Dead cause of certificat expires

Hi everybody.
Today Certificat Expires, 1 year after cluster installation.
So now, nodes cant communicate with Rancher
Our setup : Rancher install via docker, clusters are RKE2 Custom.
Last time it happened we re-install everything… long and painful :o(
My question is very simple : How to renew expires certificates in our case/setup ?
Thanks in advance
PS : Rancher vers. 2.6.8
PS : We are very stuck with this problem… If any info could help : please ask !

Finaly found the solution : [BUG] Rancher managed RKE2 clusters stuck in "Waiting for probes: kube-controller-manager, kube-scheduler" · Issue #41125 · rancher/rancher · GitHub