Openstack with IPv6 with lots of addresses!

After being inspired to update my IPv6 experience in my previous post, I figured it was time to start enabling IPv6 within my Openstack lab environment. It's surprisingly easy as it's similar to many dual-stacked environments that support IPv4/IPv6 today. The following is a basic Openstack Icehouse single node install with a Single Flat Network (I'll explain shortly), dual-stacked topology. Sound good? Let's get started!



For this setup, I'm using a spare tower with a single NIC (you only need one for testing). I'm using the Single Flat Network topology as it is simple, yet effective with IPv6. Although Neutron L3 Routers are not supported as of yet, you can still have a succesful dual-stacked network. IPv6 Stateless Address Autoconfiguration (SLAAC) is not supported so each instance will have to have addresses statically assigned. At least IPv6 Security Groups work!


You have to have an IPv6 enabled network, plain and simple. Many ISP's are now providing some form of IPv6 capability (usually 6rd) to a residential modem (for home lab testing) or you could enable this in a closed lab. The other option was discussed in my previous post regarding setting up a tunnel broker service from Hurricane Electric, Gogonet, or several others out there. For now, I'll use the /60 given to me by my own ISP for testing.


So, aside from a vanilla Ubuntu 14.04 LTS install, we will be installing and configuring the following:

  • Open vSwitch
  • RabbitMQ
  • MySQL
  • Keystone
  • Glance
  • Nova
  • Neutron (ML2 plugin)
  • Cinder
  • Horizon
  • SPICE Console

This configuration does not have the following: - NAT (you have 18,446,744,073,709,551,615 IP's at your disposal, so forget about it)

  • Neutron L3 virtual routers (not supported yet)
  • VXLAN tunnels (again....not needed)
  • Floating IP's (no NAT involved. We have real dual-stacked hosts!)

Ready? Let's begin!

Controller Setup

From a brand new Ubuntu 14.04 install, log in as root and run the following:

apt-get update 
apt-get dist-upgrade -y 
apt-get install openvswitch-switch -y

This will make sure you are running the latest kernel and install the ever so import Open vSwitch (for a good primer on Open vSwitch, check out David Mahler's YouTube channel) Make sure you have a hostname in /etc/hosts that includes your IPv6 IP mapped to your hostname. Here is an example of mine: localhost controller 

# The following lines are desirable for IPv6 capable hosts  2002:306:837c:5670::5 controller 
::1 localhost ip6-localhost ip6-loopback 
ff02::1 ip6-allnodes 
ff02::2 ip6-allrouters

Network configuration

You'll need to statically assign your IP addresses in use. Open your interfaces file:

vim /etc/network/interfaces

And configure it with your respective IP address ranges. I've used the following (public side obfuscated for obvious reasons):

# The loopback network interface 
auto lo iface lo inet loopback 

# The primary network interface - bridges to br-eth0 
auto eth0 iface eth0 inet manual 
up ip link set $IFACE up 
up ip address add dev $IFACE 
down ip link set $IFACE down 

# br-eth0 
auto br-eth0 
iface br-eth0 inet static address 
netmask 24 
# Google IPv4 DNS servers 

# IPv6 eth0 
iface br-eth0 inet6 static 
address 2002:306:837c:5670::5 
netmask 64 
gateway 2002:306:837c:5670::1 

# Google IPv6 DNS servers 
dns-nameservers 2001:4860:4860::8844 2001:4860:4860::8888

Once your interfaces file is complete, you'll need to enable IPv4/v6 packet forwarding:

sed -i 's/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=1/' /etc/sysctl.conf
sed -i 's/#net.ipv6.conf.all.forwarding=1/net.ipv6.conf.all.forwarding=1/' /etc/sysctl.conf
sysctl -p

With networking completed, let's create our OVS bridges:

ovs-vsctl add-br br-int 
ovs-vsctl add-br br-eth0

Finally, you'll bridge your eth0 and new bridge interface. Running the following will kick you out of the server if you are managing it via eth0 (which you probably are) so hence we reboot after:

ovs-vsctl add-port br-eth0 eth0 && reboot

Also, you'll probably see the following message upon reboot:

“Waiting for network configuration”

To fix this edit the following file as root:

vim /etc/init/failsafe.conf

Change the first sleep command to:

sleep 5

And comment out the following lines:

$PLYMOUTH message --text="Waiting for network configuration..." || : 
sleep 40 
$PLYMOUTH message --text="Waiting up to 60 more seconds for network configuration..." || : 
sleep 59

Install Openstack dependencies

Install the following:

apt-get install mysql-server python-mysqldb openssl rabbitmq-server python-keyring ntp curl -y

Change the default guest account password in RabbitMQ

rabbitmqctl change_password guest yournewpassword

MySQL configuration

You'll need to make some modifications to the my.cnf file. Edit my.cnf:

vim /etc/mysql/my.cnf

And add the following under [mysqld]:

# * Support OpenStack utf8 encoding 
default-storage-engine = innodb 
collation-server = utf8_general_ci 
init-connect='SET NAMES utf8' 
character-set-server = utf8 innodb_file_per_table

And change the bind address from to the following:

bind-address = ::

Save the file and restart MySQL:

service mysql restart

Now initialize the MySQL data directory:


And secure the installation:


Now we can make the required databases:

mysql -u root -p

Once at the MySQL prompt, create the databases as documented here:

GRANT ALL ON keystone.* TO 'keystoneUser'@'%' IDENTIFIED BY 'keystonePass'; 
GRANT ALL ON glance.* TO 'glanceUser'@'%' IDENTIFIED BY 'glancePass'; 
GRANT ALL ON nova.* TO 'novaUser'@'%' IDENTIFIED BY 'novaPass'; 
GRANT ALL ON cinder.* TO 'cinderUser'@'%' IDENTIFIED BY 'cinderPass'; 
GRANT ALL ON neutron.* TO 'neutronUser'@'%' IDENTIFIED BY 'neutronPass'; 
GRANT ALL ON heat.* TO 'heatUser'@'%' IDENTIFIED BY 'heatPass'; 

Use your own users and passwords if you want, just remember what they were :)

### Keystone

Self explanatory from the Keystone install page:

apt-get install keystone -y

Update the keystone configuration file:

vim /etc/keystone/keystone.conf

Uncomment this line:


Add this line (with your controller IPv6 address):

bind_host = 2002:306:837c:5670::5

Find this line:

connection = sqlite:////var/lib/keystone/keystone.db

And replace it with your FDQN info:

connection = mysql://

Remember...if you changed any of the default passwords to make the proper changes. After than, run the following:

rm /var/lib/keystone/keystone.db 
su -s /bin/sh -c "keystone-manage db_sync" keystone 
service keystone restart

Populate Keystone Data

Once you've restarted keystone, you have to bootstrap keystone database with an admin user account and set the API endpoints. You can use the script found here or use the ones I've forked:

cd ~ 


## Modify following line: 


## Modify following line: 

chmod +x 
chmod +x


** Remember if you change any of the default passwords, please make the respective modifications in the script.

Run curl to test the keystone install:

curl -H 'x-auth-token: ADMIN' | python -m json.tool

Run the following to delete expired tokens, since they are kept in your database indefinitely:

(crontab -l 2>&1 | grep -q token_flush) || echo '@hourly /usr/bin/keystone-manage token_flush >/var/log/keystone/keystone-tokenflush.log 2>&1' >> /var/spool/cron/crontabs/root

Last steps for this are to create your Nova Resource Configuration (RC) file:

vim ~/.novarc

And add the following:

export OS_USERNAME=admin 
export OS_PASSWORD=admin_pass 
export OS_TENANT_NAME=admin 
export OS_AUTH_URL="" 
export OS_AUTH_STRATEGY=keystone 
export OS_NO_CACHE=1 
export NOVA_VERSION=1.1 
export NOVA_REGION_NAME=RegionOne

Append to your bashrc file:

vim ~/.bashrc


if [ -f ~/.novarc ]; then . ~/.novarc fi

Load it:

source ~/.bashrc

And finally...test Keystone with a basic list function:

root@controller:~# keystone tenant-list

|                id                |   name  | enabled |
| 5d356e2c4f144f6fb397491150d74483 |  admin  |   True  |
| 6683b0739df04093aebf1616ca8b9b18 | service |   True  |


Installing Glance is easy, just use the Glance install page.

First, run the following:

apt-get install glance python-mysqldb -y

Edit the Glance API configuration:

vim /etc/glance/glance-api.conf

With your controller information:

bind_host = 2002:306:837c:5670::5 

registry_host =  

rabbit_host = 

connection =    mysql:// 

auth_uri =  
auth_host = 
auth_port = 35357 
auth_protocol = http 
admin_tenant_name = service 
admin_user = glance 
admin_password = service_pass 

flavor = keystone

Now to the same editing to the Glance registry configuration:

vim /etc/glance/glance-registry.conf


bind_host = 2002:306:837c:5670::5 
connection = mysql:// 
auth_uri = 
auth_host = 
auth_port = 35357 
auth_protocol = http 
admin_tenant_name = service 
admin_user = glance 
admin_password = service_pass 

flavor = keystone

Then run the following to remove the sqlite config (if it exists) and sync the db:

rm /var/lib/glance/glance.sqlite su -s /bin/sh -c "glance-manage db_sync" glance 
service glance-api restart; service glance-registry restart

Add Images to Glance

Run the following to add images (in this case CirrOS and Ubuntu 64-bit) to the Glance repo:

glance image-create --location --name "CirrOS 0.3.2" --is-public true --container-format bare --disk-format qcow2 
glance image-create --location --name "Ubuntu 14.04 LTS" --is-public true --container-format bare --disk-format qcow2

You can use any image you want. If you already have an ISO then you'll have to create an .img file. Use the following link for the step by step process.

Once completed, list your images to verify:

root@controller:~# glance image-list
| ID                                   | Name             |   
Disk Format | Container Format | Size      | Status |
| 0318f977-6319-4461-943d-99a90e9272bc | CirrOS 0.3.2     |  
qcow2       | bare             | 13167616  | active |
| 578a47ea-29e1-48c4-8647-c0b6a4afe22b | Ubuntu 14.04 LTS | 
qcow2       | bare             | 255132160 | active |


Most most of this is taken from the Nova install page. Since this is a single machine install (controller, compute and service nodes into one), I'm installing the libvirt dependencies as well as the other nova components. 

First, run the following:

apt-get install python-novaclient nova-api nova-cert nova-consoleauth nova-scheduler nova-conductor nova-spiceproxy linux-image-extra-`uname -r` ubuntu-virt-server libvirt-bin pm-utils nova-compute-kvm python-guestfs -y

If you are using a separate physical host as a compute node, then only run the following on that host (as well as update your /etc/hosts file with the proper host entries):

apt-get install linux-image-extra-`uname -r` ubuntu-virt-server libvirt-bin pm-utils nova-compute-kvm python-guestfs -y

Make the current kernel readable and destroy the libvirt default networks:

dpkg-statoverride --update --add root root 0644 /boot/vmlinuz-$(uname -r)

virsh net-destroy default
virsh net-undefine default
service libvirtd restart

Make sure the vhost_net module loads during boot:

echo vhost_net>> /etc/modules 

Add the following libvirt configurations:

sed -i 's/^#listen_tls = 0/listen_tls = 0/' /etc/libvirt/libvirtd.conf 
sed -i 's/^#listen_tcp = 1/listen_tcp = 1/' /etc/libvirt/libvirtd.conf 
sed -i 's/^#auth_tcp = "sasl"/auth_tcp = "none"/' /etc/libvirt/libvirtd.conf 
sed -i 's/^env libvirtd_opts="-d"/env libvirtd_opts="-d -l"/' /etc/init/libvirt-bin.conf 
sed -i 's/^libvirtd_opts="-d"/libvirtd_opts="-d -l"/' /etc/default/libvirt-bin

Download a custom nova.conf file:

cd /etc/nova mv nova.conf /nova.conf.bak 


Modify the nova.conf with your own host information, then change ownership:

chown nova: nova.conf 
chmod 640 nova.conf

Remove the sqlite library and sync the nova db:

rm /var/lib/nova/nova.sqlite 
su -s /bin/sh -c "nova-manage db sync" nova

Finally restart nova services:

cd /etc/init/; for i in $(ls nova-* | cut -d \. -f 1 | xargs); do sudo service $i restart; done


First, install the following:

apt-get install neutron-server neutron-plugin-ml2 neutron-plugin-openvswitch-agent neutron-dhcp-agent neutron-metadata-agent -y

Next, get your "SERVICE TENANT ID" with the following command:

root@controller:~# keystone tenant-get service
|   Property  |              Value               |
| description |                                  |
|   enabled   |               True               |
|      id     | e1c66cceefe543919c19b8e5533966c7 |
|     name    |             service              |

Next edit the neutron configuration file:

vim /etc/neutron/neutron.conf

And edit the following fields:

bind_host = put your IPv6 address here 
auth_strategy = keystone 
allow_overlapping_ips = True 
rabbit_host =     
notify_nova_on_port_status_changes = True 
notify_nova_on_port_data_changes = True 
nova_url = 
nova_region_name = RegionOne 
nova_admin_username = nova 
nova_admin_tenant_id = put your SERVICE TENANT ID here 
nova_admin_password = service_pass 
nova_admin_auth_url = 

core_plugin = neutron.plugins.ml2.plugin.Ml2Plugin 

service_plugins = 

auth_uri =  
auth_host = 
auth_port = 35357 
auth_protocol = http 
admin_tenant_name = service 
admin_user = neutron 
admin_password = service_pass 
signing_dir = $state_path/keystone-signing 

connection = mysql://

Now edit the ML2 plugin ini file:

vim /etc/neutron/plugins/ml2/ml2_conf.ini

With the following:

type_drivers = local,flat
mechanism_drivers = openvswitch,l2population 

flat_networks = * 

enable_security_group = True 
firewall_driver = neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver 

enable_tunneling = False 
local_ip = insert your IPv4 address here 
network_vlan_ranges = physnet1 bridge_mappings = physnet1:br-eth0

Now edit the metadata agent INI file:

vim /etc/neutron/metadata_agent.ini


# The Neutron user information for accessing the Neutron API.     
auth_url = 
auth_region = RegionOne 
admin_tenant_name = service 
admin_user = neutron 
admin_password = service_pass 
nova_metadata_ip = your IPv4 address 
nova_metadata_port = 8775 
metadata_proxy_shared_secret = secretPass

Ok....almost there. Now edit the DHCP INI file:

vim /etc/neutron/dhcp_agent.ini

And add the following:

interface_driver = neutron.agent.linux.interface.OVSInterfaceDriver 
use_namespaces = True 
enable_isolated_metadata = True 
dhcp_domain =

Finally, do a neutron service restart and you're done with neutron:

cd /etc/init/; for i in $(ls -1 neutron-* | cut -d \. -f 1); do sudo service $i restart; done

Creating a Neutron Network

Although this is a flat topology using a single IPv4 and IPv6 subnet, it is easy to add additional subnets. I was just too lazy to add another vlan to my trunk :) You'll create two Neutron networks, one for each inet family (IPv4 and IPv6). You'll use the subnets defined in your network configuration file. I'm giving you the example of my home lab network. The IPv4 address space has public access outbound (via SNAT). For other types of configuration, use the Neutron/ML2 link here. So first, create a physical "mapping":

neutron net-create --tenant-id $ADMIN_TENTANT_ID ext-netaccess --shared --provider:network_type flat --provider:physical_network physnet1

Next create an IPv4 subnet for the "ext-netaccess":

neutron subnet-create --ip-version 4 --tenant-id $ADMIN_TENANT_ID ext-netaccess --allocation-pool start=,end= --dns_nameservers list=true

And then create an IPv6 subnet for the "ext-netaccess":

neutron subnet-create --ip-version 6 --disable-dhcp --tenant-id $ADMIN_TENANT_ID ext-netaccess 2002:306:837c:5670::/64 --allocation-pool start=2002:306:837c:5670::6,end=2002:306:837c:5670:ffff:ffff:ffff:fffe


Install the Cinder components as listed in the Cinder install page:

apt-get install cinder-api cinder-scheduler -y

Edit the cinder.conf file:

vim /etc/cinder/cinder.conf

With your own IP and host information:

my_ip = 2002:306:837c:5670::5 
glance_host = 2002:306:837c:5670::5 
osapi_volume_listen = 2002:306:837c:5670::5 

rpc_backend = cinder.openstack.common.rpc.impl_kombu 
rabbit_host = 

connection = mysql:// 

auth_uri = 
auth_host = 
auth_port = 35357 
auth_protocol = http admin_tenant_name =
service admin_user = cinder 
admin_password = service_pass

If you've configured a separate LVN volume for block storage, then follow this link to create the Cinder LVM grouping.


Last, but not least, install the Horizon dashboard:

apt-get install openstack-dashboard memcached -y

Just edit the dashboard config file:

vim /etc/openstack-dashboard/

With your host information:


And you're done. You should be able to reach your Horizon dashboard now.

Building Your First Instance

Ok...let's make an instance. First, list your current images and get an image ID:

root@controller:~# glance image-list +--------------------------------------+-------------------------+-------------+------------------+-----------+--------+ | ID | Name | Disk Format | Container Format | Size | Status | +--------------------------------------+-------------------------+-------------+------------------+-----------+--------+ | 0318f977-6319-4461-943d-99a90e9272bc | CirrOS 0.3.2 | qcow2 | bare | 13167616 | active | | 578a47ea-29e1-48c4-8647-c0b6a4afe22b | Ubuntu 14.04 LTS | qcow2 | bare | 255132160 | active | | 04988647-8634-46f3-aa06-11290b24d8d8 | Ubuntu 14.04 LTS 32-bit | qcow2 | bare | 250872320 | active | +--------------------------------------+-------------------------+-------------+------------------+-----------+--------+

I'm using the Ubuntu 14.04 LTS 32-bit image (04988647-8634-46f3-aa06-11290b24d8d8). Remember, your image ID's will be unique. Now we'll pick a flavor:

root@stackiswhack:~# nova flavor-list +----+-----------+-----------+------+-----------+------+-------+-------------+-----------+ | ID | Name | Memory_MB | Disk | Ephemeral | Swap | VCPUs | RXTX_Factor | Is_Public | +----+-----------+-----------+------+-----------+------+-------+-------------+-----------+ | 1 | m1.micro | 256 | 5 | 0 | 128 | 1 | 1.0 | True | | 2 | m1.tiny | 512 | 10 | 25 | 256 | 1 | 1.0 | True | | 3 | m1.small | 1024 | 10 | 50 | 512 | 1 | 1.0 | True | | 4 | m1.medium | 2048 | 10 | 100 | 1024 | 2 | 1.0 | True | | 5 | m1.large | 4096 | 10 | 200 | 2048 | 4 | 1.0 | True | | 6 | m1.xlarge | 8192 | 10 | 400 | 4096 | 8 | 1.0 | True | +----+-----------+-----------+------+-----------+------+-------+-------------+-----------+

I'll use a micro image (ID 1). Now let's build:

nova boot --image 04988647-8634-46f3-aa06-11290b24d8d8 --key-name dc_key --flavor 1 ubuntu32

This may take some time as it pulls the image and builds your instance. Once completed run the following to get your instance's information:

root@controller:~# nova list +--------------------------------------+----------+---------+------------+-------------+---------------------------------------------------+ | ID | Name | Status | Task State | Power State | Networks | +--------------------------------------+----------+---------+------------+-------------+---------------------------------------------------+ | 0e30631e-6700-4c45-84c8-935dc30b75c1 | ubuntu32 | ACTIVE | - | Running | ext-netaccess=2002:306:837c:5670::6, | +--------------------------------------+----------+---------+------------+-------------+---------------------------------------------------+

The IPv4 address has been assigned and configured for your host. The IPv6 address has been assigned but not configured, so we have to do it manually:

ssh -i dc_key.pem ubuntu@ 
sudo ip -6 address add 2002:306:837c:5670::6/64 dev eth0 
sudo ip -6 route add default via 2002:306:837c:5670::1

And we're done!


This is a standard single node build for Openstack Icehouse that supports dual-stack IPv6. Mind you, this is only built for lab purposes and testing, but I did it because most of the guides did not show a complete single node build or show how to enable v6. I hope this helps you in your testing. And now...on to Openstack flow analysis. Cheers!