apiVersion: v1
kind: Pod
metadata:
  name: nginx
  namespace: default
spec:
  containers:
    - name: nginx
      image: nginx:latest
      resizePolicy:
        - resourceName: cpu
          restartPolicy: NotRequired
        - resourceName: memory
          restartPolicy: NotRequired
      resources:
        limits:
          memory: "200Mi"
          cpu: "100m"
        requests:
          memory: "200Mi"
          cpu: "100m"

[root@k8s-master-01:~ 16:54:55] # kubectl version
Client Version: v1.28.2
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.28.2
[root@k8s-master-01:~ 16:56:37] # kubectl patch pod nginx --patch '{"spec":{"containers":[{"name":"nginx", "resources":{"requests":{"cpu":"100m"}, "limits":{"cpu":"50m"}}}]}}'
The Pod "nginx" is invalid: 
* spec.containers[0].resources.requests: Invalid value: "100m": must be less than or equal to cpu limit of 50m
* metadata: Invalid value: "Burstable": Pod QoS is immutable
[root@k8s-master-01:~ 16:56:50] # kubectl patch pod nginx --patch '{"spec":{"containers":[{"name":"nginx", "resources":{"requests":{"cpu":"100m"}, "limits":{"cpu":"100m"}}}]}}'
pod/nginx patched

[root@k8s-master-01:/opt/kubernetes/cfg 16:55:28] # kubectl version
Client Version: v1.32.2
Kustomize Version: v5.5.0
Server Version: v1.32.2
[root@k8s-master-01:/opt/kubernetes/cfg 16:58:12] # kubectl patch pod nginx --patch '{"spec":{"containers":[{"name":"nginx", "resources":{"requests":{"cpu":"100m"}, "limits":{"cpu":"50m"}}}]}}'
The Pod "nginx" is invalid: 
* spec.containers[0].resources.requests: Invalid value: "100m": must be less than or equal to cpu limit of 50m
* 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-cn86g", 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: 100, scale: -3}, s: "100m", Format: "DecimalSI"},
+ 					s"cpu":    {i: resource.int64Amount{value: 50, scale: -3}, s: "50m", Format: "DecimalSI"},
  					s"memory": {i: {...}, Format: "BinarySI"},
  				},
  				Requests: {s"cpu": {i: {...}, s: "100m", Format: "DecimalSI"}, s"memory": {i: {...}, Format: "BinarySI"}},
  				Claims:   nil,
  			},
  			ResizePolicy:  {{ResourceName: s"cpu", RestartPolicy: "NotRequired"}, {ResourceName: s"memory", RestartPolicy: "NotRequired"}},
  			RestartPolicy: nil,
  			... // 13 identical fields
  		},
  	},
  	EphemeralContainers: nil,
  	RestartPolicy:       "Always",
  	... // 29 identical fields
  }