THREE NODE ARCHITECTURE

Openstack three node architecture

1) Controller

2) Compute

3) Network

Following setting is applied to Oracle VM VirtualBox Manager.

Before creating 3 nodes we need to set-up.

- Management Network

 For openstack service communication

- Tunnel Network

 For openstack VM's communication      

- External Network

 Provides internet access to the virtual machines.

Now we'll set-up these networks.

Goto File-->Preferences-->Network-->Host-only Networks

Add three interfaces and edit it.

1st interface:

IPv4 Address: 10.10.10.1

IPv4 Network Mask: 255.255.255.0

2st interface:

IPv4 Address: 10.20.20.1

IPv4 Network Mask: 255.255.255.0

3st interface:

IPv4 Address: 192.168.100.1

IPv4 Network Mask: 255.255.255.0

Controller :

Create new VM

Name: Controller

Type: Linux

Version: Ubuntu(64 bit)

-->Next

Memory size: 2048MB or more

-->Next

Select Create a virtual hard drive now

-->Next

Select VDI(Virtual Disk Image)

-->Next

Select Dynamically allocated

-->Next

File Location: browse where it is available

Size: 20GB or more

Start the same VM and select ubuntu server image and complete the installation.

While installation Choose software to install: OpenSSH server

OR

Later also you can install this if it is skipped.

   

Once you finished the installation, try to ping google.com and if it works means VM is created successfully.

The first thing need to do is update and upgrade it.

   

$sudo su

#nano /etc/hosts

comment out 127.0.0.1

introduce the following host

10.10.10.10 controller

10.10.10.11 compute

10.10.10.12 network

On the same VM

Goto Setting-->Network

Under Adapter 1:    

Check Enable Network Adapter

Attached to: Host-only Adapter

Name: et0

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

Promiscuous Mode: Allow All

Under Adapter 2:

Check Enable Network Adapter

Attached to: NAT

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

Now let's create two clone of this VM so we can have CONTROLLER, COMPUTE and NETWORK node.

Controller Node: -

# nano /etc/hostname

controller

# nano /etc/network/interfaces

auto eth0

iface eth0 inet static

address 10.10.10.10

netmask 255.255.255.0

auto eth1

iface eth1 inet dhcp

# restart

Compute :

Compute Node: -

Goto Setting-->Network

Under Adapter 1:    

Check Enable Network Adapter

Attached to: Host-only Adapter

Name: et0

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

Promiscuous Mode: Allow All

Under Adapter 2:    

Check Enable Network Adapter

Attached to: Host-only Adapter

Name: et1

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

Promiscuous Mode: Allow All

Under Adapter 3:

Check Enable Network Adapter

Attached to: NAT

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

   

$sudo su

#nano /etc/hostname

compute

#nano /etc/network/interfaces

auto eth0

iface eth0 inet static

address 10.10.10.11

netmask 255.255.255.0

   

auto eth1

iface eth1 inet static

address 10.20.20.11

netmask 255.255.255.0

auto eth2

iface eth2 inet dhcp

# ping google.com

# ping 10.10.10.10

# restart

Network :

Network Node: -

Goto Setting-->Network

Under Adapter 1:    

Check Enable Network Adapter

Attached to: Host-only Adapter

Name: et0

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

Promiscuous Mode: Allow All

Under Adapter 2:    

Check Enable Network Adapter

Attached to: Host-only Adapter

Name: et1

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

Promiscuous Mode: Allow All

Under Adapter 3:    

Check Enable Network Adapter

Attached to: Host-only Adapter

Name: et2

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

Promiscuous Mode: Allow All

Under Adapter 4:

Check Enable Network Adapter

Attached to: NAT

Under Advanced

Adapter Type: Paravirtualized Network(virtio-net)

   

$sudo su

#nano /etc/hostname

network

#nano /etc/network/interfaces

auto eth0

iface eth0 inet static

address 10.10.10.11

netmask 255.255.255.0

   

auto eth1

iface eth1 inet static

address 10.20.20.11

netmask 255.255.255.0

auto eth2

iface eth2 inet manual

up ip link set dev $IFACE up

down ip link set dev $IFACE down    

auto eth3

iface eth3 inet dhcp

#ping google.com

#ping 10.10.10.10

#ping 10.10.10.11

# restart

If nodes are set-up well then you should be able to ping among all node to each other.

At this level if all work well then openstack services are ready to install on these nodes.