Libnetwork提供一个原生Go实现的容器连接，是容器的网络。libnetwork的目标是定义一个健壮的容器网络模型（ContainerNetworkModel），提供一个一致的编程接口和应用程序的网络抽象。
Libnetwork一开始的代码只是libcontainer和DockerEngine中网络部分代码的合并，Docker官方的愿景是希望libnetwork能像libcontainer一样，成为一个多平台的容器网络基础包。
受之前的一个GitHubissue启发，libnetwork引入了容器网络模型（CNM）的概念，CNM定义了三个新的术语，分别是网络沙箱、Endpoint、Network。网络沙箱指的是在每一个容器中，将会有一个隔离的用于网络配置的环境。Endpoint是一个网络接口，可用于某一网络上的交流。Network是一个唯一的且可识别的Endpoint组。
接下来，Docker公司将会把libnetwork集成到DockerEngine，并在DockerCLI中使用新的网络命令。具体的项目路线图读者可以参考GitHub。
注意：libnetwork项目正在大力开发中，还不适合日常使用！
使用示例：
// Create a new controller instance controller := libnetwork.New() // Select and configure the network driver networkType := "bridge" driverOptions := options.Generic{} genericOption := make(map[string]interface{}) genericOption[options.GenericData] = driverOptions err := controller.ConfigureNetworkDriver(networkType, genericOption) if err != nil { return } // Create a network for containers to join. // NewNetwork accepts Variadic optional arguments that libnetwork and Drivers can make of network, err := controller.NewNetwork(networkType, "network1") if err != nil { return } // 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") if err != nil { return } // A container can join the endpoint by providing the container ID to the join // api which returns the sandbox key which can be used to access the sandbox // created for the container during join. // Join acceps Variadic arguments which will be made use of by libnetwork and Drivers _, err = ep.Join("container1", libnetwork.JoinOptionHostname("test"), libnetwork.JoinOptionDomainname("docker.io")) if err != nil { return }
评论