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In-place Pod Vertical Scaling - core implementation

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1. Core Kubelet changes to implement In-place Pod Vertical Scaling.
2. E2E tests for In-place Pod Vertical Scaling.
3. Refactor kubelet code and add missing tests (Derek's kubelet review)
4. Add a new hash over container fields without Resources field to allow feature gate toggling without restarting containers not using the feature.
5. Fix corner-case where resize A->B->A gets ignored
6. Add cgroup v2 support to pod resize E2E test.
KEP: /enhancements/keps/sig-node/1287-in-place-update-pod-resources

Co-authored-by: Chen Wang <Chen.Wang1@ibm.com>
This commit is contained in:
Vinay Kulkarni
2022-11-04 13:47:33 -07:00
committed by vinay kulkarni
parent 231849a908
commit f2bd94a0de
48 changed files with 4639 additions and 56 deletions
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6
pkg/kubelet/kuberuntime/labels_test.go
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@@ -23,6 +23,9 @@ import (
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
utilfeature "k8s.io/apiserver/pkg/util/feature"
featuregatetesting "k8s.io/component-base/featuregate/testing"
"k8s.io/kubernetes/pkg/features"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
)
@@ -152,11 +155,13 @@ func TestContainerAnnotations(t *testing.T) {
PodDeletionGracePeriod: pod.DeletionGracePeriodSeconds,
PodTerminationGracePeriod: pod.Spec.TerminationGracePeriodSeconds,
Hash: kubecontainer.HashContainer(container),
HashWithoutResources: kubecontainer.HashContainerWithoutResources(container),
RestartCount: restartCount,
TerminationMessagePath: container.TerminationMessagePath,
PreStopHandler: container.Lifecycle.PreStop,
}
defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.InPlacePodVerticalScaling, true)()
// Test whether we can get right information from label
annotations := newContainerAnnotations(container, pod, restartCount, opts)
containerInfo := getContainerInfoFromAnnotations(annotations)
@@ -177,6 +182,7 @@ func TestContainerAnnotations(t *testing.T) {
expected.PreStopHandler = nil
// Because container is changed, the Hash should be updated
expected.Hash = kubecontainer.HashContainer(container)
expected.HashWithoutResources = kubecontainer.HashContainerWithoutResources(container)
annotations = newContainerAnnotations(container, pod, restartCount, opts)
containerInfo = getContainerInfoFromAnnotations(annotations)
if !reflect.DeepEqual(containerInfo, expected) {