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# -- Welcome!
You have come across a cloud computing network fabric controller. It has
identified itself as "Quantum." It aims to tame your (cloud) networking!
# -- Basics:
1) Quantum REST API: Quantum supports a REST-ful programmatic interface to
manage your cloud networking fabric.
2) Quantum Plugins: Quantum sports a plug-able architecture that allows
Quantum's REST API to be backed by various entities that can create a
cloud-class virtual networking fabric. The advantages of this plug-able
architecture is two-folds:
a) Allows for ANY open-source project or commercial vendor to write a
b) Allows Quantum users to not be tied down to a single Quantum
implementation and enables them to switch out a plug-in by simple editing a
config file - plugins.ini
# -- Dependencies
The following python packages are required to run quantum. These can be
installed using pip:
1) Install easy_install (there is probably a distribution specific package for
2) Install pip:
$ easy_install pip==dev
3) Install packages with pip:
$ pip install <package name>
# -- Configuring Quantum plug-in
1) Identify your desired plug-in. Choose a plugin from one of he options in
the quantum/plugins directory.
2) Update plug-in configuration by editing the quantum/plugins.ini file and
modify "provider" property to point to the location of the Quantum plug-in.
It should specify the class path to the plugin and the class name (i.e. for
a plugin class MyPlugin in quantum/plugins/myplugin/myplugin.py the
provider would be: quantum.plugins.myplugin.myplugin.MyPlugin)
3) Read the plugin specific README, this is usually found in the same
directory as your Quantum plug-in, and follow configuration instructions.
# -- Launching the Quantum Service
1) Start quantum using the following command [on the quantum service host]:
~/src/quantum$ PYTHONPATH=.:$PYTHONPATH python bin/quantum etc/quantum.conf
# -- Making requests against the Quantum Service
Please refer to sample Web Service client code in:
# -- CLI tools to program the Quantum-managed Cloud networking fabric
Quantum comes with a programmatic CLI that is driven by the Quantum Web
Service. You can use the CLI by issuing the following command:
~/src/quantum$ PYTHONPATH=.:$PYTHONPATH python quantum/cli.py
This will show help all of the available commands.
An example session looks like this:
$ export TENANT=t1
$ PYTHONPATH=. python quantum/cli.py -v create_net $TENANT network1
Created a new Virtual Network with ID:e754e7c0-a8eb-40e5-861a-b182d30c3441
# -- Writing your own Quantum plug-in
If you wish the write your own Quantum plugin, please refer to some concrete as
well as sample plugins available in:
There are a few requirements to writing your own plugin:
1) Your plugin should implement all methods defined in the
2) Copy your Quantum plug-in over to the quantum/quantum/plugins/.. directory
3) The next step is to edit the plugins.ini file in the same directory
as QuantumPluginBase class and specify the location of your custom plugin
as the "provider"
4) Launch the Quantum Service, and your plug-in is configured and ready to
manage a Cloud Networking Fabric.