Пример #1
0
func (plugin *cniNetworkPlugin) TearDownPod(namespace string, name string, id kubecontainer.DockerID) error {
	runtime, ok := plugin.host.GetRuntime().(*dockertools.DockerManager)
	if !ok {
		return fmt.Errorf("CNI execution called on non-docker runtime")
	}
	netns, err := runtime.GetNetNS(id.ContainerID())
	if err != nil {
		return err
	}

	return plugin.defaultNetwork.deleteFromNetwork(name, namespace, id.ContainerID(), netns)
}
Пример #2
0
func (plugin *cniNetworkPlugin) SetUpPod(namespace string, name string, id kubecontainer.DockerID) error {
	runtime, ok := plugin.host.GetRuntime().(*dockertools.DockerManager)
	if !ok {
		return fmt.Errorf("CNI execution called on non-docker runtime")
	}
	netns, err := runtime.GetNetNS(id.ContainerID())
	if err != nil {
		return err
	}

	_, err = plugin.defaultNetwork.addToNetwork(name, namespace, id.ContainerID(), netns)
	if err != nil {
		glog.Errorf("Error while adding to cni network: %s", err)
		return err
	}

	return err
}
Пример #3
0
func (plugin *kubenetNetworkPlugin) SetUpPod(namespace string, name string, id kubecontainer.DockerID) error {
	// Can't set up pods if we don't have a PodCIDR yet
	if plugin.netConfig == nil {
		return fmt.Errorf("Kubenet needs a PodCIDR to set up pods")
	}

	runtime, ok := plugin.host.GetRuntime().(*dockertools.DockerManager)
	if !ok {
		return fmt.Errorf("Kubenet execution called on non-docker runtime")
	}
	netnsPath, err := runtime.GetNetNS(id.ContainerID())
	if err != nil {
		return err
	}

	rt := buildCNIRuntimeConf(name, namespace, id.ContainerID(), netnsPath)
	if err != nil {
		return fmt.Errorf("Error building CNI config: %v", err)
	}

	glog.V(3).Infof("Calling cni plugins to add container to network with cni runtime: %+v", rt)
	res, err := plugin.cniConfig.AddNetwork(plugin.netConfig, rt)
	if err != nil {
		return fmt.Errorf("Error adding container to network: %v", err)
	}
	if res.IP4 == nil {
		return fmt.Errorf("CNI plugin reported no IPv4 address for container %v.", id)
	}

	plugin.podCIDRs[id] = res.IP4.IP.String()

	// The first SetUpPod call creates the bridge; ensure shaping is enabled
	if plugin.shaper == nil {
		plugin.shaper = bandwidth.NewTCShaper(BridgeName)
		if plugin.shaper == nil {
			return fmt.Errorf("Failed to create bandwidth shaper!")
		}
		plugin.shaper.ReconcileInterface()
	}

	// TODO: get ingress/egress from Pod.Spec and add pod CIDR to shaper

	return nil
}
Пример #4
0
func (plugin *kubenetNetworkPlugin) TearDownPod(namespace string, name string, id kubecontainer.DockerID) error {
	if plugin.netConfig == nil {
		return fmt.Errorf("Kubenet needs a PodCIDR to tear down pods")
	}

	runtime, ok := plugin.host.GetRuntime().(*dockertools.DockerManager)
	if !ok {
		return fmt.Errorf("Kubenet execution called on non-docker runtime")
	}
	netnsPath, err := runtime.GetNetNS(id.ContainerID())
	if err != nil {
		return err
	}

	rt := buildCNIRuntimeConf(name, namespace, id.ContainerID(), netnsPath)
	if err != nil {
		return fmt.Errorf("Error building CNI config: %v", err)
	}

	// no cached CIDR is Ok during teardown
	if cidr, ok := plugin.podCIDRs[id]; ok {
		glog.V(5).Infof("Removing pod CIDR %s from shaper", cidr)
		// shaper wants /32
		if addr, _, err := net.ParseCIDR(cidr); err != nil {
			if err = plugin.shaper.Reset(fmt.Sprintf("%s/32", addr.String())); err != nil {
				glog.Warningf("Failed to remove pod CIDR %s from shaper: %v", cidr, err)
			}
		}
	}
	delete(plugin.podCIDRs, id)

	glog.V(3).Infof("Calling cni plugins to remove container from network with cni runtime: %+v", rt)
	if err := plugin.cniConfig.DelNetwork(plugin.netConfig, rt); err != nil {
		return fmt.Errorf("Error removing container from network: %v", err)
	}

	return nil
}