# rke


12/02/2022, 6:19 PM
👋 I think this is the right place to ask about this, but let me know if it is not, basically I have seen a bunch of issues like these: 29449, 38359, 19916, 19597, and a few more similar with the error:
Copy code
cannot proceed with upgrade of controlplane since 1 host(s) cannot be reached prior to upgrade
The cluster was provisioned with Terraform and RKE, the problem seems to have been triggered by a downscale at the same time that the cluster was about or getting upgraded, I have tried clearing the node from the CRDs, update the state manually, recreate a node, but nothing worked after that, nodes can’t register, and the upgrade is also stuck, any ideas to what can I do to keep debugging this? is there a way to deregister and register the cluster again in rancher to see if that helps?