build_openstack_nodes.yml

---
- set_fact: outer_loop="{{ item }}"

- name: Create {{ outer_loop.host_group }} node(s)
  os_server:
    name: "{{ cluster_name }}-{{ outer_loop.host_group }}{{ (outer_loop.count > 1) | ternary(local_loop,'') }}{{ cloud_config.name_suffix|default('') }}"
    image: "{{ outer_loop.image }}"
    flavor: "{{ outer_loop.flavor }}"
    key_name: "{{ cloud_config.ssh.keyname }}"
    availability_zone: "{{ cloud_config.zone }}"
    state: present
    wait: true
    timeout: 900
    validate_certs: false
    meta:
      Cluster: "{{ cluster_name }}"
      Role: "{{ outer_loop.host_group }}"
      Group: "{{ cluster_name }}-{{ outer_loop.host_group }}"
  loop_control:
    loop_var: local_loop
  with_sequence: count="{{ outer_loop.count }}" format=-%02x
  async: 1000
  poll: 0
  register: current_nodes_async

- name: Wait for {{ outer_loop.host_group }} node(s) to be built
  async_status:
    jid: "{{ local_loop.ansible_job_id }}"
  loop_control:
    loop_var: local_loop
  with_items: "{{ current_nodes_async.results }}"
  register: current_nodes
  until: current_nodes.finished
  retries: 120