Metrics-Server异常

现象：

[root@k8s-master1]:~/yaml/k8s# kubectl top pod nfs-provisioner-7cb5bf8868-rnglp  

Error from server (NotFound): podmetrics.metrics.k8s.io "default/nfs-provisioner-7cb5bf8868-rnglp" not found

[root@k8s-master1]:~/yaml/k8s# kubectl logs -f -n kube-system metrics-server-cbd456c66-plvbj  

I0530 08:13:37.616336       1 serving.go:312] Generated self-signed cert (/tmp/apiserver.crt, /tmp/apiserver.key)

I0530 08:13:39.000688       1 secure_serving.go:116] Serving securely on [::]:4443

E0530 08:13:46.742550       1 reststorage.go:160] unable to fetch pod metrics for pod default/nfs-provisioner-7cb5bf8868-rnglp: no metrics known for pod

# vim metrics.yaml 
....
      containers:
      - name: metrics-server
        image: registry.cn-hangzhou.aliyuncs.com/google_containers/metrics-server-amd64:v0.3.6
        imagePullPolicy: IfNotPresent
        args:
          - --cert-dir=/tmp
          - --secure-port=4443          # 这边的port要改成自己的
          - --kubelet-preferred-address-types=InternalIP,Hostname,InternalDNS,ExternalDNS,ExternalIP
          - --kubelet-insecure-tls=true
          - --authorization-always-allow-paths=/livez,/readyz
          - --metric-resolution=15s
        ports:
        - name: main-port
          containerPort: 4443
          protocol: TCP
....
# kubectl apply -f metrics.yaml
# kubectl get pods -n kube-system 
NAME                                      READY   STATUS    RESTARTS   AGE
calico-kube-controllers-97769f7c7-dgc5q   1/1     Running   1          145d
calico-node-gxtq4                         1/1     Running   1          145d
calico-node-h6bk9                         1/1     Running   1          145d
calico-node-p6knc                         1/1     Running   2          145d
coredns-58d8cd457b-kvkz4                  1/1     Running   2          145d
metrics-server-cbd456c66-lq8ns            1/1     Running   0          6s
# kubectl top pod nfs-provisioner-7cb5bf8868-rnglp 
NAME                                      CPU(cores)   MEMORY(bytes)   
nfs-provisioner-7cb5bf8868-rnglp   1m           8Mi