K3S_Rotate_Certificate 

# Checking service
systemctl status k3s.service 

# Stopping K3S
systemctl stop k3s

# Rotate certificate
k3s certificate rotate

# Restart K3S
systemctl start k3s

# Checking
kubectl get nodes

# Get new certificate for external auth
cat /etc/rancher/k3s/k3s.yaml

Last modified: Tue Nov 18 13:10:15 2025