Library for testing network virtual appliances using Docker
Test network virtual appliance using Docker containers
This project is a Python library for testing network virtual appliances.
The appliance being tested is referred to as a device under test or DUT.
This repository includes scripts and modules to build a simple appliance called Rabbit. Rabbit is Alpine Linux with a few packages pre-installed. Having this simple DUT allows to quickly test the alpy library and to demonstrate its features.
The tests for the Rabbit device share a lot of code so the code is organized as a library. The library is called carrot.
The DUT communicates with containers attached to each of its network links.
Guest network adapters are connected to the host via tap devices.
Each tap device lives in its network namespace. This namespace belongs to a dedicated container - a node. The node's purpose is to keep the namespace alive during the lifetime of a test.
For an application to be able to communicate with the DUT the application is containerized. The application container must be created in a special way: it must share network namespace with one of the nodes.
This sharing is supported by Docker. All we have to do is to create the
application container with the
--network=container:NODE_NAME Docker option.
For example, if we want to send traffic to the DUT via its first link, we create
a traffic generator container with Docker option
Alpy is licensed under:
See COPYING for more details.
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