Kubespray: scaling workers in kubeadm etcd mode does not work

[hafe]

Environment:

• Cloud provider or hardware configuration:

• OS (printf "$(uname -srm)\n$(cat /etc/os-release)\n"):

• Version of Ansible (ansible --version):

• Version of Python (python --version):

Kubespray version (commit) (git rev-parse --short HEAD):

Network plugin used:

calico with etcd datastore

Full inventory with variables (ansible -i inventory/sample/inventory.ini all -m debug -a "var=hostvars[inventory_hostname]"):

Command used to invoke ansible:

Output of ansible run:

this task fails: "[kubernetes/kubeadm : Parse certificate key if not set]"

with: "msg": "The task includes an option with an undefined variable. The error was: 'ansible.vars.hostvars.HostVarsVars object' has no attribute 'kubeadm_upload_cert'

Anything else do we need to know:

[hafe]

I have done the troubleshooting and have a pr soon