Allow a vip to float across ports, this is needed when you configure a vip for corosync

prepare-vip.sh

#!/bin/bash -e
# Usage exmaple:
#   ./prepare-vip.sh 10.5.0.107 port1,port2,port3 foo_net
#
# This will prepare the vip 10.5.0.107 to be used by machines in ports `port1`, `port2` and `port3`
# in the the next `foo_net`0
PROG=$0
VIP="$1"
PORTS="$2"
PRIV_NET=${3:-"freyes_admin_net"}

function die() {
  local exit_code=$1
  local msg=${2:-"error message"}

  echo "$msg" >&2
  echo "Usage:" >&2
  echo "  $PROG <VIP> <PORTS> [PRIV_NET]"
  exit $exit_code
}


if [ "x$VIP" == "x" ]; then
  die 1 "please set VIP"
fi

if [ "x$PORTS" == "x" ]; then
  die 1 "please set PORTS"
fi

l=""
for p in $(echo $VIP | tr ',' "\n"); do
  neutron port-create --fixed-ip ip_address=$p --security-group default $PRIV_NET || echo "skip port already created for $p"
  l="$l ip_address=$p"
done

for PORT in $(echo $PORTS | tr ',' "\n"); do
  neutron port-update $PORT --allowed_address_pairs list=true type=dict $l
done