X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=lbuild-initvm.sh;h=5f51503a183c19cb04be937b2bcfa6e59e56cb30;hb=b4dcf590f6c1aaaf3f4d508dfa207ed5fed6851e;hp=10f4235d07ff2933d97f4866425a0431e7642efd;hpb=1246592fb46c89a27f42f1986226af8f7b617ae7;p=build.git diff --git a/lbuild-initvm.sh b/lbuild-initvm.sh index 10f4235d..5f51503a 100755 --- a/lbuild-initvm.sh +++ b/lbuild-initvm.sh @@ -1,81 +1,41 @@ #!/bin/bash # -*-shell-*- +# close stdin, as with ubuntu and debian VMs this script tends to hang and wait for input .. +0<&- + #shopt -s huponexit COMMAND=$(basename $0) DIRNAME=$(dirname $0) BUILD_DIR=$(pwd) -# pkgs parsing utilities -PATH=$(dirname $0):$PATH export PATH +# pkgs parsing utilities + lbuild-bridge.sh +export PATH=$(dirname $0):$PATH + +# old guests have e.g. mount in /bin but this is no longer part of +# the standard PATH in recent hosts after usrmove, so let's keep it simple +export PATH=$PATH:/bin:/sbin + . build.common DEFAULT_FCDISTRO=f20 DEFAULT_PLDISTRO=lxc DEFAULT_PERSONALITY=linux64 - -COMMAND_LBUILD="lbuild-initvm.sh" -COMMAND_LTEST="ltest-initvm.sh" +DEFAULT_MEMORY=512 ########## -# when creating build boxes we use private NAT'ed addresses for the VMs -# as per virbr0 that is taken care of by libvirt at startup -PRIVATE_PREFIX="192.168.122." -PRIVATE_GATEWAY="192.168.122.1" -# beware that changing this would break the logic of random_private_byte... -PRIVATE_MASKLEN=24 - -# we just try randomly in that range until a free IP address shows up -PRIVATE_ATTEMPTS=20 - # constant -INTERFACE_BRIDGE=br0 +PUBLIC_BRIDGE=br0 # the network interface name as seen from the container -VIFNAME=eth0 +VIF_GUEST=eth0 -############################## -## stolen from tests/system/template-qemu/qemu-bridge-init -# use /proc/net/dev instead of a hard-wired list -function gather_interfaces () { - python <& /dev/null -} - -function random_private_byte () { - for attempt in $(seq $PRIVATE_ATTEMPTS); do - byte=$(($RANDOM % 256)) - if [ "$byte" == 0 -o "$byte" == 1 ] ; then continue; fi - ip=${PRIVATE_PREFIX}${byte} - ip_is_busy $ip || { echo $byte; return; } - done - echo "Cannot seem to find a free IP address in range ${PRIVATE_PREFIX}.xx/24 after $PRIVATE_ATTEMPTS attempts - exiting" - exit 1 -} +########## +FEDORA_PREINSTALLED="yum initscripts passwd rsyslog vim-minimal dhclient chkconfig rootfiles policycoreutils openssh-server openssh-clients" +DEBIAN_PREINSTALLED="openssh-server openssh-client" -########## networking -- ctd +########## networking utilities function gethostbyname () { hostname=$1 python -c "import socket; print socket.gethostbyname('"$hostname"')" 2> /dev/null @@ -103,206 +63,75 @@ print ".".join([ str(256-2**(8-i)) for i in result ]) EOF } -#################### bridge initialization -function create_bridge_if_needed() { - - # turn on verbosity - set -x - - # already created ? - we're done - ip addr show $INTERFACE_BRIDGE >& /dev/null && { - echo "Bridge already set up - skipping create_bridge_if_needed" - return 0 - } - - # find out the physical interface to bridge onto - if_lan=$(discover_interface) - - ip addr show $if_lan &>/dev/null || { - echo "Cannot use interface $if_lan - exiting" - exit 1 - } - - #################### bride initialization - check_yum_installed bridge-utils - - echo "========== $COMMAND: entering create_bridge - beg" - hostname - uname -a - ip addr show - ip route - echo "========== $COMMAND: entering create_bridge - end" - - # disable netfilter calls for bridge interface (they cause panick on 2.6.35 anyway) - # - # another option would be to accept the all forward packages for - # bridged interface like: -A FORWARD -m physdev --physdev-is-bridged -j ACCEPT - sysctl net.bridge.bridge-nf-call-iptables=0 - sysctl net.bridge.bridge-nf-call-ip6tables=0 - sysctl net.bridge.bridge-nf-call-arptables=0 - - - #Getting host IP/masklen - address=$(ip addr show $if_lan | grep -v inet6 | grep inet | head --lines=1 | awk '{print $2;}') - [ -z "$address" ] && { echo "ERROR: Could not determine IP address for $if_lan" ; exit 1 ; } - - broadcast=$(ip addr show $if_lan | grep -v inet6 | grep inet | head --lines=1 | awk '{print $4;}') - [ -z "$broadcast" ] && echo "WARNING: Could not determine broadcast address for $if_lan" - - gateway=$(ip route show | grep default | awk '{print $3;}') - [ -z "$gateway" ] && echo "WARNING: Could not determine gateway IP" - - - # creating the bridge - echo "Creating bridge INTERFACE_BRIDGE=$INTERFACE_BRIDGE" - brctl addbr $INTERFACE_BRIDGE - brctl addif $INTERFACE_BRIDGE $if_lan - echo "Activating promiscuous mode if_lan=$if_lan" - ip link set $if_lan up promisc on - sleep 2 - # rely on dhcp to re assign IP.. - echo "Starting dhclient on $INTERFACE_BRIDGE" - dhclient $INTERFACE_BRIDGE - sleep 1 - - #Reconfigure the routing table - echo "Configuring gateway=$gateway" - ip route add default via $gateway dev $INTERFACE_BRIDGE - ip route del default via $gateway dev $if_lan - # at this point we have an extra route like e.g. - ## ip route show - #default via 138.96.112.250 dev br0 - #138.96.112.0/21 dev em1 proto kernel scope link src 138.96.112.57 - #138.96.112.0/21 dev br0 proto kernel scope link src 138.96.112.57 - #192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 - route_dest=$(ip route show | grep -v default | grep "dev $INTERFACE_BRIDGE" | awk '{print $1;}') - ip route del $route_dest dev $if_lan - - echo "========== $COMMAND: exiting create_bridge - beg" - ip addr show - ip route show - echo "========== $COMMAND: exiting create_bridge - end" - - # for safety - sleep 3 - return 0 - +############################## +# return yum or debootstrap +function package_method () { + fcdistro=$1; shift + case $fcdistro in + f[0-9]*|centos[0-9]*|sl[0-9]*) echo yum ;; + squeeze|wheezy|jessie|oneiric|precise|quantal|raring|saucy) echo debootstrap ;; + *) echo Unknown distro $fcdistro ;; + esac } - -############################## -function check_yum_installed () { - package=$1; shift - rpm -q $package >& /dev/null || yum -y install $package +# return arch from debian distro and personality +function canonical_arch () { + personality=$1; shift + fcdistro=$1; shift + case $(package_method $fcdistro) in + yum) + case $personality in *32) echo i386 ;; *64) echo x86_64 ;; *) echo Unknown-arch-1 ;; esac ;; + debootstrap) + case $personality in *32) echo i386 ;; *64) echo amd64 ;; *) echo Unknown-arch-2 ;; esac ;; + *) + echo Unknown-arch-3 ;; + esac } -function check_yumgroup_installed () { - group="$1"; shift - yum grouplist "$group" | grep -q Installed || { yum -y groupinstall "$group" ; } +# the new test framework creates /timestamp in /vservers/ *before* populating it +function almost_empty () { + dir="$1"; shift ; + # non existing is fine + [ ! -d $dir ] && return 0; + # need to have at most one file + count=$(cd $dir; ls | wc -l); [ $count -le 1 ]; } ############################## +function fedora_install() { + set -x + set -e -function configure_fedora() { - - # disable selinux in fedora - mkdir -p $rootfs_path/selinux - echo 0 > $rootfs_path/selinux/enforce - - # configure the network - - cat < ${rootfs_path}/etc/sysconfig/network-scripts/ifcfg-$VIFNAME -DEVICE=$VIFNAME -BOOTPROTO=static -ONBOOT=yes -HOSTNAME=$HOSTNAME -IPADDR=$IP -NETMASK=$NETMASK -GATEWAY=$GATEWAY -NM_CONTROLLED=no -TYPE=Ethernet -MTU=1500 -EOF - - # set the hostname - case "$fcdistro" in - f18|f2?) - cat < ${rootfs_path}/etc/hostname -$HOSTNAME -EOF - echo ;; - *) - cat < ${rootfs_path}/etc/sysconfig/network -NETWORKING=yes -HOSTNAME=$HOSTNAME -EOF - # set minimal hosts - cat < $rootfs_path/etc/hosts -127.0.0.1 localhost $HOSTNAME -EOF - echo ;; - esac - - dev_path="${rootfs_path}/dev" - rm -rf $dev_path - mkdir -p $dev_path - mknod -m 666 ${dev_path}/null c 1 3 - mknod -m 666 ${dev_path}/zero c 1 5 - mknod -m 666 ${dev_path}/random c 1 8 - mknod -m 666 ${dev_path}/urandom c 1 9 - mkdir -m 755 ${dev_path}/pts - mkdir -m 1777 ${dev_path}/shm - mknod -m 666 ${dev_path}/tty c 5 0 - mknod -m 666 ${dev_path}/tty0 c 4 0 - mknod -m 666 ${dev_path}/tty1 c 4 1 - mknod -m 666 ${dev_path}/tty2 c 4 2 - mknod -m 666 ${dev_path}/tty3 c 4 3 - mknod -m 666 ${dev_path}/tty4 c 4 4 - mknod -m 600 ${dev_path}/console c 5 1 - mknod -m 666 ${dev_path}/full c 1 7 - mknod -m 600 ${dev_path}/initctl p - mknod -m 666 ${dev_path}/ptmx c 5 2 - - #echo "setting root passwd to $root_password" - #echo "root:$root_password" | chroot $rootfs_path chpasswd + cache=/var/cache/lxc/fedora/$arch/$release + + mkdir -p /var/lock/subsys/ + ( + flock -n -x 200 || { echo "Cache repository is busy." ; return 1 ; } - return 0 -} + if [ ! -e "$cache/rootfs" ]; then + echo "Getting cache download in $cache/rootfs ... " + fedora_download || { echo "Failed to download 'fedora base'"; return 1; } + else + echo "Updating cache $cache/rootfs ..." + if ! yum --installroot $cache/rootfs -y --nogpgcheck update ; then + echo "Failed to update 'fedora base', continuing with last known good cache" + else + echo "Update finished" + fi + fi -function configure_fedora_init() { + echo "Copy $cache/rootfs to $lxc_root ... " + rsync -a $cache/rootfs/ $lxc_root/ + + return 0 - sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.sysinit - sed -i 's|.sbin.start_udev||' ${rootfs_path}/etc/rc.d/rc.sysinit - # don't mount devpts, for pete's sake - sed -i 's/^.*dev.pts.*$/#\0/' ${rootfs_path}/etc/rc.sysinit - sed -i 's/^.*dev.pts.*$/#\0/' ${rootfs_path}/etc/rc.d/rc.sysinit - chroot ${rootfs_path} /sbin/chkconfig udev-post off - chroot ${rootfs_path} /sbin/chkconfig network on -} + ) 200>/var/lock/subsys/lxc -# this code of course is for guests that do run on systemd -function configure_fedora_systemd() { - # so ignore if we can't find /etc/systemd at all - [ -d ${rootfs_path}/etc/systemd ] || return 0 - # otherwise let's proceed - ln -sf /lib/systemd/system/multi-user.target ${rootfs_path}/etc/systemd/system/default.target - touch ${rootfs_path}/etc/fstab - ln -sf /dev/null ${rootfs_path}/etc/systemd/system/udev.service -# Thierry - Feb 2013 -# this was intended for f16 initially, in order to enable getty that otherwise would not start -# having a getty running is helpful only if ssh won't start though, and we see a correlation between -# VM's that refuse to lxc-stop and VM's that run crazy getty's -# so, turning getty off for now instead -# #dependency on a device unit fails it specially that we disabled udev -# sed -i 's/After=dev-%i.device/After=/' ${rootfs_path}/lib/systemd/system/getty\@.service - ln -sf /dev/null ${rootfs_path}/etc/systemd/system/"getty@.service" - rm -f ${rootfs_path}/etc/systemd/system/getty.target.wants/*service || : -# can't seem to handle this one with systemctl - chroot ${rootfs_path} /sbin/chkconfig network on + return $? } -function download_fedora() { -set -x +function fedora_download() { + set -x # check the mini fedora was not already downloaded INSTALL_ROOT=$cache/partial echo $INSTALL_ROOT @@ -310,11 +139,7 @@ set -x # download a mini fedora into a cache echo "Downloading fedora minimal ..." - mkdir -p $INSTALL_ROOT - if [ $? -ne 0 ]; then - echo "Failed to create '$INSTALL_ROOT' directory" - return 1 - fi + mkdir -p $INSTALL_ROOT || { echo "Failed to create '$INSTALL_ROOT' directory" ; return 1; } mkdir -p $INSTALL_ROOT/etc/yum.repos.d mkdir -p $INSTALL_ROOT/dev @@ -326,8 +151,7 @@ set -x cp /etc/yum.repos.d/fedora* $INSTALL_ROOT/etc/yum.repos.d/ # append fedora repo files with desired $release and $basearch - for f in $INSTALL_ROOT/etc/yum.repos.d/* - do + for f in $INSTALL_ROOT/etc/yum.repos.d/* ; do sed -i "s/\$basearch/$arch/g; s/\$releasever/$release/g;" $f done @@ -363,14 +187,8 @@ set -x # this patch undone, like we have in place on our f14 boxes (our f14 boxes need a f18-like rpm) YUM="yum --installroot=$INSTALL_ROOT --nogpgcheck -y" - PKG_LIST="yum initscripts passwd rsyslog vim-minimal dhclient chkconfig rootfiles policycoreutils openssh-server openssh-clients" - echo "$YUM install $PKG_LIST" - $YUM install $PKG_LIST - - if [ $? -ne 0 ]; then - echo "Failed to download the rootfs, aborting." - return 1 - fi + echo "$YUM install $FEDORA_PREINSTALLED" + $YUM install $FEDORA_PREINSTALLED || { echo "Failed to download rootfs, aborting." ; return 1; } mv "$INSTALL_ROOT" "$cache/rootfs" echo "Download complete." @@ -378,69 +196,106 @@ set -x return 0 } +############################## +function fedora_configure() { -function copy_fedora() { -set -x - # make a local copy of the minifedora - echo -n "Copying rootfs to $rootfs_path ..." - mkdir -p $rootfs_path - rsync -a $cache/rootfs/ $rootfs_path/ - return 0 -} - - -function update_fedora() { -set -x - YUM="yum --installroot $cache/rootfs -y --nogpgcheck" - $YUM update -} + set -x + set -e + # disable selinux in fedora + mkdir -p $lxc_root/selinux + echo 0 > $lxc_root/selinux/enforce -function install_fedora() { - set -x + # set the hostname + case "$fcdistro" in + f18|f2?) + cat < ${lxc_root}/etc/hostname +$GUEST_HOSTNAME +EOF + echo ;; + *) + cat < ${lxc_root}/etc/sysconfig/network +NETWORKING=yes +HOSTNAME=$GUEST_HOSTNAME +EOF + # set minimal hosts + cat < $lxc_root/etc/hosts +127.0.0.1 localhost $GUEST_HOSTNAME +EOF + echo ;; + esac - mkdir -p /var/lock/subsys/ - ( - flock -n -x 200 - if [ $? -ne 0 ]; then - echo "Cache repository is busy." - return 1 - fi + dev_path="${lxc_root}/dev" + rm -rf $dev_path + mkdir -p $dev_path + mknod -m 666 ${dev_path}/null c 1 3 + mknod -m 666 ${dev_path}/zero c 1 5 + mknod -m 666 ${dev_path}/random c 1 8 + mknod -m 666 ${dev_path}/urandom c 1 9 + mkdir -m 755 ${dev_path}/pts + mkdir -m 1777 ${dev_path}/shm + mknod -m 666 ${dev_path}/tty c 5 0 + mknod -m 666 ${dev_path}/tty0 c 4 0 + mknod -m 666 ${dev_path}/tty1 c 4 1 + mknod -m 666 ${dev_path}/tty2 c 4 2 + mknod -m 666 ${dev_path}/tty3 c 4 3 + mknod -m 666 ${dev_path}/tty4 c 4 4 + mknod -m 600 ${dev_path}/console c 5 1 + mknod -m 666 ${dev_path}/full c 1 7 + mknod -m 600 ${dev_path}/initctl p + mknod -m 666 ${dev_path}/ptmx c 5 2 - echo "Checking cache download in $cache/rootfs ... " - if [ ! -e "$cache/rootfs" ]; then - download_fedora - if [ $? -ne 0 ]; then - echo "Failed to download 'fedora base'" - return 1 - fi - else - echo "Cache found. Updating..." - update_fedora - if [ $? -ne 0 ]; then - echo "Failed to update 'fedora base', continuing with last known good cache" - else - echo "Update finished" - fi - fi + if [ "$(echo $fcdistro | cut -d"f" -f2)" -le "14" ]; then + fedora_configure_init + else + fedora_configure_systemd + fi - echo "Copy $cache/rootfs to $rootfs_path ... " - copy_fedora - if [ $? -ne 0 ]; then - echo "Failed to copy rootfs" - return 1 - fi + guest_ifcfg=${lxc_root}/etc/sysconfig/network-scripts/ifcfg-$VIF_GUEST + ( [ -n "$BUILD_MODE" ] && write_guest_ifcfg_build || write_guest_ifcfg_test ) > $guest_ifcfg - return 0 + [ -z "$IMAGE" ] && fedora_configure_yum $lxc $fcdistro $pldistro - ) 200>/var/lock/subsys/lxc + return 0 +} - return $? +function fedora_configure_init() { + set -e + set -x + sed -i 's|.sbin.start_udev||' ${lxc_root}/etc/rc.sysinit + sed -i 's|.sbin.start_udev||' ${lxc_root}/etc/rc.d/rc.sysinit + # don't mount devpts, for pete's sake + sed -i 's/^.*dev.pts.*$/#\0/' ${lxc_root}/etc/rc.sysinit + sed -i 's/^.*dev.pts.*$/#\0/' ${lxc_root}/etc/rc.d/rc.sysinit + chroot ${lxc_root} chkconfig udev-post off + chroot ${lxc_root} chkconfig network on } +# this code of course is for guests that do run on systemd +function fedora_configure_systemd() { + set -e + set -x + # so ignore if we can't find /etc/systemd at all + [ -d ${lxc_root}/etc/systemd ] || return 0 + # otherwise let's proceed + ln -sf /lib/systemd/system/multi-user.target ${lxc_root}/etc/systemd/system/default.target + touch ${lxc_root}/etc/fstab + ln -sf /dev/null ${lxc_root}/etc/systemd/system/udev.service +# Thierry - Feb 2013 +# this was intended for f16 initially, in order to enable getty that otherwise would not start +# having a getty running is helpful only if ssh won't start though, and we see a correlation between +# VM's that refuse to lxc-stop and VM's that run crazy getty's +# so, turning getty off for now instead +# #dependency on a device unit fails it specially that we disabled udev +# sed -i 's/After=dev-%i.device/After=/' ${lxc_root}/lib/systemd/system/getty\@.service + ln -sf /dev/null ${lxc_root}/etc/systemd/system/"getty@.service" + rm -f ${lxc_root}/etc/systemd/system/getty.target.wants/*service || : +# can't seem to handle this one with systemctl + chroot ${lxc_root} chkconfig network on +} -# overwrite lxc's internal yum config -function configure_yum_in_lxc () { +# overwrite container yum config +function fedora_configure_yum () { set -x set -e trap failure ERR INT @@ -449,10 +304,13 @@ function configure_yum_in_lxc () { fcdistro=$1; shift pldistro=$1; shift + # rpm --rebuilddb + chroot $lxc_root rpm --rebuilddb + echo "Initializing yum.repos.d in $lxc" - rm -f $rootfs_path/etc/yum.repos.d/* + rm -f $lxc_root/etc/yum.repos.d/* - cat > $rootfs_path/etc/yum.repos.d/building.repo < $lxc_root/etc/yum.repos.d/building.repo < $rootfs_path/etc/yum.repos.d/myplc.repo < $lxc_root/etc/yum.repos.d/myplc.repo < ${lxc_root}/etc/hostname +$GUEST_HOSTNAME +EOF + } -# the new test framework creates /timestamp in /vservers/ *before* populating it -function almost_empty () { - dir="$1"; shift ; - # non existing is fine - [ ! -d $dir ] && return 0; - # need to have at most one file - count=$(cd $dir; ls | wc -l); [ $count -le 1 ]; +function debian_configure () { + guest_interfaces=${lxc_root}/etc/network/interfaces + ( [ -n "$BUILD_MODE" ] && write_guest_interfaces_build || write_guest_interfaces_test ) > $guest_interfaces +} + +function write_guest_interfaces_build () { + cat < $rootfs_path/etc/hosts + [ -f $lxc_root/etc/hosts ] || echo "127.0.0.1 localhost localhost.localdomain" > $lxc_root/etc/hosts # grant ssh access from host to guest - mkdir $rootfs_path/root/.ssh - cat /root/.ssh/id_rsa.pub >> $rootfs_path/root/.ssh/authorized_keys + mkdir -p $lxc_root/root/.ssh + cat /root/.ssh/id_rsa.pub >> $lxc_root/root/.ssh/authorized_keys + chmod 700 $lxc_root/root/.ssh + chmod 600 $lxc_root/root/.ssh/authorized_keys + + # don't keep the input xml, this can be retrieved at all times with virsh dumpxml + config_xml=/tmp/$lxc.xml + ( [ -n "$BUILD_MODE" ] && write_lxc_xml_build $lxc || write_lxc_xml_test $lxc ) > $config_xml - # copy libvirt xml template - veth_pair="i$(echo $HOSTNAME | cut -d. -f1)" - tmpl_name="$lxc.xml" - cat > $config_path/$tmpl_name< $lxc - 524288 + $MEMORY exe /sbin/init @@ -594,32 +485,83 @@ function setup_lxc() { /usr/libexec/libvirt_lxc - + - - + + host-bridge - + EOF +} - # define lxc container for libvirt - virsh -c lxc:// define $config_path/$tmpl_name - - # rpm --rebuilddb - chroot $rootfs_path /bin/rpm --rebuilddb +function write_lxc_xml_build () { + lxc=$1; shift + cat < + $lxc + $MEMORY + + exe + /sbin/init + + + + + 1 + + destroy + restart + destroy + + /usr/libexec/libvirt_lxc + + + + + + + + + + +EOF +} - configure_yum_in_lxc $lxc $fcdistro $pldistro +# this one is dhcp-based +function write_guest_ifcfg_build () { + cat < $rootfs_path/init-lxc.rpms + chroot $lxc_root rpm -aq > $lxc_root/init-lxc.rpms ;; debootstrap) - chroot $rootfs_path /usr/bin/apt-get update - for package in $packages ; do - chroot $rootfs_path /usr/bin/apt-get install -y $package + # for ubuntu + if grep -iq ubuntu /vservers/$lxc/etc/lsb-release 2> /dev/null; then + # on ubuntu, at this point we end up with a single feed in /etc/apt/sources.list + # we need at least to add the 'universe' feed for python-rpm + ( cd /vservers/$lxc/etc/apt ; head -1 sources.list | sed -e s,main,universe, > sources.list.d/universe.list ) + # also adding a link to updates sounds about right + ( cd /vservers/$lxc/etc/apt ; head -1 sources.list | sed -e 's, main,-updates main,' > sources.list.d/updates.list ) + # tell apt about the changes + chroot /vservers/$lxc apt-get update + fi + for package in $packages ; do + # container not started yet + #virsh -c lxc:/// lxc-enter-namespace $lxc /bin/bash -c "apt-get install -y $package" || : + chroot $lxc_root apt-get install -y $package || : done ### xxx todo install groups with apt.. ;; @@ -677,14 +630,19 @@ function post_install () { personality=$1; shift if [ -n "$BUILD_MODE" ] ; then post_install_build $lxc $personality - start_lxc $lxc + virsh -c lxc:/// start $lxc + # manually run dhclient in guest - somehow this network won't start on its own + virsh -c lxc:/// lxc-enter-namespace $lxc /bin/bash -c "dhclient $VIF_GUEST" else post_install_myplc $lxc $personality - start_lxc $lxc + virsh -c lxc:/// start $lxc +# it sounds like we don't need ssh per se any more +# it still makes sense to wait for network readiness though +# some day maybe... wait_for_ssh $lxc fi # setup localtime from the host - cp /etc/localtime $rootfs_path/etc/localtime + cp /etc/localtime $lxc_root/etc/localtime } function post_install_build () { @@ -698,51 +656,13 @@ function post_install_build () { ### From myplc-devel-native.spec # be careful to backslash $ in this, otherwise it's the root context that's going to do the evaluation - cat << EOF | chroot $rootfs_path /bin/bash -x - # set up /dev/loop* in lxc - for i in \$(seq 0 255) ; do - /bin/mknod -m 640 /dev/loop\$i b 7 \$i - done - - # create symlink for /dev/fd - [ ! -e "/dev/fd" ] && /bin/ln -s /proc/self/fd /dev/fd - - # modify /etc/rpm/macros to not use /sbin/new-kernel-pkg - /bin/sed -i 's,/sbin/new-kernel-pkg:,,' /etc/rpm/macros - if [ -h "/sbin/new-kernel-pkg" ] ; then - filename=\$(/bin/readlink -f /sbin/new-kernel-pkg) - if [ "\$filename" == "/sbin/true" ] ; then - /bin/echo "WARNING: /sbin/new-kernel-pkg symlinked to /sbin/true" - /bin/echo "\tmost likely /etc/rpm/macros has /sbin/new-kernel-pkg declared in _netsharedpath." - /bin/echo "\tPlease remove /sbin/new-kernel-pkg from _netsharedpath and reintall mkinitrd." - exit 1 - fi - fi + cat << EOF | chroot $lxc_root bash -x # customize root's prompt /bin/cat << PROFILE > /root/.profile export PS1="[$lxc] \\w # " PROFILE - uid=2000 - gid=2000 - - # add a "build" user to the system - builduser=\$(grep "^build:" /etc/passwd | wc -l) - if [ \$builduser -eq 0 ] ; then - groupadd -o -g \$gid build; - useradd -o -c 'Automated Build' -u \$uid -g \$gid -n -M -s /bin/bash build; - fi - -# Allow build user to build certain RPMs as root - if [ -f /etc/sudoers ] ; then - buildsudo=\$(grep "^build.*ALL=(ALL).*NOPASSWD:.*ALL" /etc/sudoers | wc -l) - if [ \$buildsudo -eq 0 ] ; then - echo "build ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers - fi - sed -i 's,^Defaults.*requiretty,#Defaults requiretty,' /etc/sudoers - fi -# EOF } @@ -756,20 +676,14 @@ function post_install_myplc () { personality=$1; shift # be careful to backslash $ in this, otherwise it's the root context that's going to do the evaluation - cat << EOF | chroot $rootfs_path /bin/bash -x + cat << EOF | chroot $lxc_root bash -x # create /etc/sysconfig/network if missing [ -f /etc/sysconfig/network ] || /bin/echo NETWORKING=yes > /etc/sysconfig/network - # create symlink for /dev/fd - [ ! -e "/dev/fd" ] && /bin/ln -s /proc/self/fd /dev/fd - # turn off regular crond, as plc invokes plc_crond /sbin/chkconfig crond off - # take care of loginuid in /etc/pam.d - /bin/sed -i "s,#*\(.*loginuid.*\),#\1," /etc/pam.d/* - # customize root's prompt /bin/cat << PROFILE > /root/.profile export PS1="[$lxc] \\w # " @@ -778,19 +692,6 @@ PROFILE EOF } -function start_lxc() { - - set -x - set -e - #trap failure ERR INT - - lxc=$1; shift - - virsh -c lxc:// start $lxc - - return 0 -} - function wait_for_ssh () { set -x set -e @@ -798,17 +699,17 @@ function wait_for_ssh () { lxc=$1; shift - echo $IP is up, waiting for ssh... + echo network in guest is up, waiting for ssh... - #wait max 5 min for sshd to start + #wait max 2 min for sshd to start ssh_up="" - stop_time=$(($(date +%s) + 300)) current_time=$(date +%s) + stop_time=$(($current_time + 120)) counter=1 while [ "$current_time" -lt "$stop_time" ] ; do echo "$counter-th attempt to reach sshd in container $lxc ..." - ssh -o "StrictHostKeyChecking no" $IP 'uname -i' && { ssh_up=true; echo "SSHD in container $lxc is UP"; break ; } || : + ssh -o "StrictHostKeyChecking no" $GUEST_IP 'uname -i' && { ssh_up=true; echo "SSHD in container $lxc is UP"; break ; } || : sleep 10 current_time=$(($current_time + 10)) counter=$(($counter+1)) @@ -827,18 +728,23 @@ function failure () { function usage () { set +x - echo "Usage: $COMMAND_LBUILD [options] lxc-name" - echo "Usage: $COMMAND_LTEST [options] lxc-name" + echo "Usage: $COMMAND [options] lxc-name (aka build mode)" + echo "Usage: $COMMAND -n hostname [options] lxc-name (aka test mode)" echo "Description:" - echo " This command creates a fresh lxc instance, for building, or running a test myplc" + echo " This command creates a fresh lxc instance, for building, or running a test myplc" + echo "In its first form, spawned VM gets a private IP bridged with virbr0 over dhcp/nat" + echo "With the second form, spawned VM gets a public IP bridged on public bridge br0" + echo "" echo "Supported options" + echo " -n hostname - the hostname to use in container" echo " -f fcdistro - for creating the root filesystem - defaults to $DEFAULT_FCDISTRO" - echo " -d pldistro - defaults to $DEFAULT_PLDISTRO" + echo " -d pldistro - defaults to $DEFAULT_PLDISTRO - current support for fedoras debians ubuntus" echo " -p personality - defaults to $DEFAULT_PERSONALITY" - echo " -n hostname - the hostname to use in container - required with $COMMAND_LTEST" - echo " -r repo-url - used to populate yum.repos.d - required with $COMMAND_LTEST" - echo " -P pkgs_file - defines the set of extra pacakges" - echo " by default we use vtest.pkgs or devel.pkgs according to $COMMAND" + echo " -r repo-url - used to populate yum.repos.d - required in test mode" + echo " -P pkgs_file - defines a set of extra packages to install in guest" + echo " by default we use devel.pkgs (build mode) or runtime.pkgs (test mode)" + echo " -i image - the location of the rootfs" + echo " -m memory - the amount of allocated memory in MB - defaults to $DEFAULT_MEMORY MB" echo " -v be verbose" exit 1 } @@ -854,31 +760,16 @@ function main () { exit 1 fi - case "$COMMAND" in - $COMMAND_LBUILD) - BUILD_MODE=true ;; - $COMMAND_LTEST) - TEST_MODE=true;; - *) - usage ;; - esac - - echo 'build mode=' $BUILD_MODE 'test mode=' $TEST_MODE - - # the set of preinstalled packages - depends on vbuild or vtest - if [ -n "$VBUILD_MODE" ] ; then - PREINSTALLED=devel.pkgs - else - PREINSTALLED=vtest.pkgs - fi - while getopts "f:d:p:n:r:P:v" opt ; do + while getopts "n:f:d:p:r:P:i:m:v" opt ; do case $opt in + n) GUEST_HOSTNAME=$OPTARG;; f) fcdistro=$OPTARG;; d) pldistro=$OPTARG;; p) personality=$OPTARG;; - n) HOSTNAME=$OPTARG;; r) REPO_URL=$OPTARG;; P) PREINSTALLED=$OPTARG;; + i) IMAGE=$OPTARG;; + m) MEMORY=$OPTARG;; v) VERBOSE=true; set -x;; *) usage ;; esac @@ -889,19 +780,59 @@ function main () { # parse fixed arguments [[ -z "$@" ]] && usage lxc=$1 ; shift + lxc_root=/vservers/$lxc + + # rainchecks + almost_empty $lxc_root || \ + { echo "container $lxc already exists in $lxc_root - exiting" ; exit 1 ; } + virsh -c lxc:/// domuuid $lxc >& /dev/null && \ + { echo "container $lxc already exists in libvirt - exiting" ; exit 1 ; } + mkdir -p $lxc_root + + # if IMAGE, copy the provided rootfs to lxc_root + if [ -n "$IMAGE" ] ; then + [ ! -d "$IMAGE" ] && \ + { echo "$IMAGE rootfs folder does not exist - exiting" ; exit 1 ; } + rsync -a $IMAGE/ $lxc_root/ + fi + # check we've exhausted the arguments [[ -n "$@" ]] && usage + # BUILD_MODE is true unless we specified a hostname + [ -n "$GUEST_HOSTNAME" ] || BUILD_MODE=true + + # set default values [ -z "$fcdistro" ] && fcdistro=$DEFAULT_FCDISTRO [ -z "$pldistro" ] && pldistro=$DEFAULT_PLDISTRO [ -z "$personality" ] && personality=$DEFAULT_PERSONALITY + [ -z "$MEMORY" ] && MEMORY=$DEFAULT_MEMORY + + # set memory in KB + MEMORY=$(($MEMORY * 1024)) + # the set of preinstalled packages - depends on mode + if [ -z "$PREINSTALLED"] ; then + if [ -n "$BUILD_MODE" ] ; then + PREINSTALLED=devel.pkgs + else + PREINSTALLED=runtime.pkgs + fi + fi + if [ -n "$BUILD_MODE" ] ; then - [ -z "$HOSTNAME" ] && HOSTNAME=$lxc + # we can now set GUEST_HOSTNAME safely + [ -z "$GUEST_HOSTNAME" ] && GUEST_HOSTNAME=$(echo $lxc | sed -e 's,\.,-,g') else - [[ -z "$HOSTNAME" ]] && usage - [[ -z "$REPO_URL" ]] && echo "WARNING -- setting up a yum repo is recommended" + # as this command can be used in other contexts, not specifying + # a repo is considered a warning + # use -r none to get rid of this warning + if [ "$REPO_URL" == "none" ] ; then + REPO_URL="" + elif [ -z "$REPO_URL" ] ; then + echo "WARNING -- setting up a yum repo is recommended" + fi fi ########## @@ -917,59 +848,31 @@ function main () { echo "Unknown personality: $personality" fi - # need lxc installed before we can run lxc-ls - # need bridge installed - create_bridge_if_needed + # compute networking details for the test mode + # (build mode relies entirely on dhcp on the private subnet) + if [ -z "$BUILD_MODE" ] ; then - if [ -n "$BUILD_MODE" ] ; then + #create_bridge_if_needed $PUBLIC_BRIDGE + lbuild-bridge.sh $PUBLIC_BRIDGE - # Bridge IP affectation - byte=$(random_private_byte) - IP=${PRIVATE_PREFIX}$byte - NETMASK=$(masklen_to_netmask $PRIVATE_MASKLEN) - GATEWAY=$PRIVATE_GATEWAY - - lxc_network_type=veth - lxc_network_link=virbr0 - veth_pair="veth$byte" - echo "the IP address of container $lxc is $IP " - else - [[ -z "HOSTNAME" ]] && usage - - IP=$(gethostbyname $HOSTNAME) + GUEST_IP=$(gethostbyname $GUEST_HOSTNAME) # use same NETMASK as bridge interface br0 - MASKLEN=$(ip addr show $INTERFACE_BRIDGE | grep -v inet6 | grep inet | awk '{print $2;}' | cut -d/ -f2) - - NETMASK=$(masklen_to_netmask $MASKLEN) - GATEWAY=$(ip route show | grep default | awk '{print $3}') - lxc_network_type=veth - lxc_network_link=$INTERFACE_BRIDGE - veth_pair="i$(echo $HOSTNAME | cut -d. -f1)" - + masklen=$(ip addr show $PUBLIC_BRIDGE | grep -v inet6 | grep inet | awk '{print $2;}' | cut -d/ -f2) + NETMASK=$(masklen_to_netmask $masklen) + GATEWAY=$(ip route show | grep default | awk '{print $3}' | head -1) + VIF_HOST="i$(echo $GUEST_HOSTNAME | cut -d. -f1)" fi - path=/vservers - [ ! -d $path ] && mkdir $path - rootfs_path=$path/$lxc/rootfs - config_path=$path/$lxc - cache_base=/var/cache/lxc/fedora/$arch - cache=$cache_base/$release - root_password=root - - # check whether the rootfs directory is created to know if the container exists - # bacause /var/lib/lxc/$lxc is already created while putting $lxc.timestamp - [ -d $rootfs_path ] && \ - { echo "container $lxc already exists in filesystem - exiting" ; exit 1 ; } - virsh --connect lxc:// domuuid $lxc >& /dev/null && \ - { echo "container $lxc already exists in libvirt - exiting" ; exit 1 ; } - setup_lxc $lxc $fcdistro $pldistro $personality devel_or_vtest_tools $lxc $fcdistro $pldistro $personality + # container gets started here post_install $lxc $personality echo $COMMAND Done + + exit 0 } main "$@"