mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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1664 lines
54 KiB
Go
1664 lines
54 KiB
Go
/*
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Copyright 2016 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 eviction
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import (
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"fmt"
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"reflect"
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"testing"
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"time"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/v1"
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statsapi "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
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"k8s.io/kubernetes/pkg/kubelet/cm"
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evictionapi "k8s.io/kubernetes/pkg/kubelet/eviction/api"
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"k8s.io/kubernetes/pkg/quota"
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)
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func quantityMustParse(value string) *resource.Quantity {
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q := resource.MustParse(value)
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return &q
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}
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func TestParseThresholdConfig(t *testing.T) {
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gracePeriod, _ := time.ParseDuration("30s")
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testCases := map[string]struct {
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allocatableConfig []string
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evictionHard string
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evictionSoft string
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evictionSoftGracePeriod string
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evictionMinReclaim string
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expectErr bool
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expectThresholds []evictionapi.Threshold
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}{
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"no values": {
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allocatableConfig: []string{},
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evictionHard: "",
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evictionSoft: "",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "",
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expectErr: false,
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expectThresholds: []evictionapi.Threshold{},
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},
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"all flag values": {
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allocatableConfig: []string{cm.NodeAllocatableEnforcementKey},
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evictionHard: "memory.available<150Mi",
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evictionSoft: "memory.available<300Mi",
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evictionSoftGracePeriod: "memory.available=30s",
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evictionMinReclaim: "memory.available=0",
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expectErr: false,
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expectThresholds: []evictionapi.Threshold{
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{
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Signal: evictionapi.SignalAllocatableMemoryAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("0"),
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("0"),
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},
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},
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{
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Signal: evictionapi.SignalMemoryAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("150Mi"),
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("0"),
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},
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},
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{
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Signal: evictionapi.SignalMemoryAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("300Mi"),
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},
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GracePeriod: gracePeriod,
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("0"),
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},
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},
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},
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},
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"all flag values in percentages": {
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allocatableConfig: []string{},
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evictionHard: "memory.available<10%",
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evictionSoft: "memory.available<30%",
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evictionSoftGracePeriod: "memory.available=30s",
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evictionMinReclaim: "memory.available=5%",
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expectErr: false,
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expectThresholds: []evictionapi.Threshold{
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{
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Signal: evictionapi.SignalMemoryAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Percentage: 0.1,
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Percentage: 0.05,
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},
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},
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{
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Signal: evictionapi.SignalMemoryAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Percentage: 0.3,
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},
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GracePeriod: gracePeriod,
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MinReclaim: &evictionapi.ThresholdValue{
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Percentage: 0.05,
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},
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},
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},
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},
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"disk flag values": {
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allocatableConfig: []string{},
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evictionHard: "imagefs.available<150Mi,nodefs.available<100Mi",
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evictionSoft: "imagefs.available<300Mi,nodefs.available<200Mi",
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evictionSoftGracePeriod: "imagefs.available=30s,nodefs.available=30s",
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evictionMinReclaim: "imagefs.available=2Gi,nodefs.available=1Gi",
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expectErr: false,
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expectThresholds: []evictionapi.Threshold{
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{
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Signal: evictionapi.SignalImageFsAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("150Mi"),
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("2Gi"),
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},
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},
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{
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Signal: evictionapi.SignalNodeFsAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("100Mi"),
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("1Gi"),
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},
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},
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{
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Signal: evictionapi.SignalImageFsAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("300Mi"),
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},
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GracePeriod: gracePeriod,
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("2Gi"),
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},
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},
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{
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Signal: evictionapi.SignalNodeFsAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("200Mi"),
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},
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GracePeriod: gracePeriod,
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("1Gi"),
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},
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},
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},
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},
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"disk flag values in percentages": {
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allocatableConfig: []string{},
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evictionHard: "imagefs.available<15%,nodefs.available<10.5%",
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evictionSoft: "imagefs.available<30%,nodefs.available<20.5%",
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evictionSoftGracePeriod: "imagefs.available=30s,nodefs.available=30s",
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evictionMinReclaim: "imagefs.available=10%,nodefs.available=5%",
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expectErr: false,
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expectThresholds: []evictionapi.Threshold{
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{
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Signal: evictionapi.SignalImageFsAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Percentage: 0.15,
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Percentage: 0.1,
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},
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},
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{
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Signal: evictionapi.SignalNodeFsAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Percentage: 0.105,
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Percentage: 0.05,
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},
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},
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{
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Signal: evictionapi.SignalImageFsAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Percentage: 0.3,
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},
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GracePeriod: gracePeriod,
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MinReclaim: &evictionapi.ThresholdValue{
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Percentage: 0.1,
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},
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},
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{
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Signal: evictionapi.SignalNodeFsAvailable,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Percentage: 0.205,
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},
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GracePeriod: gracePeriod,
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MinReclaim: &evictionapi.ThresholdValue{
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Percentage: 0.05,
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},
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},
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},
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},
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"inode flag values": {
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allocatableConfig: []string{},
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evictionHard: "imagefs.inodesFree<150Mi,nodefs.inodesFree<100Mi",
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evictionSoft: "imagefs.inodesFree<300Mi,nodefs.inodesFree<200Mi",
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evictionSoftGracePeriod: "imagefs.inodesFree=30s,nodefs.inodesFree=30s",
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evictionMinReclaim: "imagefs.inodesFree=2Gi,nodefs.inodesFree=1Gi",
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expectErr: false,
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expectThresholds: []evictionapi.Threshold{
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{
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Signal: evictionapi.SignalImageFsInodesFree,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("150Mi"),
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("2Gi"),
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},
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},
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{
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Signal: evictionapi.SignalNodeFsInodesFree,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("100Mi"),
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},
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("1Gi"),
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},
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},
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{
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Signal: evictionapi.SignalImageFsInodesFree,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("300Mi"),
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},
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GracePeriod: gracePeriod,
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("2Gi"),
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},
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},
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{
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Signal: evictionapi.SignalNodeFsInodesFree,
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Operator: evictionapi.OpLessThan,
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Value: evictionapi.ThresholdValue{
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Quantity: quantityMustParse("200Mi"),
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},
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GracePeriod: gracePeriod,
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MinReclaim: &evictionapi.ThresholdValue{
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Quantity: quantityMustParse("1Gi"),
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},
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},
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},
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},
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"invalid-signal": {
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allocatableConfig: []string{},
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evictionHard: "mem.available<150Mi",
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evictionSoft: "",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"hard-signal-negative": {
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allocatableConfig: []string{},
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evictionHard: "memory.available<-150Mi",
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evictionSoft: "",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"hard-signal-negative-percentage": {
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allocatableConfig: []string{},
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evictionHard: "memory.available<-15%",
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evictionSoft: "",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"soft-signal-negative": {
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allocatableConfig: []string{},
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evictionHard: "",
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evictionSoft: "memory.available<-150Mi",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"duplicate-signal": {
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allocatableConfig: []string{},
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evictionHard: "memory.available<150Mi,memory.available<100Mi",
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evictionSoft: "",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"valid-and-invalid-signal": {
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allocatableConfig: []string{},
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evictionHard: "memory.available<150Mi,invalid.foo<150Mi",
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evictionSoft: "",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"soft-no-grace-period": {
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allocatableConfig: []string{},
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evictionHard: "",
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evictionSoft: "memory.available<150Mi",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"soft-neg-grace-period": {
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allocatableConfig: []string{},
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evictionHard: "",
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evictionSoft: "memory.available<150Mi",
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evictionSoftGracePeriod: "memory.available=-30s",
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evictionMinReclaim: "",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"neg-reclaim": {
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allocatableConfig: []string{},
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evictionHard: "",
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evictionSoft: "",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "memory.available=-300Mi",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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"duplicate-reclaim": {
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allocatableConfig: []string{},
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evictionHard: "",
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evictionSoft: "",
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evictionSoftGracePeriod: "",
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evictionMinReclaim: "memory.available=-300Mi,memory.available=-100Mi",
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expectErr: true,
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expectThresholds: []evictionapi.Threshold{},
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},
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}
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for testName, testCase := range testCases {
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thresholds, err := ParseThresholdConfig(testCase.allocatableConfig, testCase.evictionHard, testCase.evictionSoft, testCase.evictionSoftGracePeriod, testCase.evictionMinReclaim)
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if testCase.expectErr != (err != nil) {
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t.Errorf("Err not as expected, test: %v, error expected: %v, actual: %v", testName, testCase.expectErr, err)
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}
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if !thresholdsEqual(testCase.expectThresholds, thresholds) {
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t.Errorf("thresholds not as expected, test: %v, expected: %v, actual: %v", testName, testCase.expectThresholds, thresholds)
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}
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}
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}
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func thresholdsEqual(expected []evictionapi.Threshold, actual []evictionapi.Threshold) bool {
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if len(expected) != len(actual) {
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return false
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}
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for _, aThreshold := range expected {
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equal := false
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for _, bThreshold := range actual {
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if thresholdEqual(aThreshold, bThreshold) {
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equal = true
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}
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}
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if !equal {
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return false
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}
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}
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for _, aThreshold := range actual {
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equal := false
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for _, bThreshold := range expected {
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if thresholdEqual(aThreshold, bThreshold) {
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equal = true
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}
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}
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if !equal {
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return false
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}
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}
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return true
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}
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func thresholdEqual(a evictionapi.Threshold, b evictionapi.Threshold) bool {
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return a.GracePeriod == b.GracePeriod &&
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a.Operator == b.Operator &&
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a.Signal == b.Signal &&
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compareThresholdValue(*a.MinReclaim, *b.MinReclaim) &&
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compareThresholdValue(a.Value, b.Value)
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}
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// TestOrderedByQoS ensures we order BestEffort < Burstable < Guaranteed
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func TestOrderedByQoS(t *testing.T) {
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bestEffort := newPod("best-effort", []v1.Container{
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newContainer("best-effort", newResourceList("", ""), newResourceList("", "")),
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}, nil)
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burstable := newPod("burstable", []v1.Container{
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newContainer("burstable", newResourceList("100m", "100Mi"), newResourceList("200m", "200Mi")),
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}, nil)
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guaranteed := newPod("guaranteed", []v1.Container{
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newContainer("guaranteed", newResourceList("200m", "200Mi"), newResourceList("200m", "200Mi")),
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}, nil)
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pods := []*v1.Pod{guaranteed, burstable, bestEffort}
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orderedBy(qosComparator).Sort(pods)
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expected := []*v1.Pod{bestEffort, burstable, guaranteed}
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for i := range expected {
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if pods[i] != expected[i] {
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t.Errorf("Expected pod: %s, but got: %s", expected[i].Name, pods[i].Name)
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}
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}
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}
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|
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func TestOrderedbyDisk(t *testing.T) {
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testOrderedByResource(t, resourceDisk, newPodDiskStats)
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}
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|
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func TestOrderedbyInodes(t *testing.T) {
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testOrderedByResource(t, resourceInodes, newPodInodeStats)
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}
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|
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// testOrderedByDisk ensures we order pods by greediest resource consumer
|
|
func testOrderedByResource(t *testing.T, orderedByResource v1.ResourceName,
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newPodStatsFunc func(pod *v1.Pod, rootFsUsed, logsUsed, perLocalVolumeUsed resource.Quantity) statsapi.PodStats) {
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pod1 := newPod("best-effort-high", []v1.Container{
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newContainer("best-effort-high", newResourceList("", ""), newResourceList("", "")),
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}, []v1.Volume{
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newVolume("local-volume", v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{},
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}),
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})
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pod2 := newPod("best-effort-low", []v1.Container{
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newContainer("best-effort-low", newResourceList("", ""), newResourceList("", "")),
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}, []v1.Volume{
|
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newVolume("local-volume", v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{},
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}),
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})
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pod3 := newPod("burstable-high", []v1.Container{
|
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newContainer("burstable-high", newResourceList("100m", "100Mi"), newResourceList("200m", "1Gi")),
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}, []v1.Volume{
|
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newVolume("local-volume", v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{},
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}),
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})
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pod4 := newPod("burstable-low", []v1.Container{
|
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newContainer("burstable-low", newResourceList("100m", "100Mi"), newResourceList("200m", "1Gi")),
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}, []v1.Volume{
|
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newVolume("local-volume", v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{},
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}),
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})
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pod5 := newPod("guaranteed-high", []v1.Container{
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newContainer("guaranteed-high", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi")),
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}, []v1.Volume{
|
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newVolume("local-volume", v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{},
|
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}),
|
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})
|
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pod6 := newPod("guaranteed-low", []v1.Container{
|
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newContainer("guaranteed-low", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi")),
|
|
}, []v1.Volume{
|
|
newVolume("local-volume", v1.VolumeSource{
|
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EmptyDir: &v1.EmptyDirVolumeSource{},
|
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}),
|
|
})
|
|
stats := map[*v1.Pod]statsapi.PodStats{
|
|
pod1: newPodStatsFunc(pod1, resource.MustParse("50Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 200Mi
|
|
pod2: newPodStatsFunc(pod2, resource.MustParse("100Mi"), resource.MustParse("150Mi"), resource.MustParse("50Mi")), // 300Mi
|
|
pod3: newPodStatsFunc(pod3, resource.MustParse("200Mi"), resource.MustParse("150Mi"), resource.MustParse("50Mi")), // 400Mi
|
|
pod4: newPodStatsFunc(pod4, resource.MustParse("300Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 450Mi
|
|
pod5: newPodStatsFunc(pod5, resource.MustParse("400Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 550Mi
|
|
pod6: newPodStatsFunc(pod6, resource.MustParse("500Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 650Mi
|
|
}
|
|
statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {
|
|
result, found := stats[pod]
|
|
return result, found
|
|
}
|
|
pods := []*v1.Pod{pod1, pod2, pod3, pod4, pod5, pod6}
|
|
orderedBy(disk(statsFn, []fsStatsType{fsStatsRoot, fsStatsLogs, fsStatsLocalVolumeSource}, orderedByResource)).Sort(pods)
|
|
expected := []*v1.Pod{pod6, pod5, pod4, pod3, pod2, pod1}
|
|
for i := range expected {
|
|
if pods[i] != expected[i] {
|
|
t.Errorf("Expected pod[%d]: %s, but got: %s", i, expected[i].Name, pods[i].Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestOrderedbyQoSDisk(t *testing.T) {
|
|
testOrderedByQoSResource(t, resourceDisk, newPodDiskStats)
|
|
}
|
|
|
|
func TestOrderedbyQoSInodes(t *testing.T) {
|
|
testOrderedByQoSResource(t, resourceInodes, newPodInodeStats)
|
|
}
|
|
|
|
// testOrderedByQoSDisk ensures we order pods by qos and then greediest resource consumer
|
|
func testOrderedByQoSResource(t *testing.T, orderedByResource v1.ResourceName,
|
|
newPodStatsFunc func(pod *v1.Pod, rootFsUsed, logsUsed, perLocalVolumeUsed resource.Quantity) statsapi.PodStats) {
|
|
pod1 := newPod("best-effort-high", []v1.Container{
|
|
newContainer("best-effort-high", newResourceList("", ""), newResourceList("", "")),
|
|
}, []v1.Volume{
|
|
newVolume("local-volume", v1.VolumeSource{
|
|
EmptyDir: &v1.EmptyDirVolumeSource{},
|
|
}),
|
|
})
|
|
pod2 := newPod("best-effort-low", []v1.Container{
|
|
newContainer("best-effort-low", newResourceList("", ""), newResourceList("", "")),
|
|
}, []v1.Volume{
|
|
newVolume("local-volume", v1.VolumeSource{
|
|
EmptyDir: &v1.EmptyDirVolumeSource{},
|
|
}),
|
|
})
|
|
pod3 := newPod("burstable-high", []v1.Container{
|
|
newContainer("burstable-high", newResourceList("100m", "100Mi"), newResourceList("200m", "1Gi")),
|
|
}, []v1.Volume{
|
|
newVolume("local-volume", v1.VolumeSource{
|
|
EmptyDir: &v1.EmptyDirVolumeSource{},
|
|
}),
|
|
})
|
|
pod4 := newPod("burstable-low", []v1.Container{
|
|
newContainer("burstable-low", newResourceList("100m", "100Mi"), newResourceList("200m", "1Gi")),
|
|
}, []v1.Volume{
|
|
newVolume("local-volume", v1.VolumeSource{
|
|
EmptyDir: &v1.EmptyDirVolumeSource{},
|
|
}),
|
|
})
|
|
pod5 := newPod("guaranteed-high", []v1.Container{
|
|
newContainer("guaranteed-high", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi")),
|
|
}, []v1.Volume{
|
|
newVolume("local-volume", v1.VolumeSource{
|
|
EmptyDir: &v1.EmptyDirVolumeSource{},
|
|
}),
|
|
})
|
|
pod6 := newPod("guaranteed-low", []v1.Container{
|
|
newContainer("guaranteed-low", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi")),
|
|
}, []v1.Volume{
|
|
newVolume("local-volume", v1.VolumeSource{
|
|
EmptyDir: &v1.EmptyDirVolumeSource{},
|
|
}),
|
|
})
|
|
stats := map[*v1.Pod]statsapi.PodStats{
|
|
pod1: newPodStatsFunc(pod1, resource.MustParse("50Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 200Mi
|
|
pod2: newPodStatsFunc(pod2, resource.MustParse("100Mi"), resource.MustParse("150Mi"), resource.MustParse("50Mi")), // 300Mi
|
|
pod3: newPodStatsFunc(pod3, resource.MustParse("200Mi"), resource.MustParse("150Mi"), resource.MustParse("50Mi")), // 400Mi
|
|
pod4: newPodStatsFunc(pod4, resource.MustParse("300Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 450Mi
|
|
pod5: newPodStatsFunc(pod5, resource.MustParse("400Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 550Mi
|
|
pod6: newPodStatsFunc(pod6, resource.MustParse("500Mi"), resource.MustParse("100Mi"), resource.MustParse("50Mi")), // 650Mi
|
|
}
|
|
statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {
|
|
result, found := stats[pod]
|
|
return result, found
|
|
}
|
|
pods := []*v1.Pod{pod1, pod2, pod3, pod4, pod5, pod6}
|
|
orderedBy(qosComparator, disk(statsFn, []fsStatsType{fsStatsRoot, fsStatsLogs, fsStatsLocalVolumeSource}, orderedByResource)).Sort(pods)
|
|
expected := []*v1.Pod{pod2, pod1, pod4, pod3, pod6, pod5}
|
|
for i := range expected {
|
|
if pods[i] != expected[i] {
|
|
t.Errorf("Expected pod[%d]: %s, but got: %s", i, expected[i].Name, pods[i].Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestOrderedByMemory ensures we order pods by greediest memory consumer relative to request.
|
|
func TestOrderedByMemory(t *testing.T) {
|
|
pod1 := newPod("best-effort-high", []v1.Container{
|
|
newContainer("best-effort-high", newResourceList("", ""), newResourceList("", "")),
|
|
}, nil)
|
|
pod2 := newPod("best-effort-low", []v1.Container{
|
|
newContainer("best-effort-low", newResourceList("", ""), newResourceList("", "")),
|
|
}, nil)
|
|
pod3 := newPod("burstable-high", []v1.Container{
|
|
newContainer("burstable-high", newResourceList("100m", "100Mi"), newResourceList("200m", "1Gi")),
|
|
}, nil)
|
|
pod4 := newPod("burstable-low", []v1.Container{
|
|
newContainer("burstable-low", newResourceList("100m", "100Mi"), newResourceList("200m", "1Gi")),
|
|
}, nil)
|
|
pod5 := newPod("guaranteed-high", []v1.Container{
|
|
newContainer("guaranteed-high", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi")),
|
|
}, nil)
|
|
pod6 := newPod("guaranteed-low", []v1.Container{
|
|
newContainer("guaranteed-low", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi")),
|
|
}, nil)
|
|
stats := map[*v1.Pod]statsapi.PodStats{
|
|
pod1: newPodMemoryStats(pod1, resource.MustParse("500Mi")), // 500 relative to request
|
|
pod2: newPodMemoryStats(pod2, resource.MustParse("300Mi")), // 300 relative to request
|
|
pod3: newPodMemoryStats(pod3, resource.MustParse("800Mi")), // 700 relative to request
|
|
pod4: newPodMemoryStats(pod4, resource.MustParse("300Mi")), // 200 relative to request
|
|
pod5: newPodMemoryStats(pod5, resource.MustParse("800Mi")), // -200 relative to request
|
|
pod6: newPodMemoryStats(pod6, resource.MustParse("200Mi")), // -800 relative to request
|
|
}
|
|
statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {
|
|
result, found := stats[pod]
|
|
return result, found
|
|
}
|
|
pods := []*v1.Pod{pod1, pod2, pod3, pod4, pod5, pod6}
|
|
orderedBy(memory(statsFn)).Sort(pods)
|
|
expected := []*v1.Pod{pod3, pod1, pod2, pod4, pod5, pod6}
|
|
for i := range expected {
|
|
if pods[i] != expected[i] {
|
|
t.Errorf("Expected pod[%d]: %s, but got: %s", i, expected[i].Name, pods[i].Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestOrderedByQoSMemory ensures we order by qosComparator and then memory consumption relative to request.
|
|
func TestOrderedByQoSMemory(t *testing.T) {
|
|
pod1 := newPod("best-effort-high", []v1.Container{
|
|
newContainer("best-effort-high", newResourceList("", ""), newResourceList("", "")),
|
|
}, nil)
|
|
pod2 := newPod("best-effort-low", []v1.Container{
|
|
newContainer("best-effort-low", newResourceList("", ""), newResourceList("", "")),
|
|
}, nil)
|
|
pod3 := newPod("burstable-high", []v1.Container{
|
|
newContainer("burstable-high", newResourceList("100m", "100Mi"), newResourceList("200m", "1Gi")),
|
|
}, nil)
|
|
pod4 := newPod("burstable-low", []v1.Container{
|
|
newContainer("burstable-low", newResourceList("100m", "100Mi"), newResourceList("200m", "1Gi")),
|
|
}, nil)
|
|
pod5 := newPod("guaranteed-high", []v1.Container{
|
|
newContainer("guaranteed-high", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi")),
|
|
}, nil)
|
|
pod6 := newPod("guaranteed-low", []v1.Container{
|
|
newContainer("guaranteed-low", newResourceList("100m", "1Gi"), newResourceList("100m", "1Gi")),
|
|
}, nil)
|
|
stats := map[*v1.Pod]statsapi.PodStats{
|
|
pod1: newPodMemoryStats(pod1, resource.MustParse("500Mi")), // 500 relative to request
|
|
pod2: newPodMemoryStats(pod2, resource.MustParse("50Mi")), // 50 relative to request
|
|
pod3: newPodMemoryStats(pod3, resource.MustParse("50Mi")), // -50 relative to request
|
|
pod4: newPodMemoryStats(pod4, resource.MustParse("300Mi")), // 200 relative to request
|
|
pod5: newPodMemoryStats(pod5, resource.MustParse("800Mi")), // -200 relative to request
|
|
pod6: newPodMemoryStats(pod6, resource.MustParse("200Mi")), // -800 relative to request
|
|
}
|
|
statsFn := func(pod *v1.Pod) (statsapi.PodStats, bool) {
|
|
result, found := stats[pod]
|
|
return result, found
|
|
}
|
|
pods := []*v1.Pod{pod1, pod2, pod3, pod4, pod5, pod6}
|
|
expected := []*v1.Pod{pod1, pod2, pod4, pod3, pod5, pod6}
|
|
orderedBy(qosComparator, memory(statsFn)).Sort(pods)
|
|
for i := range expected {
|
|
if pods[i] != expected[i] {
|
|
t.Errorf("Expected pod[%d]: %s, but got: %s", i, expected[i].Name, pods[i].Name)
|
|
}
|
|
}
|
|
}
|
|
|
|
type fakeSummaryProvider struct {
|
|
result *statsapi.Summary
|
|
}
|
|
|
|
func (f *fakeSummaryProvider) Get() (*statsapi.Summary, error) {
|
|
return f.result, nil
|
|
}
|
|
|
|
// newPodStats returns a pod stat where each container is using the specified working set
|
|
// each pod must have a Name, UID, Namespace
|
|
func newPodStats(pod *v1.Pod, containerWorkingSetBytes int64) statsapi.PodStats {
|
|
result := statsapi.PodStats{
|
|
PodRef: statsapi.PodReference{
|
|
Name: pod.Name,
|
|
Namespace: pod.Namespace,
|
|
UID: string(pod.UID),
|
|
},
|
|
}
|
|
val := uint64(containerWorkingSetBytes)
|
|
for range pod.Spec.Containers {
|
|
result.Containers = append(result.Containers, statsapi.ContainerStats{
|
|
Memory: &statsapi.MemoryStats{
|
|
WorkingSetBytes: &val,
|
|
},
|
|
})
|
|
}
|
|
return result
|
|
}
|
|
|
|
func TestMakeSignalObservations(t *testing.T) {
|
|
podMaker := func(name, namespace, uid string, numContainers int) *v1.Pod {
|
|
pod := &v1.Pod{}
|
|
pod.Name = name
|
|
pod.Namespace = namespace
|
|
pod.UID = types.UID(uid)
|
|
pod.Spec = v1.PodSpec{}
|
|
for i := 0; i < numContainers; i++ {
|
|
pod.Spec.Containers = append(pod.Spec.Containers, v1.Container{
|
|
Name: fmt.Sprintf("ctr%v", i),
|
|
})
|
|
}
|
|
return pod
|
|
}
|
|
nodeAvailableBytes := uint64(1024 * 1024 * 1024)
|
|
nodeWorkingSetBytes := uint64(1024 * 1024 * 1024)
|
|
allocatableMemoryCapacity := uint64(5 * 1024 * 1024 * 1024)
|
|
imageFsAvailableBytes := uint64(1024 * 1024)
|
|
imageFsCapacityBytes := uint64(1024 * 1024 * 2)
|
|
nodeFsAvailableBytes := uint64(1024)
|
|
nodeFsCapacityBytes := uint64(1024 * 2)
|
|
imageFsInodesFree := uint64(1024)
|
|
imageFsInodes := uint64(1024 * 1024)
|
|
nodeFsInodesFree := uint64(1024)
|
|
nodeFsInodes := uint64(1024 * 1024)
|
|
fakeStats := &statsapi.Summary{
|
|
Node: statsapi.NodeStats{
|
|
Memory: &statsapi.MemoryStats{
|
|
AvailableBytes: &nodeAvailableBytes,
|
|
WorkingSetBytes: &nodeWorkingSetBytes,
|
|
},
|
|
Runtime: &statsapi.RuntimeStats{
|
|
ImageFs: &statsapi.FsStats{
|
|
AvailableBytes: &imageFsAvailableBytes,
|
|
CapacityBytes: &imageFsCapacityBytes,
|
|
InodesFree: &imageFsInodesFree,
|
|
Inodes: &imageFsInodes,
|
|
},
|
|
},
|
|
Fs: &statsapi.FsStats{
|
|
AvailableBytes: &nodeFsAvailableBytes,
|
|
CapacityBytes: &nodeFsCapacityBytes,
|
|
InodesFree: &nodeFsInodesFree,
|
|
Inodes: &nodeFsInodes,
|
|
},
|
|
},
|
|
Pods: []statsapi.PodStats{},
|
|
}
|
|
provider := &fakeSummaryProvider{
|
|
result: fakeStats,
|
|
}
|
|
pods := []*v1.Pod{
|
|
podMaker("pod1", "ns1", "uuid1", 1),
|
|
podMaker("pod1", "ns2", "uuid2", 1),
|
|
podMaker("pod3", "ns3", "uuid3", 1),
|
|
}
|
|
containerWorkingSetBytes := int64(1024 * 1024 * 1024)
|
|
for _, pod := range pods {
|
|
fakeStats.Pods = append(fakeStats.Pods, newPodStats(pod, containerWorkingSetBytes))
|
|
}
|
|
res := quantityMustParse("5Gi")
|
|
nodeProvider := newMockNodeProvider(v1.ResourceList{v1.ResourceMemory: *res})
|
|
// Allocatable thresholds are always 100%. Verify that Threshold == Capacity.
|
|
if res.CmpInt64(int64(allocatableMemoryCapacity)) != 0 {
|
|
t.Errorf("Expected Threshold %v to be equal to value %v", res.Value(), allocatableMemoryCapacity)
|
|
}
|
|
actualObservations, statsFunc, err := makeSignalObservations(provider, nodeProvider)
|
|
|
|
if err != nil {
|
|
t.Errorf("Unexpected err: %v", err)
|
|
}
|
|
allocatableMemQuantity, found := actualObservations[evictionapi.SignalAllocatableMemoryAvailable]
|
|
if !found {
|
|
t.Errorf("Expected allocatable memory observation, but didnt find one")
|
|
}
|
|
if allocatableMemQuantity.available.Value() != 2*containerWorkingSetBytes {
|
|
t.Errorf("Expected %v, actual: %v", containerWorkingSetBytes, allocatableMemQuantity.available.Value())
|
|
}
|
|
if expectedBytes := int64(allocatableMemoryCapacity); allocatableMemQuantity.capacity.Value() != expectedBytes {
|
|
t.Errorf("Expected %v, actual: %v", expectedBytes, allocatableMemQuantity.capacity.Value())
|
|
}
|
|
memQuantity, found := actualObservations[evictionapi.SignalMemoryAvailable]
|
|
if !found {
|
|
t.Errorf("Expected available memory observation: %v", err)
|
|
}
|
|
if expectedBytes := int64(nodeAvailableBytes); memQuantity.available.Value() != expectedBytes {
|
|
t.Errorf("Expected %v, actual: %v", expectedBytes, memQuantity.available.Value())
|
|
}
|
|
if expectedBytes := int64(nodeWorkingSetBytes + nodeAvailableBytes); memQuantity.capacity.Value() != expectedBytes {
|
|
t.Errorf("Expected %v, actual: %v", expectedBytes, memQuantity.capacity.Value())
|
|
}
|
|
nodeFsQuantity, found := actualObservations[evictionapi.SignalNodeFsAvailable]
|
|
if !found {
|
|
t.Errorf("Expected available nodefs observation: %v", err)
|
|
}
|
|
if expectedBytes := int64(nodeFsAvailableBytes); nodeFsQuantity.available.Value() != expectedBytes {
|
|
t.Errorf("Expected %v, actual: %v", expectedBytes, nodeFsQuantity.available.Value())
|
|
}
|
|
if expectedBytes := int64(nodeFsCapacityBytes); nodeFsQuantity.capacity.Value() != expectedBytes {
|
|
t.Errorf("Expected %v, actual: %v", expectedBytes, nodeFsQuantity.capacity.Value())
|
|
}
|
|
nodeFsInodesQuantity, found := actualObservations[evictionapi.SignalNodeFsInodesFree]
|
|
if !found {
|
|
t.Errorf("Expected inodes free nodefs observation: %v", err)
|
|
}
|
|
if expected := int64(nodeFsInodesFree); nodeFsInodesQuantity.available.Value() != expected {
|
|
t.Errorf("Expected %v, actual: %v", expected, nodeFsInodesQuantity.available.Value())
|
|
}
|
|
if expected := int64(nodeFsInodes); nodeFsInodesQuantity.capacity.Value() != expected {
|
|
t.Errorf("Expected %v, actual: %v", expected, nodeFsInodesQuantity.capacity.Value())
|
|
}
|
|
imageFsQuantity, found := actualObservations[evictionapi.SignalImageFsAvailable]
|
|
if !found {
|
|
t.Errorf("Expected available imagefs observation: %v", err)
|
|
}
|
|
if expectedBytes := int64(imageFsAvailableBytes); imageFsQuantity.available.Value() != expectedBytes {
|
|
t.Errorf("Expected %v, actual: %v", expectedBytes, imageFsQuantity.available.Value())
|
|
}
|
|
if expectedBytes := int64(imageFsCapacityBytes); imageFsQuantity.capacity.Value() != expectedBytes {
|
|
t.Errorf("Expected %v, actual: %v", expectedBytes, imageFsQuantity.capacity.Value())
|
|
}
|
|
imageFsInodesQuantity, found := actualObservations[evictionapi.SignalImageFsInodesFree]
|
|
if !found {
|
|
t.Errorf("Expected inodes free imagefs observation: %v", err)
|
|
}
|
|
if expected := int64(imageFsInodesFree); imageFsInodesQuantity.available.Value() != expected {
|
|
t.Errorf("Expected %v, actual: %v", expected, imageFsInodesQuantity.available.Value())
|
|
}
|
|
if expected := int64(imageFsInodes); imageFsInodesQuantity.capacity.Value() != expected {
|
|
t.Errorf("Expected %v, actual: %v", expected, imageFsInodesQuantity.capacity.Value())
|
|
}
|
|
for _, pod := range pods {
|
|
podStats, found := statsFunc(pod)
|
|
if !found {
|
|
t.Errorf("Pod stats were not found for pod %v", pod.UID)
|
|
}
|
|
for _, container := range podStats.Containers {
|
|
actual := int64(*container.Memory.WorkingSetBytes)
|
|
if containerWorkingSetBytes != actual {
|
|
t.Errorf("Container working set expected %v, actual: %v", containerWorkingSetBytes, actual)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestThresholdsMet(t *testing.T) {
|
|
hardThreshold := evictionapi.Threshold{
|
|
Signal: evictionapi.SignalMemoryAvailable,
|
|
Operator: evictionapi.OpLessThan,
|
|
Value: evictionapi.ThresholdValue{
|
|
Quantity: quantityMustParse("1Gi"),
|
|
},
|
|
MinReclaim: &evictionapi.ThresholdValue{
|
|
Quantity: quantityMustParse("500Mi"),
|
|
},
|
|
}
|
|
testCases := map[string]struct {
|
|
enforceMinReclaim bool
|
|
thresholds []evictionapi.Threshold
|
|
observations signalObservations
|
|
result []evictionapi.Threshold
|
|
}{
|
|
"empty": {
|
|
enforceMinReclaim: false,
|
|
thresholds: []evictionapi.Threshold{},
|
|
observations: signalObservations{},
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
"threshold-met-memory": {
|
|
enforceMinReclaim: false,
|
|
thresholds: []evictionapi.Threshold{hardThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("500Mi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{hardThreshold},
|
|
},
|
|
"threshold-not-met": {
|
|
enforceMinReclaim: false,
|
|
thresholds: []evictionapi.Threshold{hardThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("2Gi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
"threshold-met-with-min-reclaim": {
|
|
enforceMinReclaim: true,
|
|
thresholds: []evictionapi.Threshold{hardThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("1.05Gi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{hardThreshold},
|
|
},
|
|
"threshold-not-met-with-min-reclaim": {
|
|
enforceMinReclaim: true,
|
|
thresholds: []evictionapi.Threshold{hardThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("2Gi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := thresholdsMet(testCase.thresholds, testCase.observations, testCase.enforceMinReclaim)
|
|
if !thresholdList(actual).Equal(thresholdList(testCase.result)) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestThresholdsUpdatedStats(t *testing.T) {
|
|
updatedThreshold := evictionapi.Threshold{
|
|
Signal: evictionapi.SignalMemoryAvailable,
|
|
}
|
|
locationUTC, err := time.LoadLocation("UTC")
|
|
if err != nil {
|
|
t.Error(err)
|
|
return
|
|
}
|
|
testCases := map[string]struct {
|
|
thresholds []evictionapi.Threshold
|
|
observations signalObservations
|
|
last signalObservations
|
|
result []evictionapi.Threshold
|
|
}{
|
|
"empty": {
|
|
thresholds: []evictionapi.Threshold{},
|
|
observations: signalObservations{},
|
|
last: signalObservations{},
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
"no-time": {
|
|
thresholds: []evictionapi.Threshold{updatedThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{},
|
|
},
|
|
last: signalObservations{},
|
|
result: []evictionapi.Threshold{updatedThreshold},
|
|
},
|
|
"no-last-observation": {
|
|
thresholds: []evictionapi.Threshold{updatedThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
time: metav1.Date(2016, 1, 1, 0, 0, 0, 0, locationUTC),
|
|
},
|
|
},
|
|
last: signalObservations{},
|
|
result: []evictionapi.Threshold{updatedThreshold},
|
|
},
|
|
"time-machine": {
|
|
thresholds: []evictionapi.Threshold{updatedThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
time: metav1.Date(2016, 1, 1, 0, 0, 0, 0, locationUTC),
|
|
},
|
|
},
|
|
last: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
time: metav1.Date(2016, 1, 1, 0, 1, 0, 0, locationUTC),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
"same-observation": {
|
|
thresholds: []evictionapi.Threshold{updatedThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
time: metav1.Date(2016, 1, 1, 0, 0, 0, 0, locationUTC),
|
|
},
|
|
},
|
|
last: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
time: metav1.Date(2016, 1, 1, 0, 0, 0, 0, locationUTC),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
"new-observation": {
|
|
thresholds: []evictionapi.Threshold{updatedThreshold},
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
time: metav1.Date(2016, 1, 1, 0, 1, 0, 0, locationUTC),
|
|
},
|
|
},
|
|
last: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
time: metav1.Date(2016, 1, 1, 0, 0, 0, 0, locationUTC),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{updatedThreshold},
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := thresholdsUpdatedStats(testCase.thresholds, testCase.observations, testCase.last)
|
|
if !thresholdList(actual).Equal(thresholdList(testCase.result)) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestPercentageThresholdsMet(t *testing.T) {
|
|
specificThresholds := []evictionapi.Threshold{
|
|
{
|
|
Signal: evictionapi.SignalMemoryAvailable,
|
|
Operator: evictionapi.OpLessThan,
|
|
Value: evictionapi.ThresholdValue{
|
|
Percentage: 0.2,
|
|
},
|
|
MinReclaim: &evictionapi.ThresholdValue{
|
|
Percentage: 0.05,
|
|
},
|
|
},
|
|
{
|
|
Signal: evictionapi.SignalNodeFsAvailable,
|
|
Operator: evictionapi.OpLessThan,
|
|
Value: evictionapi.ThresholdValue{
|
|
Percentage: 0.3,
|
|
},
|
|
},
|
|
}
|
|
|
|
testCases := map[string]struct {
|
|
enforceMinRelaim bool
|
|
thresholds []evictionapi.Threshold
|
|
observations signalObservations
|
|
result []evictionapi.Threshold
|
|
}{
|
|
"BothMet": {
|
|
enforceMinRelaim: false,
|
|
thresholds: specificThresholds,
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("100Mi"),
|
|
capacity: quantityMustParse("1000Mi"),
|
|
},
|
|
evictionapi.SignalNodeFsAvailable: signalObservation{
|
|
available: quantityMustParse("100Gi"),
|
|
capacity: quantityMustParse("1000Gi"),
|
|
},
|
|
},
|
|
result: specificThresholds,
|
|
},
|
|
"NoneMet": {
|
|
enforceMinRelaim: false,
|
|
thresholds: specificThresholds,
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("300Mi"),
|
|
capacity: quantityMustParse("1000Mi"),
|
|
},
|
|
evictionapi.SignalNodeFsAvailable: signalObservation{
|
|
available: quantityMustParse("400Gi"),
|
|
capacity: quantityMustParse("1000Gi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
"DiskMet": {
|
|
enforceMinRelaim: false,
|
|
thresholds: specificThresholds,
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("300Mi"),
|
|
capacity: quantityMustParse("1000Mi"),
|
|
},
|
|
evictionapi.SignalNodeFsAvailable: signalObservation{
|
|
available: quantityMustParse("100Gi"),
|
|
capacity: quantityMustParse("1000Gi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{specificThresholds[1]},
|
|
},
|
|
"MemoryMet": {
|
|
enforceMinRelaim: false,
|
|
thresholds: specificThresholds,
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("100Mi"),
|
|
capacity: quantityMustParse("1000Mi"),
|
|
},
|
|
evictionapi.SignalNodeFsAvailable: signalObservation{
|
|
available: quantityMustParse("400Gi"),
|
|
capacity: quantityMustParse("1000Gi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{specificThresholds[0]},
|
|
},
|
|
"MemoryMetWithMinReclaim": {
|
|
enforceMinRelaim: true,
|
|
thresholds: specificThresholds,
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("225Mi"),
|
|
capacity: quantityMustParse("1000Mi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{specificThresholds[0]},
|
|
},
|
|
"MemoryNotMetWithMinReclaim": {
|
|
enforceMinRelaim: true,
|
|
thresholds: specificThresholds,
|
|
observations: signalObservations{
|
|
evictionapi.SignalMemoryAvailable: signalObservation{
|
|
available: quantityMustParse("300Mi"),
|
|
capacity: quantityMustParse("1000Mi"),
|
|
},
|
|
},
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := thresholdsMet(testCase.thresholds, testCase.observations, testCase.enforceMinRelaim)
|
|
if !thresholdList(actual).Equal(thresholdList(testCase.result)) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestThresholdsFirstObservedAt(t *testing.T) {
|
|
hardThreshold := evictionapi.Threshold{
|
|
Signal: evictionapi.SignalMemoryAvailable,
|
|
Operator: evictionapi.OpLessThan,
|
|
Value: evictionapi.ThresholdValue{
|
|
Quantity: quantityMustParse("1Gi"),
|
|
},
|
|
}
|
|
now := metav1.Now()
|
|
oldTime := metav1.NewTime(now.Time.Add(-1 * time.Minute))
|
|
testCases := map[string]struct {
|
|
thresholds []evictionapi.Threshold
|
|
lastObservedAt thresholdsObservedAt
|
|
now time.Time
|
|
result thresholdsObservedAt
|
|
}{
|
|
"empty": {
|
|
thresholds: []evictionapi.Threshold{},
|
|
lastObservedAt: thresholdsObservedAt{},
|
|
now: now.Time,
|
|
result: thresholdsObservedAt{},
|
|
},
|
|
"no-previous-observation": {
|
|
thresholds: []evictionapi.Threshold{hardThreshold},
|
|
lastObservedAt: thresholdsObservedAt{},
|
|
now: now.Time,
|
|
result: thresholdsObservedAt{
|
|
hardThreshold: now.Time,
|
|
},
|
|
},
|
|
"previous-observation": {
|
|
thresholds: []evictionapi.Threshold{hardThreshold},
|
|
lastObservedAt: thresholdsObservedAt{
|
|
hardThreshold: oldTime.Time,
|
|
},
|
|
now: now.Time,
|
|
result: thresholdsObservedAt{
|
|
hardThreshold: oldTime.Time,
|
|
},
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := thresholdsFirstObservedAt(testCase.thresholds, testCase.lastObservedAt, testCase.now)
|
|
if !reflect.DeepEqual(actual, testCase.result) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestThresholdsMetGracePeriod(t *testing.T) {
|
|
now := metav1.Now()
|
|
hardThreshold := evictionapi.Threshold{
|
|
Signal: evictionapi.SignalMemoryAvailable,
|
|
Operator: evictionapi.OpLessThan,
|
|
Value: evictionapi.ThresholdValue{
|
|
Quantity: quantityMustParse("1Gi"),
|
|
},
|
|
}
|
|
softThreshold := evictionapi.Threshold{
|
|
Signal: evictionapi.SignalMemoryAvailable,
|
|
Operator: evictionapi.OpLessThan,
|
|
Value: evictionapi.ThresholdValue{
|
|
Quantity: quantityMustParse("2Gi"),
|
|
},
|
|
GracePeriod: 1 * time.Minute,
|
|
}
|
|
oldTime := metav1.NewTime(now.Time.Add(-2 * time.Minute))
|
|
testCases := map[string]struct {
|
|
observedAt thresholdsObservedAt
|
|
now time.Time
|
|
result []evictionapi.Threshold
|
|
}{
|
|
"empty": {
|
|
observedAt: thresholdsObservedAt{},
|
|
now: now.Time,
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
"hard-threshold-met": {
|
|
observedAt: thresholdsObservedAt{
|
|
hardThreshold: now.Time,
|
|
},
|
|
now: now.Time,
|
|
result: []evictionapi.Threshold{hardThreshold},
|
|
},
|
|
"soft-threshold-not-met": {
|
|
observedAt: thresholdsObservedAt{
|
|
softThreshold: now.Time,
|
|
},
|
|
now: now.Time,
|
|
result: []evictionapi.Threshold{},
|
|
},
|
|
"soft-threshold-met": {
|
|
observedAt: thresholdsObservedAt{
|
|
softThreshold: oldTime.Time,
|
|
},
|
|
now: now.Time,
|
|
result: []evictionapi.Threshold{softThreshold},
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := thresholdsMetGracePeriod(testCase.observedAt, now.Time)
|
|
if !thresholdList(actual).Equal(thresholdList(testCase.result)) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestNodeConditions(t *testing.T) {
|
|
testCases := map[string]struct {
|
|
inputs []evictionapi.Threshold
|
|
result []v1.NodeConditionType
|
|
}{
|
|
"empty-list": {
|
|
inputs: []evictionapi.Threshold{},
|
|
result: []v1.NodeConditionType{},
|
|
},
|
|
"memory.available": {
|
|
inputs: []evictionapi.Threshold{
|
|
{Signal: evictionapi.SignalMemoryAvailable},
|
|
},
|
|
result: []v1.NodeConditionType{v1.NodeMemoryPressure},
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := nodeConditions(testCase.inputs)
|
|
if !nodeConditionList(actual).Equal(nodeConditionList(testCase.result)) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestNodeConditionsLastObservedAt(t *testing.T) {
|
|
now := metav1.Now()
|
|
oldTime := metav1.NewTime(now.Time.Add(-1 * time.Minute))
|
|
testCases := map[string]struct {
|
|
nodeConditions []v1.NodeConditionType
|
|
lastObservedAt nodeConditionsObservedAt
|
|
now time.Time
|
|
result nodeConditionsObservedAt
|
|
}{
|
|
"no-previous-observation": {
|
|
nodeConditions: []v1.NodeConditionType{v1.NodeMemoryPressure},
|
|
lastObservedAt: nodeConditionsObservedAt{},
|
|
now: now.Time,
|
|
result: nodeConditionsObservedAt{
|
|
v1.NodeMemoryPressure: now.Time,
|
|
},
|
|
},
|
|
"previous-observation": {
|
|
nodeConditions: []v1.NodeConditionType{v1.NodeMemoryPressure},
|
|
lastObservedAt: nodeConditionsObservedAt{
|
|
v1.NodeMemoryPressure: oldTime.Time,
|
|
},
|
|
now: now.Time,
|
|
result: nodeConditionsObservedAt{
|
|
v1.NodeMemoryPressure: now.Time,
|
|
},
|
|
},
|
|
"old-observation": {
|
|
nodeConditions: []v1.NodeConditionType{},
|
|
lastObservedAt: nodeConditionsObservedAt{
|
|
v1.NodeMemoryPressure: oldTime.Time,
|
|
},
|
|
now: now.Time,
|
|
result: nodeConditionsObservedAt{
|
|
v1.NodeMemoryPressure: oldTime.Time,
|
|
},
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := nodeConditionsLastObservedAt(testCase.nodeConditions, testCase.lastObservedAt, testCase.now)
|
|
if !reflect.DeepEqual(actual, testCase.result) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestNodeConditionsObservedSince(t *testing.T) {
|
|
now := metav1.Now()
|
|
observedTime := metav1.NewTime(now.Time.Add(-1 * time.Minute))
|
|
testCases := map[string]struct {
|
|
observedAt nodeConditionsObservedAt
|
|
period time.Duration
|
|
now time.Time
|
|
result []v1.NodeConditionType
|
|
}{
|
|
"in-period": {
|
|
observedAt: nodeConditionsObservedAt{
|
|
v1.NodeMemoryPressure: observedTime.Time,
|
|
},
|
|
period: 2 * time.Minute,
|
|
now: now.Time,
|
|
result: []v1.NodeConditionType{v1.NodeMemoryPressure},
|
|
},
|
|
"out-of-period": {
|
|
observedAt: nodeConditionsObservedAt{
|
|
v1.NodeMemoryPressure: observedTime.Time,
|
|
},
|
|
period: 30 * time.Second,
|
|
now: now.Time,
|
|
result: []v1.NodeConditionType{},
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := nodeConditionsObservedSince(testCase.observedAt, testCase.period, testCase.now)
|
|
if !nodeConditionList(actual).Equal(nodeConditionList(testCase.result)) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestHasNodeConditions(t *testing.T) {
|
|
testCases := map[string]struct {
|
|
inputs []v1.NodeConditionType
|
|
item v1.NodeConditionType
|
|
result bool
|
|
}{
|
|
"has-condition": {
|
|
inputs: []v1.NodeConditionType{v1.NodeReady, v1.NodeOutOfDisk, v1.NodeMemoryPressure},
|
|
item: v1.NodeMemoryPressure,
|
|
result: true,
|
|
},
|
|
"does-not-have-condition": {
|
|
inputs: []v1.NodeConditionType{v1.NodeReady, v1.NodeOutOfDisk},
|
|
item: v1.NodeMemoryPressure,
|
|
result: false,
|
|
},
|
|
}
|
|
for testName, testCase := range testCases {
|
|
if actual := hasNodeCondition(testCase.inputs, testCase.item); actual != testCase.result {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, testCase.result, actual)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestGetStarvedResources(t *testing.T) {
|
|
testCases := map[string]struct {
|
|
inputs []evictionapi.Threshold
|
|
result []v1.ResourceName
|
|
}{
|
|
"memory.available": {
|
|
inputs: []evictionapi.Threshold{
|
|
{Signal: evictionapi.SignalMemoryAvailable},
|
|
},
|
|
result: []v1.ResourceName{v1.ResourceMemory},
|
|
},
|
|
"imagefs.available": {
|
|
inputs: []evictionapi.Threshold{
|
|
{Signal: evictionapi.SignalImageFsAvailable},
|
|
},
|
|
result: []v1.ResourceName{resourceImageFs},
|
|
},
|
|
"nodefs.available": {
|
|
inputs: []evictionapi.Threshold{
|
|
{Signal: evictionapi.SignalNodeFsAvailable},
|
|
},
|
|
result: []v1.ResourceName{resourceNodeFs},
|
|
},
|
|
}
|
|
var internalResourceNames = func(in []v1.ResourceName) []api.ResourceName {
|
|
var out []api.ResourceName
|
|
for _, name := range in {
|
|
out = append(out, api.ResourceName(name))
|
|
}
|
|
return out
|
|
}
|
|
for testName, testCase := range testCases {
|
|
actual := getStarvedResources(testCase.inputs)
|
|
actualSet := quota.ToSet(internalResourceNames(actual))
|
|
expectedSet := quota.ToSet(internalResourceNames(testCase.result))
|
|
if !actualSet.Equal(expectedSet) {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", testName, expectedSet, actualSet)
|
|
}
|
|
}
|
|
}
|
|
|
|
func testParsePercentage(t *testing.T) {
|
|
testCases := map[string]struct {
|
|
hasError bool
|
|
value float32
|
|
}{
|
|
"blah": {
|
|
hasError: true,
|
|
},
|
|
"25.5%": {
|
|
value: 0.255,
|
|
},
|
|
"foo%": {
|
|
hasError: true,
|
|
},
|
|
"12%345": {
|
|
hasError: true,
|
|
},
|
|
}
|
|
for input, expected := range testCases {
|
|
value, err := parsePercentage(input)
|
|
if (err != nil) != expected.hasError {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", input, expected.hasError, err != nil)
|
|
}
|
|
if value != expected.value {
|
|
t.Errorf("Test case: %s, expected: %v, actual: %v", input, expected.value, value)
|
|
}
|
|
}
|
|
}
|
|
|
|
func testCompareThresholdValue(t *testing.T) {
|
|
testCases := []struct {
|
|
a, b evictionapi.ThresholdValue
|
|
equal bool
|
|
}{
|
|
{
|
|
a: evictionapi.ThresholdValue{
|
|
Quantity: resource.NewQuantity(123, resource.BinarySI),
|
|
},
|
|
b: evictionapi.ThresholdValue{
|
|
Quantity: resource.NewQuantity(123, resource.BinarySI),
|
|
},
|
|
equal: true,
|
|
},
|
|
{
|
|
a: evictionapi.ThresholdValue{
|
|
Quantity: resource.NewQuantity(123, resource.BinarySI),
|
|
},
|
|
b: evictionapi.ThresholdValue{
|
|
Quantity: resource.NewQuantity(456, resource.BinarySI),
|
|
},
|
|
equal: false,
|
|
},
|
|
{
|
|
a: evictionapi.ThresholdValue{
|
|
Quantity: resource.NewQuantity(123, resource.BinarySI),
|
|
},
|
|
b: evictionapi.ThresholdValue{
|
|
Percentage: 0.1,
|
|
},
|
|
equal: false,
|
|
},
|
|
{
|
|
a: evictionapi.ThresholdValue{
|
|
Percentage: 0.1,
|
|
},
|
|
b: evictionapi.ThresholdValue{
|
|
Percentage: 0.1,
|
|
},
|
|
equal: true,
|
|
},
|
|
{
|
|
a: evictionapi.ThresholdValue{
|
|
Percentage: 0.2,
|
|
},
|
|
b: evictionapi.ThresholdValue{
|
|
Percentage: 0.1,
|
|
},
|
|
equal: false,
|
|
},
|
|
}
|
|
|
|
for i, testCase := range testCases {
|
|
if compareThresholdValue(testCase.a, testCase.b) != testCase.equal ||
|
|
compareThresholdValue(testCase.b, testCase.a) != testCase.equal {
|
|
t.Errorf("Test case: %v failed", i)
|
|
}
|
|
}
|
|
}
|
|
|
|
// newPodInodeStats returns stats with specified usage amounts.
|
|
func newPodInodeStats(pod *v1.Pod, rootFsInodesUsed, logsInodesUsed, perLocalVolumeInodesUsed resource.Quantity) statsapi.PodStats {
|
|
result := statsapi.PodStats{
|
|
PodRef: statsapi.PodReference{
|
|
Name: pod.Name, Namespace: pod.Namespace, UID: string(pod.UID),
|
|
},
|
|
}
|
|
rootFsUsed := uint64(rootFsInodesUsed.Value())
|
|
logsUsed := uint64(logsInodesUsed.Value())
|
|
for range pod.Spec.Containers {
|
|
result.Containers = append(result.Containers, statsapi.ContainerStats{
|
|
Rootfs: &statsapi.FsStats{
|
|
InodesUsed: &rootFsUsed,
|
|
},
|
|
Logs: &statsapi.FsStats{
|
|
InodesUsed: &logsUsed,
|
|
},
|
|
})
|
|
}
|
|
|
|
perLocalVolumeUsed := uint64(perLocalVolumeInodesUsed.Value())
|
|
for _, volumeName := range localVolumeNames(pod) {
|
|
result.VolumeStats = append(result.VolumeStats, statsapi.VolumeStats{
|
|
Name: volumeName,
|
|
FsStats: statsapi.FsStats{
|
|
InodesUsed: &perLocalVolumeUsed,
|
|
},
|
|
})
|
|
}
|
|
return result
|
|
}
|
|
|
|
// newPodDiskStats returns stats with specified usage amounts.
|
|
func newPodDiskStats(pod *v1.Pod, rootFsUsed, logsUsed, perLocalVolumeUsed resource.Quantity) statsapi.PodStats {
|
|
result := statsapi.PodStats{
|
|
PodRef: statsapi.PodReference{
|
|
Name: pod.Name, Namespace: pod.Namespace, UID: string(pod.UID),
|
|
},
|
|
}
|
|
|
|
rootFsUsedBytes := uint64(rootFsUsed.Value())
|
|
logsUsedBytes := uint64(logsUsed.Value())
|
|
for range pod.Spec.Containers {
|
|
result.Containers = append(result.Containers, statsapi.ContainerStats{
|
|
Rootfs: &statsapi.FsStats{
|
|
UsedBytes: &rootFsUsedBytes,
|
|
},
|
|
Logs: &statsapi.FsStats{
|
|
UsedBytes: &logsUsedBytes,
|
|
},
|
|
})
|
|
}
|
|
|
|
perLocalVolumeUsedBytes := uint64(perLocalVolumeUsed.Value())
|
|
for _, volumeName := range localVolumeNames(pod) {
|
|
result.VolumeStats = append(result.VolumeStats, statsapi.VolumeStats{
|
|
Name: volumeName,
|
|
FsStats: statsapi.FsStats{
|
|
UsedBytes: &perLocalVolumeUsedBytes,
|
|
},
|
|
})
|
|
}
|
|
|
|
return result
|
|
}
|
|
|
|
func newPodMemoryStats(pod *v1.Pod, workingSet resource.Quantity) statsapi.PodStats {
|
|
result := statsapi.PodStats{
|
|
PodRef: statsapi.PodReference{
|
|
Name: pod.Name, Namespace: pod.Namespace, UID: string(pod.UID),
|
|
},
|
|
}
|
|
for range pod.Spec.Containers {
|
|
workingSetBytes := uint64(workingSet.Value())
|
|
result.Containers = append(result.Containers, statsapi.ContainerStats{
|
|
Memory: &statsapi.MemoryStats{
|
|
WorkingSetBytes: &workingSetBytes,
|
|
},
|
|
})
|
|
}
|
|
return result
|
|
}
|
|
|
|
func newResourceList(cpu, memory string) v1.ResourceList {
|
|
res := v1.ResourceList{}
|
|
if cpu != "" {
|
|
res[v1.ResourceCPU] = resource.MustParse(cpu)
|
|
}
|
|
if memory != "" {
|
|
res[v1.ResourceMemory] = resource.MustParse(memory)
|
|
}
|
|
return res
|
|
}
|
|
|
|
func newResourceRequirements(requests, limits v1.ResourceList) v1.ResourceRequirements {
|
|
res := v1.ResourceRequirements{}
|
|
res.Requests = requests
|
|
res.Limits = limits
|
|
return res
|
|
}
|
|
|
|
func newContainer(name string, requests v1.ResourceList, limits v1.ResourceList) v1.Container {
|
|
return v1.Container{
|
|
Name: name,
|
|
Resources: newResourceRequirements(requests, limits),
|
|
}
|
|
}
|
|
|
|
func newVolume(name string, volumeSource v1.VolumeSource) v1.Volume {
|
|
return v1.Volume{
|
|
Name: name,
|
|
VolumeSource: volumeSource,
|
|
}
|
|
}
|
|
|
|
// newPod uses the name as the uid. Make names unique for testing.
|
|
func newPod(name string, containers []v1.Container, volumes []v1.Volume) *v1.Pod {
|
|
return &v1.Pod{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: name,
|
|
UID: types.UID(name),
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Containers: containers,
|
|
Volumes: volumes,
|
|
},
|
|
}
|
|
}
|
|
|
|
// nodeConditionList is a simple alias to support equality checking independent of order
|
|
type nodeConditionList []v1.NodeConditionType
|
|
|
|
// Equal adds the ability to check equality between two lists of node conditions.
|
|
func (s1 nodeConditionList) Equal(s2 nodeConditionList) bool {
|
|
if len(s1) != len(s2) {
|
|
return false
|
|
}
|
|
for _, item := range s1 {
|
|
if !hasNodeCondition(s2, item) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// thresholdList is a simple alias to support equality checking independent of order
|
|
type thresholdList []evictionapi.Threshold
|
|
|
|
// Equal adds the ability to check equality between two lists of node conditions.
|
|
func (s1 thresholdList) Equal(s2 thresholdList) bool {
|
|
if len(s1) != len(s2) {
|
|
return false
|
|
}
|
|
for _, item := range s1 {
|
|
if !hasThreshold(s2, item) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|