site-osp-instances.yml

- hosts: workstation
  become: yes

  tasks:
  - name: Fetch Instance Info
    os_server_facts:
      cloud: ospcloud
      region_name: RegionOne
    register: result

  - set_fact:
      instances: "{{ result.ansible_facts.openstack_servers | json_query('[*].name') }}"

  - debug:
      var: instances

  # os_server module not idempotent (errors out when deploying an instance with the same name)
  ## Create Frontend Instance
  - name: Create frontend instance
    include_role:
       name: osp-instances
       vars_from: frontend.yml
    when: "'frontend' not in instances"
  ## Create App1 server 
  - name: Create app1 instance
    include_role:
       name: osp-instances
       vars_from: app1.yml
    when: "'app1' not in instances"
  ## Create App2 server
  - name: Create app2 instance
    include_role:
       name: osp-instances
       vars_from: app2.yml
    when: "'app2' not in instances"
  ## Create DB server
  - name: Create db instance
    include_role:
       name: osp-instances
       vars_from: db.yml
    when: "'db' not in instances"