Exemple #1
0
// generateEvents is a helper function that generates some container
// life cycle events for containers in a pod.
func (r *runtime) generateEvents(runtimePod *kubecontainer.Pod, reason string, failure error) {
	// Set up container references.
	for _, c := range runtimePod.Containers {
		containerID := string(c.ID)
		id, err := parseContainerID(containerID)
		if err != nil {
			glog.Warningf("Invalid container ID %q", containerID)
			continue
		}

		ref, ok := r.containerRefManager.GetRef(containerID)
		if !ok {
			glog.Warningf("No ref for container %q", containerID)
			continue
		}

		// Note that 'rkt id' is the pod id.
		uuid := util.ShortenString(id.uuid, 8)
		switch reason {
		case "Created":
			r.recorder.Eventf(ref, "Created", "Created with rkt id %v", uuid)
		case "Started":
			r.recorder.Eventf(ref, "Started", "Started with rkt id %v", uuid)
		case "Failed":
			r.recorder.Eventf(ref, "Failed", "Failed to start with rkt id %v with error %v", uuid, failure)
		case "Killing":
			r.recorder.Eventf(ref, "Killing", "Killing with rkt id %v", uuid)
		default:
			glog.Errorf("rkt: Unexpected event %q", reason)
		}
	}
	return
}
Exemple #2
0
// Recycler provides methods to reclaim the volume resource.
// A NFS volume is recycled by scheduling a pod to run "rm -rf" on the contents of the volume.
// Recycle blocks until the pod has completed or any error occurs.
// The scrubber pod's is expected to succeed within 5 minutes else an error will be returned
func (r *nfsRecycler) Recycle() error {
	timeout := int64(300) // 5 minutes
	pod := &api.Pod{
		ObjectMeta: api.ObjectMeta{
			GenerateName: "pv-scrubber-" + util.ShortenString(r.name, 44) + "-",
			Namespace:    api.NamespaceDefault,
		},
		Spec: api.PodSpec{
			ActiveDeadlineSeconds: &timeout,
			RestartPolicy:         api.RestartPolicyNever,
			Volumes: []api.Volume{
				{
					Name: "vol",
					VolumeSource: api.VolumeSource{
						NFS: &api.NFSVolumeSource{
							Server: r.server,
							Path:   r.path,
						},
					},
				},
			},
			Containers: []api.Container{
				{
					Name:  "scrubber",
					Image: "gcr.io/google_containers/busybox",
					// delete the contents of the volume, but not the directory itself
					Command: []string{"/bin/sh"},
					// the scrubber:
					//		1. validates the /scrub directory exists
					// 		2. creates a text file to be scrubbed
					//		3. performs rm -rf on the directory
					//		4. tests to see if the directory is empty
					// the pod fails if the error code is returned
					Args: []string{"-c", "test -e /scrub && echo $(date) > /scrub/trash.txt && rm -rf /scrub/* && test -z \"$(ls -A /scrub)\" || exit 1"},
					VolumeMounts: []api.VolumeMount{
						{
							Name:      "vol",
							MountPath: "/scrub",
						},
					},
				},
			},
		},
	}
	return volume.ScrubPodVolumeAndWatchUntilCompletion(pod, r.host.GetKubeClient())
}
Exemple #3
0
// Recycler provides methods to reclaim the volume resource.
// A NFS volume is recycled by scheduling a pod to run "rm -rf" on the contents of the volume.
// Recycle blocks until the pod has completed or any error occurs.
// The scrubber pod's is expected to succeed within 5 minutes else an error will be returned.
func (r *nfsRecycler) Recycle() error {
	// TODO:  remove the duplication between this Recycle func and the one in host_path.go
	pod := &api.Pod{
		ObjectMeta: api.ObjectMeta{
			GenerateName: "pv-scrubber-" + util.ShortenString(r.name, 44) + "-",
			Namespace:    api.NamespaceDefault,
		},
		Spec: api.PodSpec{
			ActiveDeadlineSeconds: &r.recyclableConfig.Timeout,
			RestartPolicy:         api.RestartPolicyNever,
			Volumes: []api.Volume{
				{
					Name: "vol",
					VolumeSource: api.VolumeSource{
						NFS: &api.NFSVolumeSource{
							Server: r.server,
							Path:   r.path,
						},
					},
				},
			},
			Containers: []api.Container{
				{
					Name:    "scrubber",
					Image:   r.recyclableConfig.ImageName,
					Command: r.recyclableConfig.Command,
					Args:    r.recyclableConfig.Args,
					VolumeMounts: []api.VolumeMount{
						{
							Name:      "vol",
							MountPath: "/scrub",
						},
					},
				},
			},
		},
	}
	return volume.ScrubPodVolumeAndWatchUntilCompletion(pod, r.host.GetKubeClient())
}