keldaio/ovs repository overview

⁠Open vSwitch

Containerized versions of Open vSwitch built originally for use by Kelda⁠. Despite their original intent, there is nothing Kelda specific about them, thus they should be generally useful.

⁠Using

The keldaio/ovs container can run ovs-vswitchd, ovsdb-server, ovn-northd, and ovn-controller. It chooses which flavor to boot based on a command line argument (examples below).

The containers have several initialization requirements that make running them slightly different than typical docker containers. The most important of which is the necessity that all containers run on the host's network stack. For example, the proper way to boot ovsdb-server, the simplest of the containers, is as follows:

docker run -itd --net=host --name=ovsdb-server keldaio/ovs ovsdb-server

All of the other flavors require several volumes containing the OVS database, logs, and configuration files. These must be mounted from a running ovsdb-server container as follows:

docker run -itd --net=host --volumes-from=ovsdb-server keldaio/ovs ovn-northd

docker run -itd --net=host --volumes-from=ovsdb-server keldaio/ovs ovn-controller

Finally, Open vSwitch needs to interact with the OVS kernel module in the host, and therefore must be run in privileged mode.

docker run -itd --net=host --volumes-from=ovsdb-server --privileged keldaio/ovs ovs-vswitchd