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fleetautoscaler_test.go
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// Copyright 2018 Google LLC All Rights Reserved.
//
// 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 e2e
import (
"bytes"
"context"
cryptorand "crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"fmt"
"math/big"
"math/rand"
"strings"
"testing"
"time"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
admregv1 "k8s.io/api/admissionregistration/v1"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/wait"
agonesv1 "agones.dev/agones/pkg/apis/agones/v1"
allocationv1 "agones.dev/agones/pkg/apis/allocation/v1"
autoscalingv1 "agones.dev/agones/pkg/apis/autoscaling/v1"
"agones.dev/agones/pkg/util/runtime"
e2e "agones.dev/agones/test/e2e/framework"
)
var deletePropagationForeground = metav1.DeletePropagationForeground
var waitForDeletion = metav1.DeleteOptions{
PropagationPolicy: &deletePropagationForeground,
}
func TestAutoscalerBasicFunctions(t *testing.T) {
t.Parallel()
ctx := context.Background()
stable := framework.AgonesClient.AgonesV1()
fleets := stable.Fleets(framework.Namespace)
flt, err := fleets.Create(ctx, defaultFleet(framework.Namespace), metav1.CreateOptions{})
if assert.Nil(t, err) {
defer fleets.Delete(ctx, flt.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
}
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(flt.Spec.Replicas))
fleetautoscalers := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(framework.Namespace)
defaultFas := defaultFleetAutoscaler(flt, framework.Namespace)
fas, err := fleetautoscalers.Create(ctx, defaultFas, metav1.CreateOptions{})
require.NoError(t, err)
defer fleetautoscalers.Delete(ctx, fas.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
// the fleet autoscaler should scale the fleet up now up to BufferSize
bufferSize := int32(fas.Spec.Policy.Buffer.BufferSize.IntValue())
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(bufferSize))
// patch the autoscaler to increase MinReplicas and watch the fleet scale up
fas, err = patchFleetAutoscaler(ctx, fas, intstr.FromInt(int(bufferSize)), bufferSize+2, fas.Spec.Policy.Buffer.MaxReplicas)
assert.Nil(t, err, "could not patch fleetautoscaler")
// min replicas is now higher than buffer size, will scale to that level
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(fas.Spec.Policy.Buffer.MinReplicas))
// patch the autoscaler to remove MinReplicas and watch the fleet scale down to bufferSize
fas, err = patchFleetAutoscaler(ctx, fas, intstr.FromInt(int(bufferSize)), 0, fas.Spec.Policy.Buffer.MaxReplicas)
assert.Nil(t, err, "could not patch fleetautoscaler")
bufferSize = int32(fas.Spec.Policy.Buffer.BufferSize.IntValue())
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(bufferSize))
// do an allocation and watch the fleet scale up
gsa := framework.CreateAndApplyAllocation(t, flt)
framework.AssertFleetCondition(t, flt, func(_ *logrus.Entry, fleet *agonesv1.Fleet) bool {
return fleet.Status.AllocatedReplicas == 1
})
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(bufferSize))
// patch autoscaler to switch to relative buffer size and check if the fleet adjusts
_, err = patchFleetAutoscaler(ctx, fas, intstr.FromString("10%"), 1, fas.Spec.Policy.Buffer.MaxReplicas)
require.NoError(t, err, "could not patch fleetautoscaler")
// 10% with only one allocated GS means only one ready server
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(1))
// get the Status of the fleetautoscaler
fas, err = framework.AgonesClient.AutoscalingV1().FleetAutoscalers(fas.ObjectMeta.Namespace).Get(ctx, fas.Name, metav1.GetOptions{})
require.NoError(t, err, "could not get fleetautoscaler")
require.True(t, fas.Status.AbleToScale, "Could not get AbleToScale status")
// check that we are able to scale
framework.WaitForFleetAutoScalerCondition(t, fas, func(_ *logrus.Entry, fas *autoscalingv1.FleetAutoscaler) bool {
return !fas.Status.ScalingLimited
})
// patch autoscaler to a maxReplicas count equal to current replicas count
_, err = patchFleetAutoscaler(ctx, fas, intstr.FromInt(1), 1, 1)
require.NoError(t, err, "could not patch fleetautoscaler")
// check that we are not able to scale
framework.WaitForFleetAutoScalerCondition(t, fas, func(_ *logrus.Entry, fas *autoscalingv1.FleetAutoscaler) bool {
return fas.Status.ScalingLimited
})
// delete the allocated GameServer and watch the fleet scale down
gp := int64(1)
err = stable.GameServers(framework.Namespace).Delete(ctx, gsa.Status.GameServerName, metav1.DeleteOptions{GracePeriodSeconds: &gp})
require.NoError(t, err)
framework.AssertFleetCondition(t, flt, func(_ *logrus.Entry, fleet *agonesv1.Fleet) bool {
return fleet.Status.AllocatedReplicas == 0 &&
fleet.Status.ReadyReplicas == 1 &&
fleet.Status.Replicas == 1
})
}
func TestFleetAutoscalerDefaultSyncInterval(t *testing.T) {
t.Parallel()
ctx := context.Background()
stable := framework.AgonesClient.AgonesV1()
fleets := stable.Fleets(framework.Namespace)
flt, err := fleets.Create(ctx, defaultFleet(framework.Namespace), metav1.CreateOptions{})
if assert.Nil(t, err) {
defer fleets.Delete(ctx, flt.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
}
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(flt.Spec.Replicas))
fleetautoscalers := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(framework.Namespace)
dummyFleetName := "dummy-fleet"
defaultFas := &autoscalingv1.FleetAutoscaler{
ObjectMeta: metav1.ObjectMeta{
Name: dummyFleetName + "-autoscaler",
Namespace: framework.Namespace,
},
Spec: autoscalingv1.FleetAutoscalerSpec{
FleetName: dummyFleetName,
Policy: autoscalingv1.FleetAutoscalerPolicy{
Type: autoscalingv1.BufferPolicyType,
Buffer: &autoscalingv1.BufferPolicy{
BufferSize: intstr.FromInt(3),
MaxReplicas: 10,
},
},
},
}
fas, err := fleetautoscalers.Create(ctx, defaultFas, metav1.CreateOptions{})
if assert.Nil(t, err) {
defer fleetautoscalers.Delete(ctx, fas.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
} else {
// if we could not create the autoscaler, their is no point going further
logrus.Error("Failed creating autoscaler, aborting TestFleetAutoscalerDefaultSyncInterval")
return
}
defaultSyncIntervalFas := &autoscalingv1.FleetAutoscaler{}
defaultSyncIntervalFas.ApplyDefaults()
assert.Equal(t, defaultSyncIntervalFas.Spec.Sync.FixedInterval.Seconds, fas.Spec.Sync.FixedInterval.Seconds)
}
// TestFleetAutoScalerRollingUpdate - test fleet with RollingUpdate strategy work with
// FleetAutoscaler, verify that number of GameServers does not goes down below RollingUpdate strategy
// defined level on Fleet updates.
func TestFleetAutoScalerRollingUpdate(t *testing.T) {
t.Parallel()
ctx := context.Background()
stable := framework.AgonesClient.AgonesV1()
fleets := stable.Fleets(framework.Namespace)
flt := defaultFleet(framework.Namespace)
flt.Spec.Replicas = 2
maxSurge := 1
rollingUpdateCount := intstr.FromInt(maxSurge)
flt.Spec.Strategy.RollingUpdate = &appsv1.RollingUpdateDeployment{}
// Set both MaxSurge and MaxUnavaible to 1
flt.Spec.Strategy.RollingUpdate.MaxSurge = &rollingUpdateCount
flt.Spec.Strategy.RollingUpdate.MaxUnavailable = &rollingUpdateCount
flt, err := fleets.Create(ctx, flt, metav1.CreateOptions{})
if assert.Nil(t, err) {
defer fleets.Delete(ctx, flt.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
}
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(flt.Spec.Replicas))
fleetautoscalers := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(framework.Namespace)
// Create FleetAutoScaler with 7 Buffer and MinReplicas
targetScale := 7
fas := defaultFleetAutoscaler(flt, framework.Namespace)
fas.Spec.Policy.Buffer.BufferSize = intstr.FromInt(targetScale)
fas.Spec.Policy.Buffer.MinReplicas = int32(targetScale)
fas, err = fleetautoscalers.Create(ctx, fas, metav1.CreateOptions{})
if assert.Nil(t, err) {
defer fleetautoscalers.Delete(ctx, fas.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
} else {
// if we could not create the autoscaler, their is no point going further
logrus.Error("Failed creating autoscaler, aborting TestAutoscalerBasicFunctions")
return
}
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(int32(targetScale)))
// get the Status of the fleetautoscaler
fas, err = framework.AgonesClient.AutoscalingV1().FleetAutoscalers(fas.ObjectMeta.Namespace).Get(ctx, fas.Name, metav1.GetOptions{})
require.NoError(t, err, "could not get fleetautoscaler")
assert.True(t, fas.Status.AbleToScale, "Could not get AbleToScale status")
// check that we are able to scale
framework.WaitForFleetAutoScalerCondition(t, fas, func(_ *logrus.Entry, fas *autoscalingv1.FleetAutoscaler) bool {
return !fas.Status.ScalingLimited
})
// Change ContainerPort to trigger creating a new GSSet
flt, err = framework.AgonesClient.AgonesV1().Fleets(framework.Namespace).Get(ctx, flt.ObjectMeta.Name, metav1.GetOptions{})
assert.Nil(t, err, "Able to get the Fleet")
fltCopy := flt.DeepCopy()
fltCopy.Spec.Template.Spec.Ports[0].ContainerPort++
logrus.Info("Current fleet replicas count: ", fltCopy.Spec.Replicas)
// In ticket #1156 we apply new Replicas size 2, which is smaller than 7
// And RollingUpdate is broken, scaling immediately from 7 to 2 and then back to 7
// Uncomment line below to break this test
// fltCopy.Spec.Replicas = 2
flt, err = framework.AgonesClient.AgonesV1().Fleets(framework.Namespace).Update(ctx, fltCopy, metav1.UpdateOptions{})
assert.NoError(t, err)
selector := labels.SelectorFromSet(labels.Set{agonesv1.FleetNameLabel: flt.ObjectMeta.Name})
// Wait till new GSS is created
err = wait.PollUntilContextTimeout(context.Background(), 1*time.Second, 30*time.Second, true, func(ctx context.Context) (bool, error) {
gssList, err := framework.AgonesClient.AgonesV1().GameServerSets(framework.Namespace).List(ctx,
metav1.ListOptions{LabelSelector: selector.String()})
if err != nil {
return false, err
}
return len(gssList.Items) == 2, nil
})
assert.NoError(t, err)
// Check that total number of gameservers in the system does not goes lower than RollingUpdate
// parameters (deleting no more than maxUnavailable servers at a time)
// Wait for old GSSet to be deleted
err = wait.PollUntilContextTimeout(context.Background(), 1*time.Second, 5*time.Minute, true, func(ctx context.Context) (bool, error) {
list, err := framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).List(ctx,
metav1.ListOptions{LabelSelector: selector.String()})
if err != nil {
return false, err
}
maxUnavailable, err := intstr.GetValueFromIntOrPercent(flt.Spec.Strategy.RollingUpdate.MaxUnavailable, 100, true)
assert.Nil(t, err)
if len(list.Items) < targetScale-maxUnavailable {
err = errors.New("New replicas should be not less than (target - maxUnavailable)")
}
if err != nil {
return false, err
}
gssList, err := framework.AgonesClient.AgonesV1().GameServerSets(framework.Namespace).List(ctx,
metav1.ListOptions{LabelSelector: selector.String()})
if err != nil {
return false, err
}
return len(gssList.Items) == 1, nil
})
assert.NoError(t, err)
}
// TestAutoscalerStressCreate creates many fleetautoscalers with random values
// to check if the creation validation works as expected and if the fleet scales
// to the expected number of replicas (when the creation is valid)
func TestAutoscalerStressCreate(t *testing.T) {
t.Parallel()
ctx := context.Background()
log := e2e.TestLogger(t)
alpha1 := framework.AgonesClient.AgonesV1()
fleets := alpha1.Fleets(framework.Namespace)
flt, err := fleets.Create(ctx, defaultFleet(framework.Namespace), metav1.CreateOptions{})
if assert.Nil(t, err) {
defer fleets.Delete(ctx, flt.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
}
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(flt.Spec.Replicas))
r := rand.New(rand.NewSource(1783))
fleetautoscalers := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(framework.Namespace)
for i := 0; i < 5; i++ {
fas := defaultFleetAutoscaler(flt, framework.Namespace)
bufferSize := r.Int31n(5)
minReplicas := r.Int31n(5)
maxReplicas := r.Int31n(8)
fas.Spec.Policy.Buffer.BufferSize = intstr.FromInt(int(bufferSize))
fas.Spec.Policy.Buffer.MinReplicas = minReplicas
fas.Spec.Policy.Buffer.MaxReplicas = maxReplicas
valid := bufferSize > 0 &&
fas.Spec.Policy.Buffer.MaxReplicas > 0 &&
fas.Spec.Policy.Buffer.MaxReplicas >= bufferSize &&
fas.Spec.Policy.Buffer.MinReplicas <= fas.Spec.Policy.Buffer.MaxReplicas &&
(fas.Spec.Policy.Buffer.MinReplicas == 0 || fas.Spec.Policy.Buffer.MinReplicas >= bufferSize)
log.WithField("buffer", fmt.Sprintf("%#v", fas.Spec.Policy.Buffer)).Info("This is the FAS policy!")
// create a closure to have defered delete func called on each loop iteration.
func() {
fas, err := fleetautoscalers.Create(ctx, fas, metav1.CreateOptions{})
if err == nil {
log.WithField("fas", fas.ObjectMeta.Name).Info("Created!")
defer fleetautoscalers.Delete(ctx, fas.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
require.True(t, valid,
fmt.Sprintf("FleetAutoscaler created even if the parameters are NOT valid: %d %d %d",
bufferSize,
fas.Spec.Policy.Buffer.MinReplicas,
fas.Spec.Policy.Buffer.MaxReplicas))
expectedReplicas := bufferSize
if expectedReplicas < fas.Spec.Policy.Buffer.MinReplicas {
expectedReplicas = fas.Spec.Policy.Buffer.MinReplicas
}
if expectedReplicas > fas.Spec.Policy.Buffer.MaxReplicas {
expectedReplicas = fas.Spec.Policy.Buffer.MaxReplicas
}
// the fleet autoscaler should scale the fleet now to expectedReplicas
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(expectedReplicas))
} else {
require.False(t, valid,
fmt.Sprintf("FleetAutoscaler NOT created even if the parameters are valid: %d %d %d (%s)",
bufferSize,
minReplicas,
maxReplicas, err))
}
}()
}
}
// scaleFleet creates a patch to apply to a Fleet.
// easier for testing, as it removes object generational issues.
func patchFleetAutoscaler(ctx context.Context, fas *autoscalingv1.FleetAutoscaler, bufferSize intstr.IntOrString, minReplicas int32, maxReplicas int32) (*autoscalingv1.FleetAutoscaler, error) {
var bufferSizeFmt string
if bufferSize.Type == intstr.Int {
bufferSizeFmt = fmt.Sprintf("%d", bufferSize.IntValue())
} else {
bufferSizeFmt = fmt.Sprintf("%q", bufferSize.String())
}
patch := fmt.Sprintf(
`[{ "op": "replace", "path": "/spec/policy/buffer/bufferSize", "value": %s },`+
`{ "op": "replace", "path": "/spec/policy/buffer/minReplicas", "value": %d },`+
`{ "op": "replace", "path": "/spec/policy/buffer/maxReplicas", "value": %d }]`,
bufferSizeFmt, minReplicas, maxReplicas)
logrus.
WithField("fleetautoscaler", fas.ObjectMeta.Name).
WithField("bufferSize", bufferSize.String()).
WithField("minReplicas", minReplicas).
WithField("maxReplicas", maxReplicas).
WithField("patch", patch).
Info("Patching fleetautoscaler")
fas, err := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(framework.Namespace).
Patch(ctx, fas.ObjectMeta.Name, types.JSONPatchType, []byte(patch), metav1.PatchOptions{})
logrus.WithField("fleetautoscaler", fas).Info("Patched fleet autoscaler")
return fas, err
}
// defaultFleetAutoscaler returns a default fleet autoscaler configuration for a given fleet
func defaultFleetAutoscaler(f *agonesv1.Fleet, namespace string) *autoscalingv1.FleetAutoscaler {
return &autoscalingv1.FleetAutoscaler{
ObjectMeta: metav1.ObjectMeta{Name: f.ObjectMeta.Name + "-autoscaler", Namespace: namespace},
Spec: autoscalingv1.FleetAutoscalerSpec{
FleetName: f.ObjectMeta.Name,
Policy: autoscalingv1.FleetAutoscalerPolicy{
Type: autoscalingv1.BufferPolicyType,
Buffer: &autoscalingv1.BufferPolicy{
BufferSize: intstr.FromInt(3),
MaxReplicas: 10,
},
},
Sync: &autoscalingv1.FleetAutoscalerSync{
Type: autoscalingv1.FixedIntervalSyncType,
FixedInterval: autoscalingv1.FixedIntervalSync{
Seconds: 30,
},
},
},
}
}
// Test fleetautoscaler with webhook policy type
// scaling from Replicas equals to 1 to 2
func TestAutoscalerWebhook(t *testing.T) {
t.Parallel()
ctx := context.Background()
pod, svc := defaultAutoscalerWebhook(framework.Namespace)
pod, err := framework.KubeClient.CoreV1().Pods(framework.Namespace).Create(ctx, pod, metav1.CreateOptions{})
require.NoError(t, err)
defer framework.KubeClient.CoreV1().Pods(framework.Namespace).Delete(ctx, pod.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
svc.ObjectMeta.Name = ""
svc.ObjectMeta.GenerateName = "test-service-"
svc, err = framework.KubeClient.CoreV1().Services(framework.Namespace).Create(ctx, svc, metav1.CreateOptions{})
require.NoError(t, err)
defer framework.KubeClient.CoreV1().Services(framework.Namespace).Delete(ctx, svc.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
alpha1 := framework.AgonesClient.AgonesV1()
fleets := alpha1.Fleets(framework.Namespace)
flt := defaultFleet(framework.Namespace)
initialReplicasCount := int32(1)
flt.Spec.Replicas = initialReplicasCount
flt, err = fleets.Create(ctx, flt, metav1.CreateOptions{})
require.NoError(t, err)
defer fleets.Delete(ctx, flt.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(flt.Spec.Replicas))
fleetautoscalers := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(framework.Namespace)
fas := defaultFleetAutoscaler(flt, framework.Namespace)
fas.Spec.Policy.Type = autoscalingv1.WebhookPolicyType
fas.Spec.Policy.Buffer = nil
path := "scale"
fas.Spec.Policy.Webhook = &autoscalingv1.WebhookPolicy{
Service: &admregv1.ServiceReference{
Name: svc.ObjectMeta.Name,
Namespace: framework.Namespace,
Path: &path,
},
}
fas, err = fleetautoscalers.Create(ctx, fas, metav1.CreateOptions{})
require.NoError(t, err)
defer fleetautoscalers.Delete(ctx, fas.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
framework.CreateAndApplyAllocation(t, flt)
framework.AssertFleetCondition(t, flt, func(log *logrus.Entry, fleet *agonesv1.Fleet) bool {
log.WithField("fleetStatus", fmt.Sprintf("%+v", fleet.Status)).WithField("fleet", fleet.ObjectMeta.Name).Info("Awaiting fleet.Status.AllocatedReplicas == 1")
return fleet.Status.AllocatedReplicas == 1
})
framework.AssertFleetCondition(t, flt, func(log *logrus.Entry, fleet *agonesv1.Fleet) bool {
log.WithField("fleetStatus", fmt.Sprintf("%+v", fleet.Status)).
WithField("fleet", fleet.ObjectMeta.Name).
WithField("initialReplicasCount", initialReplicasCount).
Info("Awaiting fleet.Status.Replicas > initialReplicasCount")
return fleet.Status.Replicas > initialReplicasCount
})
// Cause an error in Webhook config
// Use wrong service Path
err = wait.PollUntilContextTimeout(context.Background(), time.Second, time.Minute, true, func(ctx context.Context) (bool, error) {
fas, err = fleetautoscalers.Get(ctx, fas.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
return true, err
}
newPath := path + "2"
fas.Spec.Policy.Webhook.Service.Path = &newPath
labels := map[string]string{"fleetautoscaler": "wrong"}
fas.ObjectMeta.Labels = labels
_, err = fleetautoscalers.Update(ctx, fas, metav1.UpdateOptions{})
if err != nil {
logrus.WithError(err).Warn("could not update fleet autoscaler")
return false, nil
}
return true, nil
})
require.NoError(t, err)
var l *corev1.EventList
errString := "Error calculating desired fleet size on FleetAutoscaler"
found := false
// Error - net/http: request canceled while waiting for connection (Client.Timeout exceeded
// while awaiting headers)
err = wait.PollUntilContextTimeout(context.Background(), time.Second, time.Minute, true, func(ctx context.Context) (bool, error) {
events := framework.KubeClient.CoreV1().Events(framework.Namespace)
l, err = events.List(ctx, metav1.ListOptions{FieldSelector: fields.AndSelectors(fields.OneTermEqualSelector("involvedObject.name", fas.ObjectMeta.Name), fields.OneTermEqualSelector("type", "Warning")).String()})
if err != nil {
return false, err
}
for _, v := range l.Items {
if strings.Contains(v.Message, errString) {
found = true
}
}
return found, nil
})
assert.NoError(t, err, "Received unexpected error")
assert.True(t, found, "Expected error was not received")
}
func TestFleetAutoscalerTLSWebhook(t *testing.T) {
t.Parallel()
ctx := context.Background()
// we hardcode 'default' namespace here because certificates above are generated to use this one
defaultNS := "default"
// certs
caPem, _, caCert, caPrivKey, err := generateRootCA()
require.NoError(t, err)
clientCertPEM, clientCertPrivKeyPEM, err := generateLocalCert(caCert, caPrivKey)
require.NoError(t, err)
secr := &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
GenerateName: "autoscalersecret-",
},
Type: corev1.SecretTypeTLS,
Data: make(map[string][]byte),
}
secr.Data[corev1.TLSCertKey] = clientCertPEM
secr.Data[corev1.TLSPrivateKeyKey] = clientCertPrivKeyPEM
secrets := framework.KubeClient.CoreV1().Secrets(defaultNS)
secr, err = secrets.Create(ctx, secr.DeepCopy(), metav1.CreateOptions{})
if assert.Nil(t, err) {
defer secrets.Delete(ctx, secr.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
}
pod, svc := defaultAutoscalerWebhook(defaultNS)
pod.Spec.Volumes = make([]corev1.Volume, 1)
pod.Spec.Volumes[0] = corev1.Volume{
Name: "secret-volume",
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: secr.ObjectMeta.Name,
},
},
}
pod.Spec.Containers[0].VolumeMounts = []corev1.VolumeMount{{
Name: "secret-volume",
MountPath: "/home/service/certs",
}}
pod, err = framework.KubeClient.CoreV1().Pods(defaultNS).Create(ctx, pod.DeepCopy(), metav1.CreateOptions{})
if assert.Nil(t, err) {
defer framework.KubeClient.CoreV1().Pods(defaultNS).Delete(ctx, pod.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
} else {
// if we could not create the webhook, there is no point going further
assert.FailNow(t, "Failed creating webhook pod, aborting TestTlsWebhook")
}
// since we're using statically-named service, perform a best-effort delete of a previous service
err = framework.KubeClient.CoreV1().Services(defaultNS).Delete(ctx, svc.ObjectMeta.Name, waitForDeletion)
if err != nil {
assert.True(t, k8serrors.IsNotFound(err))
}
// making sure the service is really gone.
err = wait.PollUntilContextTimeout(context.Background(), 2*time.Second, time.Minute, true, func(ctx context.Context) (bool, error) {
_, err := framework.KubeClient.CoreV1().Services(defaultNS).Get(ctx, svc.ObjectMeta.Name, metav1.GetOptions{})
return k8serrors.IsNotFound(err), nil
})
assert.Nil(t, err)
svc, err = framework.KubeClient.CoreV1().Services(defaultNS).Create(ctx, svc.DeepCopy(), metav1.CreateOptions{})
if assert.Nil(t, err) {
defer framework.KubeClient.CoreV1().Services(defaultNS).Delete(ctx, svc.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
} else {
// if we could not create the service, there is no point going further
assert.FailNow(t, "Failed creating service, aborting TestTlsWebhook")
}
alpha1 := framework.AgonesClient.AgonesV1()
fleets := alpha1.Fleets(defaultNS)
flt := defaultFleet(defaultNS)
initialReplicasCount := int32(1)
flt.Spec.Replicas = initialReplicasCount
flt, err = fleets.Create(ctx, flt.DeepCopy(), metav1.CreateOptions{})
if assert.Nil(t, err) {
defer fleets.Delete(ctx, flt.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
}
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(flt.Spec.Replicas))
fleetautoscalers := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(defaultNS)
fas := defaultFleetAutoscaler(flt, defaultNS)
fas.Spec.Policy.Type = autoscalingv1.WebhookPolicyType
fas.Spec.Policy.Buffer = nil
path := "scale"
fas.Spec.Policy.Webhook = &autoscalingv1.WebhookPolicy{
Service: &admregv1.ServiceReference{
Name: svc.ObjectMeta.Name,
Namespace: defaultNS,
Path: &path,
},
CABundle: caPem,
}
fas, err = fleetautoscalers.Create(ctx, fas.DeepCopy(), metav1.CreateOptions{})
if assert.Nil(t, err) {
defer fleetautoscalers.Delete(ctx, fas.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
} else {
// if we could not create the autoscaler, their is no point going further
assert.FailNow(t, "Failed creating autoscaler, aborting TestTlsWebhook")
}
framework.CreateAndApplyAllocation(t, flt)
framework.AssertFleetCondition(t, flt, func(_ *logrus.Entry, fleet *agonesv1.Fleet) bool {
return fleet.Status.AllocatedReplicas == 1
})
framework.AssertFleetCondition(t, flt, func(_ *logrus.Entry, fleet *agonesv1.Fleet) bool {
return fleet.Status.Replicas > initialReplicasCount
})
}
func defaultAutoscalerWebhook(namespace string) (*corev1.Pod, *corev1.Service) {
l := make(map[string]string)
appName := fmt.Sprintf("autoscaler-webhook-%v", time.Now().UnixNano())
l["app"] = appName
l[e2e.AutoCleanupLabelKey] = e2e.AutoCleanupLabelValue
pod := &corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
GenerateName: "auto-webhook-",
Namespace: namespace,
Labels: l,
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{{Name: "webhook",
Image: "us-docker.pkg.dev/agones-images/examples/autoscaler-webhook:0.16",
ImagePullPolicy: corev1.PullAlways,
Ports: []corev1.ContainerPort{{
ContainerPort: 8000,
Name: "autoscaler",
}},
}},
},
}
m := make(map[string]string)
m["app"] = appName
service := &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: "autoscaler-tls-service",
Namespace: namespace,
},
Spec: corev1.ServiceSpec{
Selector: m,
Ports: []corev1.ServicePort{{
Name: "newport",
Port: 8000,
TargetPort: intstr.IntOrString{StrVal: "autoscaler"},
}},
},
}
return pod, service
}
// Instructions: https://agones.dev/site/docs/getting-started/create-webhook-fleetautoscaler/#chapter-2-configuring-https-fleetautoscaler-webhook-with-ca-bundle
// but also, credits/inspiration to https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/cloudprovider/aws/aws-sdk-go/awstesting/certificate_utils.go
func generateRootCA() (
caPEM, caPrivKeyPEM []byte, caCert *x509.Certificate, caPrivKey *rsa.PrivateKey, err error,
) {
caCert = &x509.Certificate{
SerialNumber: big.NewInt(42),
Subject: pkix.Name{
Country: []string{"US"},
Organization: []string{"Agones"},
CommonName: "Test Root CA",
},
NotBefore: time.Now().Add(-time.Minute),
NotAfter: time.Now().AddDate(1, 0, 0),
KeyUsage: x509.KeyUsageCertSign | x509.KeyUsageCRLSign | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{
x509.ExtKeyUsageClientAuth,
x509.ExtKeyUsageServerAuth,
},
BasicConstraintsValid: true,
IsCA: true,
}
// Create CA private and public key
caPrivKey, err = rsa.GenerateKey(cryptorand.Reader, 4096)
if err != nil {
return nil, nil, nil, nil, fmt.Errorf("failed generate CA RSA key, %w", err)
}
// Create CA certificate
caBytes, err := x509.CreateCertificate(cryptorand.Reader, caCert, caCert, &caPrivKey.PublicKey, caPrivKey)
if err != nil {
return nil, nil, nil, nil, fmt.Errorf("failed generate CA certificate, %w", err)
}
// PEM encode CA certificate and private key
var caPEMBuf bytes.Buffer
err = pem.Encode(&caPEMBuf, &pem.Block{
Type: "CERTIFICATE",
Bytes: caBytes,
})
if err != nil {
return nil, nil, nil, nil, fmt.Errorf("failed to endcode root PEM, %w", err)
}
var caPrivKeyPEMBuf bytes.Buffer
err = pem.Encode(&caPrivKeyPEMBuf, &pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(caPrivKey),
})
if err != nil {
return nil, nil, nil, nil, fmt.Errorf("failed to endcode private root PEM, %w", err)
}
return caPEMBuf.Bytes(), caPrivKeyPEMBuf.Bytes(), caCert, caPrivKey, nil
}
func generateLocalCert(parentCert *x509.Certificate, parentPrivKey *rsa.PrivateKey) (
certPEM, certPrivKeyPEM []byte, err error,
) {
cert := &x509.Certificate{
SerialNumber: big.NewInt(42),
Subject: pkix.Name{
Country: []string{"US"},
Organization: []string{"Agones"},
CommonName: "autoscaler-tls-service.default.svc",
},
NotBefore: time.Now().Add(-time.Minute),
NotAfter: time.Now().AddDate(1, 0, 0),
ExtKeyUsage: []x509.ExtKeyUsage{
x509.ExtKeyUsageClientAuth,
x509.ExtKeyUsageServerAuth,
},
KeyUsage: x509.KeyUsageDigitalSignature,
DNSNames: []string{"autoscaler-tls-service.default.svc"},
}
// Create server private and public key
certPrivKey, err := rsa.GenerateKey(cryptorand.Reader, 4096)
if err != nil {
return nil, nil, fmt.Errorf("failed to generate server RSA private key, %w", err)
}
// Create server certificate
certBytes, err := x509.CreateCertificate(cryptorand.Reader, cert, parentCert, &certPrivKey.PublicKey, parentPrivKey)
if err != nil {
return nil, nil, fmt.Errorf("failed to generate server certificate, %w", err)
}
// PEM encode certificate and private key
var certPEMBuf bytes.Buffer
err = pem.Encode(&certPEMBuf, &pem.Block{
Type: "CERTIFICATE",
Bytes: certBytes,
})
if err != nil {
return nil, nil, fmt.Errorf("failed to endcode certificate pem, %w", err)
}
var certPrivKeyPEMBuf bytes.Buffer
err = pem.Encode(&certPrivKeyPEMBuf, &pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(certPrivKey),
})
if err != nil {
return nil, nil, fmt.Errorf("failed to endcode private pem, %w", err)
}
return certPEMBuf.Bytes(), certPrivKeyPEMBuf.Bytes(), nil
}
func TestCounterAutoscaler(t *testing.T) {
if !runtime.FeatureEnabled(runtime.FeatureCountsAndLists) {
t.SkipNow()
}
t.Parallel()
ctx := context.Background()
client := framework.AgonesClient.AgonesV1()
log := e2e.TestLogger(t)
flt := defaultFleet(framework.Namespace)
flt.Spec.Template.Spec.Counters = map[string]agonesv1.CounterStatus{
"players": {
Count: 7, // AggregateCount 21
Capacity: 10, // AggregateCapacity 30
},
"sessions": {
Count: 0, // AggregateCount 0
Capacity: 5, // AggregateCapacity 15
},
}
flt, err := client.Fleets(framework.Namespace).Create(ctx, flt.DeepCopy(), metav1.CreateOptions{})
require.NoError(t, err)
defer client.Fleets(framework.Namespace).Delete(ctx, flt.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(flt.Spec.Replicas))
fleetautoscalers := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(framework.Namespace)
counterFas := func(f func(fap *autoscalingv1.FleetAutoscalerPolicy)) *autoscalingv1.FleetAutoscaler {
fas := autoscalingv1.FleetAutoscaler{
ObjectMeta: metav1.ObjectMeta{Name: flt.ObjectMeta.Name + "-counter-autoscaler", Namespace: framework.Namespace},
Spec: autoscalingv1.FleetAutoscalerSpec{
FleetName: flt.ObjectMeta.Name,
Policy: autoscalingv1.FleetAutoscalerPolicy{
Type: autoscalingv1.CounterPolicyType,
},
Sync: &autoscalingv1.FleetAutoscalerSync{
Type: autoscalingv1.FixedIntervalSyncType,
FixedInterval: autoscalingv1.FixedIntervalSync{
Seconds: 1,
},
},
},
}
f(&fas.Spec.Policy)
return &fas
}
testCases := map[string]struct {
fas *autoscalingv1.FleetAutoscaler
wantFasErr bool
wantReplicas int32
}{
"Scale Down Buffer Int": {
fas: counterFas(func(fap *autoscalingv1.FleetAutoscalerPolicy) {
fap.Counter = &autoscalingv1.CounterPolicy{
Key: "players",
BufferSize: intstr.FromInt(5), // Buffer refers to the available capacity (AggregateCapacity - AggregateCount)
MinCapacity: 10, // Min and MaxCapacity refer to the total capacity aggregated across the fleet, NOT the available capacity
MaxCapacity: 100,
}
}),
wantFasErr: false,
wantReplicas: 2,
},
"Scale Up Buffer Int": {
fas: counterFas(func(fap *autoscalingv1.FleetAutoscalerPolicy) {
fap.Counter = &autoscalingv1.CounterPolicy{
Key: "players",
BufferSize: intstr.FromInt(25),
MinCapacity: 25,
MaxCapacity: 100,
}
}),
wantFasErr: false,
wantReplicas: 9,
},
"Scale Down to MaxCapacity": {
fas: counterFas(func(fap *autoscalingv1.FleetAutoscalerPolicy) {
fap.Counter = &autoscalingv1.CounterPolicy{
Key: "sessions",
BufferSize: intstr.FromInt(5),
MinCapacity: 0,
MaxCapacity: 5,
}
}),
wantFasErr: false,
wantReplicas: 1,
},
"Scale Up to MinCapacity": {
fas: counterFas(func(fap *autoscalingv1.FleetAutoscalerPolicy) {
fap.Counter = &autoscalingv1.CounterPolicy{
Key: "sessions",
BufferSize: intstr.FromInt(1),
MinCapacity: 30,
MaxCapacity: 100,
}
}),
wantFasErr: false,
wantReplicas: 6,
},
"Cannot scale up (MaxCapacity)": {
fas: counterFas(func(fap *autoscalingv1.FleetAutoscalerPolicy) {
fap.Counter = &autoscalingv1.CounterPolicy{
Key: "players",
BufferSize: intstr.FromInt(10),
MinCapacity: 10,
MaxCapacity: 30,
}
}),
wantFasErr: false,
wantReplicas: 3,
},
"Cannot scale down (MinCapacity)": {
fas: counterFas(func(fap *autoscalingv1.FleetAutoscalerPolicy) {
fap.Counter = &autoscalingv1.CounterPolicy{
Key: "sessions",
BufferSize: intstr.FromInt(5),
MinCapacity: 15,
MaxCapacity: 100,
}
}),
wantFasErr: false,
wantReplicas: 3,
},
"Buffer Greater than MinCapacity invalid FAS": {
fas: counterFas(func(fap *autoscalingv1.FleetAutoscalerPolicy) {
fap.Counter = &autoscalingv1.CounterPolicy{
Key: "players",
BufferSize: intstr.FromInt(25),
MinCapacity: 10,
MaxCapacity: 100,
}
}),
wantFasErr: true,
},
}
for name, testCase := range testCases {
t.Run(name, func(t *testing.T) {
fas, err := fleetautoscalers.Create(ctx, testCase.fas, metav1.CreateOptions{})
if testCase.wantFasErr {
assert.Error(t, err)
return
}
assert.NoError(t, err)
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(testCase.wantReplicas))
fleetautoscalers.Delete(ctx, fas.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
// Return to starting 3 replicas
framework.ScaleFleet(t, log, flt, 3)
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(3))
})
}
}
// nolint:dupl // Linter errors on lines are duplicate of TestListAutoscalerWithNoReplicas
func TestCounterAutoscalerWithNoReplicas(t *testing.T) {
if !runtime.FeatureEnabled(runtime.FeatureCountsAndLists) {
t.SkipNow()
}
t.Parallel()
ctx := context.Background()
client := framework.AgonesClient.AgonesV1()
log := e2e.TestLogger(t)
flt := defaultEmptyFleet(framework.Namespace)
flt.Spec.Template.Spec.Counters = map[string]agonesv1.CounterStatus{
"games": {
Capacity: 5,
},
}
flt, err := client.Fleets(framework.Namespace).Create(ctx, flt.DeepCopy(), metav1.CreateOptions{})
require.NoError(t, err)
defer client.Fleets(framework.Namespace).Delete(ctx, flt.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint:errcheck
framework.AssertFleetCondition(t, flt, e2e.FleetReadyCount(flt.Spec.Replicas))
fleetautoscalers := framework.AgonesClient.AutoscalingV1().FleetAutoscalers(framework.Namespace)
counterFas := func(f func(fap *autoscalingv1.FleetAutoscalerPolicy)) *autoscalingv1.FleetAutoscaler {
fas := autoscalingv1.FleetAutoscaler{
ObjectMeta: metav1.ObjectMeta{Name: flt.ObjectMeta.Name + "-counter-autoscaler", Namespace: framework.Namespace},
Spec: autoscalingv1.FleetAutoscalerSpec{
FleetName: flt.ObjectMeta.Name,
Policy: autoscalingv1.FleetAutoscalerPolicy{
Type: autoscalingv1.CounterPolicyType,
},
Sync: &autoscalingv1.FleetAutoscalerSync{
Type: autoscalingv1.FixedIntervalSyncType,
FixedInterval: autoscalingv1.FixedIntervalSync{
Seconds: 1,
},
},
},
}
f(&fas.Spec.Policy)
return &fas
}
testCases := map[string]struct {
fas *autoscalingv1.FleetAutoscaler
wantFasErr bool
wantReplicas int32
}{
"Scale Up to MinCapacity": {
fas: counterFas(func(fap *autoscalingv1.FleetAutoscalerPolicy) {
fap.Counter = &autoscalingv1.CounterPolicy{
Key: "games",
BufferSize: intstr.FromInt(3),