kubectl unable to connect to server: x509: certificate signed by unknown authority
One more solution in case it helps anyone:
My scenario:
- using Windows 10
- Kubernetes installed via Docker Desktop ui 2.1.0.1
- the installer created config file at
~/.kube/config - the value in
~/.kube/configforserverishttps://kubernetes.docker.internal:6443 - using proxy
Issue: kubectl commands to this endpoint were going through the proxy, I figured it out after running kubectl --insecure-skip-tls-verify cluster-info dump which displayed the proxy html error page.
Fix: just making sure that this URL doesn't go through the proxy, in my case in bash I used export no_proxy=$no_proxy,*.docker.internal
Run:
gcloud container clusters get-credentials standard-cluster-1 --zone us-central1-a --project devops1-218400here devops1-218400 is my project name. Replace it with your project name.
I got the same error while running $ kubectl get nodes as a root user. I fixed it by exporting kubelet.conf to environment variable.
$ export KUBECONFIG=/etc/kubernetes/kubelet.conf$ kubectl get nodes