$ oc get clusterversion
NAME      VERSION                              AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.15.0-0.nightly-2023-12-11-033133   True        False         122m    Cluster version is 4.15.0-0.nightly-2023-12-11-033133

$ oc api-resources | grep -i metrics
nodes                                                                                                                        metrics.k8s.io/v1beta1                        false        NodeMetrics
pods                                                                                                                         metrics.k8s.io/v1beta1                        true         PodMetrics

$ oc explain PodMetrics
the server doesn't have a resource type "PodMetrics"
$ oc explain NodeMetrics
the server doesn't have a resource type "NodeMetrics"

$ oc get NodeMetrics
error: the server doesn't have a resource type "NodeMetrics"
$ oc get PodMetrics -A
error: the server doesn't have a resource type "PodMetrics"

$ oc get clusterversion
NAME      VERSION                              AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.14.0-0.nightly-2023-12-11-135902   True        False         88m     Cluster version is 4.14.0-0.nightly-2023-12-11-135902

$ oc api-resources | grep -i metrics
nodes                                                                                                                        metrics.k8s.io/v1beta1                        false        NodeMetrics
pods                                                                                                                         metrics.k8s.io/v1beta1                        true         PodMetrics

$ oc explain PodMetrics
GROUP:      metrics.k8s.io
KIND:       PodMetrics
VERSION:    v1beta1DESCRIPTION:
    PodMetrics sets resource usage metrics of a pod.
...

$ oc explain NodeMetrics
GROUP:      metrics.k8s.io
KIND:       NodeMetrics
VERSION:    v1beta1DESCRIPTION:
    NodeMetrics sets resource usage metrics of a node.
...

$ oc get PodMetrics -A
NAMESPACE                                          NAME                                                                       CPU    MEMORY      WINDOW
openshift-apiserver                                apiserver-65f777466-4m8nj                                                  9m     297512Ki    5m0s
openshift-apiserver                                apiserver-65f777466-g7n72                                                  10m    313308Ki    5m0s
openshift-apiserver                                apiserver-65f777466-xzd8l                                                  12m    293008Ki    5m0s
openshift-apiserver-operator                       openshift-apiserver-operator-54945b8bbd-bxkcj                              3m     119264Ki    5m0s
...

$ oc get NodeMetrics
NAME                                        CPU     MEMORY      WINDOW
ip-10-0-20-163.us-east-2.compute.internal   765m    8349848Ki   5m0s
ip-10-0-22-189.us-east-2.compute.internal   388m    5363132Ki   5m0s
ip-10-0-41-231.us-east-2.compute.internal   1274m   7243548Ki   5m0s
... 

4.15.0-0.nightly-2023-12-11-033133

always

1. see the description

4.15 server does not have PodMetrics/NodeMetrics

should have