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#!/bin/sh
VG='vg01'
ETC='/etc/cloudinit'
VARDIR='/var/lib/libvirt/cloudinit'
SCRIPTDIR='/usr/local/bin/leap_cloudadmin'
fail() { [ $# -eq 0 ] || echo "$@"; exit 1; }
bad_usage() { usage 1>&2; [ $# -eq 0 ] || fail "$@"; exit 1; }
usage() {
cat <<EOF
Usage: ${0##*/} [ $options ] guest_name
Creates a new guest VM using cloud-init to utilize nocloud.
options:
-h show usage
-s size disk size in GB
EOF
}
short_opts="hs:"
getopt_out=$(getopt --name "${0##*/}" \
--options "${short_opts}" -- "$@") &&
eval set -- "${getopt_out}" ||
fail "Error !"
while [ $# -ne 0 ]; do
cur=${1}; next=${2};
case "$cur" in
-h) Usage ; exit 0;;
-s) size=$next; shift;;
--) shift; break;;
esac
shift;
done
[ $# -lt 1 ] && bad_usage "must provide guest name"
[ $# -gt 1 ] && bad_usage "too many arguments"
vmname=$1
userdata="$ETC/$vmname-user-data"
[ -e /dev/$VG/$vmname ] && fail "/dev/$VG/$vmname exists - please delete it or choose another guest name"
[ -e $userdata ] || fail "please provide userdata in $userdata"
echo
echo "Creating guest VM $vmname with size: $size GB, using $userdata for clound-init"
echo
virsh dominfo $vmname > /dev/null 2>&1
if [ $? -eq 0 ]; then fail "Domain $vmname is defined in libvirt. Please undefine first."; fi
lvcreate -L ${size}g -n $vmname $VG
virt-clone -o leap-baseimage-wheezy -n $vmname -f /dev/$VG/$vmname --force
# resize second (root) partition
echo ",+," | sfdisk -N2 /dev/$VG/$vmname > /dev/null
$SCRIPTDIR/libvirt-make-seed-disk $VARDIR/$vmname-user-data.img $userdata
$SCRIPTDIR/libvirt-write-disk-attach-xml $VARDIR/$vmname-user-data.img > $VARDIR/$vmname-disk-attach.xml
echo
echo "Attached userdata-disk is at $VARDIR/$vmname-user-data.img"
echo
echo "Finished creating guest $vmname. Enjoy."
echo
echo Press <return> to start the new guest.
read bogus
echo
echo 'Starting new guest, attaching to console. Exit with Ctrl+]'
echo
virsh start $vmname
sleep 2
virsh attach-device $vmname $VARDIR/$vmname-disk-attach.xml
virsh console $vmname
#do we really need to detach the cloud-init disk ?
#virsh detach-device $vmname $VARDIR/$vmname-disk-attach.xml
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