I'm using packstack to setup openstack on a CentOS 6.4 vagrant guest.

After installing, I change the libvirt_type in nova.conf.

The installation script is below.

Question: What do I need to do for the changes to take effect?

sudo yum install -y http://rdo.fedorapeople.org/rdo-release.rpm
sudo yum install -y openstack-packstack expect

expect << EOF
set timeout -1
spawn "/usr/bin/packstack" "--allinone"
expect "Setting up ssh keys...root@10.0.2.15's password:"
send "vagrant\n"
expect eof
EOF

# virtualbox guests only support type qemu
sed -i 's/^libvirt_type=kvm/libvirt_type=qemu/g' /etc/nova/nova.conf

# what do I need to do now for the changes to take effect?