mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-26 05:14:13 +01:00
274 lines
13 KiB
Go
274 lines
13 KiB
Go
/*
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Copyright 2022 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 descheduler
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import (
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"context"
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v1 "k8s.io/api/core/v1"
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"k8s.io/klog/v2"
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"sigs.k8s.io/descheduler/pkg/api"
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"sigs.k8s.io/descheduler/pkg/apis/componentconfig"
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"sigs.k8s.io/descheduler/pkg/apis/componentconfig/validation"
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"sigs.k8s.io/descheduler/pkg/framework"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/nodeutilization"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/podlifetime"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/removeduplicates"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/removefailedpods"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/removepodshavingtoomanyrestarts"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/removepodsviolatinginterpodantiaffinity"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/removepodsviolatingnodeaffinity"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/removepodsviolatingnodetaints"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/removepodsviolatingtopologyspreadconstraint"
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)
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// Once all strategies are migrated the arguments get read from the configuration file
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// without any wiring. Keeping the wiring here so the descheduler can still use
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// the v1alpha1 configuration during the strategy migration to plugins.
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var pluginsMap = map[string]func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl){
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"RemovePodsViolatingNodeTaints": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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args := &componentconfig.RemovePodsViolatingNodeTaintsArgs{
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Namespaces: params.Namespaces,
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LabelSelector: params.LabelSelector,
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IncludePreferNoSchedule: params.IncludePreferNoSchedule,
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ExcludedTaints: params.ExcludedTaints,
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}
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if err := validation.ValidateRemovePodsViolatingNodeTaintsArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", removepodsviolatingnodetaints.PluginName)
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return
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}
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pg, err := removepodsviolatingnodetaints.New(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", removepodsviolatingnodetaints.PluginName)
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return
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}
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status := pg.(framework.DeschedulePlugin).Deschedule(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", removepodsviolatingnodetaints.PluginName)
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}
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},
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"RemoveFailedPods": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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failedPodsParams := params.FailedPods
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if failedPodsParams == nil {
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failedPodsParams = &api.FailedPods{}
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}
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args := &removefailedpods.RemoveFailedPodsArgs{
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Namespaces: params.Namespaces,
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LabelSelector: params.LabelSelector,
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IncludingInitContainers: failedPodsParams.IncludingInitContainers,
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MinPodLifetimeSeconds: failedPodsParams.MinPodLifetimeSeconds,
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ExcludeOwnerKinds: failedPodsParams.ExcludeOwnerKinds,
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Reasons: failedPodsParams.Reasons,
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}
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if err := removefailedpods.ValidateRemoveFailedPodsArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", removefailedpods.PluginName)
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return
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}
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pg, err := removefailedpods.New(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", removefailedpods.PluginName)
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return
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}
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status := pg.(framework.DeschedulePlugin).Deschedule(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", removefailedpods.PluginName)
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}
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},
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"RemovePodsViolatingNodeAffinity": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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args := &componentconfig.RemovePodsViolatingNodeAffinityArgs{
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Namespaces: params.Namespaces,
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LabelSelector: params.LabelSelector,
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NodeAffinityType: params.NodeAffinityType,
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}
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if err := validation.ValidateRemovePodsViolatingNodeAffinityArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", removepodsviolatingnodeaffinity.PluginName)
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return
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}
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pg, err := removepodsviolatingnodeaffinity.New(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", removepodsviolatingnodeaffinity.PluginName)
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return
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}
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status := pg.(framework.DeschedulePlugin).Deschedule(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", removepodsviolatingnodeaffinity.PluginName)
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}
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},
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"RemovePodsViolatingInterPodAntiAffinity": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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args := &removepodsviolatinginterpodantiaffinity.RemovePodsViolatingInterPodAntiAffinityArgs{
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Namespaces: params.Namespaces,
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LabelSelector: params.LabelSelector,
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}
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if err := removepodsviolatinginterpodantiaffinity.ValidateRemovePodsViolatingInterPodAntiAffinityArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", removepodsviolatinginterpodantiaffinity.PluginName)
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return
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}
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pg, err := removepodsviolatinginterpodantiaffinity.New(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", removepodsviolatinginterpodantiaffinity.PluginName)
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return
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}
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status := pg.(framework.DeschedulePlugin).Deschedule(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", removepodsviolatinginterpodantiaffinity.PluginName)
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}
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},
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"RemovePodsHavingTooManyRestarts": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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tooManyRestartsParams := params.PodsHavingTooManyRestarts
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if tooManyRestartsParams == nil {
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tooManyRestartsParams = &api.PodsHavingTooManyRestarts{}
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}
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args := &removepodshavingtoomanyrestarts.RemovePodsHavingTooManyRestartsArgs{
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Namespaces: params.Namespaces,
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LabelSelector: params.LabelSelector,
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PodRestartThreshold: tooManyRestartsParams.PodRestartThreshold,
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IncludingInitContainers: tooManyRestartsParams.IncludingInitContainers,
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}
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if err := removepodshavingtoomanyrestarts.ValidateRemovePodsHavingTooManyRestartsArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", removepodshavingtoomanyrestarts.PluginName)
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return
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}
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pg, err := removepodshavingtoomanyrestarts.New(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", removepodshavingtoomanyrestarts.PluginName)
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return
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}
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status := pg.(framework.DeschedulePlugin).Deschedule(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", removepodshavingtoomanyrestarts.PluginName)
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}
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},
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"PodLifeTime": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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podLifeTimeParams := params.PodLifeTime
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if podLifeTimeParams == nil {
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podLifeTimeParams = &api.PodLifeTime{}
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}
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var states []string
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if podLifeTimeParams.PodStatusPhases != nil {
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states = append(states, podLifeTimeParams.PodStatusPhases...)
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}
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if podLifeTimeParams.States != nil {
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states = append(states, podLifeTimeParams.States...)
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}
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args := &podlifetime.PodLifeTimeArgs{
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Namespaces: params.Namespaces,
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LabelSelector: params.LabelSelector,
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MaxPodLifeTimeSeconds: podLifeTimeParams.MaxPodLifeTimeSeconds,
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States: states,
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}
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if err := podlifetime.ValidatePodLifeTimeArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", podlifetime.PluginName)
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return
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}
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pg, err := podlifetime.New(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", podlifetime.PluginName)
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return
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}
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status := pg.(framework.DeschedulePlugin).Deschedule(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", podlifetime.PluginName)
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}
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},
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"RemoveDuplicates": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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args := &removeduplicates.RemoveDuplicatesArgs{
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Namespaces: params.Namespaces,
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}
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if params.RemoveDuplicates != nil {
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args.ExcludeOwnerKinds = params.RemoveDuplicates.ExcludeOwnerKinds
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}
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if err := removeduplicates.ValidateRemoveDuplicatesArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", removeduplicates.PluginName)
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return
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}
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pg, err := removeduplicates.New(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", removeduplicates.PluginName)
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return
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}
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status := pg.(framework.BalancePlugin).Balance(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", removeduplicates.PluginName)
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}
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},
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"RemovePodsViolatingTopologySpreadConstraint": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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args := &componentconfig.RemovePodsViolatingTopologySpreadConstraintArgs{
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Namespaces: params.Namespaces,
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LabelSelector: params.LabelSelector,
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IncludeSoftConstraints: params.IncludePreferNoSchedule,
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}
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if err := validation.ValidateRemovePodsViolatingTopologySpreadConstraintArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", removepodsviolatingtopologyspreadconstraint.PluginName)
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return
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}
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pg, err := removepodsviolatingtopologyspreadconstraint.New(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", removepodsviolatingtopologyspreadconstraint.PluginName)
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return
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}
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status := pg.(framework.BalancePlugin).Balance(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", removepodsviolatingtopologyspreadconstraint.PluginName)
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}
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},
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"HighNodeUtilization": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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args := &nodeutilization.HighNodeUtilizationArgs{
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Thresholds: params.NodeResourceUtilizationThresholds.Thresholds,
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NumberOfNodes: params.NodeResourceUtilizationThresholds.NumberOfNodes,
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}
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if err := nodeutilization.ValidateHighNodeUtilizationArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", nodeutilization.HighNodeUtilizationPluginName)
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return
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}
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pg, err := nodeutilization.NewHighNodeUtilization(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", nodeutilization.HighNodeUtilizationPluginName)
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return
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}
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status := pg.(framework.BalancePlugin).Balance(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", nodeutilization.HighNodeUtilizationPluginName)
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}
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},
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"LowNodeUtilization": func(ctx context.Context, nodes []*v1.Node, params *api.StrategyParameters, handle *handleImpl) {
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args := &nodeutilization.LowNodeUtilizationArgs{
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Thresholds: params.NodeResourceUtilizationThresholds.Thresholds,
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TargetThresholds: params.NodeResourceUtilizationThresholds.TargetThresholds,
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UseDeviationThresholds: params.NodeResourceUtilizationThresholds.UseDeviationThresholds,
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NumberOfNodes: params.NodeResourceUtilizationThresholds.NumberOfNodes,
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}
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if err := nodeutilization.ValidateLowNodeUtilizationArgs(args); err != nil {
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klog.V(1).ErrorS(err, "unable to validate plugin arguments", "pluginName", nodeutilization.LowNodeUtilizationPluginName)
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return
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}
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pg, err := nodeutilization.NewLowNodeUtilization(args, handle)
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if err != nil {
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klog.V(1).ErrorS(err, "unable to initialize a plugin", "pluginName", nodeutilization.LowNodeUtilizationPluginName)
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return
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}
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status := pg.(framework.BalancePlugin).Balance(ctx, nodes)
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if status != nil && status.Err != nil {
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klog.V(1).ErrorS(err, "plugin finished with error", "pluginName", nodeutilization.LowNodeUtilizationPluginName)
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}
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},
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}
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