kuryr

Docker for OpenStack Neutron

Kuryr is a Docker network plugin that uses Neutron to provide networking services to Docker containers. It provides containerised images for the common Neutron plugins.

• Free software: Apache license
• Documentation: http://docs.openstack.org/developer/kuryr
• Source: http://git.openstack.org/cgit/openstack/kuryr
• Bugs: http://bugs.launchpad.net/kuryr

Features

• TODO

Prerequisites

$ sudo pip install -r requirements.txt

Installing Kuryr's libnetwork driver

Running the following will grab the requirements and install kuryr

$ sudo pip install .

Configuring Kuryr

Generate sample config, etc/kuryr.conf.sample, running the following

$ tox -e genconfig

Rename and copy config file at required path

$ cp etc/kuryr.conf.sample /etc/kuryr/kuryr.conf

Edit keystone section in /etc/kuryr/kuryr.conf, replace ADMIN_PASSWORD:

auth_uri = http://127.0.0.1:35357/v2.0
admin_user = admin
admin_tenant_name = service
admin_password = ADMIN_PASSWORD

In the same file uncomment the bindir parameter with the path for the Kuryr vif binding executables:

bindir = /usr/local/libexec/kuryr

Running Kuryr

Currently, Kuryr utilizes a bash script to start the service. Make sure that you have installed tox before the execution of the below command.

$ sudo ./scripts/run_kuryr.sh

After the booting, please restart your Docker service, e.g.,

$ sudo service docker restart

The bash script creates the following file if it is missing.

• /usr/lib/docker/plugins/kuryr/kuryr.json: Json spec file for libnetwork.

Note the root privilege is required for creating and deleting the veth pairs with pyroute2 to run.

Testing Kuryr

For a quick check that Kuryr is working create a network:

$ docker network create --driver kuryr test_net
785f8c1b5ae480c4ebcb54c1c48ab875754e4680d915b270279e4f6a1aa52283
$ docker network ls
NETWORK ID          NAME                DRIVER
785f8c1b5ae4        test_net            kuryr

To test it with tox:

$ tox

You can also run specific test cases using the -e flag, e.g., to only run the fullstack test case.

$ tox -e fullstack

Generating Documentation

We use Sphinx to maintain the documentation. You can install Sphinx using pip.

$ pip install -U Sphinx

In addition to Sphinx you will also need the following requirements (not covered by requirements.txt):

$ pip install oslosphinx reno 'reno[sphinx]'

The source code of the documentation are under doc, you can generate the html files using the following command. If the generation succeeds,a build/html dir will be created under doc.

$ cd doc
$ make html

Now you can serve the documentation at http://localhost:8080 as a simple website.

$ cd build/html
$ python -m SimpleHTTPServer 8080

Limitations

To create Docker networks with subnets having same/overlapping cidr, it is expected to pass unique pool name for each such network creation Docker command. Docker cli options -o and --ipam-opt should be used to pass pool names as shown below:

$ sudo docker network create --driver=kuryr --ipam-driver=kuryr \
  --subnet 10.0.0.0/16 --ip-range 10.0.0.0/24 \
  -o neutron.pool.name=neutron_pool1 \
  --ipam-opt=neutron.pool.name=neutron_pool1 \
  foo
  eddb51ebca09339cb17aaec05e48ffe60659ced6f3fc41b020b0eb506d364

Now Docker user creates another network with same cidr as the previous one, i.e 10.0.0.0/16, but with different pool name, neutron_pool2:

$ sudo docker network create --driver=kuryr --ipam-driver=kuryr \
  --subnet 10.0.0.0/16 --ip-range 10.0.0.0/24 \
  -o neutron.pool.name=neutron_pool2 \
  --ipam-opt=neutron.pool.name=neutron_pool2 \
  bar
  397badb51ebca09339cb17aaec05e48ffe60659ced6f3fc41b020b0eb506d786