It just happen on almalinux 9.0 server which I add into cluster today. k8s version is 1.19.16
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
k8s-dev-node1 110m 11% 2601Mi 104%
k8s-dev-node8 160m 5% 3600Mi 56%
k8s-dev-node9 105m 3% 2201Mi 34%
k8s-dev-node16 <unknown> <unknown> <unknown> <unknown>
hostNetwork has been seted on metrics server deployment. top pod is fine and get node stats is fine too.
kubectl get --raw /api/v1/nodes/k8s-dev-node16/proxy/stats/summary
{
"node": {
"nodeName": "k8s-dev-node16",
"systemContainers": [
{
"name": "kubelet",
"startTime": "2022-11-10T05:52:14Z",
"cpu": {
"time": "2022-11-10T09:42:50Z",
"usageNanoCores": 17536218,
"usageCoreNanoSeconds": 221415603000
},
"memory": {
"time": "2022-11-10T09:42:50Z",
"availableBytes": 8011243520,
"usageBytes": 58892288,
"workingSetBytes": 46686208,
"rssBytes": 0,
"pageFaults": 2555049,
"majorPageFaults": 1
}
},
...