[k3s v1.31.6+k3s1] Node certificate expiry message

[cwrx777]

k3s: v1.31.6+k3s1
OS: RHEL 8.10

The warning message after k3s was restarted are still present:

 Message:         
  Node certificates require attention - restart k3s on this node to trigger automatic rotation: kube-proxy/client-kube-proxy.crt: certificate CN=system:kube-prox  expired at 2025-06-12T11:51:41Z, k3s-controller/client-k3s-controller.crt: certificate CN=system:k3s-controller expired at 2025-06-12T11:51:41Z 

k3s certificate check --debug --output table output:

CERTIFICATE                      SUBJECT                                                        STATUS   EXPIRES
-----------                      -------                                                        ------   -------
...
client-kube-proxy.crt            CN=system:kube-proxy                                           EXPIRED  2025-06-12T11:51:41Z
client-kube-proxy.crt            CN=k3s-client-ca@1718193101                                    OK       2034-06-10T11:51:41Z
client-kube-proxy.crt            CN=system:kube-proxy                                           OK       2026-07-28T10:38:08Z
client-kube-proxy.crt            CN=k3s-client-ca@1718193101                                    OK       2034-06-10T11:51:41Z
...
client-k3s-controller.crt        CN=system:k3s-controller                                       EXPIRED  2025-06-12T11:51:41Z
client-k3s-controller.crt        CN=k3s-client-ca@1718193101                                    OK       2034-06-10T11:51:41Z
client-k3s-controller.crt        CN=system:k3s-controller                                       OK       2026-07-28T10:38:08Z
client-k3s-controller.crt        CN=k3s-client-ca@1718193101                                    OK       2034-06-10T11:51:41Z
...

[brandond]

Duplicate of

• Certificate expiration events persist after certificates are rotated #12107
• Clean up now-unused server/tls/client-kube-proxy.crt and server/tls/client-k3s-controller.crt files on startup #12534

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