OpenStack Ansible Roles Umbrella & Demo

Status

• on master branch
• on development branch

TL;DR

Step by step guide for Vagrant with KVM/Libvirt

What is this?

This repository contains a demo for the following Ansible roles:

Status	Role / Link
	openstack-glance
	openstack-horizon
	openstack-keystone
	openstack-neutron_dhcp_agent
	openstack-neutron_l3_agent
	openstack-neutron_plugin_ml2
	openstack-neutron_plugin_openvswitch_agent
	openstack-neutron_server
	openstack-nova_api
	openstack-nova_compute
	openstack-nova_conductor
	openstack-nova_consoleauth
	openstack-nova_novncproxy
	openstack-nova_scheduler

By default this demo builds 4 Trusty 64 VM's using Vagrant and provisions them with Ansible to build a working (yet basic) OpenStack infrastructure.

Architecture - Network diagram

    +----------------------Vagrant-Workstation----------------------+
    |                                                               |
    |  +---------------------------------------------------------+  |
    |  |                Management - 10.1.2.0/24                 |  |
    |  +---------------------------------------------------------+  |
    |        |             |             |                 |        |
    |        |.10          |.20          |.30              |.30+N-1 |
    |  +-----------+ +-----------+ +-----------+     +-----------+  |
    |  |           | |           | |           |     |           |  |
    |  |Controller | |  Network  | | Compute1  |. . .| ComputeN  |  |
    |  |           | |           | |           |     |           |  |
    |  +-----------+ +-----------+ +-----------+     +-----------+  |
    |                   |     |.5        |.6               | .6+N-1 |
    |                   |     |          |                 |        |
    |              +----+  +-------------------------------------+  |
    |              |       |     Tunnels - 192.168.129.0/24      |  |
    |              |       +-------------------------------------+  |
    |  +----------------------------------------------+             |
    |  |  External (Bridged to workstation network)   |             |
    |  +----------------------------------------------+             |
    +----------|----------------------------------------------------+
               |                           +------+
            +-----+                        |      +------+------+
          +-|-----|-+                      ++                   |
          | ||   || |-----------------------|    Internet     +-+
          +-|-----|-+                       |                 |
            +-----+                         +-----------+     |
        Router (+ DHCP)                                 +-----+

(Drawn with Monodraw alpha, courtesy of Milen Dzhumerov)

Architecture - Services distribution

Controller

• NTPd
• MySQL
• RabbitMQ server
• Keystone
• Glance
• Nova Conductor
• Nova ConsoleAuth
• Nova noVNC Proxy
• Nova Scheduler
• Nova API
• Neutron Server
• Neutron Plugin Modular Layer 2 (ML2)
• Horizon

Network

• NTPd
• Neutron Plugin Modular Layer 2 (ML2)
• Neutron Plugin OpenVSwitch agent
• Neutron Plugin Layer 3 agent
• Neutron Plugin DHCP agent

Compute nodes

• NTPd
• Neutron Plugin Modular Layer 2 (ML2)
• Neutron Plugin OpenVSwitch agent
• Nova Compute

How can I use this demo?

1. Get the code

---

Using git

Clone this repository and its submodules

git clone https://github.com/openstack-ansible-galaxy/vagrant-ansible-openstack.git
cd vagrant-ansible-openstack/
git submodule init
git submodule update

2. Set up Ansible and Vagrant

---

Install Ansible

http://docs.ansible.com/intro_installation.html

Install Vagrant

https://www.vagrantup.com/downloads.html

Set your default Vagrant provider

For instance:

export VAGRANT_DEFAULT_PROVIDER=parallels

Note

Virtualbox doesn't support nested virtualization. If you are using this hypervisor, set LIBVIRT_DRIVER to 'qemu' or in the Vagrantfile or in the shell's environment:

export LIBVIRT_DRIVER=qemu

or you will not be able to spawn virtual machines in your cloud.

Download and install an Ubuntu box

See VagrantCloud https://vagrantcloud.com for a comprehensive list of vagrant boxes. For instance:

• Parallels provider

vagrant box add fza/trusty64

• Virtualbox, VmWare desktop and Libvirt providers

vagrant box add breqwatr/trusty64

Set BOX_NAME environment variable as appropriate

BOX_NAME defaults to trusty64. To use a different box:

export BOX_NAME="breqwatr/trusty64"

Install required plugins

vagrant plugin install vagrant-cachier

If you are not using Virtualbox, install additional Vagrant plugins needed by your hypervisor.

For instance:

vagrant plugin install vagrant-parallels

Install core OpenStack clients

Install at least glance, neutron and nova clients on your workstation

For instance, using a virtual environment:

virtualenv .venv
. .venv/bin/activate
pip install python-glanceclient python-neutronclient python-novaclient

3. Run it! === By default 2 compute nodes are created. To spawn a different number of compute nodes, export the environment variable COMPUTE_NODES.

For instance:

export COMPUTE_NODES=3

When ready, just issue:

make

4. Enjoy ===

In the ./demo directory you will find an inventory and a playbook that can be used to initialize a fresh OpenStack Cloud setup and create a demo virtual machine.

Run ansible with:

ansible-playbook -i demo/inventory demo/playbook.yml

Alternatively, just run:

make demo

At the end of the play some debug messages are displayed about the newly created VM:

[...]
TASK: [Add the floating IP to demo-instance1] *********************************
skipping: [localhost]

TASK: [Get floating IP address] ***********************************************
ok: [localhost]

TASK: [Get noVNC console] *****************************************************
ok: [localhost]

TASK: [Message1] **************************************************************
ok: [localhost] => {
    "msg": "Your VM floating IP address is 192.168.0.101"
}

TASK: [Message2] **************************************************************
ok: [localhost] => {
    "msg": "ssh cirros@192.168.0.101 -oStrictHostKeyChecking=no -oUserKnownHostsFile=/dev/null"
}

TASK: [Message3] **************************************************************
ok: [localhost] => {
    "msg": "noVNC console http://10.1.2.10:6080/vnc_auto.html?token=1ed6ad07-eb5d-4810-ac79-f1fe8652ae69"
}

PLAY RECAP ********************************************************************
localhost                  : ok=21   changed=0    unreachable=0    failed=0

In the ./script directory there are 2 ".rc" scripts that can be sourced to manage the OpenStack setup.

Source one of them:

. scripts/openstack-admin-example.rc

And use OpenStack python clients as usual

# keystone tenant-list
+----------------------------------+---------+---------+
|                id                |   name  | enabled |
+----------------------------------+---------+---------+
| c64f42559fbb40078ef8900023bbe5a8 |  admin  |   True  |
| 198aad268c0242159b033bc24f3fb08a |   demo  |   True  |
| d16c66bed5e24e95baca607011a0119c | service |   True  |
+----------------------------------+---------+---------+

Last, Horizon is available at:

http://10.1.2.10/horizon/

Where 10.1.2.10 is the address of controller node.

5. Debugging ===

Ping/ssh the running instances

Login on the network node

$ vagrant ssh network

As superuser, run

# ip netns list

You will get an output like:

qdhcp-[ID]
qrouter-[ID]

where qrouter-[ID] is the OpenStack router you want to traverse (eg.: the demo-router)

If the security group for your instance has been configured to allow ICMP and TCP (port 22) traffic (as in the demo project), you will be able to reach the running instances at their internal or floating IP, like this:

# ip netns exec qrouter-[ID] ping 10.29.29.2  # or 192.168.0.10
# ip netns exec qrouter-[ID] ssh cirros@10.29.29.2  # password: cubswin:)

VNC for running instances

To access an instance with VNC you need to generate a [TOKEN] for it, like this:

$ . .venv/bin/activate
$ . scripts/openstack-demo-example.rc
$ nova get-vnc-console [INSTANCE-ID] novnc

then you can point your browser at the url you will get as an ouput. It should be something like:

http://10.1.2.10:6080/vnc_auto.html?token=[TOKEN]