When existing worker node is made a control plane node , the node gets removed from the cluster.

[sangeethah]

rke version v0.0.7-dev

Steps to reproduce the problem:
Created a k8s with 1 controlplane node , 1 etcd and 3 worker nodes.
Updated one of the node in worker plane to become a controlplane node.

When controlplane nodes are getting evaluated:
The updated host, becomes a controlplane node (I do see the system containers relating to control plane being deployed in this host).
Also rolling updates for the nginx-proxy container for all existing worker nodes gets updated with this new host in controlplane node as expetced.

When worker nodes are getting evaluated:
This host gets removed from the k8s cluster.

Expected behavior:
The host should continue to be part of K8s cluster but should be a cotrolplane node.

[sangeethah]

Tested with rke version v0.0.8-dev

Created a k8s with 2 controlplane node , 1 etcd and 3 worker nodes.
Updated one of the nodes in worker plane to become a control plane node.

Node that was updated to become a control plane , continues to be in part of K8s cluster and becomes a master node as expected. It has all the control plane system containers running it and no nginx-proxy container running in it.

kube-proxy
kubelet
scheduler
kube-controller
kube-api

Also nginx-proxy containers in all existing worker nodes now have this new node programmed.