96 lines
3.0 KiB
Go
96 lines
3.0 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package pod
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import (
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"k8s.io/kubernetes/pkg/features"
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"k8s.io/kubernetes/pkg/kubelet/types"
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apiv1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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resourcehelper "k8s.io/component-helpers/resource"
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)
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const (
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// DaemonSetPodAnnotationKey - annotation use to informs the cluster-autoscaler controller when a pod needs to be considered as a Daemonset's Pod.
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DaemonSetPodAnnotationKey = "cluster-autoscaler.kubernetes.io/daemonset-pod"
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)
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// IsDaemonSetPod returns true if the Pod should be considered as Pod managed by a DaemonSet
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func IsDaemonSetPod(pod *apiv1.Pod) bool {
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controllerRef := metav1.GetControllerOf(pod)
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if controllerRef != nil && controllerRef.Kind == "DaemonSet" {
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return true
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}
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return pod.Annotations[DaemonSetPodAnnotationKey] == "true"
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}
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// IsMirrorPod checks whether the pod is a mirror pod.
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func IsMirrorPod(pod *apiv1.Pod) bool {
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if pod.ObjectMeta.Annotations == nil {
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return false
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}
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_, found := pod.ObjectMeta.Annotations[types.ConfigMirrorAnnotationKey]
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return found
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}
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// IsStaticPod returns true if the pod is a static pod.
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func IsStaticPod(pod *apiv1.Pod) bool {
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if pod.Annotations != nil {
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if source, ok := pod.Annotations[types.ConfigSourceAnnotationKey]; ok == true {
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return source != types.ApiserverSource
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}
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}
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return false
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}
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// FilterRecreatablePods filters pods that will be recreated by their controllers
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func FilterRecreatablePods(pods []*apiv1.Pod) []*apiv1.Pod {
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filtered := make([]*apiv1.Pod, 0, len(pods))
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for _, p := range pods {
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if IsStaticPod(p) || IsMirrorPod(p) || IsDaemonSetPod(p) {
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continue
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}
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filtered = append(filtered, p)
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}
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return filtered
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}
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// ClearPodNodeNames removes node name from pods
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func ClearPodNodeNames(pods []*apiv1.Pod) []*apiv1.Pod {
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newPods := make([]*apiv1.Pod, 0, len(pods))
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for _, podPtr := range pods {
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newPod := *podPtr
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newPod.Spec.NodeName = ""
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newPods = append(newPods, &newPod)
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}
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return newPods
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}
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// PodRequests calculates Pod requests using a common resource helper shared with the scheduler
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func PodRequests(pod *apiv1.Pod) apiv1.ResourceList {
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inPlacePodVerticalScalingEnabled := utilfeature.DefaultFeatureGate.Enabled(features.InPlacePodVerticalScaling)
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podLevelResourcesEnabled := utilfeature.DefaultFeatureGate.Enabled(features.PodLevelResources)
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return resourcehelper.PodRequests(pod, resourcehelper.PodResourcesOptions{
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UseStatusResources: inPlacePodVerticalScalingEnabled,
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SkipPodLevelResources: !podLevelResourcesEnabled,
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})
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}
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