service_discovery.yml

- name: Service discovery
  hosts: undercloud
  gather_facts: yes
  any_errors_fatal: true
  vars:
      service_map:
          nova-scheduler:
              group: nova_scheduler
              command: "nova service-list | grep nova-scheduler | awk '{print $6}' | awk -F '.' '{print $1}' | head -1"
              command_execution: undercloud
          nova-compute:
              group: nova-compute
              command: "nova service-list | grep nova-compute | awk '{print $6}' | awk -F '.' '{print $1}'"
              command_execution: undercloud
          neutron-server:
              group: neutron-server
              command: "systemctl is-active neutron-server"
              command_execution: overcloud_nodes
  tasks:
      - fail:
            msg: "'sevices' is not defined"
        when: services is not defined

      - fail:
            msg: "{{ item }} not found in service map"
        when: service_map[item] is not defined
        with_items: "{{ services }}"

      - include_tasks: tasks/service_discovery.yml
        when: service_map[service].group not in groups or install.resync|default(false)
        with_items: "{{ services }}"
        loop_control:
            loop_var: service

- name: generate inventory file
  hosts: localhost
  gather_facts: no
  tags: always
  roles:
      - inventory-update