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kubectl: take pod overhead into account

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Signed-off-by: Eric Ernst <eric.ernst@intel.com>
This commit is contained in:
Eric Ernst 2019-08-25 23:55:56 -07:00
parent a76d7fdf64
commit 7922d73f98
1 changed files with 15 additions and 1 deletions
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16
staging/src/k8s.io/kubectl/pkg/util/resource/resource.go
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@ -28,7 +28,9 @@ import (
)
// PodRequestsAndLimits returns a dictionary of all defined resources summed up for all
// containers of the pod.
// containers of the pod. If pod overhead is non-nil, the pod overhead is added to the
// total container resource requests and to the total container limits which have a
// non-zero quantity.
func PodRequestsAndLimits(pod *corev1.Pod) (reqs, limits corev1.ResourceList) {
reqs, limits = corev1.ResourceList{}, corev1.ResourceList{}
for _, container := range pod.Spec.Containers {
@ -40,6 +42,18 @@ func PodRequestsAndLimits(pod *corev1.Pod) (reqs, limits corev1.ResourceList) {
maxResourceList(reqs, container.Resources.Requests)
maxResourceList(limits, container.Resources.Limits)
}
// Add overhead for running a pod to the sum of requests and to non-zero limits:
if pod.Spec.Overhead != nil {
addResourceList(reqs, pod.Spec.Overhead)
for name, quantity := range pod.Spec.Overhead {
if value, ok := limits[name]; ok && !value.IsZero() {
value.Add(quantity)
limits[name] = value
}
}
}
return
}