hello everyone ,I have changed my rancher url certificate , when using the kubeconfig , I got the error "Unable to connect to the server: x509: certificate signed by unknown authority", does anyone know how to update the kubeconfig certificate-authority-data section

Do you have access to the rancher Web UI? if yes, then have you tried to download again the kubeconfig from there?

yes , I have downloaded the kubeconfig from web UI, and client got the error ""Unable to connect to the server: x509: certificate signed by unknown authority""

and how did you upgrade the cert for the cluster?

I just upgrade the certificate in nginx

is that a self signed cert?

yes, it's a self signed cert

First create a backup of your kubeconfig file. Just in case. Identify the name of your cluster in your kubeconfig using

kubectl config get-clusters

Then try to set the CA for it using

kubectl config set-cluster <YOUR CLUSTER NAME> --embed-certs --certificate-authority=<YOUR CA FILE PATH HERE>

thanks Laszlo, it works on client, but how to update the kubeconfig in web ui ?

That's something I don't know right now ... 😞 sorry. I'm more literate with kubernetes than with Rancher ...