i found this doc https://ranchermanager.docs.rancher.com/reference-guides/cluster-configuration/rancher-server-configuration/rke2-cluster-configuration#registries, but the linked document doesnt exist

this might be what you are looking for: https://docs.rke2.io/install/private_registry

hey @average-hospital-77138 thank you.. but how to make rancher do the changes in the nodes?

Dont know if this is right but: https://ranchermanager.docs.rancher.com/v2.11/how-to-guides/new-user-guides/authentication-p[…]-global-configuration/global-default-private-registry "Since the private registry cannot be configured after the cluster is created, you'll need to perform these steps during initial cluster setup."

hm, somehow i just edited the config as file, added the config as linked in the file and it worked..