A short blog post to share my experience in playing with opendaylight and docker.
Currently there is no native integration of Open vSwitch in Docker, i.e., one cannot use the Docker client to automatically add a container’s network interface to an Open vSwitch bridge during the creation of the container. However the last version of ovs provides a utility to use ovs with docker. As ovs support openflow 1.3. It provides a greate playground for practical work combining opendaylight, docker and ovs.
#Step 0 Installation
First install one of the last version of ovs.
Next install docker
#Install ovs-docker as root cd /usr/bin wget https://raw.githubusercontent.com/openvswitch/ovs/master/utilities/ovs-docker chmod a+rwx ovs-docker
#Step 1 Docker and Openvswitch
Manually create a first bridge to test.
#Create your bridge ovs-vsctl add-br ovs-br1 # create a bridge named 'ovs-br1' ovs-vsctl add-port ovs-br1 eth0 # attach eth0 to ovs-br1 ifconfig ovs-br1 18.104.22.168 netmask 255.255.255.0 up
Start two containers in different consoles
docker run -t -i --name container1 ubuntu /bin/bash docker run -t -i --name container2 ubuntu /bin/bash
Add a port to this docker
ovs-docker add-port ovs-br1 eth1 container1 22.214.171.124/24 ovs-docker add-port ovs-br1 eth1 container2 126.96.36.199/24
Play to ping your containers.
#Step 2 Openvswitch and opendaylight
You can follow this tutorial to learn how to develop a plugin for opendaylight.
Check you use Java 7.
git clone -b release/helium-sr2 https://git.opendaylight.org/gerrit/p/integration.git helium-integ-pristin cd helium-integ-pristin mvn clean install -DskipTests cd distributions/extra/karaf/target/assembly/ ./karaf
In karaf console, install the following feature
Next in another console
Set Controller (opendaylight ip)
export ip=127.0.0.1 export port=6633 ovs-vsctl set-controller ovs-br0 tcp:$ip:$port #Verify Connection ovs-vsctl list controller # verify that it's actively connected
Connect to dlux and check you can see your containers.
#Step 3 Create your own learning switch to connect your container
git clone -b release/helium-sr2 https://git.opendaylight.org/gerrit/p/openflowplugin.git openflowplugin cd openflowplugin/samples/learning-switch mvn clean install -DskipTests
create a ping between your two docker containers.
It will not work.
in Karak console, install your learning switch.
install file://yourpath/openflowplugin/samples/learning-switch/target/learning-switch-0.0.5-Helium-SR2.jar start bundlenumber
Now ping should work. #Step 4 Build your own multi-tenant apps with a clear network isolation.
The goal in this task is to create a vswitch per tenant to clearly isolate your apps.
#Step 5 Use opendaylight to create routes between distributed container
Coming soon …
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