原因： 默认生成的证书问题

    所以替换证书就行了.

    1. > mkdir key && cd key
    2. # 生成证书
    3. > openssl genrsa -out dashboard.key 2048
    4. > openssl req -new -out dashboard.csr -key dashboard.key -subj '/CN=yourip'
    5. > openssl x509 -req -in dashboard.csr -signkey dashboard.key -out dashboard.crt
    6. # 重新创建dashboard certs
    7. > kubectl delete secret kubernetes-dashboard-certs -n kubernetes-dashboard
    8. > kubectl create secret generic kubernetes-dashboard-certs --from-file=dashboard.key --from-file=dashboard.crt -n kubernetes-dashboard
    9. # 重启pod
    10. > kubectl delete pod kubernetes-dashboard-xxxx -n kubernetes-dashboard

    然后清除浏览器缓存，重新打开就行了