# Kubernetes (k3s) Certs Expired

There is a bug in some older k3s releases that causes certificate auto-renewal to fail.

```bash
kubectl --insecure-skip-tls-verify=true delete secret -n kube-system k3s-serving
stop k3s
remove/backup /var/lib/rancher/k3s/server/tls/dynamic-cert.json
remove/backup /etc/rancher/k3s/k3s.yaml
restart k3s
```