k8s報錯：Error syncing pod, skipping: failed to "StartContainer" for "kubernetes-dashboard" with CrashLoopBackOff: "Back-off 40s restarting failed container=kubernetes-dashboard pod=kubernetes-dashboard-4242380078-1tn4m_kube-system(af42ba88-7bca-11eb-be55-000c29617d77)"
服務不可用，到master 節點上查看pod信息：
看到有如下報錯
Error syncing pod, skipping: failed to "StartContainer" for "kubernetes-dashboard" with CrashLoopBackOff: "Back-off 40s restarting failed container=kubernetes-dashboard pod=kubernetes-dashboard-4242380078-1tn4m_kube-system(af42ba88-7bca-11eb-be55-000c29617d77)"
到對應的minion節點上查看是否缺少rhsm證書
yum list *rhsm*
安裝：
yum install *rhsm*
重啟pod：
1、到master節點刪除pod，查看pod：
[root@node1 kubernetes]# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
pods/kubernetes-dashboard-4242380078-mlsk0 1/1 Running 7 14m
2、刪除：
kubectl delete pods/kubernetes-dashboard-4242380078-mlsk0 -n kube-system
刪除后再次訪問UI仍然報錯：
[root@node1 kubernetes]# etcdctl cluster-health
member 8e9e05c52164694d is healthy: got healthy result from http://192.168.10.134:2379
cluster is healthy
查看日志信息：
[root@node1 kubernetes]# kubectl logs kubernetes-dashboard-4242380078-x5g3x -n kube-system
Using HTTP port: 8443
Using apiserver-host location: http://192.168.10.134:8080
Skipping in-cluster config
Using random key for csrf signing
No request provided. Skipping authorization header
Successful initial request to the apiserver, version: v1.5.2
No request provided. Skipping authorization header
Creating in-cluster Heapster client
Could not enable metric client: Health check failed: the server could not find the requested resource (get services heapster). Continuing.
連不上minion節點，到節點上查看iptables：
修改：
再次訪問UI：
