Libnetwork provides a native Go implementation for connecting containers
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.
Please refer to the design for more information.
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.
funcmain() {
ifreexec.Init() {
return
}
// Select and configure the network drivernetworkType:="bridge"// Create a new controller instancedriverOptions:= options.Generic{}
genericOption:=make(map[string]interface{})
genericOption[netlabel.GenericData] =driverOptionscontroller, err:=libnetwork.New(config.OptionDriverConfig(networkType, genericOption))
iferr!=nil {
log.Fatalf("libnetwork.New: %s", err)
}
// Create a network for containers to join.// NewNetwork accepts Variadic optional arguments that libnetwork and Drivers can use.network, err:=controller.NewNetwork(networkType, "network1", "")
iferr!=nil {
log.Fatalf("controller.NewNetwork: %s", err)
}
// For each new container: allocate IP and interfaces. The returned network// settings will be used for container infos (inspect and such), as well as// iptables rules for port publishing. This info is contained or accessible// from the returned endpoint.ep, err:=network.CreateEndpoint("Endpoint1")
iferr!=nil {
log.Fatalf("network.CreateEndpoint: %s", err)
}
// Create the sandbox for the container.// NewSandbox accepts Variadic optional arguments which libnetwork can use.sbx, err:=controller.NewSandbox("container1",
libnetwork.OptionHostname("test"),
libnetwork.OptionDomainname("docker.io"))
iferr!=nil {
log.Fatalf("controller.NewSandbox: %s", err)
}
// A sandbox can join the endpoint via the join api.err=ep.Join(sbx)
iferr!=nil {
log.Fatalf("ep.Join: %s", err)
}
// libnetwork client can check the endpoint's operational data via the Info() APIepInfo, err:=ep.DriverInfo()
iferr!=nil {
log.Fatalf("ep.DriverInfo: %s", err)
}
macAddress, ok:=epInfo[netlabel.MacAddress]
if!ok {
log.Fatalf("failed to get mac address from endpoint info")
}
fmt.Printf("Joined endpoint %s (%s) to sandbox %s (%s)\n", ep.Name(), macAddress, sbx.ContainerID(), sbx.Key())
}Please refer to roadmap for more information.
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Code and documentation copyright 2015 Docker, inc. Code released under the Apache 2.0 license. Docs released under Creative commons.