code: func (kl *Kubelet) isPodRunning(pod *v1.Pod, status *kubecontainer.PodStatus) bool {
  	for _, c := range pod.Spec.Containers {
  		cs := status.FindContainerStatusByName(c.Name)
  		if cs == nil || cs.State != kubecontainer.ContainerStateRunning {
  			klog.Infof("Container %q for pod %q not running", c.Name, format.Pod(pod))
  			return false
  		}
  	}
  	return true
  }
docs: // isPodRunning returns true if all containers of a manifest are running.