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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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9
pkg/kubelet/cm/cpumanager/policy_static.go
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@@ -20,9 +20,11 @@ import (
"fmt"
v1 "k8s.io/api/core/v1"
utilfeature "k8s.io/apiserver/pkg/util/feature"
"k8s.io/klog/v2"
podutil "k8s.io/kubernetes/pkg/api/v1/pod"
v1qos "k8s.io/kubernetes/pkg/apis/core/v1/helper/qos"
"k8s.io/kubernetes/pkg/features"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/state"
"k8s.io/kubernetes/pkg/kubelet/cm/cpumanager/topology"
"k8s.io/kubernetes/pkg/kubelet/cm/cpuset"
@@ -380,6 +382,11 @@ func (p *staticPolicy) guaranteedCPUs(pod *v1.Pod, container *v1.Container) int
return 0
}
cpuQuantity := container.Resources.Requests[v1.ResourceCPU]
if utilfeature.DefaultFeatureGate.Enabled(features.InPlacePodVerticalScaling) {
if cs, ok := podutil.GetContainerStatus(pod.Status.ContainerStatuses, container.Name); ok {
cpuQuantity = cs.ResourcesAllocated[v1.ResourceCPU]
}
}
if cpuQuantity.Value()*1000 != cpuQuantity.MilliValue() {
return 0
}