// ProbeNetworkPlugins collects all compiled-in plugins
func ProbeNetworkPlugins(pluginDir string) []network.NetworkPlugin {
allPlugins := []network.NetworkPlugin{}
// for each existing plugin, add to the list
allPlugins = append(allPlugins, exec.ProbeNetworkPlugins(pluginDir)...)
allPlugins = append(allPlugins, cni.ProbeNetworkPlugins(pluginDir)...)
return allPlugins
}
// This kubelet network plugin shim only exists to grab the knetwork.Host
// Everything else is simply proxied directly to the kubenet CNI driver.
func (node *OsdnNode) Init(host knetwork.Host, hairpinMode componentconfig.HairpinMode, nonMasqueradeCIDR string, mtu int) error {
plugins := kcni.ProbeNetworkPlugins(kcni.DefaultNetDir, kcni.DefaultCNIDir)
if len(plugins) == 0 {
return fmt.Errorf("openshift-sdn CNI network plugin config could not be found in %v", kcni.DefaultNetDir)
} else if len(plugins) > 1 {
return fmt.Errorf("multiple CNI network plugins found; only one can be used")
}
node.host = host
node.kubeletCniPlugin = plugins[0]
return node.kubeletCniPlugin.Init(host, hairpinMode, nonMasqueradeCIDR, mtu)
}
// ProbeNetworkPlugins collects all compiled-in plugins
func ProbeNetworkPlugins(pluginDir, cniConfDir, cniBinDir string) []network.NetworkPlugin {
allPlugins := []network.NetworkPlugin{}
// for backwards-compat, allow pluginDir as a source of CNI config files
if cniConfDir == "" {
cniConfDir = pluginDir
}
// for each existing plugin, add to the list
allPlugins = append(allPlugins, cni.ProbeNetworkPlugins(cniConfDir, cniBinDir)...)
allPlugins = append(allPlugins, kubenet.NewPlugin(pluginDir))
return allPlugins
}
// This kubelet network plugin shim only exists to grab the knetwork.Host
// Everything else is simply proxied directly to the kubenet CNI driver.
func (node *OsdnNode) Init(host knetwork.Host, hairpinMode componentconfig.HairpinMode, nonMasqueradeCIDR string, mtu int) error {
plugins := kcni.ProbeNetworkPlugins(kcni.DefaultNetDir, kcni.DefaultCNIDir)
if len(plugins) == 0 {
return fmt.Errorf("openshift-sdn CNI network plugin config could not be found in %v", kcni.DefaultNetDir)
} else if len(plugins) > 1 {
return fmt.Errorf("multiple CNI network plugins found; only one can be used")
}
node.host = host
node.kubeletCniPlugin = plugins[0]
err := node.kubeletCniPlugin.Init(host, hairpinMode, nonMasqueradeCIDR, mtu)
// Let initial pod updates happen if they need to
glog.V(5).Infof("openshift-sdn CNI plugin initialized")
close(node.kubeletInitReady)
return err
}
// NOTE: Anything passed to DockerService should be eventually handled in another way when we switch to running the shim as a different process.
func NewDockerService(client dockertools.DockerInterface, seccompProfileRoot string, podSandboxImage string, streamingConfig *streaming.Config, pluginSettings *NetworkPluginSettings, cgroupsName string) (DockerService, error) {
c := dockertools.NewInstrumentedDockerInterface(client)
ds := &dockerService{
seccompProfileRoot: seccompProfileRoot,
client: c,
os: kubecontainer.RealOS{},
podSandboxImage: podSandboxImage,
streamingRuntime: &streamingRuntime{
client: client,
// Only the native exec handling is supported for now.
// TODO(#35747) - Either deprecate nsenter exec handling, or add support for it here.
execHandler: &dockertools.NativeExecHandler{},
},
containerManager: cm.NewContainerManager(cgroupsName, client),
}
if streamingConfig != nil {
var err error
ds.streamingServer, err = streaming.NewServer(*streamingConfig, ds.streamingRuntime)
if err != nil {
return nil, err
}
}
// dockershim currently only supports CNI plugins.
cniPlugins := cni.ProbeNetworkPlugins(pluginSettings.PluginConfDir, pluginSettings.PluginBinDir)
cniPlugins = append(cniPlugins, kubenet.NewPlugin(pluginSettings.PluginBinDir))
netHost := &dockerNetworkHost{
pluginSettings.LegacyRuntimeHost,
&namespaceGetter{ds},
}
plug, err := network.InitNetworkPlugin(cniPlugins, pluginSettings.PluginName, netHost, pluginSettings.HairpinMode, pluginSettings.NonMasqueradeCIDR, pluginSettings.MTU)
if err != nil {
return nil, fmt.Errorf("didn't find compatible CNI plugin with given settings %+v: %v", pluginSettings, err)
}
ds.networkPlugin = plug
glog.Infof("Docker cri networking managed by %v", plug.Name())
return ds, nil
}