mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-26 05:14:13 +01:00
75 lines
2.8 KiB
Go
75 lines
2.8 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 strategies
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import (
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"github.com/golang/glog"
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"github.com/kubernetes-incubator/descheduler/cmd/descheduler/app/options"
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"github.com/kubernetes-incubator/descheduler/pkg/api"
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"github.com/kubernetes-incubator/descheduler/pkg/descheduler/evictions"
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nodeutil "github.com/kubernetes-incubator/descheduler/pkg/descheduler/node"
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podutil "github.com/kubernetes-incubator/descheduler/pkg/descheduler/pod"
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"k8s.io/api/core/v1"
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)
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func RemovePodsViolatingNodeAffinity(ds *options.DeschedulerServer, strategy api.DeschedulerStrategy, evictionPolicyGroupVersion string, nodes []*v1.Node, nodePodCount nodePodEvictedCount) {
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evictionCount := removePodsViolatingNodeAffinityCount(ds, strategy, evictionPolicyGroupVersion, nodes, nodePodCount, ds.MaxNoOfPodsToEvictPerNode)
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glog.V(1).Infof("Evicted %v pods", evictionCount)
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}
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func removePodsViolatingNodeAffinityCount(ds *options.DeschedulerServer, strategy api.DeschedulerStrategy, evictionPolicyGroupVersion string, nodes []*v1.Node, nodepodCount nodePodEvictedCount, maxPodsToEvict int) int {
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evictedPodCount := 0
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if !strategy.Enabled {
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return evictedPodCount
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}
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for _, nodeAffinity := range strategy.Params.NodeAffinityType {
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glog.V(2).Infof("Executing for nodeAffinityType: %v", nodeAffinity)
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switch nodeAffinity {
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case "requiredDuringSchedulingIgnoredDuringExecution":
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for _, node := range nodes {
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glog.V(1).Infof("Processing node: %#v\n", node.Name)
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pods, err := podutil.ListEvictablePodsOnNode(ds.Client, node)
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if err != nil {
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glog.Errorf("failed to get pods from %v: %v", node.Name, err)
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}
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for _, pod := range pods {
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if nodepodCount[node]+1 > maxPodsToEvict {
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break
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}
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if pod.Spec.Affinity != nil && pod.Spec.Affinity.NodeAffinity != nil && pod.Spec.Affinity.NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution != nil {
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if !nodeutil.PodFitsCurrentNode(pod, node) && nodeutil.PodFitsAnyNode(pod, nodes) {
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glog.V(1).Infof("Evicting pod: %v", pod.Name)
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evictions.EvictPod(ds.Client, pod, evictionPolicyGroupVersion, false)
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nodepodCount[node]++
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}
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}
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}
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evictedPodCount += nodepodCount[node]
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}
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default:
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glog.Errorf("invalid nodeAffinityType: %v", nodeAffinity)
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return evictedPodCount
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}
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}
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return evictedPodCount
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}
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