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85 lines
3.6 KiB
Markdown
85 lines
3.6 KiB
Markdown
# libnetwork - networking for containers
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[](https://circleci.com/gh/docker/libnetwork/tree/master) [](https://coveralls.io/r/docker/libnetwork) [](https://godoc.org/github.com/docker/libnetwork)
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Libnetwork provides a native Go implementation for connecting containers
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The goal of libnetwork is to deliver a robust Container Network Model that provides a consistent programming interface and the required network abstractions for applications.
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**NOTE**: libnetwork project is under heavy development and is not ready for general use.
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#### Design
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Please refer to the [design](docs/design.md) for more information.
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#### Using libnetwork
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There are many networking solutions available to suit a broad range of use-cases. libnetwork uses a driver / plugin model to support all of these solutions while abstracting the complexity of the driver implementations by exposing a simple and consistent Network Model to users.
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```go
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// Create a new controller instance
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controller := libnetwork.New()
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// Select and configure the network driver
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networkType := "bridge"
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driverOptions := options.Generic{}
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genericOption := make(map[string]interface{})
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genericOption[netlabel.GenericData] = driverOptions
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err := controller.ConfigureNetworkDriver(networkType, genericOption)
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if err != nil {
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return
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}
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// Create a network for containers to join.
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// NewNetwork accepts Variadic optional arguments that libnetwork and Drivers can make of
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network, err := controller.NewNetwork(networkType, "network1")
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if err != nil {
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return
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}
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// For each new container: allocate IP and interfaces. The returned network
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// settings will be used for container infos (inspect and such), as well as
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// iptables rules for port publishing. This info is contained or accessible
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// from the returned endpoint.
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ep, err := network.CreateEndpoint("Endpoint1")
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if err != nil {
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return
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}
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// A container can join the endpoint by providing the container ID to the join
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// api.
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// Join accepts Variadic arguments which will be made use of by libnetwork and Drivers
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err = ep.Join("container1",
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libnetwork.JoinOptionHostname("test"),
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libnetwork.JoinOptionDomainname("docker.io"))
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if err != nil {
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return
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}
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// libnetwork client can check the endpoint's operational data via the Info() API
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epInfo, err := ep.DriverInfo()
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mapData, ok := epInfo[netlabel.PortMap]
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if ok {
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portMapping, ok := mapData.([]netutils.PortBinding)
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if ok {
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fmt.Printf("Current port mapping for endpoint %s: %v", ep.Name(), portMapping)
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}
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}
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```
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#### Current Status
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Please watch this space for updates on the progress.
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Currently libnetwork is nothing more than an attempt to modularize the Docker platform's networking subsystem by moving it into libnetwork as a library.
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## Future
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Please refer to [roadmap](ROADMAP.md) for more information.
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## Contributing
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Want to hack on libnetwork? [Docker's contributions guidelines](https://github.com/docker/docker/blob/master/CONTRIBUTING.md) apply.
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## Copyright and license
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Code and documentation copyright 2015 Docker, inc. Code released under the Apache 2.0 license. Docs released under Creative commons.
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