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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>
66 lines
2.3 KiB
Go
66 lines
2.3 KiB
Go
/*
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Copyright 2021 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package state
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import (
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"encoding/json"
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"k8s.io/api/core/v1"
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"k8s.io/kubernetes/pkg/kubelet/checkpointmanager"
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"k8s.io/kubernetes/pkg/kubelet/checkpointmanager/checksum"
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)
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var _ checkpointmanager.Checkpoint = &PodResourceAllocationCheckpoint{}
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// PodResourceAllocationCheckpoint is used to store resources allocated to a pod in checkpoint
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type PodResourceAllocationCheckpoint struct {
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AllocationEntries map[string]map[string]v1.ResourceList `json:"allocationEntries,omitempty"`
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ResizeStatusEntries map[string]v1.PodResizeStatus `json:"resizeStatusEntries,omitempty"`
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Checksum checksum.Checksum `json:"checksum"`
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}
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// NewPodResourceAllocationCheckpoint returns an instance of Checkpoint
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func NewPodResourceAllocationCheckpoint() *PodResourceAllocationCheckpoint {
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//lint:ignore unexported-type-in-api user-facing error message
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return &PodResourceAllocationCheckpoint{
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AllocationEntries: make(map[string]map[string]v1.ResourceList),
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ResizeStatusEntries: make(map[string]v1.PodResizeStatus),
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}
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}
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// MarshalCheckpoint returns marshalled checkpoint
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func (prc *PodResourceAllocationCheckpoint) MarshalCheckpoint() ([]byte, error) {
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// make sure checksum wasn't set before so it doesn't affect output checksum
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prc.Checksum = 0
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prc.Checksum = checksum.New(prc)
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return json.Marshal(*prc)
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}
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// UnmarshalCheckpoint tries to unmarshal passed bytes to checkpoint
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func (prc *PodResourceAllocationCheckpoint) UnmarshalCheckpoint(blob []byte) error {
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return json.Unmarshal(blob, prc)
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}
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// VerifyChecksum verifies that current checksum of checkpoint is valid
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func (prc *PodResourceAllocationCheckpoint) VerifyChecksum() error {
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ck := prc.Checksum
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prc.Checksum = 0
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err := ck.Verify(prc)
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prc.Checksum = ck
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return err
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}
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