kolla-ansible/ansible/roles/neutron/tasks/precheck.yml

---
- import_role:
    name: service-precheck
  vars:
    service_precheck_services: "{{ neutron_services }}"
    service_name: "{{ project_name }}"

- name: Get container facts
  become: true
  kolla_container_facts:
    name:
      - neutron_server
  register: container_facts

- name: Checking free port for Neutron Server
  wait_for:
    host: "{{ api_interface_address }}"
    port: "{{ neutron_server_listen_port }}"
    connect_timeout: 1
    timeout: 1
    state: stopped
  when:
    - container_facts['neutron_server'] is not defined
    - inventory_hostname in groups['neutron-server']

- name: Checking number of network agents
  fail:
    msg: "Number of network agents are less than two when enabling agent ha"
  changed_when: false
  run_once: True
  when:
    - enable_neutron_agent_ha | bool
    - groups['neutron-dhcp-agent'] | length < 2
      or groups['neutron-l3-agent'] | length < 2

- name: Checking tenant network types
  vars:
    type_drivers: "{{ neutron_type_drivers.replace(' ', '').split(',') | reject('equalto', '') | list }}"
    tenant_network_types: "{{ neutron_tenant_network_types.replace(' ', '').split(',') | reject('equalto', '') | list }}"
  fail:
    msg: "Tenant network type '{{ item }}' is not in type drivers [{{ neutron_type_drivers }}]"
  changed_when: false
  when: item not in type_drivers
  run_once: true
  with_items: "{{ tenant_network_types }}"

- name: Checking whether Ironic enabled
  fail:
    msg: "Ironic must be enabled when using networking-baremetal/ironic-neutron-agent"
  changed_when: false
  run_once: True
  when:
    - enable_ironic_neutron_agent | bool
    - not (enable_ironic | bool)