mirror of https://github.com/k3s-io/k3s
61 lines
2.0 KiB
Markdown
61 lines
2.0 KiB
Markdown
[](https://travis-ci.org/containerd/go-cni)
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# go-cni
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A generic CNI library to provide APIs for CNI plugin interactions. The library provides APIs to:
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- Load CNI network config from different sources
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- Setup networks for container namespace
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- Remove networks from container namespace
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- Query status of CNI network plugin initialization
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go-cni aims to support plugins that implement [Container Network Interface](https://github.com/containernetworking/cni)
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## Usage
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```go
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func main() {
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id := "123456"
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netns := "/proc/9999/ns/net"
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defaultIfName := "eth0"
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// Initialize library
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l = gocni.New(gocni.WithMinNetworkCount(2),
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gocni.WithPluginConfDir("/etc/mycni/net.d"),
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gocni.WithPluginDir([]string{"/opt/mycni/bin", "/opt/cni/bin"}),
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gocni.WithDefaultIfName(defaultIfName))
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// Load the cni configuration
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err:= l.Load(gocni.WithLoNetwork, gocni.WithDefaultConf)
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if err != nil{
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log.Errorf("failed to load cni configuration: %v", err)
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return
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}
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// Setup network for namespace.
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labels := map[string]string{
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"K8S_POD_NAMESPACE": "namespace1",
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"K8S_POD_NAME": "pod1",
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"K8S_POD_INFRA_CONTAINER_ID": id,
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}
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result, err := l.Setup(id, netns, gocni.WithLabels(labels))
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if err != nil {
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log.Errorf("failed to setup network for namespace %q: %v",id, err)
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return
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}
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// Get IP of the default interface
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IP := result.Interfaces[defaultIfName].IPConfigs[0].IP.String()
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fmt.Printf("IP of the default interface %s:%s", defaultIfName, IP)
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}
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```
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## Project details
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The go-cni is a containerd sub-project, licensed under the [Apache 2.0 license](./LICENSE).
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As a containerd sub-project, you will find the:
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* [Project governance](https://github.com/containerd/project/blob/master/GOVERNANCE.md),
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* [Maintainers](https://github.com/containerd/project/blob/master/MAINTAINERS),
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* and [Contributing guidelines](https://github.com/containerd/project/blob/master/CONTRIBUTING.md)
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information in our [`containerd/project`](https://github.com/containerd/project) repository.
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