This document describes Docker Engine network driver plugins generally available in Docker Engine. To view information on plugins managed by Docker Engine, refer to Docker Engine plugin system.
Docker Engine network plugins enable Engine deployments to be extended to support a wide range of networking technologies, such as VXLAN, IPVLAN, MACVLAN or something completely different. Network driver plugins are supported via the LibNetwork project. Each plugin is implemented as a “remote driver” for LibNetwork, which shares plugin infrastructure with Engine. Effectively, network driver plugins are activated in the same way as other plugins, and use the same kind of protocol.
Docker 1.12 adds support for cluster management and orchestration called swarm mode. Docker Engine running in swarm mode currently only supports the built-in overlay driver for networking. Therefore existing networking plugins will not work in swarm mode.
When you run Docker Engine outside of swarm mode, all networking plugins that worked in Docker 1.11 will continue to function normally. They do not require any modification.
The means of installing and running a network driver plugin depend on the particular plugin. So, be sure to install your plugin according to the instructions obtained from the plugin developer.
Once running however, network driver plugins are used just like the built-in network drivers: by being mentioned as a driver in network-oriented Docker commands. For example,
$ docker network create --driver weave mynet
Some network driver plugins are listed in plugins
mynet network is now owned by
weave, so subsequent commands
referring to that network will be sent to the plugin,
$ docker run --network=mynet busybox top
Network plugins implement the Docker plugin API and the network plugin protocol
The network driver protocol, in addition to the plugin activation call, is documented as part of libnetwork: https://github.com/docker/libnetwork/blob/master/docs/remote.md.
To interact with the Docker maintainers and other interested users, see the IRC channel
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