lt 6 ]] && tty=$2; shift 2;;
|
||||
--autologin) autologin=1; shift 1;;
|
||||
--) shift 1; break ;;
|
||||
*) break ;;
|
||||
esac
|
||||
done
|
||||
|
||||
cacheroot="@LOCALSTATEDIR@/cache/lxc/gentoo"
|
||||
portage_cache="${cacheroot}/portage.tbz"
|
||||
cachefs="${cacheroot}/rootfs-${arch}-${variant}"
|
||||
|
||||
alias wget="wget --timeout=8 --read-timeout=15 -c -t10 -nd"
|
||||
|
||||
do_all() {
|
||||
cache_setup
|
||||
if [ -z "${cache_only}" ]; then
|
||||
container_setup
|
||||
fi
|
||||
}
|
||||
|
||||
execute_exclusively "cache-${arch}-${variant}" 60 do_all
|
||||
Loading…
Reference in New Issue
Block a user