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# generala
adamant-kite-43734
03/08/2023, 8:37 AMThis message was deleted.
h
happy-tent-70860
03/08/2023, 8:48 AMDo you have access to the rancher Web UI? if yes, then have you tried to download again the kubeconfig from there?
b
bright-pillow-31910
03/08/2023, 8:55 AMyes , 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""
h
happy-tent-70860
03/08/2023, 8:55 AMand how did you upgrade the cert for the cluster?
b
bright-pillow-31910
03/08/2023, 8:59 AMI just upgrade the certificate in nginx
bright-pillow-31910
03/08/2023, 9:01 AMThis is my architecture diagram
h
happy-tent-70860
03/08/2023, 9:13 AMis that a self signed cert?
b
bright-pillow-31910
03/08/2023, 9:14 AMyes, it's a self signed cert
h
happy-tent-70860
03/08/2023, 9:20 AMFirst create a backup of your kubeconfig file. Just in case.
Identify the name of your cluster in your kubeconfig using
kubectl config get-clusterskubectl config set-cluster <YOUR CLUSTER NAME> --embed-certs --certificate-authority=<YOUR CA FILE PATH HERE>b
bright-pillow-31910
03/08/2023, 9:37 AMthanks Laszlo, it works on client, but how to update the kubeconfig in web ui ?
h
happy-tent-70860
03/08/2023, 9:44 AMThat's something I don't know right now ... 😞 sorry. I'm more literate with kubernetes than with Rancher ...
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