kubernetes most_allocated_test 源码

2022-09-18
浏览 (308)

kubernetes most_allocated_test 代码

文件路径：/pkg/scheduler/framework/plugins/noderesources/most_allocated_test.go

/*
Copyright 2019 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package noderesources

import (
	"context"
	"testing"

	"github.com/google/go-cmp/cmp"
	v1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/util/validation/field"
	"k8s.io/kubernetes/pkg/scheduler/apis/config"
	"k8s.io/kubernetes/pkg/scheduler/framework"
	plfeature "k8s.io/kubernetes/pkg/scheduler/framework/plugins/feature"
	"k8s.io/kubernetes/pkg/scheduler/framework/runtime"
	"k8s.io/kubernetes/pkg/scheduler/internal/cache"
	st "k8s.io/kubernetes/pkg/scheduler/testing"
)

func TestMostAllocatedScoringStrategy(t *testing.T) {
	defaultResources := []config.ResourceSpec{
		{Name: string(v1.ResourceCPU), Weight: 1},
		{Name: string(v1.ResourceMemory), Weight: 1},
	}
	extendedRes := "abc.com/xyz"
	extendedResourceLeastAllocatedSet := []config.ResourceSpec{
		{Name: string(v1.ResourceCPU), Weight: 1},
		{Name: string(v1.ResourceMemory), Weight: 1},
		{Name: extendedRes, Weight: 1},
	}

	tests := []struct {
		name           string
		requestedPod   *v1.Pod
		nodes          []*v1.Node
		existingPods   []*v1.Pod
		expectedScores framework.NodeScoreList
		resources      []config.ResourceSpec
		wantErrs       field.ErrorList
	}{
		{
			// Node1 scores (used resources) on 0-MaxNodeScore scale
			// CPU Score: (0 * MaxNodeScore)  / 4000 = 0
			// Memory Score: (0 * MaxNodeScore) / 10000 = 0
			// Node1 Score: (0 + 0) / 2 = 0
			// Node2 scores (used resources) on 0-MaxNodeScore scale
			// CPU Score: (0 * MaxNodeScore) / 4000 = 0
			// Memory Score: (0 * MaxNodeScore) / 10000 = 0
			// Node2 Score: (0 + 0) / 2 = 0
			name:         "nothing scheduled, nothing requested",
			requestedPod: st.MakePod().Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
			},
			existingPods:   nil,
			expectedScores: []framework.NodeScore{{Name: "node1", Score: framework.MinNodeScore}, {Name: "node2", Score: framework.MinNodeScore}},
			resources:      defaultResources,
		},
		{
			// Node1 scores on 0-MaxNodeScore scale
			// CPU Score: (3000 * MaxNodeScore) / 4000 = 75
			// Memory Score: (5000 * MaxNodeScore) / 10000 = 50
			// Node1 Score: (75 + 50) / 2 = 6
			// Node2 scores on 0-MaxNodeScore scale
			// CPU Score: (3000 * MaxNodeScore) / 6000 = 50
			// Memory Score: (5000 * MaxNodeScore) / 10000 = 50
			// Node2 Score: (50 + 50) / 2 = 50
			name: "nothing scheduled, resources requested, differently sized nodes",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000"}).Obj(),
			},
			existingPods:   nil,
			expectedScores: []framework.NodeScore{{Name: "node1", Score: 62}, {Name: "node2", Score: 50}},
			resources:      defaultResources,
		},
		{
			name: "Resources not set, nothing scheduled, resources requested, differently sized nodes",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000"}).Obj(),
			},
			existingPods:   nil,
			expectedScores: []framework.NodeScore{{Name: "node1", Score: framework.MinNodeScore}, {Name: "node2", Score: framework.MinNodeScore}},
			resources:      nil,
		},
		{
			// Node1 scores on 0-MaxNodeScore scale
			// CPU Score: (6000 * MaxNodeScore) / 10000 = 60
			// Memory Score: (0 * MaxNodeScore) / 20000 = 0
			// Node1 Score: (60 + 0) / 2 = 30
			// Node2 scores on 0-MaxNodeScore scale
			// CPU Score: (6000 * MaxNodeScore) / 10000 = 60
			// Memory Score: (5000 * MaxNodeScore) / 20000 = 25
			// Node2 Score: (60 + 25) / 2 = 42
			name:         "no resources requested, pods scheduled with resources",
			requestedPod: st.MakePod().Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "10000", "memory": "20000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "10000", "memory": "20000"}).Obj(),
			},
			existingPods: []*v1.Pod{
				st.MakePod().Node("node1").Req(map[v1.ResourceName]string{"cpu": "3000", "memory": "0"}).Obj(),
				st.MakePod().Node("node1").Req(map[v1.ResourceName]string{"cpu": "3000", "memory": "0"}).Obj(),
				st.MakePod().Node("node2").Req(map[v1.ResourceName]string{"cpu": "3000", "memory": "0"}).Obj(),
				st.MakePod().Node("node2").Req(map[v1.ResourceName]string{"cpu": "3000", "memory": "5000"}).Obj(),
			},
			expectedScores: []framework.NodeScore{{Name: "node1", Score: 30}, {Name: "node2", Score: 42}},
			resources:      defaultResources,
		},
		{
			// Node1 scores on 0-MaxNodeScore scale
			// CPU Score: (6000 * MaxNodeScore) / 10000 = 60
			// Memory Score: (5000 * MaxNodeScore) / 20000 = 25
			// Node1 Score: (60 + 25) / 2 = 42
			// Node2 scores on 0-MaxNodeScore scale
			// CPU Score: (6000 * MaxNodeScore) / 10000 = 60
			// Memory Score: (10000 * MaxNodeScore) / 20000 = 50
			// Node2 Score: (60 + 50) / 2 = 55
			name: "resources requested, pods scheduled with resources",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "10000", "memory": "20000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "10000", "memory": "20000"}).Obj(),
			},
			existingPods: []*v1.Pod{
				st.MakePod().Node("node1").Req(map[v1.ResourceName]string{"cpu": "3000", "memory": "0"}).Obj(),
				st.MakePod().Node("node2").Req(map[v1.ResourceName]string{"cpu": "3000", "memory": "5000"}).Obj(),
			},
			expectedScores: []framework.NodeScore{{Name: "node1", Score: 42}, {Name: "node2", Score: 55}},
			resources:      defaultResources,
		},
		{
			// Node1 scores on 0-MaxNodeScore scale
			// CPU Score: 5000 * MaxNodeScore / 5000 return 100
			// Memory Score: (9000 * MaxNodeScore) / 10000 = 90
			// Node1 Score: (100 + 90) / 2 = 95
			// Node2 scores on 0-MaxNodeScore scale
			// CPU Score: (5000 * MaxNodeScore) / 10000 = 50
			// Memory Score: 8000 *MaxNodeScore / 8000 return 100
			// Node2 Score: (50 + 100) / 2 = 75
			name: "resources requested equal node capacity",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "4000"}).
				Req(map[v1.ResourceName]string{"cpu": "3000", "memory": "5000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "5000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "10000", "memory": "9000"}).Obj(),
			},
			existingPods:   nil,
			expectedScores: []framework.NodeScore{{Name: "node1", Score: 95}, {Name: "node2", Score: 75}},
			resources:      defaultResources,
		},
		{
			// CPU Score: (3000 *100) / 4000 = 75
			// Memory Score: (5000 *100) / 10000 = 50
			// Node1 Score: (75 * 1 + 50 * 2) / (1 + 2) = 58
			// CPU Score: (3000 *100) / 6000 = 50
			// Memory Score: (5000 *100) / 10000 = 50
			// Node2 Score: (50 * 1 + 50 * 2) / (1 + 2) = 50
			name: "nothing scheduled, resources requested, differently sized nodes",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000"}).Obj(),
			},
			existingPods:   nil,
			expectedScores: []framework.NodeScore{{Name: "node1", Score: 58}, {Name: "node2", Score: 50}},
			resources: []config.ResourceSpec{
				{Name: "memory", Weight: 2},
				{Name: "cpu", Weight: 1},
			},
		},
		{
			// Node1 scores on 0-MaxNodeScore scale
			// CPU Fraction: 300 / 250 = 100%
			// Memory Fraction: 600 / 1000 = 60%
			// Node1 Score: (100 + 60) / 2 = 80
			// Node2 scores on 0-MaxNodeScore scale
			// CPU Fraction: 100 / 250 = 40%
			// Memory Fraction: 200 / 1000 = 20%
			// Node2 Score: (20 + 40) / 2 = 30
			name:         "no resources requested, pods scheduled, nonzero request for resource",
			requestedPod: st.MakePod().Container("container").Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "250m", "memory": "1000Mi"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "250m", "memory": "1000Mi"}).Obj(),
			},
			existingPods: []*v1.Pod{
				st.MakePod().Node("node1").Container("container").Obj(),
				st.MakePod().Node("node1").Container("container").Obj(),
			},
			expectedScores: []framework.NodeScore{{Name: "node1", Score: 80}, {Name: "node2", Score: 30}},
			resources:      defaultResources,
		},
		{
			// resource with negative weight is not allowed
			name: "resource with negative weight",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
			},
			resources: []config.ResourceSpec{
				{Name: "memory", Weight: -1},
				{Name: "cpu", Weight: 1},
			},
			wantErrs: field.ErrorList{
				&field.Error{
					Type:  field.ErrorTypeInvalid,
					Field: "scoringStrategy.resources[0].weight",
				},
			},
		},
		{
			// resource with zero weight is not allowed
			name: "resource with zero weight",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
			},
			resources: []config.ResourceSpec{
				{Name: "memory", Weight: 1},
				{Name: "cpu", Weight: 0},
			},
			wantErrs: field.ErrorList{
				&field.Error{
					Type:  field.ErrorTypeInvalid,
					Field: "scoringStrategy.resources[1].weight",
				},
			},
		},
		{
			// resource weight should be less than MaxNodeScore
			name: "resource weight larger than MaxNodeScore",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "4000", "memory": "10000"}).Obj(),
			},
			resources: []config.ResourceSpec{
				{Name: "memory", Weight: 101},
			},
			wantErrs: field.ErrorList{
				&field.Error{
					Type:  field.ErrorTypeInvalid,
					Field: "scoringStrategy.resources[0].weight",
				},
			},
		},
		{
			// Bypass extended resource if the pod does not request.
			// For both nodes: cpuScore and memScore are 50
			// Given that extended resource score are intentionally bypassed,
			// the final scores are:
			// - node1: (50 + 50) / 2 = 50
			// - node2: (50 + 50) / 2 = 50
			name: "bypass extended resource if the pod does not request",
			requestedPod: st.MakePod().
				Req(map[v1.ResourceName]string{"cpu": "1000", "memory": "2000"}).
				Req(map[v1.ResourceName]string{"cpu": "2000", "memory": "3000"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000", v1.ResourceName(extendedRes): "4"}).Obj(),
			},
			resources:      extendedResourceLeastAllocatedSet,
			existingPods:   nil,
			expectedScores: []framework.NodeScore{{Name: "node1", Score: 50}, {Name: "node2", Score: 50}},
		},
		{
			// Honor extended resource if the pod requests.
			// For both nodes: cpuScore and memScore are 50.
			// In terms of extended resource score:
			// - node1 get: 2 / 4 * 100 = 50
			// - node2 get: 2 / 10 * 100 = 20
			// So the final scores are:
			// - node1: (50 + 50 + 50) / 3 = 50
			// - node2: (50 + 50 + 20) / 3 = 40
			name: "honor extended resource if the pod request",
			requestedPod: st.MakePod().Node("node1").
				Req(map[v1.ResourceName]string{"cpu": "3000", "memory": "5000", v1.ResourceName(extendedRes): "2"}).
				Obj(),
			nodes: []*v1.Node{
				st.MakeNode().Name("node1").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000", v1.ResourceName(extendedRes): "4"}).Obj(),
				st.MakeNode().Name("node2").Capacity(map[v1.ResourceName]string{"cpu": "6000", "memory": "10000", v1.ResourceName(extendedRes): "10"}).Obj(),
			},
			resources:      extendedResourceLeastAllocatedSet,
			existingPods:   nil,
			expectedScores: []framework.NodeScore{{Name: "node1", Score: 50}, {Name: "node2", Score: 40}},
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			ctx, cancel := context.WithCancel(context.Background())
			defer cancel()

			state := framework.NewCycleState()
			snapshot := cache.NewSnapshot(test.existingPods, test.nodes)
			fh, _ := runtime.NewFramework(nil, nil, ctx.Done(), runtime.WithSnapshotSharedLister(snapshot))

			p, err := NewFit(
				&config.NodeResourcesFitArgs{
					ScoringStrategy: &config.ScoringStrategy{
						Type:      config.MostAllocated,
						Resources: test.resources,
					},
				}, fh, plfeature.Features{})

			if diff := cmp.Diff(test.wantErrs.ToAggregate(), err, ignoreBadValueDetail); diff != "" {
				t.Fatalf("got err (-want,+got):\n%s", diff)
			}
			if err != nil {
				return
			}

			var gotScores framework.NodeScoreList
			for _, n := range test.nodes {
				score, status := p.(framework.ScorePlugin).Score(ctx, state, test.requestedPod, n.Name)
				if !status.IsSuccess() {
					t.Errorf("unexpected error: %v", status)
				}
				gotScores = append(gotScores, framework.NodeScore{Name: n.Name, Score: score})
			}

			if diff := cmp.Diff(test.expectedScores, gotScores); diff != "" {
				t.Errorf("Unexpected scores (-want,+got):\n%s", diff)
			}
		})
	}
}

相关信息

kubernetes 源码目录

相关文章

kubernetes balanced_allocation 源码

kubernetes balanced_allocation_test 源码

kubernetes fit 源码

kubernetes fit_test 源码

kubernetes least_allocated 源码

kubernetes least_allocated_test 源码

kubernetes most_allocated 源码

kubernetes requested_to_capacity_ratio 源码

kubernetes requested_to_capacity_ratio_test 源码

kubernetes resource_allocation 源码

0 赞

所属分类： 后端技术
本文标签： golang docker
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/8583b961ba694db58c21654523d41b2b

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
6、 harmony 鸿蒙初识ArkTS语言
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...