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165 lines
5.9 KiB
165 lines
5.9 KiB
#!/bin/bash
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# create-cumulus-vx-image.sh
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# HS-Fulda - sebastian.rieger@informatik.hs-fulda.de
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#
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# changelog:
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#
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# V0.2 added support to delete existing image with the same name and generating the default nova flavor
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# V0.3 checking whether it is safe to unmount the working directory
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# V0.3.1 added support for newer glance releases (e.g. kilo) used in VIRL 1.0.0
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# V0.4 fixed check for existing images, added support for Cumulus VX 3.x
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# V0.41 removed debug bash
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# usage
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if [ ! $# -eq 2 ] ; then
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echo -e "usage: $0 <CumulusVX.qcow2> <new glance image name>, e.g.:\n"
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echo "$0 CumulusVX-2.5.3-f3df86c478e1a4ef.qcow2 CumulusVX"
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exit -1
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fi
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# sudo check
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if [ ! $UID -eq 0 ] ; then
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echo "Insufficient privileges. Please consider using sudo -s."
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exit -1
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fi
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CUMULUS_QCOW2=$1
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CUMULUS_QCOW2_BASENAME=$(basename -s .qcow2 $1)
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CUMULUS_PATCHED_QCOW2=$1-patched.qcow2
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GLANCE_IMAGE_NAME=$2
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GLANCE_IMAGE_RELEASE=$CUMULUS_QCOW2_BASENAME
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TMP_NAME="CumulusVX-$GLANCE_IMAGE_RELEASE"
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TIMESTAMP=$(date +%Y%m%d%H%M%S)
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function safe_unmount() {
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echo -n "Unmounting $1..."
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RETRY=0
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until umount $1 &>/dev/null
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do
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echo -n "."
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sleep 1
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RETRY=$((RETRY+1))
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if [ "$RETRY" -ge "5" ] ; then
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echo
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echo "ERROR: unable to unmount working directory $1"
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exit 1
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fi
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done
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echo
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return 0
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}
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# check for an existing image with the same name and offer to delete it prior to creating a new one
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CHECK_FOR_EXISTING_IMAGE=$(glance --os-image-api-version 1 image-show $GLANCE_IMAGE_NAME 2>&1)
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if [ $? == 0 ] ; then
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glance --os-image-api-version 1 image-show $GLANCE_IMAGE_NAME
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echo
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echo
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read -r -p "There is already an image with the same name in glance. Do you want to overwrite it? [y/N] " RESPONSE
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if [[ $RESPONSE =~ ^([yY][eE][sS]|[yY])$ ]] ; then
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echo "Deleting existing image $GLANCE_IMAGE_NAME..."
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echo "==========================================================="
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glance --os-image-api-version 1 image-delete $GLANCE_IMAGE_NAME
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else
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echo "An image with the same name already exists. Either delete this image or choose another name."
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exit 1
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fi
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fi
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echo
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echo "Creating CumulusVX image..."
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echo "==========================================================="
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# check version
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if [[ "$CUMULUS_QCOW2_BASENAME" =~ ^cumulus-vx-2\.5 ]] ; then
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# handle 2.5.x versions
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CUMULUS_VERSION=2
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elif [[ "$CUMULUS_QCOW2_BASENAME" =~ ^cumulus-linux-3\. ]] ; then
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# handle 3.x versions
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CUMULUS_VERSION=3
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else
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echo "Unsupported version of Cumulus VX, currently this script supports versions 2.5.x and 3.x"
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exit 1
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fi
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qemu-img convert -O raw $CUMULUS_QCOW2 $CUMULUS_QCOW2_BASENAME.raw
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LOOPDEV=$(kpartx -av $CUMULUS_QCOW2_BASENAME.raw)
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if [ $CUMULUS_VERSION == 2 ]; then
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# partition layout Cumulus VX 2.5.x: part1 = boot, part2 = root
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LOOPDEV_PART_BOOT=$(echo "$LOOPDEV" | sed '1q;d' | cut -d " " -f 3)
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LOOPDEV_PART_ROOT=$(echo "$LOOPDEV" | sed '2q;d' | cut -d " " -f 3)
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elif [ $CUMULUS_VERSION == 3 ]; then
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# partition layout Cumulus VX 3.x: part1 = grubboot, part2 = onieboot, part3 = boot, part4 = root
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LOOPDEV_PART_BOOT=$(echo "$LOOPDEV" | sed '3q;d' | cut -d " " -f 3)
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LOOPDEV_PART_ROOT=$(echo "$LOOPDEV" | sed '4q;d' | cut -d " " -f 3)
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fi
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mkdir cumulusvx-boot-$TIMESTAMP
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mkdir cumulusvx-root-$TIMESTAMP
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echo
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echo "Injecting changes to use serial console and startup script to get switch config..."
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echo "=================================================================================="
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mount /dev/mapper/$LOOPDEV_PART_BOOT cumulusvx-boot-$TIMESTAMP
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mount /dev/mapper/$LOOPDEV_PART_ROOT cumulusvx-root-$TIMESTAMP
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if [ $CUMULUS_VERSION == 2 ]; then
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# changing grub and inittab to use a serial console on kernel command line
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sed -i.bak -e s/"linux \/bzImage root=\/dev\/sda2"/"linux \/bzImage root=\/dev\/sda2 console=ttyS0 console=tty0"/g cumulusvx-root-$TIMESTAMP/vbox_grub.cfg
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sed -i.bak -e s/"linux \/bzImage root=\/dev\/sda2"/"linux \/bzImage root=\/dev\/sda2 console=ttyS0 console=tty0"/g cumulusvx-boot-$TIMESTAMP/grub/grub.cfg
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sed -i.bak -e s/"# S0:3:respawn:\/sbin\/getty -L \$(get-cmdline-console) vt100"/"S0:3:respawn:\/sbin\/getty -L \$(get-cmdline-console) vt100"/g cumulusvx-root-$TIMESTAMP/etc/inittab
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elif [ $CUMULUS_VERSION == 3 ]; then
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# changing grub to show boot log
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sed -i.bak -e s/"console=tty0 quiet"/"console=tty0"/g cumulusvx-boot-$TIMESTAMP/grub/grub.cfg
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fi
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# append a script to import the configuration defined in VM Maestro to rc.local
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sed -i.bak -e s/"^exit 0$"/""/g cumulusvx-root-$TIMESTAMP/etc/rc.local
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cat << EOF >> cumulusvx-root-$TIMESTAMP/etc/rc.local
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mkdir /virl-config
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mount /dev/sdb1 /virl-config
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chmod +x /virl-config/cumulusvx.sh
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/virl-config/cumulusvx.sh >/var/log/virl-startup.log
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EOF
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#DEBUG:
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# run bash to allow manual changes to the image before packing
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#
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#bash
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safe_unmount cumulusvx-boot-$TIMESTAMP
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safe_unmount cumulusvx-root-$TIMESTAMP
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rm -rf cumulusvx-boot-$TIMESTAMP
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rm -rf cumulusvx-root-$TIMESTAMP
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kpartx -d $CUMULUS_QCOW2_BASENAME.raw
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echo
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echo "Saving CumulusVX image..."
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echo "==========================================================="
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qemu-img convert -O qcow2 $CUMULUS_QCOW2_BASENAME.raw $CUMULUS_PATCHED_QCOW2
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# use e1000 for now as with virtio we get dhcp errors due to "bad udp checksum" in Debian
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glance image-create --container-format bare --disk-format qcow2 --visibility public --name $GLANCE_IMAGE_NAME \
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--file $CUMULUS_PATCHED_QCOW2 --property hw_disk_bus=ide --property serial=1 \
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--property hw_vif_model=e1000 --property hw_cdrom_type=ide --property release="$GLANCE_IMAGE_RELEASE" --property subtype=CumulusVX --property config_disk_type=disk
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# create default flavor
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CHECKING_FOR_EXISTING_FLAVOR=$(nova flavor-show CumulusVX.small 2>&1)
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if [ $? == 1 ]; then
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echo "Creating default flavor CumulusVX.small..."
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echo "==========================================================="
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nova flavor-create --is-public true CumulusVX.small auto 256 0 1
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fi
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echo
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echo "Cleaning up..."
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echo "==========================================================="
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rm $CUMULUS_QCOW2_BASENAME.raw
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