1.docker exec -it xxxx /bin/bash

2.

kubectl --insecure-skip-tls-verify -n kube-system delete secrets k3s-serving

kubectl --insecure-skip-tls-verify delete secret serving-cert -n cattle-system

rm -f /var/lib/rancher/k3s/server/tls/dynamic-cert.json

3.重啟 rancher-server