gistfile1.txt

- hosts: oo_first_master
  tasks:

  - debug: var=openshift.common.client_binary
  - debug: var=openshift_upgrade_nodes_label

  - name: Retrieve list of openshift nodes matching upgrade label
    command: >
      {{ openshift.common.client_binary }}
      get nodes
      --config={{ openshift.common.config_base }}/master/admin.kubeconfig
      --selector={{ openshift_upgrade_nodes_label }}
      -o jsonpath='{.items[*].metadata.name}'
    register: matching_nodes
    changed_when: false
    when: openshift_upgrade_nodes_label is defined

  - set_fact:
      nodes_to_upgrade: "{{ matching_nodes.stdout.split(' ') }}"
  - debug: var=nodes_to_upgrade
  - debug: var=matching_nodes.stdout.split(' ')
  - debug: var=groups['oo_nodes_to_config']

  - name: Evaluate oo_nodes_to_config
    add_host:
      name: "{{ item }}"
      groups: oo_nodes_to_upgrade
      ansible_ssh_user: "{{ g_ssh_user | default(omit) }}"
      ansible_become: "{{ g_sudo | default(omit) }}"
    when: hostvars[item].openshift.common.hostname in nodes_to_upgrade
    #with_items: "{{ matching_nodes.stdout.split(' ') }}"
    with_items: " {{ groups['oo_nodes_to_config'] }}"
    changed_when: false

  - debug: var=groups['oo_nodes_to_upgrade']
  - fail: