Code change:
Kubelet now only reports ContainerStatus. PodStatus / PodCondition is observed at master side based on a set of ContainerStatus. There is no other way to get PodIP except net container for master side. This is very confusion to the end user, , , ... Now we are finalizing on v1beta3 API, including PodStatus & ContainerStatus. We can make net container completely invisible to the end users by finishing the following steps: 1) Expose network related errors at API level 2) Generate PodStaus directly from Kubelet
3) once PodStatus generated by kubelet, PodIP can be removed from ContainerStatus.
I think reporting PodStatus rather than just container status is most important. How hard is that?
Used to be hard since there are many dependencies when I first report Status back. Now it is totally feasible. I already started to write PRs for this. :-)
One more PR required to close this one.

Related discussion:
text: return nil, false } <ins> // getPhase returns the phase of a pod given its container info. func getPhase(spec *api.PodSpec, info api.PodInfo) api.PodPhase { if info == nil { return api.PodPending } running := 0 waiting := 0 stopped := 0 failed := 0 succeeded := 0 unknown := 0 for _, container := range spec.Containers { if containerStatus, ok := info[container.Name]; ok { if containerStatus.State.Running != nil { running++ } else if containerStatus.State.Termination != nil { stopped++ if containerStatus.State.Termination.ExitCode == 0 { succeeded++ } else { failed++ } } else if containerStatus.State.Waiting != nil { waiting++ } else { unknown++ } } else { unknown++ } } switch { case waiting > 0: // One or more containers has not been started return api.PodPending case running > 0 && unknown == 0: // All containers have been started, and at least // one container is running return api.PodRunning case running == 0 && stopped > 0 && unknown == 0: // All containers are terminated if spec.RestartPolicy.Always != nil { // All containers are in the process of restarting return api.PodRunning } if stopped == succeeded { // RestartPolicy is not Always, and all // containers are terminated in success return api.PodSucceeded } if spec.RestartPolicy.Never != nil { // RestartPolicy is Never, and all containers are // terminated with at least one in failure return api.PodFailed } // RestartPolicy is OnFailure, and at least one in failure // and in the process of restarting return api.PodRunning default: return api.PodPending } } </ins> // GetPodStatus returns information from Docker about the containers in a pod func (kl *Kubelet) GetPodStatus(podFullName string, uid types.UID) (api.PodStatus, error) { <del> var manifest api.PodSpec </del> <ins> var spec api.PodSpec </ins> for _, pod := range kl.pods { if GetPodFullName(&pod) == podFullName { <del> manifest = pod.Spec </del> <ins> spec = pod.Spec </ins> break } } <del> info, err := dockertools.GetDockerPodInfo(kl.dockerClient, manifest, podFullName, uid) </del> <ins> info, err := dockertools.GetDockerPodInfo(kl.dockerClient, spec, podFullName, uid) </ins> <del> // TODO(dchen1107): Determine PodPhase here </del> var podStatus api.PodStatus <ins> podStatus.Phase = getPhase(&spec, info) netContainerInfo, found := info[dockertools.PodInfraContainerName] if found { podStatus.PodIP = netContainerInfo.PodIP } // TODO(dchen1107): Change Info to list from map </ins> podStatus.Info = info return podStatus, err