From 096642065e8e7398a957bebabbbc85b691bec3b4 Mon Sep 17 00:00:00 2001
From: varac <varacanero@zeromail.org>
Date: Tue, 9 Oct 2012 15:50:55 +0200
Subject: initial commit, create-guest-with-cloudinit + helper scripts

---
 create-guest-with-cloudinit | 92 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100755 create-guest-with-cloudinit

(limited to 'create-guest-with-cloudinit')

diff --git a/create-guest-with-cloudinit b/create-guest-with-cloudinit
new file mode 100755
index 0000000..56eec5f
--- /dev/null
+++ b/create-guest-with-cloudinit
@@ -0,0 +1,92 @@
+#!/bin/sh 
+
+VG='vg01'
+ETC='/etc/cloudinit'
+VARDIR='/var/lib/libvirt/cloudinit'
+
+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
+
+libvirt-make-seed-disk $VARDIR/$vmname-user-data.img $userdata
+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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