openstack-ansible-os_tacker/extras/haproxy_tacker.yml

  - service:
      haproxy_service_name: tacker_server
      haproxy_backend_nodes: "{{ groups['tacker_server'] | default([]) }}"
      haproxy_port: 8888
      haproxy_balance_type: http
      haproxy_backend_options:
        - "forwardfor"
        - "httpchk"
        - "httplog"