[FG:InPlacePodVerticalScaling] Incomplete prerequisites for “Resize CPU and Memory Resources assigned to Containers” #41365
Open
Description
my k8s version:1.27.2
kubectl get nodes
NAME STATUS ROLES AGE VERSION
172.30.94.14 Ready 7d v1.27.2
172.30.94.201 Ready 7d v1.27.2
ecs6w3fxmxy5c.novalocal Ready control-plane 7d v1.27.2
Problem
I want to try in-place update and I do as the document describe.
But when I execute the cmd kubectl -n qos-example patch pod qos-demo-5 --patch '{"spec":{"containers":[{"name":"qos-demo-ctr-5", "resources":{"requests":{"cpu":"800m"}, "limits":{"cpu":"800m"}}}]}}'
,it threw err:
The Pod "qos-demo-5" is invalid: spec: Forbidden: pod updates may not change fields other than `spec.containers[*].image`,`spec.initContainers[*].image`,`spec.activeDeadlineSeconds`,`spec.tolerations` (only additions to existing tolerations),`spec.terminationGracePeriodSeconds` (allow it to be set to 1 if it was previously negative)
core.PodSpec{
Volumes: {{Name: "kube-api-access-p29n4", VolumeSource: {Projected: &{Sources: {{ServiceAccountToken: &{ExpirationSeconds: 3607, Path: "token"}}, {ConfigMap: &{LocalObjectReference: {Name: "kube-root-ca.crt"}, Items: {{Key: "ca.crt", Path: "ca.crt"}}}}, {DownwardAPI: &{Items: {{Path: "namespace", FieldRef: &{APIVersion: "v1", FieldPath: "metadata.namespace"}}}}}}, DefaultMode: &420}}}},
InitContainers: nil,
Containers: []core.Container{
{
... // 6 identical fields
EnvFrom: nil,
Env: nil,
Resources: core.ResourceRequirements{
Limits: core.ResourceList{
- s"cpu": {i: resource.int64Amount{value: 700, scale: -3}, s: "700m", Format: "DecimalSI"},
+ s"cpu": {i: resource.int64Amount{value: 800, scale: -3}, s: "800m", Format: "DecimalSI"},
s"memory": {i: {...}, Format: "BinarySI"},
},
Requests: core.ResourceList{
- s"cpu": {i: resource.int64Amount{value: 700, scale: -3}, s: "700m", Format: "DecimalSI"},
+ s"cpu": {i: resource.int64Amount{value: 800, scale: -3}, s: "800m", Format: "DecimalSI"},
s"memory": {i: {...}, Format: "BinarySI"},
},
Claims: nil,
},
ResizePolicy: nil,
VolumeMounts: {{Name: "kube-api-access-p29n4", ReadOnly: true, MountPath: "/var/run/secrets/kubernetes.io/serviceaccount"}},
... // 12 identical fields
},
},
EphemeralContainers: nil,
RestartPolicy: "Always",
... // 28 identical fields
}
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