Solve the problem of using anonymous users in pod due to the failure of attaching ciphertext token files for serviceaccount user authentication

solve serviceaccount User authentication mount ciphertext token File failure results in pod Use anonymous User problem

1. Background description

I am here kubernetes Deployed in a cluster jenkins It was made by myself docker Containers , The underlying system is centos7, because jenkins yes yum Installed , Therefore need systemctl Command initiated , It also opens the privilege mode , But when everything is ready , In the configuration kubernetes After the cluster information template , The connection test is carried out and an error is reported

The error information is as follows ：

Error testing connection https://kubernetes.default: javax.net.ssl.SSLHandshakeException: PKIX