Error from server (InternalError): an error on the server (““) has prevented the request from suc

problem¶

This error occurs when executing any k8s command

[root@master helm]# kubectl get pod
Error from server (InternalError): an error on the server ("") has prevented the request from succeeding

reason¶

To contact apiserver, you need to visit: https://master:6443

The current command is executed directly in the control plane, so it is necessary to ensure that there is no problem with the analysis of the master

# Because the machine was configured with http proxy before this
export http_proxy='http://10.0.0.1:8889'
export https_proxy='http://10.0.0.1:8889'

# and
[root@master helm]# hostname
master

Therefore, the resolution of the master is the native machine and will be proxied to http://10.0.0.1:8889

So the apiserver cannot be accessed normally

solution¶

Method 1: Cancel the proxy

unset http_proxy
unset https_proxy

Method 2: Do not proxy the machine

export no_proxy='master,localhost,127.0.0.1,localaddress,.localdomain.com'

Note: If it is still not restored after modification, you can try to restart the kubelet service of the node