Unable to connect to the server x509 certificate signed by unknown authority possibly because of crypto rsa verification error

Question

Hi Guys,

I am trying to kubectl get pods command in my Kubernetes Cluster. But it is showing m the below error.

$ kubectl get pods
Unable to connect to the server: x509: certificate signed by unknown authority (possibly because of "crypto/rsa: verification error" while trying to verify candidate authority certificate "kubernetes")

Answer 1

Hi@akhtar,

The following error indicates a possible certificate mismatch. You need to verify that the $HOME/.kube/config file contains a valid certificate, and regenerate a certificate if necessary. The certificates in a kubeconfig file are base64 encoded. The base64 --decode command can be used to decode the certificate and OpenSSL x509 -text -noout can be used for viewing the certificate information.

Answer 2

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config