Unable to update config of kubernetes service about dcos-kubernetes-quickstart HOT 7 CLOSED

$ kubectl get nodes
NAME                                          STATUS    ROLES     AGE       VERSION
kube-node-0-kubelet.kubernetes.mesos          Ready     <none>    1m        v1.9.7
kube-node-1-kubelet.kubernetes.mesos          Ready     <none>    1m        v1.9.7
kube-node-2-kubelet.kubernetes.mesos          Ready     <none>    1m        v1.9.7
kube-node-public-0-kubelet.kubernetes.mesos   Ready     <none>    57s       v1.9.7

$ kubectl describe node 
...
Capacity:
 cpu:     8
 memory:  30880100Ki
 pods:    80
Allocatable:
 cpu:     2
 memory:  2000Mi
 pods:    80

$ dcos kubernetes update --options=resources/options.json.gcp
The following differences were detected between service configurations (CHANGED, CURRENT):
 {
   "kubernetes": {
     "high_availability": true,
     "node_count": 3,
     "public_node_count": 1,
     "reserved_resources": {
-      "kube_cpus": 2,
+      "kube_cpus": 5,
     }
   }
 }

The components of the cluster will be updated according to the changes in the
options file [/Users/engapa/git/dcos-kubernetes-quickstart/resources/options.json.gcp].

Updating these components means the Kubernetes cluster may experience some
downtime or, in the worst-case scenario, cease to function properly.
Before updating proceed cautiously and always backup your data.

This operation is long-running and has to run to completion.
Are you sure you want to continue? [yes/no] yes

2018/05/08 13:48:34 starting update process...