1- Repo update
	/etc/apt/sources.list.d/openstack-release-2011_2-maverick.list
	# Release Cactus
	# deb http://ppa.launchpad.net/openstack-release/2011.2/ubuntu maverick main
	# deb-src http://ppa.launchpad.net/openstack-release/2011.2/ubuntu maverick main

	# Release Diablo
	deb http://ppa.launchpad.net/openstack-release/2011.3/ubuntu maverick main
	deb-src http://ppa.launchpad.net/openstack-release/2011.3/ubuntu maverick main

2- Services stop :
cd /etc/init.d/
for i in $(ls nova-*); do service $i stop; done
service rabbitmq-server stop

3- Kill da services
ps axl | pouet

4- Drop tables

drop table block_device_mapping;
drop table snapshots;
drop table provider_fw_rules;
drop table instance_type_extra_specs;
drop table virtual_interfaces;
drop table volume_types;
drop table volume_type_extra_specs;
drop table volume_metadata;
drop table virtual_storage_arrays;

5- aptitude update && aptitude upgrade

6- update nova.conf :
--dhcpbridge_flagfile=/etc/nova/nova.conf
--dhcpbridge=/usr/bin/nova-dhcpbridge
--logdir=/var/log/nova
--state_path=/var/lib/nova
--lock_path=/var/lock/nova
--flagfile=/etc/nova/nova-compute.conf
--force_dhcp_release=True
--use_deprecated_auth
--verbose
--daemonize=1
--s3_host=172.16.40.11
--rabbit_host=172.16.40.11
--cc_host=172.16.40.11
--ec2_url=http://172.16.40.11:8773/services/Cloud
--ec2_host=172.16.40.11
--ec2_dmz_host=172.16.40.11
--ec2_port=8773
--fixed_range=192.168.0.0/12
--FAKE_subdomain=ec2
--routing_source_ip=10.0.10.14
--sql_connection=mysql://user:[email protected]/nova
--glance_host=172.16.40.13
--glance_port=9292
--image_service=nova.image.glance.GlanceImageService
--image_decryption_dir=/var/lib/nova/tmp
--network_manager=nova.network.manager.VlanManager
--public_interface=eth0
--vlan_interface=eth1
--iscsi_ip_prefix=172.16.40.12
--vnc_enabled
--multi_host=T