1.6+ sees a lot of changes revolving around RBAC and ABAC. However, what is a little quirky is not being able to access the dashboard etc. by default as previously possible.
Access will result in
User "system:anonymous" cannot proxy services in the namespace "kube-system".: "No policy matched."Documentation at the k8s docs is plenty, but not really stating how to gain access practically, as creator of a cluster, to become cluster-admin
What is a practical way to authenticate me as cluster-admin?
By far the easiest method is to use the credentials​ from /etc/kubernetes/admin.conf (this is on your master if you used kubeadm) . Run kubectl proxy --kubeconfig=admin.conf on your client and then you can visit http://127.0.0.1:8001/ui from your browser.
You might need to change the master address in admin.conf after you copied to you client machine.