---
- name: check for nodes to be removed
  hosts: _kubernetes_primary_master_
  tasks:
  - name: fetch list of current nodes
    command: kubectl get nodes -o name
    changed_when: False
    check_mode: no
    register: kubectl_node_list

  - name: generate list of nodes to be removed
    loop: "{{ kubectl_node_list.stdout_lines | map('replace', 'node/', '') | list | difference(groups['_kubernetes_nodes_']) }}"
    add_host:
      name: "{{ item }}"
      inventory_dir: "{{ hostvars[item].inventory_dir }}"
      group: _kubernetes_nodes_prune_
    changed_when: False

  - name: drain superflous nodes
    loop: "{{ groups['_kubernetes_nodes_prune_'] | default([]) }}"
    command: "kubectl drain {{ item }} --delete-local-data --force --ignore-daemonsets"

- name: prune superflous nodes from cluster
  hosts: _kubernetes_nodes_
  roles:
  - role: kubernetes/kubeadm/prune

- name: wipe superflous nodes
  hosts: _kubernetes_nodes_prune_
  roles:
  - role: kubernetes/kubeadm/reset