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templates_test.go
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templates_test.go
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/*
Copyright 2016 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 gce
import (
"fmt"
"math"
"strconv"
"strings"
"testing"
"k8s.io/autoscaler/cluster-autoscaler/cloudprovider/gce/localssdsize"
"k8s.io/autoscaler/cluster-autoscaler/config"
gpuUtils "k8s.io/autoscaler/cluster-autoscaler/utils/gpu"
"k8s.io/autoscaler/cluster-autoscaler/utils/units"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/stretchr/testify/assert"
gce "google.golang.org/api/compute/v1"
apiv1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
quota "k8s.io/apiserver/pkg/quota/v1"
)
// TestBuildNodeFromTemplateSetsResources tests that capacity and allocatable
// are loaded into the node template status, a few error scenarios, and physical
// ephemeral storage (an intermediate result), but it doesn't test that capacity
// and allocatable are computed correctly, (the test itself calls
// GceTemplateBuilder.BuildCapacity, GceTemplateBuilder.CalculateAllocatable,
// and ParseEvictionHardOrGetDefault to compute expected values); computations
// are tested separately.
func TestBuildNodeFromTemplateSetsResources(t *testing.T) {
var thirtyPodsPerNode int64 = 30
type testCase struct {
scenario string
// test inputs
kubeEnv string
accelerators []*gce.AcceleratorConfig
attachedLocalSSDCount int64
pods *int64
// other test inputs (constant across test cases, because they are test invariants for now)
physicalCpu int64
physicalMemory int64
bootDiskSizeGiB int64
// dependent inputs, should match kubeEnv, used to compute expected capacity and allocatable, out of test scope
kubeReserved bool
reservedCpu string
reservedMemory string
reservedEphemeralStorage string
isEphemeralStorageBlocked bool
ephemeralStorageLocalSSDCount int64
extendedResources apiv1.ResourceList
// test outputs
expectedMigInfoErr bool
expectedNodeTemplateErr bool
}
testCases := []testCase{
{
scenario: "kube-reserved present in kube-env",
kubeEnv: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
fmt.Sprintf("KUBELET_TEST_ARGS: --experimental-allocatable-ignore-eviction --kube-reserved=cpu=1000m,memory=%v,ephemeral-storage=30Gi\n", 1*units.MiB) +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
accelerators: []*gce.AcceleratorConfig{
{AcceleratorType: "nvidia-tesla-k80", AcceleratorCount: 3},
{AcceleratorType: "nvidia-tesla-p100", AcceleratorCount: 8},
},
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
bootDiskSizeGiB: 300,
kubeReserved: true,
reservedCpu: "1000m",
reservedMemory: fmt.Sprintf("%v", 1*units.MiB),
reservedEphemeralStorage: "30Gi",
},
{
scenario: "no kube-reserved in kube-env",
kubeEnv: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
kubeReserved: false,
}, {
scenario: "no kube-env at all",
kubeEnv: "",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
kubeReserved: false,
}, {
scenario: "totally messed up kube-env",
kubeEnv: "This kube-env is totally messed up",
expectedMigInfoErr: true,
}, {
scenario: "max pods per node specified",
kubeEnv: "",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
pods: &thirtyPodsPerNode,
kubeReserved: false,
},
{
scenario: "BLOCK_EPH_STORAGE_BOOT_DISK in kube-env",
kubeEnv: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"AUTOSCALER_ENV_VARS: os_distribution=cos;os=linux;kube_reserved=cpu=0,memory=0,ephemeral-storage=0;BLOCK_EPH_STORAGE_BOOT_DISK=true\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
bootDiskSizeGiB: 300,
reservedCpu: "0m",
reservedMemory: fmt.Sprintf("%v", 0*units.MiB),
reservedEphemeralStorage: "0Gi",
kubeReserved: true,
isEphemeralStorageBlocked: true,
},
{
scenario: "os_distribution is unset, should default to cos",
kubeEnv: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"AUTOSCALER_ENV_VARS: os_distribution=;os=linux;kube_reserved=cpu=0,memory=0,ephemeral-storage=0;BLOCK_EPH_STORAGE_BOOT_DISK=true\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
bootDiskSizeGiB: 300,
reservedCpu: "0m",
reservedMemory: fmt.Sprintf("%v", 0*units.MiB),
reservedEphemeralStorage: "0Gi",
kubeReserved: true,
isEphemeralStorageBlocked: true,
},
{
scenario: "BLOCK_EPH_STORAGE_BOOT_DISK is false in kube-env",
kubeEnv: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"AUTOSCALER_ENV_VARS: os_distribution=cos;os=linux;kube_reserved=cpu=0,memory=0,ephemeral-storage=0;BLOCK_EPH_STORAGE_BOOT_DISK=false\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
reservedCpu: "0m",
reservedMemory: fmt.Sprintf("%v", 0*units.MiB),
reservedEphemeralStorage: "0Gi",
kubeReserved: true,
},
{
scenario: "more local SSDs requested for ephemeral storage than attached",
kubeEnv: "AUTOSCALER_ENV_VARS: os_distribution=cos;os=linux;ephemeral_storage_local_ssd_count=1\n",
ephemeralStorageLocalSSDCount: 1,
attachedLocalSSDCount: 0,
expectedNodeTemplateErr: true,
},
{
scenario: "all attached local SSDs requested for ephemeral storage",
kubeEnv: "AUTOSCALER_ENV_VARS: os_distribution=cos;os=linux;ephemeral_storage_local_ssd_count=2\n",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
bootDiskSizeGiB: 300,
ephemeralStorageLocalSSDCount: 2,
attachedLocalSSDCount: 2,
},
{
scenario: "more local SSDs attached than requested for ephemeral storage",
kubeEnv: "AUTOSCALER_ENV_VARS: os_distribution=cos;os=linux;ephemeral_storage_local_ssd_count=2\n",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
ephemeralStorageLocalSSDCount: 2,
attachedLocalSSDCount: 4,
},
{
scenario: "ephemeral storage on local SSDs with kube-reserved",
kubeEnv: "AUTOSCALER_ENV_VARS: kube_reserved=cpu=0,memory=0,ephemeral-storage=10Gi;os_distribution=cos;os=linux;ephemeral_storage_local_ssd_count=2\n",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
ephemeralStorageLocalSSDCount: 2,
kubeReserved: true,
reservedCpu: "0m",
reservedMemory: fmt.Sprintf("%v", 0*units.MiB),
reservedEphemeralStorage: "10Gi",
attachedLocalSSDCount: 4,
},
{
scenario: "extended_resources present in kube-env",
kubeEnv: "AUTOSCALER_ENV_VARS: kube_reserved=cpu=0,memory=0,ephemeral-storage=10Gi;os_distribution=cos;os=linux;ephemeral_storage_local_ssd_count=2;extended_resources=someResource=2,anotherResource=1G\n",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
ephemeralStorageLocalSSDCount: 2,
kubeReserved: true,
reservedCpu: "0m",
reservedMemory: fmt.Sprintf("%v", 0*units.MiB),
reservedEphemeralStorage: "10Gi",
attachedLocalSSDCount: 4,
extendedResources: apiv1.ResourceList{
apiv1.ResourceName("someResource"): *resource.NewQuantity(2, resource.DecimalSI),
apiv1.ResourceName("anotherResource"): *resource.NewQuantity(1*units.GB, resource.DecimalSI),
},
},
{
scenario: "malformed extended_resources in kube-env",
kubeEnv: "AUTOSCALER_ENV_VARS: kube_reserved=cpu=0,memory=0,ephemeral-storage=10Gi;os_distribution=cos;os=linux;ephemeral_storage_local_ssd_count=2;extended_resources=someResource\n",
physicalCpu: 8,
physicalMemory: 200 * units.MiB,
ephemeralStorageLocalSSDCount: 2,
kubeReserved: true,
reservedCpu: "0m",
reservedMemory: fmt.Sprintf("%v", 0*units.MiB),
reservedEphemeralStorage: "10Gi",
attachedLocalSSDCount: 4,
extendedResources: apiv1.ResourceList{},
},
}
for _, tc := range testCases {
t.Run(tc.scenario, func(t *testing.T) {
tb := &GceTemplateBuilder{}
mig := &gceMig{
gceRef: GceRef{
Name: "some-name",
Project: "some-proj",
Zone: "us-central1-b",
},
}
template := &gce.InstanceTemplate{
Name: "node-name",
Properties: &gce.InstanceProperties{
GuestAccelerators: tc.accelerators,
Metadata: &gce.Metadata{},
MachineType: "irrelevant-type",
Disks: []*gce.AttachedDisk{
{
Boot: true,
InitializeParams: &gce.AttachedDiskInitializeParams{
DiskSizeGb: tc.bootDiskSizeGiB,
},
},
},
},
}
for i := int64(0); i < tc.attachedLocalSSDCount; i++ {
template.Properties.Disks = append(template.Properties.Disks, &gce.AttachedDisk{
Type: "SCRATCH",
InitializeParams: &gce.AttachedDiskInitializeParams{
DiskType: "local-ssd",
},
})
}
if tc.kubeEnv != "" {
template.Properties.Metadata.Items = []*gce.MetadataItems{{Key: "kube-env", Value: &tc.kubeEnv}}
}
var migOsInfo MigOsInfo
kubeEnv, err := ExtractKubeEnv(template)
if err == nil {
migOsInfo, err = tb.MigOsInfo(mig.Id(), kubeEnv)
}
if tc.expectedMigInfoErr {
assert.Error(t, err)
return
}
localSSDDiskSize := localssdsize.NewSimpleLocalSSDProvider()
node, err := tb.BuildNodeFromTemplate(mig, migOsInfo, template, kubeEnv, tc.physicalCpu, tc.physicalMemory, tc.pods, &GceReserved{}, localSSDDiskSize)
if tc.expectedNodeTemplateErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
assert.NotNil(t, node)
assert.NotNil(t, node.Status)
assert.NotNil(t, node.Status.Capacity)
assert.NotNil(t, node.Status.Allocatable)
if tc.bootDiskSizeGiB > 0 && !tc.isEphemeralStorageBlocked {
val, ok := node.Annotations[BootDiskSizeAnnotation]
if !ok {
t.Errorf("Expected to have boot disk size annotation, have nil")
}
assert.Equal(t, val, strconv.FormatInt(tc.bootDiskSizeGiB, 10))
} else if tc.attachedLocalSSDCount > 0 {
val, ok := node.Annotations[LocalSsdCountAnnotation]
if !ok {
t.Errorf("Expected to have local SSD count annotation")
}
assert.Equal(t, val, strconv.FormatInt(tc.attachedLocalSSDCount, 10))
}
// this logic is a duplicate of logic under test and would best be captured by
// specifying physicalEphemeralStorageGiB in the testCase struct
physicalEphemeralStorageGiB := tc.bootDiskSizeGiB
if tc.ephemeralStorageLocalSSDCount > 0 {
physicalEphemeralStorageGiB = tc.ephemeralStorageLocalSSDCount * int64(localSSDDiskSize.SSDSizeInGiB(template.Properties.MachineType))
} else if tc.isEphemeralStorageBlocked {
physicalEphemeralStorageGiB = 0
}
migOsInfo := NewMigOsInfo(OperatingSystemLinux, OperatingSystemDistributionCOS, "")
capacity, err := tb.BuildCapacity(migOsInfo, tc.physicalCpu, tc.physicalMemory, tc.accelerators, physicalEphemeralStorageGiB*units.GiB, tc.ephemeralStorageLocalSSDCount, tc.pods, &GceReserved{}, tc.extendedResources)
assert.NoError(t, err)
assertEqualResourceLists(t, "Capacity", capacity, node.Status.Capacity)
if !tc.kubeReserved {
assertEqualResourceLists(t, "Allocatable", capacity, node.Status.Allocatable)
} else {
reserved, err := makeResourceList(tc.reservedCpu, tc.reservedMemory, 0, tc.reservedEphemeralStorage)
assert.NoError(t, err)
allocatable := tb.CalculateAllocatable(capacity, reserved, ParseEvictionHardOrGetDefault(nil))
assertEqualResourceLists(t, "Allocatable", allocatable, node.Status.Allocatable)
}
}
})
}
}
func TestBuildGenericLabels(t *testing.T) {
type testCase struct {
name string
os OperatingSystem
arch SystemArchitecture
expectedOsLabel string
expectedArchLabel string
expectedError bool
}
testCases := []testCase{
{
name: "os linux",
os: OperatingSystemLinux,
arch: Amd64,
expectedArchLabel: "amd64",
expectedOsLabel: "linux",
expectedError: false,
},
{
name: "os windows",
os: OperatingSystemWindows,
expectedOsLabel: "windows",
expectedError: false,
},
{
name: "os unknown",
os: OperatingSystemUnknown,
expectedOsLabel: "",
expectedError: true,
},
{
name: "os linux arm",
os: OperatingSystemLinux,
arch: Arm64,
expectedArchLabel: "arm64",
expectedOsLabel: "linux",
expectedError: false,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
expectedLabels := map[string]string{
apiv1.LabelTopologyRegion: "us-central1",
apiv1.LabelTopologyZone: "us-central1-b",
gceCSITopologyKeyZone: "us-central1-b",
apiv1.LabelHostname: "sillyname",
apiv1.LabelInstanceTypeStable: "n1-standard-8",
apiv1.LabelArchStable: tc.expectedArchLabel,
apiv1.LabelOSStable: tc.expectedOsLabel,
}
labels, err := BuildGenericLabels(GceRef{
Name: "kubernetes-minion-group",
Project: "mwielgus-proj",
Zone: "us-central1-b"},
"n1-standard-8",
"sillyname",
tc.os,
tc.arch)
if tc.expectedError {
assert.Error(t, err)
} else {
assert.NoError(t, err)
assert.Equal(t, expectedLabels, labels)
}
})
}
}
func TestCalculateAllocatable(t *testing.T) {
type testCase struct {
scenario string
capacityCpu string
reservedCpu string
allocatableCpu string
capacityMemory string
reservedMemory string
allocatableMemory string
capacityEphemeralStorage string
reservedEphemeralStorage string
allocatableEphemeralStorage string
}
testCases := []testCase{
{
scenario: "no reservations",
capacityCpu: "8",
reservedCpu: "0",
allocatableCpu: "8",
capacityMemory: fmt.Sprintf("%v", 200*units.MiB),
reservedMemory: "0",
allocatableMemory: fmt.Sprintf("%v", 200*units.MiB-GetKubeletEvictionHardForMemory(nil)),
capacityEphemeralStorage: fmt.Sprintf("%v", 200*units.GiB),
reservedEphemeralStorage: "0",
allocatableEphemeralStorage: fmt.Sprintf("%v", 200*units.GiB-GetKubeletEvictionHardForEphemeralStorage(200*GiB, nil)),
},
{
scenario: "reserved cpu, memory and ephemeral storage",
capacityCpu: "8",
reservedCpu: "1000m",
allocatableCpu: "7000m",
capacityMemory: fmt.Sprintf("%v", 200*units.MiB),
reservedMemory: fmt.Sprintf("%v", 50*units.MiB),
allocatableMemory: fmt.Sprintf("%v", 150*units.MiB-GetKubeletEvictionHardForMemory(nil)),
capacityEphemeralStorage: fmt.Sprintf("%v", 200*units.GiB),
reservedEphemeralStorage: fmt.Sprintf("%v", 40*units.GiB),
allocatableEphemeralStorage: fmt.Sprintf("%v", 160*units.GiB-GetKubeletEvictionHardForEphemeralStorage(200*GiB, nil)),
},
}
for _, tc := range testCases {
t.Run(tc.scenario, func(t *testing.T) {
tb := GceTemplateBuilder{}
capacity, err := makeResourceList(tc.capacityCpu, tc.capacityMemory, 0, tc.capacityEphemeralStorage)
assert.NoError(t, err)
reserved, err := makeResourceList(tc.reservedCpu, tc.reservedMemory, 0, tc.reservedEphemeralStorage)
assert.NoError(t, err)
expectedAllocatable, err := makeResourceList(tc.allocatableCpu, tc.allocatableMemory, 0, tc.allocatableEphemeralStorage)
assert.NoError(t, err)
allocatable := tb.CalculateAllocatable(capacity, reserved, ParseEvictionHardOrGetDefault(nil))
assertEqualResourceLists(t, "Allocatable", expectedAllocatable, allocatable)
})
}
}
func TestBuildAllocatableFromKubeEnv(t *testing.T) {
type testCase struct {
kubeEnvValue string
capacityCpu string
capacityMemory string
capacityEphemeralStorage string
expectedCpu string
expectedMemory string
expectedEphemeralStorage string
gpuCount int64
expectedErr bool
}
testCases := []testCase{{
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"KUBELET_TEST_ARGS: --experimental-allocatable-ignore-eviction --kube-reserved=cpu=1000m,memory=300000Mi,ephemeral-storage=30Gi\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
capacityCpu: "4000m",
capacityMemory: "700000Mi",
capacityEphemeralStorage: "100Gi",
expectedCpu: "3000m",
expectedMemory: "399900Mi", // capacityMemory-kube_reserved-DefaultKubeletEvictionHardMemory
expectedEphemeralStorage: "60Gi", // capacityEphemeralStorage-kube_reserved-DefaultKubeletEvictionHardMemory
gpuCount: 10,
expectedErr: false,
}, {
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
capacityCpu: "4000m",
capacityMemory: "700000Mi",
expectedErr: true,
}}
for _, tc := range testCases {
capacity, err := makeResourceList(tc.capacityCpu, tc.capacityMemory, tc.gpuCount, tc.capacityEphemeralStorage)
assert.NoError(t, err)
tb := GceTemplateBuilder{}
var allocatable apiv1.ResourceList
kubeEnv, err := ParseKubeEnv("test", tc.kubeEnvValue)
if err == nil {
allocatable, err = tb.BuildAllocatableFromKubeEnv(capacity, kubeEnv, ParseEvictionHardOrGetDefault(nil))
}
if tc.expectedErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
expectedResources, err := makeResourceList(tc.expectedCpu, tc.expectedMemory, tc.gpuCount, tc.expectedEphemeralStorage)
assert.NoError(t, err)
for res, expectedQty := range expectedResources {
qty, found := allocatable[res]
assert.True(t, found)
assert.Equal(t, qty.Value(), expectedQty.Value())
}
}
}
}
func TestParseEvictionHard(t *testing.T) {
type testCase struct {
memory string
ephemeralStorage string
memoryExpected int64 // bytes
ephemeralStorageRatioExpected float64
}
testCases := []testCase{{
memory: "200Mi",
ephemeralStorage: "15%",
memoryExpected: 200 * MiB,
ephemeralStorageRatioExpected: 0.15,
}, {
memory: "2Gi",
ephemeralStorage: "11.5%",
memoryExpected: 2 * GiB,
ephemeralStorageRatioExpected: 0.115,
}, {
memory: "",
ephemeralStorage: "", // empty string, fallback to default
memoryExpected: 100 * MiB,
ephemeralStorageRatioExpected: 0.1,
}, {
memory: "110292",
ephemeralStorage: "11", // percentage missing, should fallback to default
memoryExpected: 110292,
ephemeralStorageRatioExpected: 0.1,
}, {
memory: "abcb12", // unparsable, fallback to default
ephemeralStorage: "-11%", // negative percentage, should fallback to default
memoryExpected: 100 * MiB,
ephemeralStorageRatioExpected: 0.1,
}}
for _, tc := range testCases {
test := map[string]string{
MemoryEvictionHardTag: tc.memory,
EphemeralStorageEvictionHardTag: tc.ephemeralStorage,
}
actualOutput := ParseEvictionHardOrGetDefault(test)
assert.EqualValues(t, tc.memoryExpected, actualOutput.MemoryEvictionQuantity, "TestParseEviction Failed Memory. %v expected does not match %v actual.", tc.memoryExpected, actualOutput.MemoryEvictionQuantity)
assert.EqualValues(t, tc.ephemeralStorageRatioExpected, actualOutput.EphemeralStorageEvictionRatio, "TestParseEviction Failed Ephemeral Storage. %v expected does not match %v actual.", tc.memoryExpected, actualOutput.EphemeralStorageEvictionRatio)
}
}
func TestGetAcceleratorCount(t *testing.T) {
testCases := []struct {
accelerators []*gce.AcceleratorConfig
count int64
}{{
accelerators: []*gce.AcceleratorConfig{},
count: 0,
}, {
accelerators: []*gce.AcceleratorConfig{
{AcceleratorType: "nvidia-tesla-k80", AcceleratorCount: 3},
},
count: 3,
}, {
accelerators: []*gce.AcceleratorConfig{
{AcceleratorType: "nvidia-tesla-k80", AcceleratorCount: 3},
{AcceleratorType: "nvidia-tesla-p100", AcceleratorCount: 8},
},
count: 11,
}, {
accelerators: []*gce.AcceleratorConfig{
{AcceleratorType: "other-type", AcceleratorCount: 3},
{AcceleratorType: "nvidia-tesla-p100", AcceleratorCount: 8},
},
count: 8,
}}
for _, tc := range testCases {
tb := GceTemplateBuilder{}
assert.Equal(t, tc.count, tb.getAcceleratorCount(tc.accelerators))
}
}
func TestBuildCapacityMemory(t *testing.T) {
type testCase struct {
physicalCpu int64
physicalMemory int64
os OperatingSystem
expectedCapacityMemory int64
}
testCases := []testCase{
{
physicalCpu: 1,
physicalMemory: 2 * units.GiB,
os: OperatingSystemLinux,
expectedCapacityMemory: 2*units.GiB - 32*units.MiB - kernelReservedMemory - int64(math.Min(correctionConstant*float64(2*units.GiB), maximumCorrectionValue)) - lowMemoryOffset,
},
{
physicalCpu: 2,
physicalMemory: 4 * units.GiB,
os: OperatingSystemLinux,
expectedCapacityMemory: 4*units.GiB - 64*units.MiB - kernelReservedMemory - swiotlbReservedMemory - int64(math.Min(correctionConstant*float64(4*units.GiB), maximumCorrectionValue)) - lowMemoryOffset,
},
{
physicalCpu: 32,
physicalMemory: 128 * units.GiB,
os: OperatingSystemLinux,
expectedCapacityMemory: 128*units.GiB - 2*units.GiB - kernelReservedMemory - swiotlbReservedMemory - int64(math.Min(correctionConstant*float64(128*units.GiB), maximumCorrectionValue)),
},
{
physicalCpu: 2,
physicalMemory: 4 * units.GiB,
os: OperatingSystemWindows,
expectedCapacityMemory: 4 * units.GiB,
},
}
for idx, tc := range testCases {
t.Run(fmt.Sprintf("%v", idx), func(t *testing.T) {
tb := GceTemplateBuilder{}
noAccelerators := make([]*gce.AcceleratorConfig, 0)
migOsInfo := NewMigOsInfo(tc.os, OperatingSystemDistributionCOS, "")
buildCapacity, err := tb.BuildCapacity(migOsInfo, tc.physicalCpu, tc.physicalMemory, noAccelerators, -1, 0, nil, &GceReserved{}, apiv1.ResourceList{})
assert.NoError(t, err)
expectedCapacity, err := makeResourceList2(tc.physicalCpu, tc.expectedCapacityMemory, 0, 110)
assert.NoError(t, err)
assertEqualResourceLists(t, "Capacity", expectedCapacity, buildCapacity)
})
}
}
func TestExtractAutoscalingOptionsFromKubeEnv(t *testing.T) {
cases := []struct {
desc string
kubeEnvValue string
expectedValue map[string]string
expectedErr bool
}{
{
desc: "autoscaling_options not specified",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_labels=a=b,c=d;node_taints=a=b:c,d=e:f\n",
expectedValue: map[string]string{},
expectedErr: false,
},
{
desc: "empty KubeEnv",
kubeEnvValue: "",
expectedValue: map[string]string{},
expectedErr: false,
},
{
desc: "unparsable KubeEnv",
kubeEnvValue: "AUTOSCALER_ENV_VARS",
expectedValue: nil,
expectedErr: true,
},
{
desc: "partial option set",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_labels=a=b;autoscaling_options=scaledownunreadytime=1h",
expectedValue: map[string]string{
config.DefaultScaleDownUnreadyTimeKey: "1h",
},
expectedErr: false,
},
{
desc: "full option set",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_labels=a,b;autoscaling_options=scaledownutilizationthreshold=0.4,scaledowngpuutilizationthreshold=0.5,scaledownunneededtime=30m,scaledownunreadytime=1h",
expectedValue: map[string]string{
config.DefaultScaleDownUtilizationThresholdKey: "0.4",
config.DefaultScaleDownGpuUtilizationThresholdKey: "0.5",
config.DefaultScaleDownUnneededTimeKey: "30m",
config.DefaultScaleDownUnreadyTimeKey: "1h",
},
expectedErr: false,
},
}
for _, c := range cases {
t.Run(c.desc, func(t *testing.T) {
var value map[string]string
kubeEnv, err := ParseKubeEnv("test", c.kubeEnvValue)
if err == nil {
value, err = extractAutoscalingOptionsFromKubeEnv(kubeEnv)
}
assert.Equal(t, c.expectedValue, value)
if c.expectedErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
})
}
}
func TestExtractAutoscalerVarFromKubeEnv(t *testing.T) {
cases := []struct {
desc string
name string
kubeEnvValue string
expectedValue string
expectedFound bool
expectedErr error
}{
{
desc: "node_labels",
name: "node_labels",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_labels=a=b,c=d;node_taints=a=b:c,d=e:f\n",
expectedValue: "a=b,c=d",
expectedFound: true,
expectedErr: nil,
},
{
desc: "node_labels not found",
name: "node_labels",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_taints=a=b:c,d=e:f\n",
expectedValue: "",
expectedFound: false,
expectedErr: nil,
},
{
desc: "node_labels empty",
name: "node_labels",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_labels=;node_taints=a=b:c,d=e:f\n",
expectedValue: "",
expectedFound: true,
expectedErr: nil,
},
{
desc: "node_taints",
name: "node_taints",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_labels=a=b,c=d;node_taints=a=b:c,d=e:f\n",
expectedValue: "a=b:c,d=e:f",
expectedFound: true,
expectedErr: nil,
},
{
desc: "malformed node_labels",
name: "node_labels",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_labels;node_taints=a=b:c,d=e:f\n",
expectedValue: "",
expectedFound: false,
expectedErr: fmt.Errorf("malformed autoscaler var: node_labels"),
},
}
for _, c := range cases {
t.Run(c.desc, func(t *testing.T) {
var value string
var found bool
kubeEnv, err := ParseKubeEnv("test", c.kubeEnvValue)
if err == nil {
value, found, err = extractAutoscalerVarFromKubeEnv(kubeEnv, c.name)
}
assert.Equal(t, c.expectedValue, value)
assert.Equal(t, c.expectedFound, found)
assert.Equal(t, c.expectedErr, err)
})
}
}
func TestExtractLabelsFromKubeEnv(t *testing.T) {
poolLabel := "cloud.google.com/gke-nodepool"
preemptibleLabel := "cloud.google.com/gke-preemptible"
expectedLabels := map[string]string{
"a": "b",
"c": "d",
poolLabel: "pool-3",
preemptibleLabel: "true",
}
cases := []struct {
desc string
kubeEnvValue string
expect map[string]string
err error
}{
{
desc: "from NODE_LABELS",
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n",
expect: expectedLabels,
err: nil,
},
{
desc: "from AUTOSCALER_ENV_VARS.node_labels",
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"AUTOSCALER_ENV_VARS: node_labels=a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true;" +
"node_taints='dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c';" +
"kube_reserved=cpu=1000m,memory=300000Mi;" +
"os=linux\n" +
"DNS_SERVER_IP: '10.0.0.10'\n",
expect: expectedLabels,
err: nil,
},
{
desc: "malformed key-value in AUTOSCALER_ENV_VARS.node_labels",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_labels=ab,c=d\n",
err: fmt.Errorf("error while parsing key-value list, val: ab"),
},
}
for _, c := range cases {
t.Run(c.desc, func(t *testing.T) {
var labels map[string]string
kubeEnv, err := ParseKubeEnv("test", c.kubeEnvValue)
if err == nil {
labels, err = extractLabelsFromKubeEnv(kubeEnv)
}
assert.Equal(t, c.err, err)
if c.err != nil {
return
}
assert.Equal(t, c.expect, labels)
template := &gce.InstanceTemplate{
Properties: &gce.InstanceProperties{
Metadata: &gce.Metadata{
Items: []*gce.MetadataItems{
{
Key: "kube-env",
Value: &c.kubeEnvValue,
},
},
},
},
}
kubeEnv, err = ExtractKubeEnv(template)
if err == nil {
labels, err = GetLabelsFromKubeEnv(kubeEnv)
}
assert.Equal(t, c.err, err)
if c.err != nil {
return
}
assert.Equal(t, c.expect, labels)
})
}
}
func TestExtractTaintsFromKubeEnv(t *testing.T) {
expectedTaints := makeTaintSet([]apiv1.Taint{
{
Key: "dedicated",
Value: "ml",
Effect: apiv1.TaintEffectNoSchedule,
},
{
Key: "test",
Value: "dev",
Effect: apiv1.TaintEffectPreferNoSchedule,
},
{
Key: "a",
Value: "b",
Effect: apiv1.TaintEffect("c"),
},
})
cases := []struct {
desc string
kubeEnvValue string
expect map[apiv1.Taint]bool
err error
}{
{
desc: "from NODE_TAINTS",
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
expect: expectedTaints,
},
{
desc: "from AUTOSCALER_ENV_VARS.node_taints",
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"AUTOSCALER_ENV_VARS: node_labels=a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true;" +
"node_taints='dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c';" +
"kube_reserved=cpu=1000m,memory=3000`00Mi;" +
"os=linux\n",
expect: expectedTaints,
},
{
desc: "from empty AUTOSCALER_ENV_VARS.node_taints",
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"AUTOSCALER_ENV_VARS: node_labels=a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true;" +
"node_taints=\n",
expect: makeTaintSet([]apiv1.Taint{}),
},
{
desc: "malformed key-value in AUTOSCALER_ENV_VARS.node_taints",
kubeEnvValue: "AUTOSCALER_ENV_VARS: node_taints='dedicatedml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
err: fmt.Errorf("error while parsing key-value list, val: dedicatedml:NoSchedule"),
},
}
for _, c := range cases {
t.Run(c.desc, func(t *testing.T) {
var taints []apiv1.Taint
kubeEnv, err := ParseKubeEnv("test", c.kubeEnvValue)
if err == nil {
taints, err = extractTaintsFromKubeEnv(kubeEnv)
}
assert.Equal(t, c.err, err)
if c.err != nil {
return
}
assert.Equal(t, c.expect, makeTaintSet(taints))
template := &gce.InstanceTemplate{
Properties: &gce.InstanceProperties{
Metadata: &gce.Metadata{
Items: []*gce.MetadataItems{
{
Key: "kube-env",
Value: &c.kubeEnvValue,
},
},
},
},
}
kubeEnv, err = ExtractKubeEnv(template)
if err == nil {
taints, err = GetTaintsFromKubeEnv(kubeEnv)
}
assert.Equal(t, c.err, err)
if c.err != nil {
return
}
assert.Equal(t, c.expect, makeTaintSet(taints))
})
}
}
func TestExtractKubeReservedFromKubeEnv(t *testing.T) {
type testCase struct {
kubeEnvValue string
expectedReserved string
expectedErr bool
}
testCases := []testCase{
{
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"KUBELET_TEST_ARGS: --experimental-allocatable-ignore-eviction --kube-reserved=cpu=1000m,memory=300000Mi\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
expectedReserved: "cpu=1000m,memory=300000Mi",
expectedErr: false,
},
{
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"AUTOSCALER_ENV_VARS: node_labels=a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true;" +
"node_taints='dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c';" +
"kube_reserved=cpu=1000m,memory=300000Mi;" +
"os=linux\n" +
"KUBELET_TEST_ARGS: --experimental-allocatable-ignore-eviction\n",
expectedReserved: "cpu=1000m,memory=300000Mi",
expectedErr: false,
},
{
// Multi-line KUBELET_ARGS
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"AUTOSCALER_ENV_VARS: node_labels=a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true;" +
"node_taints='dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c';" +
"kube_reserved=cpu=1000m,memory=300000Mi\n" +
"KUBELET_ARGS: --experimental-allocatable-ignore-eviction\n" +
" --kube_reserved=cpu=1000m,memory=300000Mi\n",
expectedReserved: "cpu=1000m,memory=300000Mi",
expectedErr: false,
},
{
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"KUBELET_TEST_ARGS: --experimental-allocatable-ignore-eviction\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
expectedReserved: "",
expectedErr: true,
},
{
kubeEnvValue: "ENABLE_NODE_PROBLEM_DETECTOR: 'daemonset'\n" +
"NODE_LABELS: a=b,c=d,cloud.google.com/gke-nodepool=pool-3,cloud.google.com/gke-preemptible=true\n" +
"DNS_SERVER_IP: '10.0.0.10'\n" +
"NODE_TAINTS: 'dedicated=ml:NoSchedule,test=dev:PreferNoSchedule,a=b:c'\n",
expectedReserved: "",
expectedErr: true,
},
}
for _, tc := range testCases {
var reserved string
kubeEnv, err := ParseKubeEnv("test", tc.kubeEnvValue)
if err == nil {
reserved, err = extractKubeReservedFromKubeEnv(kubeEnv)
}
assert.Equal(t, tc.expectedReserved, reserved)
if tc.expectedErr {
assert.Error(t, err)