Kubernetes---记录一次排错

正在做实验
突然删除Pod卡死(Terminating)
kubectl top报错Error from server (ServiceUnavailable): the server is currently unable to handle the request (get pods.metrics.k8s.io)

[root@k8s-master1 ~]#kubectl get nodes
NAME          STATUS     ROLES    AGE   VERSION
k8s-master1   Ready      master   69d   v1.19.4
k8s-master2   Ready      master   69d   v1.19.4
k8s-master3   Ready      master   69d   v1.19.4
k8s-node1     Ready      <none>   69d   v1.19.4
k8s-node2     Ready      <none>   69d   v1.19.4
k8s-node3     NotReady   <none>   69d   v1.19.4

[root@k8s-master1 ~]#kubectl describe pods -n kube-system metrics-server-b989695d4-wx5wx 
Name:                 metrics-server-b989695d4-wx5wx
Namespace:            kube-system
Priority:             2000000000
Priority Class Name:  system-cluster-critical
Node:                 k8s-node3/42.51.80.136
......
Events:
  Type     Reason        Age    From             Message
  ----     ------        ----   ----             -------
  Warning  NodeNotReady  8m41s  node-controller  Node is not ready

[root@k8s-master1 ~]#kubectl delete pods -n kube-system metrics-server-b989695d4-wx5wx 
pod "metrics-server-b989695d4-wx5wx" deleted

出问题确实很难受，但是不要被吓倒，一步一步排查，看不懂的翻译，总能查到解决办法。