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predicate_test.go
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/*
Copyright 2014 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 predicates
import (
"fmt"
"os"
"reflect"
"strconv"
"strings"
"testing"
v1 "k8s.io/api/core/v1"
storagev1 "k8s.io/api/storage/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/sets"
utilfeature "k8s.io/apiserver/pkg/util/feature"
featuregatetesting "k8s.io/component-base/featuregate/testing"
api "k8s.io/kubernetes/pkg/apis/core"
v1helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
"k8s.io/kubernetes/pkg/features"
fakelisters "k8s.io/kubernetes/pkg/scheduler/listers/fake"
schedulernodeinfo "k8s.io/kubernetes/pkg/scheduler/nodeinfo"
nodeinfosnapshot "k8s.io/kubernetes/pkg/scheduler/nodeinfo/snapshot"
st "k8s.io/kubernetes/pkg/scheduler/testing"
)
var (
extendedResourceA = v1.ResourceName("example.com/aaa")
extendedResourceB = v1.ResourceName("example.com/bbb")
kubernetesIOResourceA = v1.ResourceName("kubernetes.io/something")
kubernetesIOResourceB = v1.ResourceName("subdomain.kubernetes.io/something")
hugePageResourceA = v1helper.HugePageResourceName(resource.MustParse("2Mi"))
)
func makeResources(milliCPU, memory, pods, extendedA, storage, hugePageA int64) v1.NodeResources {
return v1.NodeResources{
Capacity: v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(milliCPU, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(memory, resource.BinarySI),
v1.ResourcePods: *resource.NewQuantity(pods, resource.DecimalSI),
extendedResourceA: *resource.NewQuantity(extendedA, resource.DecimalSI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(storage, resource.BinarySI),
hugePageResourceA: *resource.NewQuantity(hugePageA, resource.BinarySI),
},
}
}
func makeAllocatableResources(milliCPU, memory, pods, extendedA, storage, hugePageA int64) v1.ResourceList {
return v1.ResourceList{
v1.ResourceCPU: *resource.NewMilliQuantity(milliCPU, resource.DecimalSI),
v1.ResourceMemory: *resource.NewQuantity(memory, resource.BinarySI),
v1.ResourcePods: *resource.NewQuantity(pods, resource.DecimalSI),
extendedResourceA: *resource.NewQuantity(extendedA, resource.DecimalSI),
v1.ResourceEphemeralStorage: *resource.NewQuantity(storage, resource.BinarySI),
hugePageResourceA: *resource.NewQuantity(hugePageA, resource.BinarySI),
}
}
func newResourcePod(usage ...schedulernodeinfo.Resource) *v1.Pod {
containers := []v1.Container{}
for _, req := range usage {
containers = append(containers, v1.Container{
Resources: v1.ResourceRequirements{Requests: req.ResourceList()},
})
}
return &v1.Pod{
Spec: v1.PodSpec{
Containers: containers,
},
}
}
func newResourceInitPod(pod *v1.Pod, usage ...schedulernodeinfo.Resource) *v1.Pod {
pod.Spec.InitContainers = newResourcePod(usage...).Spec.Containers
return pod
}
func newResourceOverheadPod(pod *v1.Pod, overhead v1.ResourceList) *v1.Pod {
pod.Spec.Overhead = overhead
return pod
}
func TestPodFitsResources(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.PodOverhead, true)()
enoughPodsTests := []struct {
pod *v1.Pod
nodeInfo *schedulernodeinfo.NodeInfo
fits bool
name string
reasons []PredicateFailureReason
ignoredExtendedResources sets.String
}{
{
pod: &v1.Pod{},
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 10, Memory: 20})),
fits: true,
name: "no resources requested always fits",
},
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 10, Memory: 20})),
fits: false,
name: "too many resources fails",
reasons: []PredicateFailureReason{
NewInsufficientResourceError(v1.ResourceCPU, 1, 10, 10),
NewInsufficientResourceError(v1.ResourceMemory, 1, 20, 20),
},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}), schedulernodeinfo.Resource{MilliCPU: 3, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 8, Memory: 19})),
fits: false,
name: "too many resources fails due to init container cpu",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourceCPU, 3, 8, 10)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}), schedulernodeinfo.Resource{MilliCPU: 3, Memory: 1}, schedulernodeinfo.Resource{MilliCPU: 2, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 8, Memory: 19})),
fits: false,
name: "too many resources fails due to highest init container cpu",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourceCPU, 3, 8, 10)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}), schedulernodeinfo.Resource{MilliCPU: 1, Memory: 3}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 9, Memory: 19})),
fits: false,
name: "too many resources fails due to init container memory",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourceMemory, 3, 19, 20)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}), schedulernodeinfo.Resource{MilliCPU: 1, Memory: 3}, schedulernodeinfo.Resource{MilliCPU: 1, Memory: 2}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 9, Memory: 19})),
fits: false,
name: "too many resources fails due to highest init container memory",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourceMemory, 3, 19, 20)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}), schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 9, Memory: 19})),
fits: true,
name: "init container fits because it's the max, not sum, of containers and init containers",
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}), schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}, schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 9, Memory: 19})),
fits: true,
name: "multiple init containers fit because it's the max, not sum, of containers and init containers",
},
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 5})),
fits: true,
name: "both resources fit",
},
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 2, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 9, Memory: 5})),
fits: false,
name: "one resource memory fits",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourceCPU, 2, 9, 10)},
},
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 2}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 19})),
fits: false,
name: "one resource cpu fits",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourceMemory, 2, 19, 20)},
},
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 19})),
fits: true,
name: "equal edge case",
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{MilliCPU: 4, Memory: 1}), schedulernodeinfo.Resource{MilliCPU: 5, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 19})),
fits: true,
name: "equal edge case for init container",
},
{
pod: newResourcePod(schedulernodeinfo.Resource{ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 1}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(newResourcePod(schedulernodeinfo.Resource{})),
fits: true,
name: "extended resource fits",
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{}), schedulernodeinfo.Resource{ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 1}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(newResourcePod(schedulernodeinfo.Resource{})),
fits: true,
name: "extended resource fits for init container",
},
{
pod: newResourcePod(
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 10}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 0}})),
fits: false,
name: "extended resource capacity enforced",
reasons: []PredicateFailureReason{NewInsufficientResourceError(extendedResourceA, 10, 0, 5)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{}),
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 10}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 0}})),
fits: false,
name: "extended resource capacity enforced for init container",
reasons: []PredicateFailureReason{NewInsufficientResourceError(extendedResourceA, 10, 0, 5)},
},
{
pod: newResourcePod(
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 1}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 5}})),
fits: false,
name: "extended resource allocatable enforced",
reasons: []PredicateFailureReason{NewInsufficientResourceError(extendedResourceA, 1, 5, 5)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{}),
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 1}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 5}})),
fits: false,
name: "extended resource allocatable enforced for init container",
reasons: []PredicateFailureReason{NewInsufficientResourceError(extendedResourceA, 1, 5, 5)},
},
{
pod: newResourcePod(
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 3}},
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 3}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 2}})),
fits: false,
name: "extended resource allocatable enforced for multiple containers",
reasons: []PredicateFailureReason{NewInsufficientResourceError(extendedResourceA, 6, 2, 5)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{}),
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 3}},
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 3}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 2}})),
fits: true,
name: "extended resource allocatable admits multiple init containers",
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{}),
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 6}},
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 3}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{extendedResourceA: 2}})),
fits: false,
name: "extended resource allocatable enforced for multiple init containers",
reasons: []PredicateFailureReason{NewInsufficientResourceError(extendedResourceA, 6, 2, 5)},
},
{
pod: newResourcePod(
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceB: 1}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0})),
fits: false,
name: "extended resource allocatable enforced for unknown resource",
reasons: []PredicateFailureReason{NewInsufficientResourceError(extendedResourceB, 1, 0, 0)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{}),
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceB: 1}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0})),
fits: false,
name: "extended resource allocatable enforced for unknown resource for init container",
reasons: []PredicateFailureReason{NewInsufficientResourceError(extendedResourceB, 1, 0, 0)},
},
{
pod: newResourcePod(
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{kubernetesIOResourceA: 10}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0})),
fits: false,
name: "kubernetes.io resource capacity enforced",
reasons: []PredicateFailureReason{NewInsufficientResourceError(kubernetesIOResourceA, 10, 0, 0)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{}),
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{kubernetesIOResourceB: 10}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0})),
fits: false,
name: "kubernetes.io resource capacity enforced for init container",
reasons: []PredicateFailureReason{NewInsufficientResourceError(kubernetesIOResourceB, 10, 0, 0)},
},
{
pod: newResourcePod(
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{hugePageResourceA: 10}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{hugePageResourceA: 0}})),
fits: false,
name: "hugepages resource capacity enforced",
reasons: []PredicateFailureReason{NewInsufficientResourceError(hugePageResourceA, 10, 0, 5)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{}),
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{hugePageResourceA: 10}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{hugePageResourceA: 0}})),
fits: false,
name: "hugepages resource capacity enforced for init container",
reasons: []PredicateFailureReason{NewInsufficientResourceError(hugePageResourceA, 10, 0, 5)},
},
{
pod: newResourcePod(
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{hugePageResourceA: 3}},
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{hugePageResourceA: 3}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0, ScalarResources: map[v1.ResourceName]int64{hugePageResourceA: 2}})),
fits: false,
name: "hugepages resource allocatable enforced for multiple containers",
reasons: []PredicateFailureReason{NewInsufficientResourceError(hugePageResourceA, 6, 2, 5)},
},
{
pod: newResourcePod(
schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1, ScalarResources: map[v1.ResourceName]int64{extendedResourceB: 1}}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 0, Memory: 0})),
fits: true,
ignoredExtendedResources: sets.NewString(string(extendedResourceB)),
name: "skip checking ignored extended resource",
},
{
pod: newResourceOverheadPod(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
v1.ResourceList{v1.ResourceCPU: resource.MustParse("3m"), v1.ResourceMemory: resource.MustParse("13")},
),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 5})),
fits: true,
ignoredExtendedResources: sets.NewString(string(extendedResourceB)),
name: "resources + pod overhead fits",
},
{
pod: newResourceOverheadPod(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
v1.ResourceList{v1.ResourceCPU: resource.MustParse("1m"), v1.ResourceMemory: resource.MustParse("15")},
),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 5})),
fits: false,
ignoredExtendedResources: sets.NewString(string(extendedResourceB)),
name: "requests + overhead does not fit for memory",
reasons: []PredicateFailureReason{
NewInsufficientResourceError(v1.ResourceMemory, 16, 5, 20),
},
},
}
for _, test := range enoughPodsTests {
t.Run(test.name, func(t *testing.T) {
node := v1.Node{Status: v1.NodeStatus{Capacity: makeResources(10, 20, 32, 5, 20, 5).Capacity, Allocatable: makeAllocatableResources(10, 20, 32, 5, 20, 5)}}
test.nodeInfo.SetNode(&node)
RegisterPredicateMetadataProducerWithExtendedResourceOptions(test.ignoredExtendedResources)
meta := GetPredicateMetadata(test.pod, nil)
fits, reasons, err := PodFitsResources(test.pod, meta, test.nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !fits && !reflect.DeepEqual(reasons, test.reasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, test.reasons)
}
if fits != test.fits {
t.Errorf("expected: %v got %v", test.fits, fits)
}
})
}
notEnoughPodsTests := []struct {
pod *v1.Pod
nodeInfo *schedulernodeinfo.NodeInfo
fits bool
name string
reasons []PredicateFailureReason
}{
{
pod: &v1.Pod{},
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 10, Memory: 20})),
fits: false,
name: "even without specified resources predicate fails when there's no space for additional pod",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourcePods, 1, 1, 1)},
},
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 5})),
fits: false,
name: "even if both resources fit predicate fails when there's no space for additional pod",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourcePods, 1, 1, 1)},
},
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 19})),
fits: false,
name: "even for equal edge case predicate fails when there's no space for additional pod",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourcePods, 1, 1, 1)},
},
{
pod: newResourceInitPod(newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 1}), schedulernodeinfo.Resource{MilliCPU: 5, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 5, Memory: 19})),
fits: false,
name: "even for equal edge case predicate fails when there's no space for additional pod due to init container",
reasons: []PredicateFailureReason{NewInsufficientResourceError(v1.ResourcePods, 1, 1, 1)},
},
}
for _, test := range notEnoughPodsTests {
t.Run(test.name, func(t *testing.T) {
node := v1.Node{Status: v1.NodeStatus{Capacity: v1.ResourceList{}, Allocatable: makeAllocatableResources(10, 20, 1, 0, 0, 0)}}
test.nodeInfo.SetNode(&node)
fits, reasons, err := PodFitsResources(test.pod, GetPredicateMetadata(test.pod, nil), test.nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !fits && !reflect.DeepEqual(reasons, test.reasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, test.reasons)
}
if fits != test.fits {
t.Errorf("expected: %v got %v", test.fits, fits)
}
})
}
storagePodsTests := []struct {
pod *v1.Pod
nodeInfo *schedulernodeinfo.NodeInfo
fits bool
name string
reasons []PredicateFailureReason
}{
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 10, Memory: 10})),
fits: false,
name: "due to container scratch disk",
reasons: []PredicateFailureReason{
NewInsufficientResourceError(v1.ResourceCPU, 1, 10, 10),
},
},
{
pod: newResourcePod(schedulernodeinfo.Resource{MilliCPU: 1, Memory: 1}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 2, Memory: 10})),
fits: true,
name: "pod fit",
},
{
pod: newResourcePod(schedulernodeinfo.Resource{EphemeralStorage: 25}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 2, Memory: 2})),
fits: false,
name: "storage ephemeral local storage request exceeds allocatable",
reasons: []PredicateFailureReason{
NewInsufficientResourceError(v1.ResourceEphemeralStorage, 25, 0, 20),
},
},
{
pod: newResourcePod(schedulernodeinfo.Resource{EphemeralStorage: 10}),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newResourcePod(schedulernodeinfo.Resource{MilliCPU: 2, Memory: 2})),
fits: true,
name: "pod fits",
},
}
for _, test := range storagePodsTests {
t.Run(test.name, func(t *testing.T) {
node := v1.Node{Status: v1.NodeStatus{Capacity: makeResources(10, 20, 32, 5, 20, 5).Capacity, Allocatable: makeAllocatableResources(10, 20, 32, 5, 20, 5)}}
test.nodeInfo.SetNode(&node)
fits, reasons, err := PodFitsResources(test.pod, GetPredicateMetadata(test.pod, nil), test.nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !fits && !reflect.DeepEqual(reasons, test.reasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, test.reasons)
}
if fits != test.fits {
t.Errorf("expected: %v got %v", test.fits, fits)
}
})
}
}
func TestPodFitsHost(t *testing.T) {
tests := []struct {
pod *v1.Pod
node *v1.Node
fits bool
name string
}{
{
pod: &v1.Pod{},
node: &v1.Node{},
fits: true,
name: "no host specified",
},
{
pod: &v1.Pod{
Spec: v1.PodSpec{
NodeName: "foo",
},
},
node: &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
},
fits: true,
name: "host matches",
},
{
pod: &v1.Pod{
Spec: v1.PodSpec{
NodeName: "bar",
},
},
node: &v1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
},
fits: false,
name: "host doesn't match",
},
}
expectedFailureReasons := []PredicateFailureReason{ErrPodNotMatchHostName}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
nodeInfo := schedulernodeinfo.NewNodeInfo()
nodeInfo.SetNode(test.node)
fits, reasons, err := PodFitsHost(test.pod, GetPredicateMetadata(test.pod, nil), nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !fits && !reflect.DeepEqual(reasons, expectedFailureReasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, expectedFailureReasons)
}
if fits != test.fits {
t.Errorf("unexpected difference: expected: %v got %v", test.fits, fits)
}
})
}
}
func newPod(host string, hostPortInfos ...string) *v1.Pod {
networkPorts := []v1.ContainerPort{}
for _, portInfo := range hostPortInfos {
splited := strings.Split(portInfo, "/")
hostPort, _ := strconv.Atoi(splited[2])
networkPorts = append(networkPorts, v1.ContainerPort{
HostIP: splited[1],
HostPort: int32(hostPort),
Protocol: v1.Protocol(splited[0]),
})
}
return &v1.Pod{
Spec: v1.PodSpec{
NodeName: host,
Containers: []v1.Container{
{
Ports: networkPorts,
},
},
},
}
}
func TestPodFitsHostPorts(t *testing.T) {
tests := []struct {
pod *v1.Pod
nodeInfo *schedulernodeinfo.NodeInfo
fits bool
name string
}{
{
pod: &v1.Pod{},
nodeInfo: schedulernodeinfo.NewNodeInfo(),
fits: true,
name: "nothing running",
},
{
pod: newPod("m1", "UDP/127.0.0.1/8080"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "UDP/127.0.0.1/9090")),
fits: true,
name: "other port",
},
{
pod: newPod("m1", "UDP/127.0.0.1/8080"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "UDP/127.0.0.1/8080")),
fits: false,
name: "same udp port",
},
{
pod: newPod("m1", "TCP/127.0.0.1/8080"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/127.0.0.1/8080")),
fits: false,
name: "same tcp port",
},
{
pod: newPod("m1", "TCP/127.0.0.1/8080"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/127.0.0.2/8080")),
fits: true,
name: "different host ip",
},
{
pod: newPod("m1", "UDP/127.0.0.1/8080"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/127.0.0.1/8080")),
fits: true,
name: "different protocol",
},
{
pod: newPod("m1", "UDP/127.0.0.1/8000", "UDP/127.0.0.1/8080"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "UDP/127.0.0.1/8080")),
fits: false,
name: "second udp port conflict",
},
{
pod: newPod("m1", "TCP/127.0.0.1/8001", "UDP/127.0.0.1/8080"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/127.0.0.1/8001", "UDP/127.0.0.1/8081")),
fits: false,
name: "first tcp port conflict",
},
{
pod: newPod("m1", "TCP/0.0.0.0/8001"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/127.0.0.1/8001")),
fits: false,
name: "first tcp port conflict due to 0.0.0.0 hostIP",
},
{
pod: newPod("m1", "TCP/10.0.10.10/8001", "TCP/0.0.0.0/8001"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/127.0.0.1/8001")),
fits: false,
name: "TCP hostPort conflict due to 0.0.0.0 hostIP",
},
{
pod: newPod("m1", "TCP/127.0.0.1/8001"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/0.0.0.0/8001")),
fits: false,
name: "second tcp port conflict to 0.0.0.0 hostIP",
},
{
pod: newPod("m1", "UDP/127.0.0.1/8001"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/0.0.0.0/8001")),
fits: true,
name: "second different protocol",
},
{
pod: newPod("m1", "UDP/127.0.0.1/8001"),
nodeInfo: schedulernodeinfo.NewNodeInfo(
newPod("m1", "TCP/0.0.0.0/8001", "UDP/0.0.0.0/8001")),
fits: false,
name: "UDP hostPort conflict due to 0.0.0.0 hostIP",
},
}
expectedFailureReasons := []PredicateFailureReason{ErrPodNotFitsHostPorts}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
fits, reasons, err := PodFitsHostPorts(test.pod, GetPredicateMetadata(test.pod, nil), test.nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !fits && !reflect.DeepEqual(reasons, expectedFailureReasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, expectedFailureReasons)
}
if test.fits != fits {
t.Errorf("expected %v, saw %v", test.fits, fits)
}
})
}
}
func TestGCEDiskConflicts(t *testing.T) {
volState := v1.PodSpec{
Volumes: []v1.Volume{
{
VolumeSource: v1.VolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
PDName: "foo",
},
},
},
},
}
volState2 := v1.PodSpec{
Volumes: []v1.Volume{
{
VolumeSource: v1.VolumeSource{
GCEPersistentDisk: &v1.GCEPersistentDiskVolumeSource{
PDName: "bar",
},
},
},
},
}
tests := []struct {
pod *v1.Pod
nodeInfo *schedulernodeinfo.NodeInfo
isOk bool
name string
}{
{&v1.Pod{}, schedulernodeinfo.NewNodeInfo(), true, "nothing"},
{&v1.Pod{}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), true, "one state"},
{&v1.Pod{Spec: volState}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), false, "same state"},
{&v1.Pod{Spec: volState2}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), true, "different state"},
}
expectedFailureReasons := []PredicateFailureReason{ErrDiskConflict}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
ok, reasons, err := NoDiskConflict(test.pod, GetPredicateMetadata(test.pod, nil), test.nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !ok && !reflect.DeepEqual(reasons, expectedFailureReasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, expectedFailureReasons)
}
if test.isOk && !ok {
t.Errorf("expected ok, got none. %v %s", test.pod, test.nodeInfo)
}
if !test.isOk && ok {
t.Errorf("expected no ok, got one. %v %s", test.pod, test.nodeInfo)
}
})
}
}
func TestAWSDiskConflicts(t *testing.T) {
volState := v1.PodSpec{
Volumes: []v1.Volume{
{
VolumeSource: v1.VolumeSource{
AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{
VolumeID: "foo",
},
},
},
},
}
volState2 := v1.PodSpec{
Volumes: []v1.Volume{
{
VolumeSource: v1.VolumeSource{
AWSElasticBlockStore: &v1.AWSElasticBlockStoreVolumeSource{
VolumeID: "bar",
},
},
},
},
}
tests := []struct {
pod *v1.Pod
nodeInfo *schedulernodeinfo.NodeInfo
isOk bool
name string
}{
{&v1.Pod{}, schedulernodeinfo.NewNodeInfo(), true, "nothing"},
{&v1.Pod{}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), true, "one state"},
{&v1.Pod{Spec: volState}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), false, "same state"},
{&v1.Pod{Spec: volState2}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), true, "different state"},
}
expectedFailureReasons := []PredicateFailureReason{ErrDiskConflict}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
ok, reasons, err := NoDiskConflict(test.pod, GetPredicateMetadata(test.pod, nil), test.nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !ok && !reflect.DeepEqual(reasons, expectedFailureReasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, expectedFailureReasons)
}
if test.isOk && !ok {
t.Errorf("expected ok, got none. %v %s", test.pod, test.nodeInfo)
}
if !test.isOk && ok {
t.Errorf("expected no ok, got one. %v %s", test.pod, test.nodeInfo)
}
})
}
}
func TestRBDDiskConflicts(t *testing.T) {
volState := v1.PodSpec{
Volumes: []v1.Volume{
{
VolumeSource: v1.VolumeSource{
RBD: &v1.RBDVolumeSource{
CephMonitors: []string{"a", "b"},
RBDPool: "foo",
RBDImage: "bar",
FSType: "ext4",
},
},
},
},
}
volState2 := v1.PodSpec{
Volumes: []v1.Volume{
{
VolumeSource: v1.VolumeSource{
RBD: &v1.RBDVolumeSource{
CephMonitors: []string{"c", "d"},
RBDPool: "foo",
RBDImage: "bar",
FSType: "ext4",
},
},
},
},
}
tests := []struct {
pod *v1.Pod
nodeInfo *schedulernodeinfo.NodeInfo
isOk bool
name string
}{
{&v1.Pod{}, schedulernodeinfo.NewNodeInfo(), true, "nothing"},
{&v1.Pod{}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), true, "one state"},
{&v1.Pod{Spec: volState}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), false, "same state"},
{&v1.Pod{Spec: volState2}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), true, "different state"},
}
expectedFailureReasons := []PredicateFailureReason{ErrDiskConflict}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
ok, reasons, err := NoDiskConflict(test.pod, GetPredicateMetadata(test.pod, nil), test.nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !ok && !reflect.DeepEqual(reasons, expectedFailureReasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, expectedFailureReasons)
}
if test.isOk && !ok {
t.Errorf("expected ok, got none. %v %s", test.pod, test.nodeInfo)
}
if !test.isOk && ok {
t.Errorf("expected no ok, got one. %v %s", test.pod, test.nodeInfo)
}
})
}
}
func TestISCSIDiskConflicts(t *testing.T) {
volState := v1.PodSpec{
Volumes: []v1.Volume{
{
VolumeSource: v1.VolumeSource{
ISCSI: &v1.ISCSIVolumeSource{
TargetPortal: "127.0.0.1:3260",
IQN: "iqn.2016-12.server:storage.target01",
FSType: "ext4",
Lun: 0,
},
},
},
},
}
volState2 := v1.PodSpec{
Volumes: []v1.Volume{
{
VolumeSource: v1.VolumeSource{
ISCSI: &v1.ISCSIVolumeSource{
TargetPortal: "127.0.0.1:3260",
IQN: "iqn.2017-12.server:storage.target01",
FSType: "ext4",
Lun: 0,
},
},
},
},
}
tests := []struct {
pod *v1.Pod
nodeInfo *schedulernodeinfo.NodeInfo
isOk bool
name string
}{
{&v1.Pod{}, schedulernodeinfo.NewNodeInfo(), true, "nothing"},
{&v1.Pod{}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), true, "one state"},
{&v1.Pod{Spec: volState}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), false, "same state"},
{&v1.Pod{Spec: volState2}, schedulernodeinfo.NewNodeInfo(&v1.Pod{Spec: volState}), true, "different state"},
}
expectedFailureReasons := []PredicateFailureReason{ErrDiskConflict}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
ok, reasons, err := NoDiskConflict(test.pod, GetPredicateMetadata(test.pod, nil), test.nodeInfo)
if err != nil {
t.Errorf("unexpected error: %v", err)
}
if !ok && !reflect.DeepEqual(reasons, expectedFailureReasons) {
t.Errorf("unexpected failure reasons: %v, want: %v", reasons, expectedFailureReasons)
}
if test.isOk && !ok {
t.Errorf("expected ok, got none. %v %s", test.pod, test.nodeInfo)
}
if !test.isOk && ok {
t.Errorf("expected no ok, got one. %v %s", test.pod, test.nodeInfo)
}
})
}
}
// TODO: Add test case for RequiredDuringSchedulingRequiredDuringExecution after it's implemented.
func TestPodFitsSelector(t *testing.T) {
tests := []struct {
pod *v1.Pod
labels map[string]string
nodeName string
fits bool
name string
}{
{
pod: &v1.Pod{},
fits: true,
name: "no selector",
},
{
pod: &v1.Pod{
Spec: v1.PodSpec{
NodeSelector: map[string]string{
"foo": "bar",
},
},
},
fits: false,
name: "missing labels",
},
{
pod: &v1.Pod{
Spec: v1.PodSpec{
NodeSelector: map[string]string{
"foo": "bar",
},
},
},
labels: map[string]string{
"foo": "bar",
},
fits: true,
name: "same labels",
},
{
pod: &v1.Pod{