e2e test

test/pkg/environment/aws/expectations.go

@@ -210,6 +210,14 @@ func (env *Environment) GetSpotInstanceRequest(id *string) *ec2.SpotInstanceRequ
 	return siro.SpotInstanceRequests[0]
 }
 
+// GetZones returns all available zones mapped from zone -> zone type
+func (env *Environment) GetZones() map[string]string {
+	output := lo.Must(env.EC2API.DescribeAvailabilityZones(&ec2.DescribeAvailabilityZonesInput{}))
+	return lo.Associate(output.AvailabilityZones, func(zone *ec2.AvailabilityZone) (string, string) {
+		return lo.FromPtr(zone.ZoneName), lo.FromPtr(zone.ZoneType)
+	})
+}
+
 // GetSubnets returns all subnets matching the label selector
 // mapped from AZ -> {subnet-ids...}
 func (env *Environment) GetSubnets(tags map[string]string) map[string][]string {

test/suites/localzone/suite_test.go

@@ -0,0 +1,104 @@
+/*
+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 localzone_test
+
+import (
+	"testing"
+
+	"github.com/samber/lo"
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/resource"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/labels"
+
+	corev1beta1 "sigs.k8s.io/karpenter/pkg/apis/v1beta1"
+	"sigs.k8s.io/karpenter/pkg/test"
+
+	"github.com/aws/karpenter-provider-aws/pkg/apis/v1beta1"
+	"github.com/aws/karpenter-provider-aws/test/pkg/environment/aws"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var env *aws.Environment
+var nodeClass *v1beta1.EC2NodeClass
+var nodePool *corev1beta1.NodePool
+
+func TestLocalZone(t *testing.T) {
+	RegisterFailHandler(Fail)
+	BeforeSuite(func() {
+		env = aws.NewEnvironment(t)
+	})
+	AfterSuite(func() {
+		env.Stop()
+	})
+	RunSpecs(t, "LocalZone")
+}
+
+var _ = BeforeEach(func() {
+	env.BeforeEach()
+	nodeClass = env.DefaultEC2NodeClass()
+	// The majority of local zones do not support GP3. Feature support in local zones can be tracked here:
+	// https://aws.amazon.com/about-aws/global-infrastructure/localzones/features/
+	nodeClass.Spec.BlockDeviceMappings = append(nodeClass.Spec.BlockDeviceMappings, &v1beta1.BlockDeviceMapping{
+		DeviceName: lo.ToPtr("/dev/xvda"),
+		EBS: &v1beta1.BlockDevice{
+			VolumeSize: func() *resource.Quantity {
+				quantity, err := resource.ParseQuantity("80Gi")
+				Expect(err).To(BeNil())
+				return &quantity
+			}(),
+			VolumeType: lo.ToPtr("gp2"),
+			Encrypted:  lo.ToPtr(false),
+		},
+	})
+	nodePool = env.DefaultNodePool(nodeClass)
+	nodePool.Spec.Template.Spec.Requirements = append(nodePool.Spec.Template.Spec.Requirements, v1.NodeSelectorRequirement{
+		Key:      v1.LabelTopologyZone,
+		Operator: v1.NodeSelectorOpIn,
+		Values:   lo.Keys(lo.PickByValues(env.GetZones(), []string{"local-zone"})),
+	})
+})
+var _ = AfterEach(func() { env.Cleanup() })
+var _ = AfterEach(func() { env.AfterEach() })
+
+var _ = Describe("LocalZone", func() {
+	It("should successfully scale up nodes in a local zone", func() {
+		nodeCount := 3
+		depLabels := map[string]string{
+			"foo": "bar",
+		}
+		dep := test.Deployment(test.DeploymentOptions{
+			PodOptions: test.PodOptions{
+				ObjectMeta: metav1.ObjectMeta{
+					Labels: depLabels,
+				},
+				TopologySpreadConstraints: []v1.TopologySpreadConstraint{{
+					TopologyKey:       v1.LabelHostname,
+					MaxSkew:           1,
+					WhenUnsatisfiable: v1.DoNotSchedule,
+					LabelSelector: &metav1.LabelSelector{
+						MatchLabels: depLabels,
+					},
+				}},
+			},
+			Replicas: int32(nodeCount),
+		})
+		env.ExpectCreated(nodeClass, nodePool, dep)
+		env.EventuallyExpectHealthyPodCount(labels.SelectorFromSet(depLabels), nodeCount)
+		env.EventuallyExpectNodeCount("==", nodeCount)
+	})
+})