devstack_custom/tools/build_ramdisk.sh
2011-11-01 17:44:03 -05:00

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#!/bin/bash
# build_ramdisk.sh - Build RAM disk images
# exit on error to stop unexpected errors
set -o errexit
if [ ! "$#" -eq "1" ]; then
echo "$0 builds a gziped Ubuntu OpenStack install"
echo "usage: $0 dest"
exit 1
fi
# Clean up any resources that may be in use
cleanup() {
set +o errexit
# Mop up temporary files
if [ -n "$MNTDIR" -a -d "$MNTDIR" ]; then
umount $MNTDIR
rmdir $MNTDIR
fi
if [ -n "$DEV_FILE_TMP" -a -e "$DEV_FILE_TMP "]; then
rm -f $DEV_FILE_TMP
fi
if [ -n "$IMG_FILE_TMP" -a -e "$IMG_FILE_TMP" ]; then
rm -f $IMG_FILE_TMP
fi
# Release NBD devices
if [ -n "$NBD" ]; then
qemu-nbd -d $NBD
fi
# Kill ourselves to signal any calling process
trap 2; kill -2 $$
}
trap cleanup SIGHUP SIGINT SIGTERM
# Set up nbd
modprobe nbd max_part=63
# Echo commands
set -o xtrace
IMG_FILE=$1
# Keep track of the current directory
TOOLS_DIR=$(cd $(dirname "$0") && pwd)
TOP_DIR=`cd $TOOLS_DIR/..; pwd`
# Store cwd
CWD=`pwd`
cd $TOP_DIR
# Source params
source ./stackrc
CACHEDIR=${CACHEDIR:-/var/cache/devstack}
DEST=${DEST:-/opt/stack}
# Configure the root password of the vm to be the same as ``ADMIN_PASSWORD``
ROOT_PASSWORD=${ADMIN_PASSWORD:-password}
# Base image (natty by default)
DIST_NAME=${DIST_NAME:-natty}
# Param string to pass to stack.sh. Like "EC2_DMZ_HOST=192.168.1.1 MYSQL_USER=nova"
STACKSH_PARAMS=${STACKSH_PARAMS:-}
# Option to use the version of devstack on which we are currently working
USE_CURRENT_DEVSTACK=${USE_CURRENT_DEVSTACK:-1}
# clean install
if [ ! -r $CACHEDIR/$DIST_NAME-base.img ]; then
$TOOLS_DIR/get_uec_image.sh $DIST_NAME $CACHEDIR/$DIST_NAME-base.img
fi
# Finds the next available NBD device
# Exits script if error connecting or none free
# map_nbd image
# returns full nbd device path
function map_nbd {
for i in `seq 0 15`; do
if [ ! -e /sys/block/nbd$i/pid ]; then
NBD=/dev/nbd$i
# Connect to nbd and wait till it is ready
qemu-nbd -c $NBD $1
if ! timeout 60 sh -c "while ! [ -e ${NBD}p1 ]; do sleep 1; done"; then
echo "Couldn't connect $NBD"
exit 1
fi
break
fi
done
if [ -z "$NBD" ]; then
echo "No free NBD slots"
exit 1
fi
echo $NBD
}
# prime image with as many apt/pips as we can
DEV_FILE=$CACHEDIR/$DIST_NAME-dev.img
DEV_FILE_TMP=`mktemp $DEV_FILE.XXXXXX`
if [ ! -r $DEV_FILE ]; then
cp -p $CACHEDIR/$DIST_NAME-base.img $DEV_FILE_TMP
NBD=`map_nbd $DEV_FILE_TMP`
MNTDIR=`mktemp -d --tmpdir mntXXXXXXXX`
mount -t ext4 ${NBD}p1 $MNTDIR
cp -p /etc/resolv.conf $MNTDIR/etc/resolv.conf
chroot $MNTDIR apt-get install -y `cat files/apts/* | cut -d\# -f1 | egrep -v "(rabbitmq|libvirt-bin|mysql-server)"`
chroot $MNTDIR pip install `cat files/pips/*`
# Create a stack user that is a member of the libvirtd group so that stack
# is able to interact with libvirt.
chroot $MNTDIR groupadd libvirtd
chroot $MNTDIR useradd stack -s /bin/bash -d $DEST -G libvirtd
mkdir -p $MNTDIR/$DEST
chroot $MNTDIR chown stack $DEST
# a simple password - pass
echo stack:pass | chroot $MNTDIR chpasswd
echo root:$ROOT_PASSWORD | chroot $MNTDIR chpasswd
# and has sudo ability (in the future this should be limited to only what
# stack requires)
echo "stack ALL=(ALL) NOPASSWD: ALL" >> $MNTDIR/etc/sudoers
umount $MNTDIR
rmdir $MNTDIR
qemu-nbd -d $NBD
NBD=""
mv $DEV_FILE_TMP $DEV_FILE
fi
rm -f $DEV_FILE_TMP
# clone git repositories onto the system
# ======================================
IMG_FILE_TMP=`mktemp $IMG_FILE.XXXXXX`
if [ ! -r $IMG_FILE ]; then
NBD=`map_nbd $DEV_FILE`
# Pre-create the image file
# FIXME(dt): This should really get the partition size to
# pre-create the image file
dd if=/dev/zero of=$IMG_FILE_TMP bs=1 count=1 seek=$((2*1024*1024*1024))
# Create filesystem image for RAM disk
dd if=${NBD}p1 of=$IMG_FILE_TMP bs=1M
qemu-nbd -d $NBD
NBD=""
mv $IMG_FILE_TMP $IMG_FILE
fi
rm -f $IMG_FILE_TMP
MNTDIR=`mktemp -d --tmpdir mntXXXXXXXX`
mount -t ext4 -o loop $IMG_FILE $MNTDIR
cp -p /etc/resolv.conf $MNTDIR/etc/resolv.conf
# We need to install a non-virtual kernel and modules to boot from
if [ ! -r "`ls $MNTDIR/boot/vmlinuz-*-generic | head -1`" ]; then
chroot $MNTDIR apt-get install -y linux-generic
fi
# git clone only if directory doesn't exist already. Since ``DEST`` might not
# be owned by the installation user, we create the directory and change the
# ownership to the proper user.
function git_clone {
# clone new copy or fetch latest changes
CHECKOUT=${MNTDIR}$2
if [ ! -d $CHECKOUT ]; then
mkdir -p $CHECKOUT
git clone $1 $CHECKOUT
else
pushd $CHECKOUT
git fetch
popd
fi
# FIXME(ja): checkout specified version (should works for branches and tags)
pushd $CHECKOUT
# checkout the proper branch/tag
git checkout $3
# force our local version to be the same as the remote version
git reset --hard origin/$3
popd
# give ownership to the stack user
chroot $MNTDIR chown -R stack $2
}
git_clone $NOVA_REPO $DEST/nova $NOVA_BRANCH
git_clone $GLANCE_REPO $DEST/glance $GLANCE_BRANCH
git_clone $KEYSTONE_REPO $DEST/keystone $KEYSTONE_BRANCH
git_clone $NOVNC_REPO $DEST/novnc $NOVNC_BRANCH
git_clone $HORIZON_REPO $DEST/horizon $HORIZON_BRANCH
git_clone $NOVACLIENT_REPO $DEST/python-novaclient $NOVACLIENT_BRANCH
git_clone $OPENSTACKX_REPO $DEST/openstackx $OPENSTACKX_BRANCH
# Use this version of devstack
rm -rf $MNTDIR/$DEST/devstack
cp -pr $CWD $MNTDIR/$DEST/devstack
chroot $MNTDIR chown -R stack $DEST/devstack
# Configure host network for DHCP
mkdir -p $MNTDIR/etc/network
cat > $MNTDIR/etc/network/interfaces <<EOF
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
EOF
# Set hostname
echo "ramstack" >$MNTDIR/etc/hostname
echo "127.0.0.1 localhost ramstack" >$MNTDIR/etc/hosts
# Configure the runner
RUN_SH=$MNTDIR/$DEST/run.sh
cat > $RUN_SH <<EOF
#!/usr/bin/env bash
# Get IP range
set \`ip addr show dev eth0 | grep inet\`
PREFIX=\`echo \$2 | cut -d. -f1,2,3\`
export FLOATING_RANGE="\$PREFIX.224/27"
# Kill any existing screens
killall screen
# Run stack.sh
cd $DEST/devstack && \$STACKSH_PARAMS ./stack.sh > $DEST/run.sh.log
echo >> $DEST/run.sh.log
echo >> $DEST/run.sh.log
echo "All done! Time to start clicking." >> $DEST/run.sh.log
EOF
# Make the run.sh executable
chmod 755 $RUN_SH
chroot $MNTDIR chown stack $DEST/run.sh
umount $MNTDIR
rmdir $MNTDIR